configure.ac

   1 dnl  Autoconf script for GNU Emacs
   2 dnl To rebuild the `configure' script from this, execute the command
   3 dnl     autoconf
   4 dnl in the directory containing this script.
   5 dnl If you changed any AC_DEFINES, also run autoheader.
   6 dnl
   7 dnl Copyright (C) 1994-1996, 1999-2012 Free Software Foundation, Inc.
   8 dnl
   9 dnl  This file is part of GNU Emacs.
  10 dnl
  11 dnl  GNU Emacs is free software: you can redistribute it and/or modify
  12 dnl  it under the terms of the GNU General Public License as published by
  13 dnl  the Free Software Foundation, either version 3 of the License, or
  14 dnl  (at your option) any later version.
  15 dnl
  16 dnl  GNU Emacs is distributed in the hope that it will be useful,
  17 dnl  but WITHOUT ANY WARRANTY; without even the implied warranty of
  18 dnl  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19 dnl  GNU General Public License for more details.
  20 dnl
  21 dnl  You should have received a copy of the GNU General Public License
  22 dnl  along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.
  23
  24 AC_PREREQ(2.65)
  25 AC_INIT(emacs, 24.1.50)
  26 AC_CONFIG_HEADER(src/config.h:src/config.in)
  27 AC_CONFIG_SRCDIR(src/lisp.h)
  28 AC_CONFIG_AUX_DIR(build-aux)
  29 AM_INIT_AUTOMAKE
  30
  31 dnl Support for --program-prefix, --program-suffix and
  32 dnl --program-transform-name options
  33 AC_ARG_PROGRAM
  34
  35 dnl It is important that variables on the RHS not be expanded here,
  36 dnl hence the single quotes.  This is per the GNU coding standards, see
  37 dnl (autoconf) Installation Directory Variables
  38 dnl See also epaths.h below.
  39 lispdir='${datadir}/emacs/${version}/lisp'
  40 leimdir='${datadir}/emacs/${version}/leim'
  41 standardlisppath='${lispdir}:${leimdir}'
  42 locallisppath='${datadir}/emacs/${version}/site-lisp:'\
  43 '${datadir}/emacs/site-lisp'
  44 lisppath='${locallisppath}:${standardlisppath}'
  45 etcdir='${datadir}/emacs/${version}/etc'
  46 archlibdir='${libexecdir}/emacs/${version}/${configuration}'
  47 docdir='${datadir}/emacs/${version}/etc'
  48 gamedir='${localstatedir}/games/emacs'
  49
  50 dnl OPTION_DEFAULT_OFF(NAME, HELP-STRING)
  51 dnl Create a new --with option that defaults to being disabled.
  52 dnl NAME is the base name of the option.  The shell variable with_NAME
  53 dnl   will be set to either the user's value (if the option is
  54 dnl   specified; 'yes' for a plain --with-NAME) or to 'no' (if the
  55 dnl   option is not specified).  Note that the shell variable name is
  56 dnl   constructed as autoconf does, by replacing non-alphanumeric
  57 dnl   characters with "_".
  58 dnl HELP-STRING is the help text for the option.
  59 AC_DEFUN([OPTION_DEFAULT_OFF], [dnl
  60   AC_ARG_WITH([$1],[AS_HELP_STRING([--with-$1],[$2])],[],[dnl
  61     m4_bpatsubst([with_$1], [[^0-9a-z]], [_])=no])dnl
  62 ])dnl
  63
  64 dnl OPTION_DEFAULT_ON(NAME, HELP-STRING)
  65 dnl Create a new --with option that defaults to being enabled.  NAME
  66 dnl   is the base name of the option.  The shell variable with_NAME
  67 dnl   will be set either to 'no' (for a plain --without-NAME) or to
  68 dnl   'yes' (if the option is not specified).  Note that the shell
  69 dnl   variable name is constructed as autoconf does, by replacing
  70 dnl   non-alphanumeric characters with "_".
  71 dnl HELP-STRING is the help text for the option.
  72 AC_DEFUN([OPTION_DEFAULT_ON], [dnl
  73   AC_ARG_WITH([$1],[AS_HELP_STRING([--without-$1],[$2])],[],[dnl
  74    m4_bpatsubst([with_$1], [[^0-9a-z]], [_])=yes])dnl
  75 ])dnl
  76
  77 OPTION_DEFAULT_ON([pop],[don't support POP mail retrieval with movemail])
  78 if test "$with_pop" = yes; then
  79    AC_DEFINE(MAIL_USE_POP)
  80 fi
  81 AH_TEMPLATE(MAIL_USE_POP, [Define to support POP mail retrieval.])dnl
  82
  83 OPTION_DEFAULT_OFF([kerberos],[support Kerberos-authenticated POP])
  84 if test "$with_kerberos" != no; then
  85    AC_DEFINE(KERBEROS)
  86 fi
  87 AH_TEMPLATE(KERBEROS,
  88             [Define to support Kerberos-authenticated POP mail retrieval.])dnl
  89
  90 OPTION_DEFAULT_OFF([kerberos5],[support Kerberos version 5 authenticated POP])
  91 if test "${with_kerberos5}" != no; then
  92   if test "${with_kerberos}" = no; then
  93     with_kerberos=yes
  94     AC_DEFINE(KERBEROS)
  95   fi
  96   AC_DEFINE(KERBEROS5, 1, [Define to use Kerberos 5 instead of Kerberos 4.])
  97 fi
  98
  99 OPTION_DEFAULT_OFF([hesiod],[support Hesiod to get the POP server host])
 100 dnl FIXME hesiod support may not be present, so it seems like an error
 101 dnl to define, or at least use, this unconditionally.
 102 if test "$with_hesiod" != no; then
 103   AC_DEFINE(HESIOD, 1, [Define to support using a Hesiod database to find the POP server.])
 104 fi
 105
 106 OPTION_DEFAULT_OFF([mmdf],[support MMDF mailboxes])
 107 if test "$with_mmdf" != no; then
 108    AC_DEFINE(MAIL_USE_MMDF, 1, [Define to support MMDF mailboxes in movemail.])
 109 fi
 110
 111 OPTION_DEFAULT_OFF([mail-unlink],[unlink, rather than empty, mail spool after reading])
 112 if test "$with_mail_unlink" != no; then
 113    AC_DEFINE(MAIL_UNLINK_SPOOL, 1, [Define to unlink, rather than empty, mail spool after reading.])
 114 fi
 115
 116 AC_ARG_WITH([mailhost],[AS_HELP_STRING([--with-mailhost=HOSTNAME],
 117     [string giving default POP mail host])],
 118     AC_DEFINE_UNQUOTED(MAILHOST, ["$withval"], [String giving fallback POP mail host.]))
 119
 120 OPTION_DEFAULT_ON([sound],[don't compile with sound support])
 121
 122 OPTION_DEFAULT_ON([sync-input],[process async input synchronously])
 123 if test "$with_sync_input" = yes; then
 124    AC_DEFINE(SYNC_INPUT, 1, [Process async input synchronously.])
 125 fi
 126
 127 dnl FIXME currently it is not the last.
 128 dnl This should be the last --with option, because --with-x is
 129 dnl added later on when we find the path of X, and it's best to
 130 dnl keep them together visually.
 131 AC_ARG_WITH([x-toolkit],[AS_HELP_STRING([--with-x-toolkit=KIT],
 132  [use an X toolkit (KIT one of: yes or gtk, gtk3, lucid or athena, motif, no)])],
 133 [         case "${withval}" in
 134             y | ye | yes )      val=gtk ;;
 135             n | no )            val=no  ;;
 136             l | lu | luc | luci | lucid )       val=lucid ;;
 137             a | at | ath | athe | athen | athena )      val=athena ;;
 138             m | mo | mot | moti | motif )       val=motif ;;
 139             g | gt | gtk  )     val=gtk ;;
 140             gtk3  )     val=gtk3 ;;
 141             * )
 142 AC_MSG_ERROR([`--with-x-toolkit=$withval' is invalid;
 143 this option's value should be `yes', `no', `lucid', `athena', `motif', `gtk' or
 144 `gtk3'.  `yes' and `gtk' are synonyms. `athena' and `lucid' are synonyms.])
 145             ;;
 146           esac
 147           with_x_toolkit=$val
 148 ])
 149
 150 OPTION_DEFAULT_OFF([wide-int], [prefer wide Emacs integers (typically 62-bit)])
 151 if test "$with_wide_int" = yes; then
 152   AC_DEFINE([WIDE_EMACS_INT], 1, [Use long long for EMACS_INT if available.])
 153 fi
 154
 155 dnl _ON results in a '--without' option in the --help output, so
 156 dnl the help text should refer to "don't compile", etc.
 157 OPTION_DEFAULT_ON([xpm],[don't compile with XPM image support])
 158 OPTION_DEFAULT_ON([jpeg],[don't compile with JPEG image support])
 159 OPTION_DEFAULT_ON([tiff],[don't compile with TIFF image support])
 160 OPTION_DEFAULT_ON([gif],[don't compile with GIF image support])
 161 OPTION_DEFAULT_ON([png],[don't compile with PNG image support])
 162 OPTION_DEFAULT_ON([rsvg],[don't compile with SVG image support])
 163 OPTION_DEFAULT_ON([xml2],[don't compile with XML parsing support])
 164 OPTION_DEFAULT_ON([imagemagick],[don't compile with ImageMagick image support])
 165
 166 OPTION_DEFAULT_ON([xft],[don't use XFT for anti aliased fonts])
 167 OPTION_DEFAULT_ON([libotf],[don't use libotf for OpenType font support])
 168 OPTION_DEFAULT_ON([m17n-flt],[don't use m17n-flt for text shaping])
 169
 170 OPTION_DEFAULT_ON([toolkit-scroll-bars],[don't use Motif or Xaw3d scroll bars])
 171 OPTION_DEFAULT_ON([xaw3d],[don't use Xaw3d])
 172 OPTION_DEFAULT_ON([xim],[don't use X11 XIM])
 173 OPTION_DEFAULT_OFF([ns],[use NeXTstep (Cocoa or GNUstep) windowing system])
 174
 175 OPTION_DEFAULT_ON([gpm],[don't use -lgpm for mouse support on a GNU/Linux console])
 176 OPTION_DEFAULT_ON([dbus],[don't compile with D-Bus support])
 177 OPTION_DEFAULT_ON([gconf],[don't compile with GConf support])
 178 OPTION_DEFAULT_ON([gsettings],[don't compile with GSettings support])
 179 OPTION_DEFAULT_ON([selinux],[don't compile with SELinux support])
 180 OPTION_DEFAULT_ON([gnutls],[don't use -lgnutls for SSL/TLS support])
 181
 182 ## For the times when you want to build Emacs but don't have
 183 ## a suitable makeinfo, and can live without the manuals.
 184 dnl http://lists.gnu.org/archive/html/emacs-devel/2008-04/msg01844.html
 185 OPTION_DEFAULT_ON([makeinfo],[don't require makeinfo for building manuals])
 186
 187 ## Makefile.in needs the cache file name.
 188 AC_SUBST(cache_file)
 189
 190 ## This is an option because I do not know if all info/man support
 191 ## compressed files, nor how to test if they do so.
 192 OPTION_DEFAULT_ON([compress-info],[don't compress the installed Info pages])
 193 if test $with_compress_info = yes; then
 194    GZIP_INFO=yes
 195 else
 196    GZIP_INFO=
 197 fi
 198 AC_SUBST(GZIP_INFO)
 199
 200 AC_ARG_WITH([pkg-config-prog],dnl
 201 [AS_HELP_STRING([--with-pkg-config-prog=PATH],
 202                   [path to pkg-config for finding GTK and librsvg])])
 203 if test "X${with_pkg_config_prog}" != X; then
 204    if test "${with_pkg_config_prog}" != yes; then
 205       PKG_CONFIG="${with_pkg_config_prog}"
 206    fi
 207 fi
 208
 209 CRT_DIR=
 210 AC_ARG_WITH([crt-dir],dnl
 211 [AS_HELP_STRING([--with-crt-dir=DIR],[directory containing crtn.o etc.
 212 The default is /usr/lib, or /usr/lib64 on some platforms.])])
 213 CRT_DIR="${with_crt_dir}"
 214
 215 AC_ARG_WITH(gameuser,dnl
 216 [AS_HELP_STRING([--with-gameuser=USER],[user for shared game score files])])
 217 test "X${with_gameuser}" != X && test "${with_gameuser}" != yes \
 218   && gameuser="${with_gameuser}"
 219 test "X$gameuser" = X && gameuser=games
 220
 221 AC_ARG_WITH([gnustep-conf],dnl
 222 [AS_HELP_STRING([--with-gnustep-conf=PATH],[path to GNUstep.conf; default $GNUSTEP_CONFIG_FILE, or /etc/GNUstep/GNUstep.conf])])
 223 test "X${with_gnustep_conf}" != X && test "${with_gnustep_conf}" != yes && \
 224   GNUSTEP_CONFIG_FILE="${with_gnustep_conf}"
 225 test "X$GNUSTEP_CONFIG_FILE" = "X" && \
 226      GNUSTEP_CONFIG_FILE=/etc/GNUstep/GNUstep.conf
 227
 228 AC_ARG_ENABLE(ns-self-contained,
 229 [AS_HELP_STRING([--disable-ns-self-contained],
 230                 [disable self contained build under NeXTstep])],
 231    EN_NS_SELF_CONTAINED=$enableval,
 232    EN_NS_SELF_CONTAINED=yes)
 233
 234 AC_ARG_ENABLE(locallisppath,
 235 [AS_HELP_STRING([--enable-locallisppath=PATH],
 236                 [directories Emacs should search for lisp files specific
 237                  to this site])],
 238 if test "${enableval}" = "no"; then
 239   locallisppath=
 240 elif test "${enableval}" != "yes"; then
 241   locallisppath=${enableval}
 242 fi)
 243
 244 AC_ARG_ENABLE(checking,
 245 [AS_HELP_STRING([--enable-checking@<:@=LIST@:>@],
 246                 [enable expensive run-time checks.  With LIST,
 247                  enable only specific categories of checks.
 248                  Categories are: all,yes,no.
 249                  Flags are: stringbytes, stringoverrun, stringfreelist,
 250                  xmallocoverrun, conslist, glyphs])],
 251 [ac_checking_flags="${enableval}"],[])
 252 IFS="${IFS=     }"; ac_save_IFS="$IFS"; IFS="$IFS,"
 253 for check in $ac_checking_flags
 254 do
 255         case $check in
 256         # these set all the flags to specific states
 257         yes)            ac_enable_checking=1 ;;
 258         no)             ac_enable_checking= ;
 259                         ac_gc_check_stringbytes= ;
 260                         ac_gc_check_string_overrun= ;
 261                         ac_gc_check_string_free_list= ;
 262                         ac_xmalloc_overrun= ;
 263                         ac_gc_check_cons_list= ;
 264                         ac_glyphs_debug= ;;
 265         all)            ac_enable_checking=1 ;
 266                         ac_gc_check_stringbytes=1 ;
 267                         ac_gc_check_string_overrun=1 ;
 268                         ac_gc_check_string_free_list=1 ;
 269                         ac_xmalloc_overrun=1 ;
 270                         ac_gc_check_cons_list=1 ;
 271                         ac_glyphs_debug=1 ;;
 272         # these enable particular checks
 273         stringbytes)    ac_gc_check_stringbytes=1 ;;
 274         stringoverrun)  ac_gc_check_string_overrun=1 ;;
 275         stringfreelist) ac_gc_check_string_free_list=1 ;;
 276         xmallocoverrun) ac_xmalloc_overrun=1 ;;
 277         conslist)       ac_gc_check_cons_list=1 ;;
 278         glyphs)         ac_glyphs_debug=1 ;;
 279         *)      AC_MSG_ERROR(unknown check category $check) ;;
 280         esac
 281 done
 282 IFS="$ac_save_IFS"
 283
 284 if test x$ac_enable_checking != x ; then
 285   AC_DEFINE(ENABLE_CHECKING, 1,
 286 [Define to 1 if expensive run-time data type and consistency checks are enabled.])
 287 fi
 288 if test x$ac_gc_check_stringbytes != x ; then
 289   AC_DEFINE(GC_CHECK_STRING_BYTES, 1,
 290 [Define this temporarily to hunt a bug.  If defined, the size of
 291    strings is redundantly recorded in sdata structures so that it can
 292    be compared to the sizes recorded in Lisp strings.])
 293 fi
 294 if test x$ac_gc_check_string_overrun != x ; then
 295   AC_DEFINE(GC_CHECK_STRING_OVERRUN, 1,
 296 [Define this to check for short string overrun.])
 297 fi
 298 if test x$ac_gc_check_string_free_list != x ; then
 299   AC_DEFINE(GC_CHECK_STRING_FREE_LIST, 1,
 300 [Define this to check the string free list.])
 301 fi
 302 if test x$ac_xmalloc_overrun != x ; then
 303   AC_DEFINE(XMALLOC_OVERRUN_CHECK, 1,
 304 [Define this to check for malloc buffer overrun.])
 305 fi
 306 if test x$ac_gc_check_cons_list != x ; then
 307   AC_DEFINE(GC_CHECK_CONS_LIST, 1,
 308 [Define this to check for errors in cons list.])
 309 fi
 310 if test x$ac_glyphs_debug != x ; then
 311   AC_DEFINE(GLYPH_DEBUG, 1,
 312 [Define this to enable glyphs debugging code.])
 313 fi
 314
 315 AC_ARG_ENABLE(check-lisp-object-type,
 316 [AS_HELP_STRING([--enable-check-lisp-object-type],
 317                 [enable compile time checks for the Lisp_Object data type.
 318                 This is useful for development for catching certain types of bugs.])],
 319 if test "${enableval}" != "no"; then
 320    AC_DEFINE(CHECK_LISP_OBJECT_TYPE, 1,
 321    [Define this to enable compile time checks for the Lisp_Object data type.])
 322 fi)
 323
 324
 325 AC_ARG_ENABLE(profiling,
 326 [AS_HELP_STRING([--enable-profiling],
 327                 [build emacs with profiling support.
 328                  This might not work on all platforms])],
 329 [ac_enable_profiling="${enableval}"],[])
 330 if test x$ac_enable_profiling != x ; then
 331    PROFILING_CFLAGS="-DPROFILING=1 -pg"
 332 else
 333    PROFILING_CFLAGS=
 334 fi
 335 AC_SUBST(PROFILING_CFLAGS)
 336
 337 AC_ARG_ENABLE(autodepend,
 338 [AS_HELP_STRING([--enable-autodepend],
 339                 [automatically generate dependencies to .h-files.
 340                  Requires GNU Make and Gcc. Enabled if GNU Make and Gcc is
 341                  found])],
 342 [ac_enable_autodepend="${enableval}"],[ac_enable_autodepend=yes])
 343
 344 #### Make srcdir absolute, if it isn't already.  It's important to
 345 #### avoid running the path through pwd unnecessarily, since pwd can
 346 #### give you automounter prefixes, which can go away.  We do all this
 347 #### so Emacs can find its files when run uninstalled.
 348 ## Make sure CDPATH doesn't affect cd (in case PWD is relative).
 349 unset CDPATH
 350 case "${srcdir}" in
 351   /* ) ;;
 352   . )
 353     ## We may be able to use the $PWD environment variable to make this
 354     ## absolute.  But sometimes PWD is inaccurate.
 355     ## Note: we used to use ${PWD} at the end instead of `pwd`,
 356     ## but that tested only for a well-formed and valid PWD,
 357     ## it did not object when PWD was well-formed and valid but just wrong.
 358     if test ".${PWD}" != "." && test ".`(cd ${PWD} ; sh -c pwd)`" = ".`pwd`"  ;
 359     then
 360       srcdir="$PWD"
 361     else
 362       srcdir="`(cd ${srcdir}; pwd)`"
 363     fi
 364   ;;
 365   *  ) srcdir="`(cd ${srcdir}; pwd)`" ;;
 366 esac
 367
 368 #### Given the configuration name, set opsysfile to the
 369 #### name of s/*.h file we should use.
 370
 371 ### Canonicalize the configuration name.
 372
 373 AC_CANONICAL_HOST
 374 canonical=$host
 375 configuration=${host_alias-${build_alias-$host}}
 376
 377 dnl This used to use changequote, but, apart from `changequote is evil'
 378 dnl per the autoconf manual, we can speed up autoconf somewhat by quoting
 379 dnl the great gob of text.  Thus it's not processed for possible expansion.
 380 dnl Just make sure the brackets remain balanced.
 381 dnl
 382 dnl Since Emacs can't find matching pairs of quotes, boundaries are
 383 dnl indicated by comments.
 384 dnl quotation begins
 385 [
 386
 387 ### If you add support for a new configuration, add code to this
 388 ### switch statement to recognize your configuration name and select
 389 ### the appropriate operating system file.
 390
 391 ### You would hope that you could choose an s/*.h
 392 ### file based on the operating system portion.  However, it turns out
 393 ### that each s/*.h file is pretty manufacturer-specific.
 394 ### So we basically have to have a special case for each
 395 ### configuration name.
 396 ###
 397 ### As far as handling version numbers on operating systems is
 398 ### concerned, make sure things will fail in a fixable way.  If
 399 ### /etc/MACHINES doesn't say anything about version numbers, be
 400 ### prepared to handle anything reasonably.  If version numbers
 401 ### matter, be sure /etc/MACHINES says something about it.
 402
 403 opsys='' unported=no
 404 case "${canonical}" in
 405
 406   ## GNU/Linux and similar ports
 407   *-*-linux* )
 408     opsys=gnu-linux
 409   ;;
 410
 411   ## FreeBSD ports
 412   *-*-freebsd* )
 413     opsys=freebsd
 414   ;;
 415
 416   ## FreeBSD kernel + glibc based userland
 417   *-*-kfreebsd*gnu* )
 418     opsys=gnu-kfreebsd
 419   ;;
 420
 421   ## NetBSD ports
 422   *-*-netbsd* )
 423     opsys=netbsd
 424   ;;
 425
 426   ## OpenBSD ports
 427   *-*-openbsd* )
 428     opsys=openbsd
 429   ;;
 430
 431   ## Apple Darwin / Mac OS X
 432   *-apple-darwin* )
 433     case "${canonical}" in
 434       i[3456]86-* )  ;;
 435       powerpc-* )    ;;
 436       x86_64-* )     ;;
 437       * )            unported=yes ;;
 438     esac
 439     opsys=darwin
 440     ## Use fink packages if available.
 441     ## FIXME find a better way to do this: http://debbugs.gnu.org/11507
 442 ##    if test -d /sw/include && test -d /sw/lib; then
 443 ##      GCC_TEST_OPTIONS="-I/sw/include -L/sw/lib"
 444 ##      NON_GCC_TEST_OPTIONS=${GCC_TEST_OPTIONS}
 445 ##    fi
 446   ;;
 447
 448   ## HP 9000 series 700 and 800, running HP/UX
 449   hppa*-hp-hpux10.2* )
 450     opsys=hpux10-20
 451   ;;
 452   hppa*-hp-hpux1[1-9]* )
 453     opsys=hpux11
 454     CFLAGS="-D_INCLUDE__STDC_A1_SOURCE $CFLAGS"
 455   ;;
 456
 457   ## IBM machines
 458   rs6000-ibm-aix4.[23]* )
 459     opsys=aix4-2
 460   ;;
 461   powerpc-ibm-aix4.[23]*  )
 462     opsys=aix4-2
 463   ;;
 464   rs6000-ibm-aix[56]* )
 465     opsys=aix4-2
 466   ;;
 467   powerpc-ibm-aix[56]*  )
 468     opsys=aix4-2
 469   ;;
 470
 471   ## Silicon Graphics machines
 472   ## Iris 4D
 473   mips-sgi-irix6.5 )
 474     opsys=irix6-5
 475     # Without defining _LANGUAGE_C, things get masked out in the headers
 476     # so that, for instance, grepping for `free' in stdlib.h fails and
 477     # AC_HEADER_STD_C fails.   (MIPSPro 7.2.1.2m compilers, Irix 6.5.3m).
 478     NON_GCC_TEST_OPTIONS="-D_LANGUAGE_C"
 479   ;;
 480
 481   ## Suns
 482   *-sun-solaris* \
 483     | i[3456]86-*-solaris2* | i[3456]86-*-sunos5* \
 484     | x86_64-*-solaris2*    | x86_64-*-sunos5*)
 485     case "${canonical}" in
 486       i[3456]86-*-* )   ;;
 487       amd64-*-*|x86_64-*-*) ;;
 488       sparc* )          ;;
 489       * )               unported=yes ;;
 490     esac
 491     case "${canonical}" in
 492       *-sunos5.6* | *-solaris2.6* )
 493                 opsys=sol2-6
 494                 RANLIB="ar -ts"
 495                 ;;
 496       *-sunos5.[7-9]* | *-solaris2.[7-9]* )
 497                 opsys=sol2-6
 498                 emacs_check_sunpro_c=yes
 499                 ;;
 500       *-sunos5* | *-solaris* )
 501                 opsys=sol2-10
 502                 emacs_check_sunpro_c=yes
 503                 ;;
 504     esac
 505     ## Watch out for a compiler that we know will not work.
 506     case "${canonical}" in
 507      *-solaris* | *-sunos5* )
 508                 if [ "x$CC" = x/usr/ucb/cc ]; then
 509                   ## /usr/ucb/cc doesn't work;
 510                   ## we should find some other compiler that does work.
 511                   unset CC
 512                 fi
 513                 ;;
 514       *) ;;
 515     esac
 516   ;;
 517
 518   ## Intel 386 machines where we don't care about the manufacturer.
 519   i[3456]86-*-* )
 520     case "${canonical}" in
 521       *-cygwin )                opsys=cygwin ;;
 522       *-darwin* )               opsys=darwin ;;
 523       *-sysv4.2uw* )            opsys=unixware ;;
 524       *-sysv5uw* )              opsys=unixware ;;
 525       *-sysv5OpenUNIX* )        opsys=unixware ;;
 526       ## Otherwise, we'll fall through to the generic opsys code at the bottom.
 527     esac
 528   ;;
 529
 530   * )
 531     unported=yes
 532   ;;
 533 esac
 534
 535 ### If the code above didn't choose an operating system, just choose
 536 ### an operating system based on the configuration name.  You really
 537 ### only want to use this when you have no idea what the right
 538 ### operating system is; if you know what operating systems a machine
 539 ### runs, it's cleaner to make it explicit in the case statement
 540 ### above.
 541 if test x"${opsys}" = x; then
 542   case "${canonical}" in
 543     *-gnu* )                            opsys=gnu ;;
 544     * )
 545       unported=yes
 546     ;;
 547   esac
 548 fi
 549
 550 ]
 551 dnl quotation ends
 552
 553 if test $unported = yes; then
 554   AC_MSG_ERROR([Emacs hasn't been ported to `${canonical}' systems.
 555 Check `etc/MACHINES' for recognized configuration names.])
 556 fi
 557
 558 opsysfile="s/${opsys}.h"
 559
 560
 561 #### Choose a compiler.
 562
 563 dnl Sets GCC=yes if using gcc.
 564 AC_PROG_CC
 565 AM_PROG_CC_C_O
 566
 567 if test x$GCC = xyes; then
 568   test "x$GCC_TEST_OPTIONS" != x && CC="$CC $GCC_TEST_OPTIONS"
 569 else
 570   test "x$NON_GCC_TEST_OPTIONS" != x && CC="$CC $NON_GCC_TEST_OPTIONS"
 571 fi
 572
 573 # Initialize gnulib right after choosing the compiler.
 574 gl_EARLY
 575
 576 AC_ARG_ENABLE([gcc-warnings],
 577   [AS_HELP_STRING([--enable-gcc-warnings],
 578                   [turn on lots of GCC warnings. This is intended for
 579                    developers, and may generate false alarms when used
 580                    with older or non-GNU development tools.])],
 581   [case $enableval in
 582      yes|no) ;;
 583      *)      AC_MSG_ERROR([bad value $enableval for gcc-warnings option]) ;;
 584    esac
 585    gl_gcc_warnings=$enableval],
 586   [gl_gcc_warnings=no]
 587 )
 588
 589 AC_ARG_ENABLE(link-time-optimization,
 590 [AS_HELP_STRING([--enable-link-time-optimization],
 591                 [build emacs with link-time optimization.
 592                  This is supported only for GCC since 4.5.0.])],
 593 if test "${enableval}" != "no"; then
 594    AC_MSG_CHECKING([whether link-time optimization is supported])
 595    ac_lto_supported=no
 596    if test x$GCC = xyes; then
 597       CPUS=`getconf _NPROCESSORS_ONLN 2>/dev/null`
 598       if test x$CPUS != x; then
 599          LTO="-flto=$CPUS"
 600       else
 601          LTO="-flto"
 602       fi
 603       old_CFLAGS=$CFLAGS
 604       CFLAGS="$CFLAGS $LTO"
 605       AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[]], [[]])],
 606         [ac_lto_supported=yes], [ac_lto_supported=no])
 607       CFLAGS="$old_CFLAGS"
 608    fi
 609    AC_MSG_RESULT([$ac_lto_supported])
 610    if test "$ac_lto_supported" = "yes"; then
 611       CFLAGS="$CFLAGS $LTO"
 612    fi
 613 fi)
 614
 615 # gl_GCC_VERSION_IFELSE([major], [minor], [run-if-found], [run-if-not-found])
 616 # ------------------------------------------------
 617 # If $CPP is gcc-MAJOR.MINOR or newer, then run RUN-IF-FOUND.
 618 # Otherwise, run RUN-IF-NOT-FOUND.
 619 AC_DEFUN([gl_GCC_VERSION_IFELSE],
 620   [AC_PREPROC_IFELSE(
 621     [AC_LANG_PROGRAM(
 622       [[
 623 #if ($1) < __GNUC__ || (($1) == __GNUC__ && ($2) <= __GNUC_MINOR__)
 624 /* ok */
 625 #else
 626 # error "your version of gcc is older than $1.$2"
 627 #endif
 628       ]]),
 629     ], [$3], [$4])
 630   ]
 631 )
 632
 633 # When compiling with GCC, prefer -isystem to -I when including system
 634 # include files, to avoid generating useless diagnostics for the files.
 635 if test "$gl_gcc_warnings" != yes; then
 636   isystem='-I'
 637 else
 638   isystem='-isystem '
 639
 640   # This, $nw, is the list of warnings we disable.
 641   nw=
 642
 643   case $with_x_toolkit in
 644     lucid | athena | motif)
 645        # Old toolkits mishandle 'const'.
 646        nw="$nw -Wwrite-strings"
 647        ;;
 648     *)
 649        gl_WARN_ADD([-Werror], [WERROR_CFLAGS])
 650        ;;
 651   esac
 652   AC_SUBST([WERROR_CFLAGS])
 653
 654   nw="$nw -Waggregate-return"       # anachronistic
 655   nw="$nw -Wlong-long"              # C90 is anachronistic
 656   nw="$nw -Wc++-compat"             # We don't care about C++ compilers
 657   nw="$nw -Wundef"                  # Warns on '#if GNULIB_FOO' etc in gnulib
 658   nw="$nw -Wtraditional"            # Warns on #elif which we use often
 659   nw="$nw -Wcast-qual"              # Too many warnings for now
 660   nw="$nw -Wconversion"             # Too many warnings for now
 661   nw="$nw -Wsystem-headers"         # Don't let system headers trigger warnings
 662   nw="$nw -Wsign-conversion"        # Too many warnings for now
 663   nw="$nw -Woverlength-strings"     # Not a problem these days
 664   nw="$nw -Wtraditional-conversion" # Too many warnings for now
 665   nw="$nw -Wunreachable-code"       # so buggy that it's now silently ignored
 666   nw="$nw -Wpadded"                 # Our structs are not padded
 667   nw="$nw -Wredundant-decls"        # we regularly (re)declare functions
 668   nw="$nw -Wlogical-op"             # any use of fwrite provokes this
 669   nw="$nw -Wformat-nonliteral"      # we do this a lot
 670   nw="$nw -Wvla"                    # warnings in gettext.h
 671   nw="$nw -Wnested-externs"         # use of XARGMATCH/verify_function__
 672   nw="$nw -Wswitch-enum"            # Too many warnings for now
 673   nw="$nw -Wswitch-default"         # Too many warnings for now
 674   nw="$nw -Wfloat-equal"            # warns about high-quality code
 675   nw="$nw -Winline"                 # OK to ignore 'inline'
 676   nw="$nw -Wsync-nand"              # irrelevant here, and provokes ObjC warning
 677   nw="$nw -Wunsafe-loop-optimizations" # OK to suppress unsafe optimizations
 678
 679   # Emacs doesn't care about shadowing; see
 680   # <http://lists.gnu.org/archive/html/emacs-diffs/2011-11/msg00265.html>.
 681   nw="$nw -Wshadow"
 682
 683   # The following lines should be removable at some point.
 684   nw="$nw -Wstack-protector"
 685   nw="$nw -Wstrict-overflow"
 686   nw="$nw -Wsuggest-attribute=pure"
 687
 688   gl_MANYWARN_ALL_GCC([ws])
 689   gl_MANYWARN_COMPLEMENT([ws], [$ws], [$nw])
 690   for w in $ws; do
 691     gl_WARN_ADD([$w])
 692   done
 693   gl_WARN_ADD([-Wno-missing-field-initializers]) # We need this one
 694   gl_WARN_ADD([-Wno-sign-compare])     # Too many warnings for now
 695   gl_WARN_ADD([-Wno-type-limits])      # Too many warnings for now
 696   gl_WARN_ADD([-Wno-switch])           # Too many warnings for now
 697   gl_WARN_ADD([-Wno-unused-parameter]) # Too many warnings for now
 698   gl_WARN_ADD([-Wno-format-nonliteral])
 699
 700   # In spite of excluding -Wlogical-op above, it is enabled, as of
 701   # gcc 4.5.0 20090517.
 702   gl_WARN_ADD([-Wno-logical-op])
 703
 704   gl_WARN_ADD([-fdiagnostics-show-option])
 705   gl_WARN_ADD([-funit-at-a-time])
 706
 707   AC_DEFINE([lint], [1], [Define to 1 if the compiler is checking for lint.])
 708   AC_DEFINE([_FORTIFY_SOURCE], [2],
 709     [enable compile-time and run-time bounds-checking, and some warnings])
 710   AC_DEFINE([GNULIB_PORTCHECK], [1], [enable some gnulib portability checks])
 711
 712   # We use a slightly smaller set of warning options for lib/.
 713   # Remove the following and save the result in GNULIB_WARN_CFLAGS.
 714   nw=
 715   nw="$nw -Wunused-macros"
 716
 717   gl_MANYWARN_COMPLEMENT([GNULIB_WARN_CFLAGS], [$WARN_CFLAGS], [$nw])
 718   AC_SUBST([GNULIB_WARN_CFLAGS])
 719 fi
 720
 721
 722
 723 dnl Some other nice autoconf tests.
 724 dnl These are commented out, since gl_EARLY and/or Autoconf already does them.
 725 dnl AC_PROG_INSTALL
 726 dnl AC_PROG_MKDIR_P
 727 dnl if test "x$RANLIB" = x; then
 728 dnl   AC_PROG_RANLIB
 729 dnl fi
 730
 731 AC_PATH_PROG(INSTALL_INFO, install-info, :,
 732   $PATH$PATH_SEPARATOR/usr/sbin$PATH_SEPARATOR/sbin)
 733 dnl Don't use GZIP, which is used by gzip for additional parameters.
 734 AC_PATH_PROG(GZIP_PROG, gzip)
 735
 736 if test $opsys = gnu-linux; then
 737   AC_PATH_PROG(PAXCTL, paxctl,,
 738     [$PATH$PATH_SEPARATOR/sbin$PATH_SEPARATOR/usr/sbin])
 739 fi
 740
 741 ## Need makeinfo >= 4.7 (?) to build the manuals.
 742 AC_PATH_PROG(MAKEINFO, makeinfo, no)
 743 dnl By this stage, configure has already checked for egrep and set EGREP,
 744 dnl or exited with an error if no egrep was found.
 745 if test "$MAKEINFO" != "no" && \
 746   test x"`$MAKEINFO --version 2> /dev/null | $EGREP 'texinfo[[^0-9]]*([[1-4]][[0-9]]+|[[5-9]]|4\.[[7-9]]|4\.[[1-6]][[0-9]]+)'`" = x; then
 747    MAKEINFO=no
 748 fi
 749
 750 ## Makeinfo is unusual.  For a released Emacs, the manuals are
 751 ## pre-built, and not deleted by the normal clean rules.  makeinfo is
 752 ## therefore in the category of "special tools" not normally required, which
 753 ## configure does not have to check for (eg autoconf itself).
 754 ## In a Bazaar checkout on the other hand, the manuals are not included.
 755 ## So makeinfo is a requirement to build from Bazaar, and configure
 756 ## should test for it as it does for any other build requirement.
 757 ## We use the presence of $srcdir/info/emacs to distinguish a release,
 758 ## with pre-built manuals, from a Bazaar checkout.
 759 HAVE_MAKEINFO=yes
 760
 761 if test "$MAKEINFO" = "no"; then
 762   MAKEINFO=makeinfo
 763   if test "x${with_makeinfo}" = "xno"; then
 764     HAVE_MAKEINFO=no
 765   elif test ! -e $srcdir/info/emacs; then
 766     AC_MSG_ERROR( [You do not seem to have makeinfo >= 4.7, and your
 767 source tree does not seem to have pre-built manuals in the `info' directory.
 768 Either install a suitable version of makeinfo, or re-run configure
 769 with the `--without-makeinfo' option to build without the manuals.] )
 770   fi
 771 fi
 772 AC_SUBST(HAVE_MAKEINFO)
 773
 774 dnl Just so that there is only a single place we need to edit.
 775 INFO_EXT=.info
 776 INFO_OPTS=--no-split
 777 AC_SUBST(INFO_EXT)
 778 AC_SUBST(INFO_OPTS)
 779
 780 dnl Add our options to ac_link now, after it is set up.
 781
 782 if test x$GCC = xyes; then
 783   test "x$GCC_LINK_TEST_OPTIONS" != x && \
 784     ac_link="$ac_link $GCC_LINK_TEST_OPTIONS"
 785 else
 786   test "x$NON_GCC_LINK_TEST_OPTIONS" != x && \
 787     ac_link="$ac_link $NON_GCC_LINK_TEST_OPTIONS"
 788 fi
 789
 790 dnl We need -znocombreloc if we're using a relatively recent GNU ld.
 791 dnl If we can link with the flag, it shouldn't do any harm anyhow.
 792 dnl (Don't use `-z nocombreloc' as -z takes no arg on Irix.)
 793 dnl Treat GCC specially since it just gives a non-fatal `unrecognized option'
 794 dnl if not built to support GNU ld.
 795
 796 late_LDFLAGS=$LDFLAGS
 797 if test x$GCC = xyes; then
 798   LDFLAGS="$LDFLAGS -Wl,-znocombreloc"
 799 else
 800   LDFLAGS="$LDFLAGS -znocombreloc"
 801 fi
 802
 803 AC_MSG_CHECKING([for -znocombreloc])
 804 AC_LINK_IFELSE([AC_LANG_PROGRAM([], [])],
 805   [AC_MSG_RESULT(yes)],
 806   LDFLAGS=$late_LDFLAGS
 807   [AC_MSG_RESULT(no)])
 808
 809
 810 dnl The function dump-emacs will not be defined and temacs will do
 811 dnl (load "loadup") automatically unless told otherwise.
 812 test "x$CANNOT_DUMP" = "x" && CANNOT_DUMP=no
 813 case "$opsys" in
 814   your-opsys-here) CANNOT_DUMP=yes ;;
 815 esac
 816
 817 test "$CANNOT_DUMP" = "yes" && \
 818   AC_DEFINE(CANNOT_DUMP, 1, [Define if Emacs cannot be dumped on your system.])
 819
 820 AC_SUBST(CANNOT_DUMP)
 821
 822
 823 UNEXEC_OBJ=unexelf.o
 824 case "$opsys" in
 825   # MSDOS uses unexcoff.o
 826   # MSWindows uses unexw32.o
 827   aix4-2)
 828    UNEXEC_OBJ=unexaix.o
 829    ;;
 830   cygwin)
 831    UNEXEC_OBJ=unexcw.o
 832    ;;
 833   darwin)
 834    UNEXEC_OBJ=unexmacosx.o
 835    ;;
 836   hpux10-20 | hpux11)
 837    UNEXEC_OBJ=unexhp9k800.o
 838    ;;
 839   sol2-10)
 840    # Use the Solaris dldump() function, called from unexsol.c, to dump
 841    # emacs, instead of the generic ELF dump code found in unexelf.c.
 842    # The resulting binary has a complete symbol table, and is better
 843    # for debugging and other observability tools (debuggers, pstack, etc).
 844    #
 845    # If you encounter a problem using dldump(), please consider sending
 846    # a message to the OpenSolaris tools-linking mailing list:
 847    #      http://mail.opensolaris.org/mailman/listinfo/tools-linking
 848    #
 849    # It is likely that dldump() works with older Solaris too, but this has
 850    # not been tested, so for now this change is for Solaris 10 or newer.
 851    UNEXEC_OBJ=unexsol.o
 852    ;;
 853 esac
 854
 855 LD_SWITCH_SYSTEM=
 856 case "$opsys" in
 857   freebsd)
 858    ## Let `ld' find image libs and similar things in /usr/local/lib.
 859    ## The system compiler, GCC, has apparently been modified to not
 860    ## look there, contrary to what a stock GCC would do.
 861 ### It's not our place to do this.  See bug#10313#17.
 862 ###   LD_SWITCH_SYSTEM=-L/usr/local/lib
 863       :
 864    ;;
 865
 866   gnu-linux)
 867    ## cpp test was "ifdef __mips__", but presumably this is equivalent...
 868    case $host_cpu in mips*) LD_SWITCH_SYSTEM="-G 0";; esac
 869    ;;
 870
 871   netbsd)
 872 ### It's not our place to do this.  See bug#10313#17.
 873 ###   LD_SWITCH_SYSTEM="-Wl,-rpath,/usr/pkg/lib -L/usr/pkg/lib -Wl,-rpath,/usr/local/lib -L/usr/local/lib"
 874       :
 875    ;;
 876
 877   openbsd)
 878    ## Han Boetes <han@mijncomputer.nl> says this is necessary,
 879    ## otherwise Emacs dumps core on elf systems.
 880    LD_SWITCH_SYSTEM="-Z"
 881    ;;
 882 esac
 883 AC_SUBST(LD_SWITCH_SYSTEM)
 884
 885 ac_link="$ac_link $LD_SWITCH_SYSTEM"
 886
 887 ## This setting of LD_SWITCH_SYSTEM references LD_SWITCH_X_SITE_RPATH,
 888 ## which has not been defined yet.  When this was handled with cpp,
 889 ## it was expanded to null when configure sourced the s/*.h file.
 890 ## Thus LD_SWITCH_SYSTEM had different values in configure and the Makefiles.
 891 ## FIXME it would be cleaner to put this in LD_SWITCH_SYSTEM_TEMACS
 892 ## (or somesuch), but because it is supposed to go at the _front_
 893 ## of LD_SWITCH_SYSTEM, we cannot do that in exactly the same way.
 894 ## Compare with the gnu-linux case below, which added to the end
 895 ## of LD_SWITCH_SYSTEM, and so can instead go at the front of
 896 ## LD_SWITCH_SYSTEM_TEMACS.
 897 case "$opsys" in
 898   netbsd|openbsd)
 899    LD_SWITCH_SYSTEM="\$(LD_SWITCH_X_SITE_RPATH) $LD_SWITCH_SYSTEM" ;;
 900 esac
 901
 902
 903 C_SWITCH_MACHINE=
 904 case $canonical in
 905  alpha*)
 906   AC_CHECK_DECL([__ELF__])
 907   if test "$ac_cv_have_decl___ELF__" = "yes"; then
 908     ## With ELF, make sure that all common symbols get allocated to in the
 909     ## data section.  Otherwise, the dump of temacs may miss variables in
 910     ## the shared library that have been initialized.  For example, with
 911     ## GNU libc, __malloc_initialized would normally be resolved to the
 912     ## shared library's .bss section, which is fatal.
 913     if test "x$GCC" = "xyes"; then
 914       C_SWITCH_MACHINE="-fno-common"
 915     else
 916       AC_MSG_ERROR([What gives?  Fix me if DEC Unix supports ELF now.])
 917     fi
 918   else
 919     UNEXEC_OBJ=unexalpha.o
 920   fi
 921   ;;
 922 esac
 923 AC_SUBST(C_SWITCH_MACHINE)
 924
 925 AC_SUBST(UNEXEC_OBJ)
 926
 927 C_SWITCH_SYSTEM=
 928 ## Some programs in src produce warnings saying certain subprograms
 929 ## are too complex and need a MAXMEM value greater than 2000 for
 930 ## additional optimization.  --nils@exp-math.uni-essen.de
 931 test "$opsys" = "aix4.2" && test "x$GCC" != "xyes" && \
 932   C_SWITCH_SYSTEM="-ma -qmaxmem=4000"
 933 ## gnu-linux might need -D_BSD_SOURCE on old libc5 systems.
 934 ## It is redundant in glibc2, since we define _GNU_SOURCE.
 935 AC_SUBST(C_SWITCH_SYSTEM)
 936
 937
 938 LIBS_SYSTEM=
 939 case "$opsys" in
 940   ## IBM's X11R5 uses -lIM and -liconv in AIX 3.2.2.
 941   aix4-2) LIBS_SYSTEM="-lrts -lIM -liconv" ;;
 942
 943   freebsd) LIBS_SYSTEM="-lutil" ;;
 944
 945   hpux*) LIBS_SYSTEM="-l:libdld.sl" ;;
 946
 947   sol2*) LIBS_SYSTEM="-lsocket -lnsl" ;;
 948
 949   ## Motif needs -lgen.
 950   unixware) LIBS_SYSTEM="-lsocket -lnsl -lelf -lgen" ;;
 951 esac
 952 AC_SUBST(LIBS_SYSTEM)
 953
 954
 955 ### Make sure subsequent tests use flags consistent with the build flags.
 956
 957 if test x"${OVERRIDE_CPPFLAGS}" != x; then
 958   CPPFLAGS="${OVERRIDE_CPPFLAGS}"
 959 else
 960   CPPFLAGS="$C_SWITCH_SYSTEM $C_SWITCH_MACHINE $CPPFLAGS"
 961 fi
 962
 963 # Suppress obsolescent Autoconf test for size_t; Emacs assumes C89 or better.
 964 AC_DEFUN([AC_TYPE_SIZE_T])
 965 # Likewise for obsolescent test for uid_t, gid_t; Emacs assumes them.
 966 AC_DEFUN([AC_TYPE_UID_T])
 967
 968
 969 LIB_MATH=-lm
 970 LIB_STANDARD=
 971 START_FILES=
 972 dnl Current possibilities handled by sed (aix4-2 -> aix,
 973 dnl gnu-linux -> gnu/linux, etc.):
 974 dnl gnu, gnu/linux, gnu/kfreebsd, aix, cygwin, darwin, hpux, irix.
 975 dnl And special cases: berkeley-unix, usg-unix-v, ms-dos, windows-nt.
 976 SYSTEM_TYPE=`echo $opsys | sed -e 's/[[0-9]].*//' -e 's|-|/|'`
 977
 978 dnl NB do not use CRT_DIR unquoted here, since it might not be set yet.
 979 case $opsys in
 980   cygwin )
 981     LIB_MATH=
 982     START_FILES='pre-crt0.o'
 983     ;;
 984   darwin )
 985     ## Adding -lm confuses the dynamic linker, so omit it.
 986     LIB_MATH=
 987     START_FILES='pre-crt0.o'
 988     ;;
 989   freebsd )
 990     LIB_STANDARD='-lgcc -lc -lgcc $(CRT_DIR)/crtend.o $(CRT_DIR)/crtn.o'
 991     START_FILES='pre-crt0.o $(CRT_DIR)/crt1.o $(CRT_DIR)/crti.o $(CRT_DIR)/crtbegin.o'
 992     SYSTEM_TYPE=berkeley-unix
 993     ;;
 994   gnu-linux | gnu-kfreebsd )
 995     LIB_STANDARD='-lgcc -lc -lgcc $(CRT_DIR)/crtn.o'
 996     START_FILES='pre-crt0.o $(CRT_DIR)/crt1.o $(CRT_DIR)/crti.o'
 997     ;;
 998   hpux10-20 | hpux11 )
 999     LIB_STANDARD=-lc
1000     START_FILES='pre-crt0.o $(CRT_DIR)/crt0.o'
1001     ;;
1002   dnl NB this may be adjusted below.
1003   netbsd | openbsd )
1004     LIB_STANDARD='-lgcc -lc -lgcc $(CRT_DIR)/crtend.o'
1005     START_FILES='pre-crt0.o $(CRT_DIR)/crt0.o $(CRT_DIR)/crtbegin.o'
1006     SYSTEM_TYPE=berkeley-unix
1007     ;;
1008
1009   sol2* | unixware )
1010     SYSTEM_TYPE=usg-unix-v
1011     ;;
1012
1013 esac
1014
1015 AC_SUBST(LIB_MATH)
1016 AC_SUBST(START_FILES)
1017 AC_DEFINE_UNQUOTED(SYSTEM_TYPE, "$SYSTEM_TYPE",
1018   [The type of system you are compiling for; sets `system-type'.])
1019
1020 dnl Not all platforms use crtn.o files.  Check if the current one does.
1021 crt_files=
1022
1023 for file in x $LIB_STANDARD $START_FILES; do
1024   case "$file" in
1025     *CRT_DIR*) crt_files="$crt_files `echo $file | sed -e 's|.*/||'`" ;;
1026   esac
1027 done
1028
1029 if test "x$crt_files" != x; then
1030
1031   ## If user specified a crt-dir, use that unconditionally.
1032   crt_gcc=no
1033
1034   if test "X$CRT_DIR" = "X"; then
1035
1036     CRT_DIR=/usr/lib            # default
1037
1038     case "$canonical" in
1039       x86_64-*-linux-gnu* | s390x-*-linux-gnu*)
1040       ## On x86-64 and s390x GNU/Linux distributions, the standard library
1041       ## can be in a variety of places.  We only try /usr/lib64 and /usr/lib.
1042       ## For anything else (eg /usr/lib32), it is up the user to specify
1043       ## the location (bug#5655).
1044       ## Test for crtn.o, not just the directory, because sometimes the
1045       ## directory exists but does not have the relevant files (bug#1287).
1046       ## FIXME better to test for binary compatibility somehow.
1047       test -e /usr/lib64/crtn.o && CRT_DIR=/usr/lib64
1048       ;;
1049
1050       powerpc64-*-linux-gnu* | sparc64-*-linux-gnu*) CRT_DIR=/usr/lib64 ;;
1051     esac
1052
1053     case "$opsys" in
1054       hpux10-20) CRT_DIR=/lib ;;
1055     esac
1056
1057     test "x${GCC}" = xyes && crt_gcc=yes
1058
1059   fi                            # CRT_DIR = ""
1060
1061   crt_missing=
1062
1063   for file in $crt_files; do
1064
1065     ## If we're using gcc, try to determine it automatically by asking
1066     ## gcc.  [If this doesn't work, CRT_DIR will remain at the
1067     ## system-dependent default from above.]
1068     if test $crt_gcc = yes && test ! -e $CRT_DIR/$file; then
1069
1070        crt_file=`$CC --print-file-name=$file 2>/dev/null`
1071        case "$crt_file" in
1072          */*)
1073            CRT_DIR=`AS_DIRNAME(["$crt_file"])`
1074            ;;
1075        esac
1076     fi
1077
1078     dnl We expect all the files to be in a single directory, so after the
1079     dnl first there is no point asking gcc.
1080     crt_gcc=no
1081
1082     test -e $CRT_DIR/$file || crt_missing="$crt_missing $file"
1083   done                          # $crt_files
1084
1085   test "x$crt_missing" = x || \
1086     AC_MSG_ERROR([Required file(s) not found:$crt_missing
1087 Try using the --with-crt-dir option.])
1088
1089 fi                              # crt_files != ""
1090
1091 AC_SUBST(CRT_DIR)
1092
1093 case $opsys in
1094   netbsd | openbsd )
1095     if test -f $CRT_DIR/crti.o; then
1096
1097         test -f $CRT_DIR/crtn.o || \
1098           AC_MSG_ERROR([Required file not found: crtn.o])
1099
1100         LIB_STANDARD='-lgcc -lc -lgcc $(CRT_DIR)/crtend.o $(CRT_DIR)/crtn.o'
1101         START_FILES='pre-crt0.o $(CRT_DIR)/crt0.o $(CRT_DIR)/crti.o $(CRT_DIR)/crtbegin.o'
1102     fi
1103     ;;
1104 esac
1105
1106
1107 # Configure gnulib before invoking PKG_CHECK_MODULES, as the latter might
1108 # for example add -lrt to RSVG_LIBS, which would then cause gnulib to
1109 # incorrectly conclude that -lrt is not needed to link clock_gettime.
1110 gl_ASSERT_NO_GNULIB_POSIXCHECK
1111 gl_ASSERT_NO_GNULIB_TESTS
1112 gl_INIT
1113
1114 AC_PATH_PROG(PKG_CONFIG, pkg-config, no)
1115
1116 dnl This function definition taken from Gnome 2.0
1117 dnl PKG_CHECK_MODULES(GSTUFF, gtk+-2.0 >= 1.3 glib = 1.3.4, action-if, action-not)
1118 dnl defines GSTUFF_LIBS, GSTUFF_CFLAGS, see pkg-config man page
1119 dnl also defines GSTUFF_PKG_ERRORS on error
1120 AC_DEFUN([PKG_CHECK_MODULES], [
1121   succeeded=no
1122
1123   if test "$PKG_CONFIG" = "no" ; then
1124      ifelse([$4], , [AC_MSG_ERROR([
1125       *** The pkg-config script could not be found. Make sure it is in your path, or give the full path to pkg-config with the PKG_CONFIG environment variable or --with-pkg-config-prog.  Or see http://www.freedesktop.org/software/pkgconfig to get pkg-config.])], [$4])
1126   else
1127      PKG_CONFIG_MIN_VERSION=0.9.0
1128      if $PKG_CONFIG --atleast-pkgconfig-version $PKG_CONFIG_MIN_VERSION; then
1129         AC_MSG_CHECKING(for $2)
1130
1131         if $PKG_CONFIG --exists "$2" 2>&AS_MESSAGE_LOG_FD &&
1132            $1_CFLAGS=`$PKG_CONFIG --cflags "$2" 2>&AS_MESSAGE_LOG_FD` &&
1133            $1_LIBS=`$PKG_CONFIG --libs "$2" 2>&AS_MESSAGE_LOG_FD`; then
1134             edit_cflags="
1135               s,///*,/,g
1136               s/^/ /
1137               s/ -I/ $isystem/g
1138               s/^ //
1139             "
1140             $1_CFLAGS=`AS_ECHO(["$$1_CFLAGS"]) | sed -e "$edit_cflags"`
1141             $1_LIBS=`AS_ECHO(["$$1_LIBS"]) | sed -e 's,///*,/,g'`
1142             AC_MSG_RESULT([yes CFLAGS='$$1_CFLAGS' LIBS='$$1_LIBS'])
1143             succeeded=yes
1144         else
1145             AC_MSG_RESULT(no)
1146             $1_CFLAGS=""
1147             $1_LIBS=""
1148             ## If we have a custom action on failure, don't print errors, but
1149             ## do set a variable so people can do so.
1150             $1_PKG_ERRORS=`$PKG_CONFIG --errors-to-stdout --print-errors "$2"`
1151             ifelse([$4], ,echo $$1_PKG_ERRORS,)
1152         fi
1153
1154         AC_SUBST($1_CFLAGS)
1155         AC_SUBST($1_LIBS)
1156      else
1157         echo "*** Your version of pkg-config is too old. You need version $PKG_CONFIG_MIN_VERSION or newer."
1158         echo "*** See http://www.freedesktop.org/software/pkgconfig"
1159      fi
1160   fi
1161
1162   if test $succeeded = yes; then
1163      ifelse([$3], , :, [$3])
1164   else
1165      ifelse([$4], , [AC_MSG_ERROR([Library requirements ($2) not met; consider adjusting the PKG_CONFIG_PATH environment variable if your libraries are in a nonstandard prefix so pkg-config can find them.])], [$4])
1166   fi
1167 ])
1168
1169
1170 if test "${with_sound}" != "no"; then
1171   # Sound support for GNU/Linux and the free BSDs.
1172   AC_CHECK_HEADERS(machine/soundcard.h sys/soundcard.h soundcard.h,
1173     have_sound_header=yes)
1174   # Emulation library used on NetBSD.
1175   AC_CHECK_LIB(ossaudio, _oss_ioctl, LIBSOUND=-lossaudio, LIBSOUND=)
1176   AC_SUBST(LIBSOUND)
1177
1178   ALSA_REQUIRED=1.0.0
1179   ALSA_MODULES="alsa >= $ALSA_REQUIRED"
1180   PKG_CHECK_MODULES(ALSA, $ALSA_MODULES, HAVE_ALSA=yes, HAVE_ALSA=no)
1181   if test $HAVE_ALSA = yes; then
1182     SAVE_CFLAGS="$CFLAGS"
1183     SAVE_LIBS="$LIBS"
1184     CFLAGS="$ALSA_CFLAGS $CFLAGS"
1185     LIBS="$ALSA_LIBS $LIBS"
1186     AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <asoundlib.h>]], [[snd_lib_error_set_handler (0);]])],
1187                     emacs_alsa_normal=yes,
1188                     emacs_alsa_normal=no)
1189     if test "$emacs_alsa_normal" != yes; then
1190       AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <alsa/asoundlib.h>]],
1191                      [[snd_lib_error_set_handler (0);]])],
1192                      emacs_alsa_subdir=yes,
1193                      emacs_alsa_subdir=no)
1194       if test "$emacs_alsa_subdir" != yes; then
1195         AC_MSG_ERROR([pkg-config found alsa, but it does not compile.  See config.log for error messages.])
1196       fi
1197       ALSA_CFLAGS="$ALSA_CFLAGS -DALSA_SUBDIR_INCLUDE"
1198     fi
1199
1200     CFLAGS="$SAVE_CFLAGS"
1201     LIBS="$SAVE_LIBS"
1202     LIBSOUND="$LIBSOUND $ALSA_LIBS"
1203     CFLAGS_SOUND="$CFLAGS_SOUND $ALSA_CFLAGS"
1204     AC_DEFINE(HAVE_ALSA, 1, [Define to 1 if ALSA is available.])
1205   fi
1206
1207   dnl Define HAVE_SOUND if we have sound support.  We know it works and
1208   dnl compiles only on the specified platforms.  For others, it
1209   dnl probably doesn't make sense to try.
1210   if test x$have_sound_header = xyes || test $HAVE_ALSA = yes; then
1211      case "$opsys" in
1212        dnl defined __FreeBSD__ || defined __NetBSD__ || defined __linux__
1213        gnu-linux|freebsd|netbsd)
1214          AC_DEFINE(HAVE_SOUND, 1, [Define to 1 if you have sound support.])
1215          ;;
1216      esac
1217   fi
1218
1219   AC_SUBST(CFLAGS_SOUND)
1220 fi
1221
1222 dnl checks for header files
1223 AC_CHECK_HEADERS_ONCE(
1224   linux/version.h sys/systeminfo.h
1225   stdio_ext.h fcntl.h coff.h pty.h
1226   sys/vlimit.h sys/resource.h
1227   sys/utsname.h pwd.h utmp.h dirent.h util.h)
1228
1229 AC_MSG_CHECKING(if personality LINUX32 can be set)
1230 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <sys/personality.h>]], [[personality (PER_LINUX32)]])],
1231                emacs_cv_personality_linux32=yes,
1232                emacs_cv_personality_linux32=no)
1233 AC_MSG_RESULT($emacs_cv_personality_linux32)
1234
1235 if test $emacs_cv_personality_linux32 = yes; then
1236   AC_DEFINE(HAVE_PERSONALITY_LINUX32, 1,
1237             [Define to 1 if personality LINUX32 can be set.])
1238 fi
1239
1240 dnl On Solaris 8 there's a compilation warning for term.h because
1241 dnl it doesn't define `bool'.
1242 AC_CHECK_HEADERS(term.h, , , -)
1243 AC_HEADER_TIME
1244 AC_CHECK_DECLS([sys_siglist])
1245 if test $ac_cv_have_decl_sys_siglist != yes; then
1246   # For Tru64, at least:
1247   AC_CHECK_DECLS([__sys_siglist])
1248   if test $ac_cv_have_decl___sys_siglist = yes; then
1249     AC_DEFINE(sys_siglist, __sys_siglist,
1250               [Define to any substitute for sys_siglist.])
1251   fi
1252 fi
1253 AC_HEADER_SYS_WAIT
1254
1255 dnl Check for speed_t typedef.
1256 AC_CACHE_CHECK(for speed_t, emacs_cv_speed_t,
1257   [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <termios.h>]], [[speed_t x = 1;]])],
1258     emacs_cv_speed_t=yes, emacs_cv_speed_t=no)])
1259 if test $emacs_cv_speed_t = yes; then
1260   AC_DEFINE(HAVE_SPEED_T, 1,
1261            [Define to 1 if `speed_t' is declared by <termios.h>.])
1262 fi
1263
1264 AC_CACHE_CHECK(for struct exception, emacs_cv_struct_exception,
1265 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <math.h>]],
1266 [[static struct exception x; x.arg1 = x.arg2 = x.retval; x.name = ""; x.type = 1;]])],
1267   emacs_cv_struct_exception=yes, emacs_cv_struct_exception=no))
1268 HAVE_EXCEPTION=$emacs_cv_struct_exception
1269 dnl Define on Darwin so emacs symbols will not conflict with those
1270 dnl in the System framework.  Otherwise -prebind will not work.
1271 if test $emacs_cv_struct_exception != yes || test $opsys = darwin; then
1272   AC_DEFINE(NO_MATHERR, 1, [Define to 1 if you don't have struct exception in math.h.])
1273 fi
1274
1275 AC_CHECK_HEADERS_ONCE(sys/socket.h)
1276 AC_CHECK_HEADERS(net/if.h, , , [AC_INCLUDES_DEFAULT
1277 #if HAVE_SYS_SOCKET_H
1278 #include <sys/socket.h>
1279 #endif])
1280 AC_CHECK_HEADERS(ifaddrs.h, , , [AC_INCLUDES_DEFAULT
1281 #if HAVE_SYS_SOCKET_H
1282 #include <sys/socket.h>
1283 #endif])
1284 AC_CHECK_HEADERS(net/if_dl.h, , , [AC_INCLUDES_DEFAULT
1285 #if HAVE_SYS_SOCKET_H
1286 #include <sys/socket.h>
1287 #endif])
1288
1289 dnl checks for structure members
1290 AC_CHECK_MEMBERS([struct ifreq.ifr_flags, struct ifreq.ifr_hwaddr,
1291                   struct ifreq.ifr_netmask, struct ifreq.ifr_broadaddr,
1292                   struct ifreq.ifr_addr,
1293                   struct ifreq.ifr_addr.sa_len], , ,
1294                  [AC_INCLUDES_DEFAULT
1295 #if HAVE_SYS_SOCKET_H
1296 #include <sys/socket.h>
1297 #endif
1298 #if HAVE_NET_IF_H
1299 #include <net/if.h>
1300 #endif])
1301
1302 dnl Check for endianness.
1303 dnl AC_C_BIGENDIAN is done by gnulib.
1304
1305 AC_CACHE_CHECK([for  __attribute__ ((__aligned__ (expr)))],
1306   [emacs_cv_attribute_aligned],
1307   [AC_COMPILE_IFELSE(
1308      [AC_LANG_PROGRAM(
1309         [[char __attribute__ ((__aligned__ (1 << 3))) c;]],
1310         [[]])],
1311      [emacs_cv_attribute_aligned=yes],
1312      [emacs_cv_attribute_aligned=no])])
1313 if test $emacs_cv_attribute_aligned = yes; then
1314   AC_DEFINE([HAVE_ATTRIBUTE_ALIGNED], 1,
1315     [Define to 1 if GCC-style __attribute__ ((__aligned__ (expr))) works.])
1316 fi
1317
1318 dnl check for Make feature
1319 dnl AC_PROG_MAKE_SET is done by Automake.
1320
1321 DEPFLAGS=
1322 MKDEPDIR=":"
1323 deps_frag=deps.mk
1324 dnl check for GNU Make if we have GCC and autodepend is on.
1325 if test "$GCC" = yes && test "$ac_enable_autodepend" = yes; then
1326    AC_MSG_CHECKING([whether we are using GNU Make])
1327    HAVE_GNU_MAKE=no
1328    testval=`${MAKE-make} --version 2>/dev/null | grep 'GNU Make'`
1329    if test "x$testval" != x; then
1330       HAVE_GNU_MAKE=yes
1331    else
1332       ac_enable_autodepend=no
1333    fi
1334    AC_MSG_RESULT([$HAVE_GNU_MAKE])
1335    if test $HAVE_GNU_MAKE = yes; then
1336       AC_MSG_CHECKING([whether gcc understands -MMD -MF])
1337       SAVE_CFLAGS="$CFLAGS"
1338       CFLAGS="$CFLAGS -MMD -MF deps.d -MP"
1339       AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[]], [[]])], , ac_enable_autodepend=no)
1340       CFLAGS="$SAVE_CFLAGS"
1341       test -f deps.d || ac_enable_autodepend=no
1342       rm -rf deps.d
1343       AC_MSG_RESULT([$ac_enable_autodepend])
1344    fi
1345    if test $ac_enable_autodepend = yes; then
1346       DEPFLAGS='-MMD -MF ${DEPDIR}/$*.d -MP'
1347       ## MKDIR_P is documented (see AC_PROG_MKDIR_P) to be parallel-safe.
1348       MKDEPDIR='${MKDIR_P} ${DEPDIR}'
1349       deps_frag=autodeps.mk
1350    fi
1351 fi
1352 deps_frag=$srcdir/src/$deps_frag
1353 AC_SUBST(MKDEPDIR)
1354 AC_SUBST(DEPFLAGS)
1355 AC_SUBST_FILE(deps_frag)
1356
1357
1358 lisp_frag=$srcdir/src/lisp.mk
1359 AC_SUBST_FILE(lisp_frag)
1360
1361
1362 dnl checks for operating system services
1363 AC_SYS_LONG_FILE_NAMES
1364
1365 #### Choose a window system.
1366
1367 AC_PATH_X
1368 if test "$no_x" = yes; then
1369   window_system=none
1370 else
1371   window_system=x11
1372 fi
1373
1374 LD_SWITCH_X_SITE_RPATH=
1375 if test "${x_libraries}" != NONE; then
1376   if test -n "${x_libraries}"; then
1377     LD_SWITCH_X_SITE=-L`echo ${x_libraries} | sed -e "s/:/ -L/g"`
1378     LD_SWITCH_X_SITE_RPATH=-Wl,-rpath,`echo ${x_libraries} | sed -e "s/:/ -Wl,-rpath,/g"`
1379   fi
1380   x_default_search_path=""
1381   x_search_path=${x_libraries}
1382   if test -z "${x_search_path}"; then
1383     x_search_path=/usr/lib
1384   fi
1385   for x_library in `echo ${x_search_path}: | \
1386                     sed -e "s/:/ /g" -e p -e "s:/lib[[^ /]]* :/share :g"`; do
1387     x_search_path="\
1388 ${x_library}/X11/%L/%T/%N%C%S:\
1389 ${x_library}/X11/%l/%T/%N%C%S:\
1390 ${x_library}/X11/%T/%N%C%S:\
1391 ${x_library}/X11/%L/%T/%N%S:\
1392 ${x_library}/X11/%l/%T/%N%S:\
1393 ${x_library}/X11/%T/%N%S"
1394     if test x"${x_default_search_path}" = x; then
1395       x_default_search_path=${x_search_path}
1396     else
1397       x_default_search_path="${x_search_path}:${x_default_search_path}"
1398     fi
1399   done
1400 fi
1401 AC_SUBST(LD_SWITCH_X_SITE_RPATH)
1402
1403 if test "${x_includes}" != NONE && test -n "${x_includes}"; then
1404   C_SWITCH_X_SITE="$isystem"`echo ${x_includes} | sed -e "s/:/ $isystem/g"`
1405 fi
1406
1407 if test x"${x_includes}" = x; then
1408   bitmapdir=/usr/include/X11/bitmaps
1409 else
1410   # accumulate include directories that have X11 bitmap subdirectories
1411   bmd_acc="dummyval"
1412   for bmd in `echo ${x_includes} | sed -e "s/:/ /g"`; do
1413     if test -d "${bmd}/X11/bitmaps"; then
1414       bmd_acc="${bmd_acc}:${bmd}/X11/bitmaps"
1415     fi
1416     if test -d "${bmd}/bitmaps"; then
1417       bmd_acc="${bmd_acc}:${bmd}/bitmaps"
1418     fi
1419   done
1420   if test ${bmd_acc} != "dummyval"; then
1421     bitmapdir=`echo ${bmd_acc} | sed -e "s/^dummyval://"`
1422   fi
1423 fi
1424
1425 HAVE_NS=no
1426 NS_IMPL_COCOA=no
1427 NS_IMPL_GNUSTEP=no
1428 tmp_CPPFLAGS="$CPPFLAGS"
1429 tmp_CFLAGS="$CFLAGS"
1430 CPPFLAGS="$CPPFLAGS -x objective-c"
1431 CFLAGS="$CFLAGS -x objective-c"
1432 TEMACS_LDFLAGS2="\${LDFLAGS}"
1433 GNU_OBJC_CFLAGS=
1434 if test "${with_ns}" != no; then
1435   if test "${opsys}" = darwin; then
1436      NS_IMPL_COCOA=yes
1437      ns_appdir=`pwd`/nextstep/Emacs.app
1438      ns_appbindir=${ns_appdir}/Contents/MacOS
1439      ns_appresdir=${ns_appdir}/Contents/Resources
1440      ns_appsrc=${srcdir}/nextstep/Cocoa/Emacs.base
1441   elif test -f $GNUSTEP_CONFIG_FILE; then
1442      NS_IMPL_GNUSTEP=yes
1443      ns_appdir=`pwd`/nextstep/Emacs.app
1444      ns_appbindir=${ns_appdir}
1445      ns_appresdir=${ns_appdir}/Resources
1446      ns_appsrc=${srcdir}/nextstep/GNUstep/Emacs.base
1447      dnl FIXME sourcing this several times in subshells seems inefficient.
1448      GNUSTEP_SYSTEM_HEADERS="$(. $GNUSTEP_CONFIG_FILE; echo $GNUSTEP_SYSTEM_HEADERS)"
1449      GNUSTEP_SYSTEM_LIBRARIES="$(. $GNUSTEP_CONFIG_FILE; echo $GNUSTEP_SYSTEM_LIBRARIES)"
1450      dnl I seemed to need these as well with GNUstep-startup 0.25.
1451      GNUSTEP_LOCAL_HEADERS="$(. $GNUSTEP_CONFIG_FILE; echo $GNUSTEP_LOCAL_HEADERS)"
1452      GNUSTEP_LOCAL_LIBRARIES="$(. $GNUSTEP_CONFIG_FILE; echo $GNUSTEP_LOCAL_LIBRARIES)"
1453      test "x${GNUSTEP_LOCAL_HEADERS}" != "x" && \
1454        GNUSTEP_LOCAL_HEADERS="-I${GNUSTEP_LOCAL_HEADERS}"
1455      test "x${GNUSTEP_LOCAL_LIBRARIES}" != "x" && \
1456        GNUSTEP_LOCAL_LIBRARIES="-L${GNUSTEP_LOCAL_LIBRARIES}"
1457      CPPFLAGS="$CPPFLAGS -I${GNUSTEP_SYSTEM_HEADERS} ${GNUSTEP_LOCAL_HEADERS}"
1458      CFLAGS="$CFLAGS -I${GNUSTEP_SYSTEM_HEADERS} ${GNUSTEP_LOCAL_HEADERS}"
1459      LDFLAGS="$LDFLAGS -L${GNUSTEP_SYSTEM_LIBRARIES} ${GNUSTEP_LOCAL_LIBRARIES}"
1460      LIB_STANDARD=
1461      START_FILES=
1462      TEMACS_LDFLAGS2=
1463      dnl GNUstep defines BASE_NATIVE_OBJC_EXCEPTIONS to 0 or 1.
1464      dnl If they had chosen to either define it or not, we could have
1465      dnl just used AC_CHECK_DECL here.
1466      AC_CACHE_CHECK(if GNUstep defines BASE_NATIVE_OBJC_EXCEPTIONS,
1467        emacs_cv_objc_exceptions,
1468 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <GNUstepBase/GSConfig.h>]],
1469 [[#if defined BASE_NATIVE_OBJC_EXCEPTIONS && BASE_NATIVE_OBJC_EXCEPTIONS > 0
1470 1;
1471 #else
1472 fail;
1473 #endif]])], emacs_cv_objc_exceptions=yes, emacs_cv_objc_exceptions=no ) )
1474      if test $emacs_cv_objc_exceptions = yes; then
1475        dnl _NATIVE_OBJC_EXCEPTIONS is used by the GNUstep headers.
1476        AC_DEFINE(_NATIVE_OBJC_EXCEPTIONS, 1,
1477          [Define if GNUstep uses ObjC exceptions.])
1478        GNU_OBJC_CFLAGS="-fobjc-exceptions"
1479      fi
1480   fi
1481
1482   dnl This is only used while we test the NS headers, it gets reset below.
1483   CFLAGS="$CFLAGS $GNU_OBJC_CFLAGS"
1484
1485   AC_CHECK_HEADER([AppKit/AppKit.h], [HAVE_NS=yes],
1486                   [AC_MSG_ERROR([`--with-ns' was specified, but the include
1487   files are missing or cannot be compiled.])])
1488   AC_COMPILE_IFELSE([AC_LANG_PROGRAM([#include <Foundation/NSObjCRuntime.h>],
1489                                      [NSInteger i;])],
1490                     ns_have_nsinteger=yes,
1491                     ns_have_nsinteger=no)
1492   if test $ns_have_nsinteger = yes; then
1493     AC_DEFINE(NS_HAVE_NSINTEGER, 1, [Define to 1 if `NSInteger' is defined.])
1494   fi
1495 fi
1496 AC_SUBST(TEMACS_LDFLAGS2)
1497
1498 INSTALL_ARCH_INDEP_EXTRA=install-etc
1499 ns_self_contained=no
1500 ns_frag=/dev/null
1501 NS_OBJ=
1502 NS_OBJC_OBJ=
1503 if test "${HAVE_NS}" = yes; then
1504   if test "$with_toolkit_scroll_bars" = "no"; then
1505     AC_MSG_ERROR([Non-toolkit scroll bars are not implemented for Nextstep.])
1506   fi
1507
1508   window_system=nextstep
1509   with_xft=no
1510   # set up packaging dirs
1511   if test "${EN_NS_SELF_CONTAINED}" = yes; then
1512      ns_self_contained=yes
1513      prefix=${ns_appresdir}
1514      exec_prefix=${ns_appbindir}
1515      dnl This one isn't really used, only archlibdir is.
1516      libexecdir="\${ns_appbindir}/libexec"
1517      archlibdir="\${ns_appbindir}/libexec"
1518      docdir="\${ns_appresdir}/etc"
1519      etcdir="\${ns_appresdir}/etc"
1520      dnl FIXME maybe set datarootdir instead.
1521      dnl That would also get applications, icons, man.
1522      infodir="\${ns_appresdir}/info"
1523      mandir="\${ns_appresdir}/man"
1524      lispdir="\${ns_appresdir}/lisp"
1525      leimdir="\${ns_appresdir}/leim"
1526      INSTALL_ARCH_INDEP_EXTRA=
1527   fi
1528   ns_frag=$srcdir/src/ns.mk
1529   NS_OBJ="fontset.o fringe.o image.o"
1530   NS_OBJC_OBJ="nsterm.o nsfns.o nsmenu.o nsselect.o nsimage.o nsfont.o"
1531 fi
1532 CFLAGS="$tmp_CFLAGS"
1533 CPPFLAGS="$tmp_CPPFLAGS"
1534 AC_SUBST(INSTALL_ARCH_INDEP_EXTRA)
1535 AC_SUBST(ns_self_contained)
1536 AC_SUBST(NS_OBJ)
1537 AC_SUBST(NS_OBJC_OBJ)
1538 AC_SUBST(LIB_STANDARD)
1539 AC_SUBST_FILE(ns_frag)
1540
1541 case "${window_system}" in
1542   x11 )
1543     HAVE_X_WINDOWS=yes
1544     HAVE_X11=yes
1545     case "${with_x_toolkit}" in
1546       athena | lucid ) USE_X_TOOLKIT=LUCID ;;
1547       motif ) USE_X_TOOLKIT=MOTIF ;;
1548       gtk ) with_gtk=yes
1549 dnl Don't set this for GTK.  A lot of tests below assumes Xt when
1550 dnl USE_X_TOOLKIT is set.
1551             USE_X_TOOLKIT=none ;;
1552       gtk3 ) with_gtk3=yes
1553              USE_X_TOOLKIT=none ;;
1554       no ) USE_X_TOOLKIT=none ;;
1555 dnl If user did not say whether to use a toolkit, make this decision later:
1556 dnl use the toolkit if we have gtk, or X11R5 or newer.
1557       * ) USE_X_TOOLKIT=maybe ;;
1558     esac
1559   ;;
1560   nextstep | none )
1561     HAVE_X_WINDOWS=no
1562     HAVE_X11=no
1563     USE_X_TOOLKIT=none
1564   ;;
1565 esac
1566
1567 if test "$window_system" = none && test "X$with_x" != "Xno"; then
1568    AC_CHECK_PROG(HAVE_XSERVER, X, true, false)
1569    if test "$HAVE_XSERVER" = true ||
1570       test -n "$DISPLAY" ||
1571       test "`echo /usr/lib/libX11.*`" != "/usr/lib/libX11.*"; then
1572         AC_MSG_ERROR([You seem to be running X, but no X development libraries
1573 were found.  You should install the relevant development files for X
1574 and for the toolkit you want, such as Gtk+, Lesstif or Motif.  Also make
1575 sure you have development files for image handling, i.e.
1576 tiff, gif, jpeg, png and xpm.
1577 If you are sure you want Emacs compiled without X window support, pass
1578   --without-x
1579 to configure.])
1580    fi
1581 fi
1582
1583 ### If we're using X11, we should use the X menu package.
1584 HAVE_MENUS=no
1585 case ${HAVE_X11} in
1586   yes ) HAVE_MENUS=yes ;;
1587 esac
1588
1589 # Does the opsystem file prohibit the use of the GNU malloc?
1590 # Assume not, until told otherwise.
1591 GNU_MALLOC=yes
1592
1593 AC_CACHE_CHECK(
1594   [whether malloc is Doug Lea style],
1595   [emacs_cv_var_doug_lea_malloc],
1596   [AC_LINK_IFELSE(
1597      [AC_LANG_PROGRAM(
1598         [[#include <malloc.h>
1599           static void hook (void) {}]],
1600         [[malloc_set_state (malloc_get_state ());
1601           __after_morecore_hook = hook;
1602           __malloc_initialize_hook = hook;]])],
1603      [emacs_cv_var_doug_lea_malloc=yes],
1604      [emacs_cv_var_doug_lea_malloc=no])])
1605 doug_lea_malloc=$emacs_cv_var_doug_lea_malloc
1606
1607
1608 dnl See comments in aix4-2.h about maybe using system malloc there.
1609 system_malloc=no
1610 case "$opsys" in
1611   ## darwin ld insists on the use of malloc routines in the System framework.
1612   darwin|sol2-10) system_malloc=yes ;;
1613 esac
1614
1615 if test "${system_malloc}" = "yes"; then
1616   AC_DEFINE(SYSTEM_MALLOC, 1, [Define to use system malloc.])
1617   GNU_MALLOC=no
1618   GNU_MALLOC_reason="
1619     (The GNU allocators don't work with this system configuration.)"
1620   GMALLOC_OBJ=
1621   VMLIMIT_OBJ=
1622 else
1623   test "$doug_lea_malloc" != "yes" && GMALLOC_OBJ=gmalloc.o
1624   VMLIMIT_OBJ=vm-limit.o
1625 fi
1626 AC_SUBST(GMALLOC_OBJ)
1627 AC_SUBST(VMLIMIT_OBJ)
1628
1629 if test "$doug_lea_malloc" = "yes" ; then
1630   if test "$GNU_MALLOC" = yes ; then
1631     GNU_MALLOC_reason="
1632       (Using Doug Lea's new malloc from the GNU C Library.)"
1633   fi
1634   AC_DEFINE(DOUG_LEA_MALLOC, 1,
1635             [Define to 1 if you are using the GNU C Library.])
1636
1637   ## Use mmap directly for allocating larger buffers.
1638   ## FIXME this comes from src/s/{gnu,gnu-linux}.h:
1639   ## #ifdef DOUG_LEA_MALLOC; #undef REL_ALLOC; #endif
1640   ## Does the AC_FUNC_MMAP test below make this check unnecessary?
1641   case "$opsys" in
1642     gnu*) REL_ALLOC=no ;;
1643   esac
1644 fi
1645
1646 if test x"${REL_ALLOC}" = x; then
1647   REL_ALLOC=${GNU_MALLOC}
1648 fi
1649
1650 use_mmap_for_buffers=no
1651 case "$opsys" in
1652   cygwin|freebsd|irix6-5) use_mmap_for_buffers=yes ;;
1653 esac
1654
1655 AC_FUNC_MMAP
1656 if test $use_mmap_for_buffers = yes; then
1657   AC_DEFINE(USE_MMAP_FOR_BUFFERS, 1, [Define to use mmap to allocate buffer text.])
1658   REL_ALLOC=no
1659 fi
1660
1661 LIBS="$LIBS_SYSTEM $LIBS"
1662
1663 dnl If found, this defines HAVE_LIBDNET, which m/pmax.h checks,
1664 dnl and also adds -ldnet to LIBS, which Autoconf uses for checks.
1665 AC_CHECK_LIB(dnet, dnet_ntoa)
1666 dnl This causes -lresolv to get used in subsequent tests,
1667 dnl which causes failures on some systems such as HPUX 9.
1668 dnl AC_CHECK_LIB(resolv, gethostbyname)
1669
1670 dnl FIXME replace main with a function we actually want from this library.
1671 AC_CHECK_LIB(Xbsd, main, LD_SWITCH_X_SITE="$LD_SWITCH_X_SITE -lXbsd")
1672
1673 dnl Check if pthreads is available.
1674 LIB_PTHREAD=
1675 AC_CHECK_HEADERS_ONCE(pthread.h)
1676 if test "$ac_cv_header_pthread_h"; then
1677   dnl gmalloc.c uses pthread_atfork, which is not available on older-style
1678   dnl hosts such as MirBSD 10, so test for pthread_atfork instead of merely
1679   dnl testing for pthread_self if Emacs uses gmalloc.c.
1680   if test "$GMALLOC_OBJ" = gmalloc.o; then
1681     emacs_pthread_function=pthread_atfork
1682   else
1683     emacs_pthread_function=pthread_self
1684   fi
1685   AC_CHECK_LIB(pthread, $emacs_pthread_function, HAVE_PTHREAD=yes)
1686 fi
1687 if test "$HAVE_PTHREAD" = yes; then
1688   case "${canonical}" in
1689     *-hpux*) ;;
1690     *) LIB_PTHREAD="-lpthread"
1691        LIBS="$LIB_PTHREAD $LIBS" ;;
1692   esac
1693   AC_DEFINE(HAVE_PTHREAD, 1, [Define to 1 if you have pthread (-lpthread).])
1694 fi
1695 AC_SUBST([LIB_PTHREAD])
1696
1697 AC_CHECK_LIB(pthreads, cma_open)
1698
1699 ## Note: when using cpp in s/aix4.2.h, this definition depended on
1700 ## HAVE_LIBPTHREADS.  That was not defined earlier in configure when
1701 ## the system file was sourced.  Hence the value of LIBS_SYSTEM
1702 ## added to LIBS in configure would never contain the pthreads part,
1703 ## but the value used in Makefiles might.  FIXME?
1704 ##
1705 ## -lpthreads seems to be necessary for Xlib in X11R6, and should
1706 ## be harmless on older versions of X where it happens to exist.
1707 test "$opsys" = "aix4-2" && \
1708   test $ac_cv_lib_pthreads_cma_open = yes && \
1709   LIBS_SYSTEM="$LIBS_SYSTEM -lpthreads"
1710
1711 dnl Check for need for bigtoc support on IBM AIX
1712
1713 case ${host_os} in
1714 aix*)
1715   AC_CACHE_CHECK([for -bbigtoc option], [gdb_cv_bigtoc], [
1716     case $GCC in
1717     yes) gdb_cv_bigtoc=-Wl,-bbigtoc ;;
1718     *) gdb_cv_bigtoc=-bbigtoc ;;
1719     esac
1720
1721     LDFLAGS=$LDFLAGS\ $gdb_cv_bigtoc
1722     AC_LINK_IFELSE([AC_LANG_PROGRAM([[]], [[int i;]])], [], [gdb_cv_bigtoc=])
1723   ])
1724   ;;
1725 esac
1726
1727 # Change CFLAGS and CPPFLAGS temporarily so that C_SWITCH_X_SITE gets
1728 # used for the tests that follow.  We set them back to REAL_CFLAGS and
1729 # REAL_CPPFLAGS later on.
1730
1731 REAL_CFLAGS="$CFLAGS"
1732 REAL_CPPFLAGS="$CPPFLAGS"
1733
1734 if test "${HAVE_X11}" = "yes"; then
1735   DEFS="$C_SWITCH_X_SITE $DEFS"
1736   LDFLAGS="$LDFLAGS $LD_SWITCH_X_SITE"
1737   LIBS="-lX11 $LIBS"
1738   CFLAGS="$C_SWITCH_X_SITE $CFLAGS"
1739   CPPFLAGS="$C_SWITCH_X_SITE $CPPFLAGS"
1740
1741   # On Solaris, arrange for LD_RUN_PATH to point to the X libraries for tests.
1742   # This is handled by LD_SWITCH_X_SITE_RPATH during the real build,
1743   # but it's more convenient here to set LD_RUN_PATH since this
1744   # also works on hosts that don't understand LD_SWITCH_X_SITE_RPATH.
1745   if test "${x_libraries}" != NONE && test -n "${x_libraries}"; then
1746     LD_RUN_PATH=$x_libraries${LD_RUN_PATH+:}$LD_RUN_PATH
1747     export LD_RUN_PATH
1748   fi
1749
1750   if test "${opsys}" = "gnu-linux"; then
1751     AC_MSG_CHECKING(whether X on GNU/Linux needs -b to link)
1752     AC_LINK_IFELSE([AC_LANG_PROGRAM([[]],
1753      [[XOpenDisplay ("foo");]])],
1754      [xgnu_linux_first_failure=no],
1755      [xgnu_linux_first_failure=yes])
1756     if test "${xgnu_linux_first_failure}" = "yes"; then
1757       OLD_LD_SWITCH_X_SITE="$LD_SWITCH_X_SITE"
1758       OLD_C_SWITCH_X_SITE="$C_SWITCH_X_SITE"
1759       OLD_CPPFLAGS="$CPPFLAGS"
1760       OLD_LIBS="$LIBS"
1761       LD_SWITCH_X_SITE="$LD_SWITCH_X_SITE -b i486-linuxaout"
1762       C_SWITCH_X_SITE="$C_SWITCH_X_SITE -b i486-linuxaout"
1763       CPPFLAGS="$CPPFLAGS -b i486-linuxaout"
1764       LIBS="$LIBS -b i486-linuxaout"
1765       AC_LINK_IFELSE([AC_LANG_PROGRAM([[]],
1766        [[XOpenDisplay ("foo");]])],
1767        [xgnu_linux_second_failure=no],
1768        [xgnu_linux_second_failure=yes])
1769       if test "${xgnu_linux_second_failure}" = "yes"; then
1770         # If we get the same failure with -b, there is no use adding -b.
1771         # So take it out.  This plays safe.
1772         LD_SWITCH_X_SITE="$OLD_LD_SWITCH_X_SITE"
1773         C_SWITCH_X_SITE="$OLD_C_SWITCH_X_SITE"
1774         CPPFLAGS="$OLD_CPPFLAGS"
1775         LIBS="$OLD_LIBS"
1776         AC_MSG_RESULT(no)
1777       else
1778         AC_MSG_RESULT(yes)
1779       fi
1780     else
1781       AC_MSG_RESULT(no)
1782     fi
1783   fi
1784
1785   # Reportedly, some broken Solaris systems have XKBlib.h but are missing
1786   # header files included from there.
1787   AC_MSG_CHECKING(for Xkb)
1788   AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <X11/Xlib.h>
1789 #include <X11/XKBlib.h>]],
1790         [[XkbDescPtr kb = XkbGetKeyboard (0, XkbAllComponentsMask, XkbUseCoreKbd);]])],
1791         emacs_xkb=yes, emacs_xkb=no)
1792   AC_MSG_RESULT($emacs_xkb)
1793   if test $emacs_xkb = yes; then
1794     AC_DEFINE(HAVE_XKBGETKEYBOARD, 1, [Define to 1 if you have the XkbGetKeyboard function.])
1795   fi
1796
1797   AC_CHECK_FUNCS(XrmSetDatabase XScreenResourceString \
1798 XScreenNumberOfScreen)
1799 fi
1800
1801 if test "${window_system}" = "x11"; then
1802   AC_MSG_CHECKING(X11 version 6)
1803   AC_CACHE_VAL(emacs_cv_x11_version_6,
1804   [AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <X11/Xlib.h>]],
1805 [[#if XlibSpecificationRelease < 6
1806 fail;
1807 #endif
1808 ]])], emacs_cv_x11_version_6=yes, emacs_cv_x11_version_6=no)])
1809   if test $emacs_cv_x11_version_6 = yes; then
1810     AC_MSG_RESULT(6 or newer)
1811     AC_DEFINE(HAVE_X11R6, 1,
1812               [Define to 1 if you have the X11R6 or newer version of Xlib.])
1813     AC_DEFINE(HAVE_X_I18N, 1, [Define if you have usable i18n support.])
1814     ## inoue@ainet.or.jp says Solaris has a bug related to X11R6-style
1815     ## XIM support.
1816     case "$opsys" in
1817       sol2-*) : ;;
1818       *) AC_DEFINE(HAVE_X11R6_XIM, 1,
1819            [Define if you have usable X11R6-style XIM support.])
1820          ;;
1821     esac
1822   else
1823     AC_MSG_RESULT(before 6)
1824   fi
1825 fi
1826
1827
1828 ### Use -lrsvg-2 if available, unless `--with-rsvg=no' is specified.
1829 HAVE_RSVG=no
1830 if test "${HAVE_X11}" = "yes" || test "${HAVE_NS}" = "yes"; then
1831   if test "${with_rsvg}" != "no"; then
1832     RSVG_REQUIRED=2.11.0
1833     RSVG_MODULE="librsvg-2.0 >= $RSVG_REQUIRED"
1834
1835     PKG_CHECK_MODULES(RSVG, $RSVG_MODULE, HAVE_RSVG=yes, :)
1836     AC_SUBST(RSVG_CFLAGS)
1837     AC_SUBST(RSVG_LIBS)
1838
1839     if test $HAVE_RSVG = yes; then
1840       AC_DEFINE(HAVE_RSVG, 1, [Define to 1 if using librsvg.])
1841       CFLAGS="$CFLAGS $RSVG_CFLAGS"
1842       LIBS="$RSVG_LIBS $LIBS"
1843     fi
1844   fi
1845 fi
1846
1847 HAVE_IMAGEMAGICK=no
1848 if test "${HAVE_X11}" = "yes"; then
1849   if test "${with_imagemagick}" != "no"; then
1850     ## 6.2.8 is the earliest version known to work, but earlier versions
1851     ## might work - let us know if you find one.
1852     ## 6.0.7 does not work.  See bug#7955.
1853     IMAGEMAGICK_MODULE="Wand >= 6.2.8"
1854     PKG_CHECK_MODULES(IMAGEMAGICK, $IMAGEMAGICK_MODULE, HAVE_IMAGEMAGICK=yes, :)
1855     AC_SUBST(IMAGEMAGICK_CFLAGS)
1856     AC_SUBST(IMAGEMAGICK_LIBS)
1857
1858     if test $HAVE_IMAGEMAGICK = yes; then
1859       AC_DEFINE(HAVE_IMAGEMAGICK, 1, [Define to 1 if using imagemagick.])
1860       CFLAGS="$CFLAGS $IMAGEMAGICK_CFLAGS"
1861       LIBS="$IMAGEMAGICK_LIBS $LIBS"
1862       AC_CHECK_FUNCS(MagickExportImagePixels MagickMergeImageLayers)
1863     fi
1864   fi
1865 fi
1866
1867
1868 HAVE_GTK=no
1869 GTK_OBJ=
1870 if test "${with_gtk3}" = "yes"; then
1871   GLIB_REQUIRED=2.28
1872   GTK_REQUIRED=3.0
1873   GTK_MODULES="gtk+-3.0 >= $GTK_REQUIRED glib-2.0 >= $GLIB_REQUIRED"
1874
1875   dnl Checks for libraries.
1876   PKG_CHECK_MODULES(GTK, $GTK_MODULES, pkg_check_gtk=yes, pkg_check_gtk=no)
1877   if test "$pkg_check_gtk" = "no" && test "$USE_X_TOOLKIT" != "maybe"; then
1878      AC_MSG_ERROR($GTK_PKG_ERRORS)
1879   fi
1880   AC_DEFINE(HAVE_GTK3, 1, [Define to 1 if using GTK 3 or later.])
1881   GTK_OBJ=emacsgtkfixed.o
1882 fi
1883
1884 if test "$pkg_check_gtk" != "yes"; then
1885   HAVE_GTK=no
1886 if test "${with_gtk}" = "yes" || test "$USE_X_TOOLKIT" = "maybe"; then
1887   GLIB_REQUIRED=2.10
1888   GTK_REQUIRED=2.10
1889   GTK_MODULES="gtk+-2.0 >= $GTK_REQUIRED glib-2.0 >= $GLIB_REQUIRED"
1890
1891   dnl Checks for libraries.
1892   PKG_CHECK_MODULES(GTK, $GTK_MODULES, pkg_check_gtk=yes, pkg_check_gtk=no)
1893   if test "$pkg_check_gtk" = "no" && test "$USE_X_TOOLKIT" != "maybe"; then
1894      AC_MSG_ERROR($GTK_PKG_ERRORS)
1895   fi
1896 fi
1897 fi
1898
1899 if test x"$pkg_check_gtk" = xyes; then
1900
1901   AC_SUBST(GTK_CFLAGS)
1902   AC_SUBST(GTK_LIBS)
1903   C_SWITCH_X_SITE="$C_SWITCH_X_SITE $GTK_CFLAGS"
1904   CFLAGS="$CFLAGS $GTK_CFLAGS"
1905   LIBS="$GTK_LIBS $LIBS"
1906   dnl Try to compile a simple GTK program.
1907   GTK_COMPILES=no
1908   AC_CHECK_FUNCS(gtk_main, GTK_COMPILES=yes)
1909   if test "${GTK_COMPILES}" != "yes"; then
1910     if test "$USE_X_TOOLKIT" != "maybe"; then
1911       AC_MSG_ERROR([Gtk+ wanted, but it does not compile, see config.log.  Maybe some x11-devel files missing?]);
1912     fi
1913   else
1914     HAVE_GTK=yes
1915     AC_DEFINE(USE_GTK, 1, [Define to 1 if using GTK.])
1916     GTK_OBJ="gtkutil.o $GTK_OBJ"
1917     USE_X_TOOLKIT=none
1918     if $PKG_CONFIG --atleast-version=2.10 gtk+-2.0; then
1919       :
1920     else
1921       AC_MSG_WARN([[Your version of Gtk+ will have problems with
1922        closing open displays.  This is no problem if you just use
1923        one display, but if you use more than one and close one of them
1924        Emacs may crash.]])
1925       sleep 3
1926     fi
1927   fi
1928
1929 fi
1930 AC_SUBST(GTK_OBJ)
1931
1932
1933 if test "${HAVE_GTK}" = "yes"; then
1934
1935   dnl  GTK scrollbars resemble toolkit scrollbars a lot, so to avoid
1936   dnl  a lot if #ifdef:s, say we have toolkit scrollbars.
1937   if test "$with_toolkit_scroll_bars" != no; then
1938     with_toolkit_scroll_bars=yes
1939   fi
1940
1941   dnl  Check if we have the old file selection dialog declared and
1942   dnl  in the link library.  In 2.x it may be in the library,
1943   dnl  but not declared if deprecated featured has been selected out.
1944   dnl  AC_CHECK_DECL checks for a macro, so check for GTK_TYPE_FILE_SELECTION.
1945   HAVE_GTK_FILE_SELECTION=no
1946   AC_CHECK_DECL(GTK_TYPE_FILE_SELECTION, HAVE_GTK_FILE_SELECTION=yes,
1947                    HAVE_GTK_FILE_SELECTION=no, [AC_INCLUDES_DEFAULT
1948 #include <gtk/gtk.h>])
1949   if test "$HAVE_GTK_FILE_SELECTION" = yes; then
1950     AC_CHECK_FUNCS(gtk_file_selection_new)
1951   fi
1952
1953
1954   dnl Check for functions introduced in 2.14 and later.
1955   AC_CHECK_FUNCS(gtk_widget_get_window gtk_widget_set_has_window \
1956                  gtk_dialog_get_action_area gtk_widget_get_sensitive \
1957                  gtk_widget_get_mapped gtk_adjustment_get_page_size \
1958                  gtk_orientable_set_orientation \
1959                  gtk_window_set_has_resize_grip)
1960 fi
1961
1962 dnl D-Bus has been tested under GNU/Linux only.  Must be adapted for
1963 dnl other platforms.
1964 HAVE_DBUS=no
1965 DBUS_OBJ=
1966 if test "${with_dbus}" = "yes"; then
1967    PKG_CHECK_MODULES(DBUS, dbus-1 >= 1.0, HAVE_DBUS=yes, HAVE_DBUS=no)
1968    if test "$HAVE_DBUS" = yes; then
1969      LIBS="$LIBS $DBUS_LIBS"
1970      AC_DEFINE(HAVE_DBUS, 1, [Define to 1 if using D-Bus.])
1971      dnl dbus_watch_get_unix_fd has been introduced in D-Bus 1.1.1.
1972      dnl dbus_type_is_valid and dbus_validate_* have been introduced in
1973      dnl D-Bus 1.5.12.
1974      AC_CHECK_FUNCS(dbus_watch_get_unix_fd \
1975                     dbus_type_is_valid \
1976                     dbus_validate_bus_name \
1977                     dbus_validate_path \
1978                     dbus_validate_interface \
1979                     dbus_validate_member)
1980      DBUS_OBJ=dbusbind.o
1981    fi
1982 fi
1983 AC_SUBST(DBUS_OBJ)
1984
1985 dnl GSettings has been tested under GNU/Linux only.
1986 HAVE_GSETTINGS=no
1987 if test "${HAVE_X11}" = "yes" && test "${with_gsettings}" = "yes"; then
1988    PKG_CHECK_MODULES(GSETTINGS, gio-2.0 >= 2.26, HAVE_GSETTINGS=yes, HAVE_GSETTINGS=no)
1989    if test "$HAVE_GSETTINGS" = "yes"; then
1990       AC_DEFINE(HAVE_GSETTINGS, 1, [Define to 1 if using GSettings.])
1991       SETTINGS_CFLAGS="$GSETTINGS_CFLAGS"
1992       SETTINGS_LIBS="$GSETTINGS_LIBS"
1993    fi
1994 fi
1995
1996 dnl GConf has been tested under GNU/Linux only.
1997 dnl The version is really arbitrary, it is about the same age as Gtk+ 2.6.
1998 HAVE_GCONF=no
1999 if test "${HAVE_X11}" = "yes" && test "${with_gconf}" = "yes"; then
2000    PKG_CHECK_MODULES(GCONF, gconf-2.0 >= 2.13, HAVE_GCONF=yes, HAVE_GCONF=no)
2001    if test "$HAVE_GCONF" = yes; then
2002       AC_DEFINE(HAVE_GCONF, 1, [Define to 1 if using GConf.])
2003       dnl Newer GConf doesn't link with g_objects, so this is not defined.
2004       SETTINGS_CFLAGS="$SETTINGS_CFLAGS $GCONF_CFLAGS"
2005       SETTINGS_LIBS="$SETTINGS_LIBS $GCONF_LIBS"
2006    fi
2007 fi
2008
2009 if test "$HAVE_GSETTINGS" = "yes" || test "$HAVE_GCONF" = "yes"; then
2010     SAVE_CFLAGS="$CFLAGS"
2011     SAVE_LIBS="$LIBS"
2012     CFLAGS="$SETTINGS_CFLAGS $CFLAGS"
2013     LIBS="$SETTINGS_LIBS $LIBS"
2014     AC_CHECK_FUNCS([g_type_init])
2015     CFLAGS="$SAVE_CFLAGS"
2016     LIBS="$SAVE_LIBS"
2017 fi
2018 AC_SUBST(SETTINGS_CFLAGS)
2019 AC_SUBST(SETTINGS_LIBS)
2020
2021
2022 dnl SELinux is available for GNU/Linux only.
2023 HAVE_LIBSELINUX=no
2024 LIBSELINUX_LIBS=
2025 if test "${with_selinux}" = "yes"; then
2026    AC_CHECK_LIB([selinux], [lgetfilecon], HAVE_LIBSELINUX=yes, HAVE_LIBSELINUX=no)
2027    if test "$HAVE_LIBSELINUX" = yes; then
2028       AC_DEFINE(HAVE_LIBSELINUX, 1, [Define to 1 if using SELinux.])
2029       LIBSELINUX_LIBS=-lselinux
2030    fi
2031 fi
2032 AC_SUBST(LIBSELINUX_LIBS)
2033
2034 HAVE_GNUTLS=no
2035 HAVE_GNUTLS_CALLBACK_CERTIFICATE_VERIFY=no
2036 if test "${with_gnutls}" = "yes" ; then
2037   PKG_CHECK_MODULES([LIBGNUTLS], [gnutls >= 2.6.6], HAVE_GNUTLS=yes, HAVE_GNUTLS=no)
2038   if test "${HAVE_GNUTLS}" = "yes"; then
2039     AC_DEFINE(HAVE_GNUTLS, 1, [Define if using GnuTLS.])
2040   fi
2041
2042   CFLAGS="$CFLAGS $LIBGNUTLS_CFLAGS"
2043   LIBS="$LIBGNUTLS_LIBS $LIBS"
2044   AC_CHECK_FUNCS(gnutls_certificate_set_verify_function, HAVE_GNUTLS_CALLBACK_CERTIFICATE_VERIFY=yes)
2045
2046   if test "${HAVE_GNUTLS_CALLBACK_CERTIFICATE_VERIFY}" = "yes"; then
2047     AC_DEFINE(HAVE_GNUTLS_CALLBACK_CERTIFICATE_VERIFY, 1, [Define if using GnuTLS certificate verification callbacks.])
2048   fi
2049 fi
2050
2051 AC_SUBST(LIBGNUTLS_LIBS)
2052 AC_SUBST(LIBGNUTLS_CFLAGS)
2053
2054 dnl Do not put whitespace before the #include statements below.
2055 dnl Older compilers (eg sunos4 cc) choke on it.
2056 HAVE_XAW3D=no
2057 LUCID_LIBW=
2058 if test x"${USE_X_TOOLKIT}" = xmaybe || test x"${USE_X_TOOLKIT}" = xLUCID; then
2059   if test "$with_xaw3d" != no; then
2060     AC_MSG_CHECKING(for xaw3d)
2061     AC_CACHE_VAL(emacs_cv_xaw3d,
2062     [AC_LINK_IFELSE([AC_LANG_PROGRAM([[
2063 #include <X11/Intrinsic.h>
2064 #include <X11/Xaw3d/Simple.h>]],
2065       [[]])],
2066       [AC_CHECK_LIB(Xaw3d, XawScrollbarSetThumb,
2067                     emacs_cv_xaw3d=yes, emacs_cv_xaw3d=no)],
2068       emacs_cv_xaw3d=no)])
2069   else
2070     emacs_cv_xaw3d=no
2071   fi
2072   if test $emacs_cv_xaw3d = yes; then
2073     AC_MSG_RESULT([yes; using Lucid toolkit])
2074     USE_X_TOOLKIT=LUCID
2075     HAVE_XAW3D=yes
2076     LUCID_LIBW=-lXaw3d
2077     AC_DEFINE(HAVE_XAW3D, 1,
2078               [Define to 1 if you have the Xaw3d library (-lXaw3d).])
2079   else
2080     AC_MSG_RESULT(no)
2081     AC_MSG_CHECKING(for libXaw)
2082     AC_CACHE_VAL(emacs_cv_xaw,
2083     [AC_LINK_IFELSE([AC_LANG_PROGRAM([[
2084 #include <X11/Intrinsic.h>
2085 #include <X11/Xaw/Simple.h>]],
2086       [[]])],
2087       emacs_cv_xaw=yes,
2088       emacs_cv_xaw=no)])
2089     if test $emacs_cv_xaw = yes; then
2090       AC_MSG_RESULT([yes; using Lucid toolkit])
2091       USE_X_TOOLKIT=LUCID
2092       LUCID_LIBW=-lXaw
2093     elif test x"${USE_X_TOOLKIT}" = xLUCID; then
2094       AC_MSG_ERROR([Lucid toolkit requires X11/Xaw include files])
2095     else
2096       AC_MSG_ERROR([No X toolkit could be found.
2097 If you are sure you want Emacs compiled without an X toolkit, pass
2098   --with-x-toolkit=no
2099 to configure.  Otherwise, install the development libraries for the toolkit
2100 that you want to use (e.g. Gtk+) and re-run configure.])
2101     fi
2102   fi
2103 fi
2104
2105 X_TOOLKIT_TYPE=$USE_X_TOOLKIT
2106
2107 LIBXTR6=
2108 if test "${USE_X_TOOLKIT}" != "none"; then
2109   AC_MSG_CHECKING(X11 toolkit version)
2110   AC_CACHE_VAL(emacs_cv_x11_toolkit_version_6,
2111   [AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <X11/Intrinsic.h>]],
2112 [[#if XtSpecificationRelease < 6
2113 fail;
2114 #endif
2115 ]])], emacs_cv_x11_toolkit_version_6=yes, emacs_cv_x11_toolkit_version_6=no)])
2116   HAVE_X11XTR6=$emacs_cv_x11_toolkit_version_6
2117   if test $emacs_cv_x11_toolkit_version_6 = yes; then
2118     AC_MSG_RESULT(6 or newer)
2119     AC_DEFINE(HAVE_X11XTR6, 1,
2120               [Define to 1 if you have the X11R6 or newer version of Xt.])
2121     LIBXTR6="-lSM -lICE"
2122     case "$opsys" in
2123       ## Use libw.a along with X11R6 Xt.
2124       unixware) LIBXTR6="$LIBXTR6 -lw" ;;
2125     esac
2126   else
2127     AC_MSG_RESULT(before 6)
2128   fi
2129
2130 dnl If using toolkit, check whether libXmu.a exists.
2131 dnl tranle@intellicorp.com says libXmu.a can need XtMalloc in libXt.a to link.
2132   OLDLIBS="$LIBS"
2133   if test x$HAVE_X11XTR6 = xyes; then
2134     LIBS="-lXt -lSM -lICE $LIBS"
2135   else
2136     LIBS="-lXt $LIBS"
2137   fi
2138   AC_CHECK_LIB(Xmu, XmuConvertStandardSelection)
2139   test $ac_cv_lib_Xmu_XmuConvertStandardSelection = no && LIBS="$OLDLIBS"
2140 fi
2141 AC_SUBST(LIBXTR6)
2142
2143 dnl FIXME the logic here seems weird, but this is what cpp was doing.
2144 dnl Why not just test for libxmu in the normal way?
2145 LIBXMU=-lXmu
2146 case $opsys in
2147   ## These systems don't supply Xmu.
2148   hpux* | aix4-2 )
2149     test "X$ac_cv_lib_Xmu_XmuConvertStandardSelection" != "Xyes" && LIBXMU=
2150     ;;
2151 esac
2152 AC_SUBST(LIBXMU)
2153
2154 # On Irix 6.5, at least, we need XShapeQueryExtension from -lXext for Xaw3D.
2155 if test "${HAVE_X11}" = "yes"; then
2156   if test "${USE_X_TOOLKIT}" != "none"; then
2157     AC_CHECK_LIB(Xext, XShapeQueryExtension)
2158   fi
2159 fi
2160
2161 LIBXP=
2162 if test "${USE_X_TOOLKIT}" = "MOTIF"; then
2163   AC_CACHE_CHECK(for Motif version 2.1, emacs_cv_motif_version_2_1,
2164   [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <Xm/Xm.h>]],
2165     [[#if XmVERSION > 2 || (XmVERSION == 2 && XmREVISION >= 1)
2166 int x = 5;
2167 #else
2168 Motif version prior to 2.1.
2169 #endif]])],
2170     emacs_cv_motif_version_2_1=yes, emacs_cv_motif_version_2_1=no)])
2171   if test $emacs_cv_motif_version_2_1 = yes; then
2172     AC_CHECK_LIB(Xp, XpCreateContext, LIBXP=-lXp)
2173   else
2174     AC_CACHE_CHECK(for LessTif where some systems put it, emacs_cv_lesstif,
2175     # We put this in CFLAGS temporarily to precede other -I options
2176     # that might be in CFLAGS temporarily.
2177     # We put this in CPPFLAGS where it precedes the other -I options.
2178     OLD_CPPFLAGS=$CPPFLAGS
2179     OLD_CFLAGS=$CFLAGS
2180     CPPFLAGS="-I/usr/X11R6/LessTif/Motif1.2/include $CPPFLAGS"
2181     CFLAGS="-I/usr/X11R6/LessTif/Motif1.2/include $CFLAGS"
2182     [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include </usr/X11R6/LessTif/Motif1.2/include/Xm/Xm.h>]],
2183       [[int x = 5;]])],
2184       emacs_cv_lesstif=yes, emacs_cv_lesstif=no)])
2185     if test $emacs_cv_lesstif = yes; then
2186       # Make sure this -I option remains in CPPFLAGS after it is set
2187       # back to REAL_CPPFLAGS.
2188       # There is no need to change REAL_CFLAGS, because REAL_CFLAGS does not
2189       # have those other -I options anyway.  Ultimately, having this
2190       # directory ultimately in CPPFLAGS will be enough.
2191       REAL_CPPFLAGS="-I/usr/X11R6/LessTif/Motif1.2/include $REAL_CPPFLAGS"
2192       LDFLAGS="-L/usr/X11R6/LessTif/Motif1.2/lib $LDFLAGS"
2193     else
2194       CFLAGS=$OLD_CFLAGS
2195       CPPFLAGS=$OLD_CPPFLAGS
2196     fi
2197   fi
2198   AC_CHECK_HEADER([Xm/BulletinB.h], [],
2199     [AC_MSG_ERROR([Motif toolkit requested but requirements not found.])])
2200 fi
2201
2202 dnl Use toolkit scroll bars if configured for GTK or X toolkit and either
2203 dnl using Motif or Xaw3d is available, and unless
2204 dnl --with-toolkit-scroll-bars=no was specified.
2205
2206 AH_TEMPLATE(USE_TOOLKIT_SCROLL_BARS,
2207             [Define to 1 if we should use toolkit scroll bars.])dnl
2208 USE_TOOLKIT_SCROLL_BARS=no
2209 if test "${with_toolkit_scroll_bars}" != "no"; then
2210   if test "${USE_X_TOOLKIT}" != "none"; then
2211     if test "${USE_X_TOOLKIT}" = "MOTIF"; then
2212       AC_DEFINE(USE_TOOLKIT_SCROLL_BARS)
2213       HAVE_XAW3D=no
2214       USE_TOOLKIT_SCROLL_BARS=yes
2215     elif test "${HAVE_XAW3D}" = "yes" || test "${USE_X_TOOLKIT}" = "LUCID"; then
2216       AC_DEFINE(USE_TOOLKIT_SCROLL_BARS)
2217       USE_TOOLKIT_SCROLL_BARS=yes
2218     fi
2219   elif test "${HAVE_GTK}" = "yes"; then
2220     AC_DEFINE(USE_TOOLKIT_SCROLL_BARS)
2221     USE_TOOLKIT_SCROLL_BARS=yes
2222   elif test "${HAVE_NS}" = "yes"; then
2223     AC_DEFINE(USE_TOOLKIT_SCROLL_BARS)
2224     USE_TOOLKIT_SCROLL_BARS=yes
2225   fi
2226 fi
2227
2228 dnl See if XIM is available.
2229 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
2230           #include <X11/Xlib.h>
2231           #include <X11/Xresource.h>]],
2232          [[XIMProc  callback;]])],
2233          [HAVE_XIM=yes
2234          AC_DEFINE(HAVE_XIM, 1, [Define to 1 if XIM is available])],
2235          HAVE_XIM=no)
2236
2237 dnl `--with-xim' now controls only the initial value of use_xim at run time.
2238
2239 if test "${with_xim}" != "no"; then
2240   AC_DEFINE(USE_XIM, 1,
2241             [Define to 1 if we should use XIM, if it is available.])
2242 fi
2243
2244
2245 if test "${HAVE_XIM}" != "no"; then
2246   late_CFLAGS=$CFLAGS
2247   if test "$GCC" = yes; then
2248     CFLAGS="$CFLAGS --pedantic-errors"
2249   fi
2250   AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
2251 #include <X11/Xlib.h>
2252 #include <X11/Xresource.h>]],
2253 [[Display *display;
2254 XrmDatabase db;
2255 char *res_name;
2256 char *res_class;
2257 XIMProc  callback;
2258 XPointer *client_data;
2259 #ifndef __GNUC__
2260 /* If we're not using GCC, it's probably not XFree86, and this is
2261    probably right, but we can't use something like --pedantic-errors.  */
2262 extern Bool XRegisterIMInstantiateCallback(Display*, XrmDatabase, char*,
2263                                            char*, XIMProc, XPointer*);
2264 #endif
2265 (void)XRegisterIMInstantiateCallback(display, db, res_name, res_class, callback,
2266    client_data);]])],
2267     [emacs_cv_arg6_star=yes])
2268   AH_TEMPLATE(XRegisterIMInstantiateCallback_arg6,
2269          [Define to the type of the 6th arg of XRegisterIMInstantiateCallback,
2270 either XPointer or XPointer*.])dnl
2271   if test "$emacs_cv_arg6_star" = yes; then
2272     AC_DEFINE(XRegisterIMInstantiateCallback_arg6, [XPointer*])
2273   else
2274     AC_DEFINE(XRegisterIMInstantiateCallback_arg6, [XPointer])
2275   fi
2276   CFLAGS=$late_CFLAGS
2277 fi
2278
2279 ### Start of font-backend (under any platform) section.
2280 # (nothing here yet -- this is a placeholder)
2281 ### End of font-backend (under any platform) section.
2282
2283 ### Start of font-backend (under X11) section.
2284 if test "${HAVE_X11}" = "yes"; then
2285    PKG_CHECK_MODULES(FONTCONFIG, fontconfig >= 2.2.0, HAVE_FC=yes, HAVE_FC=no)
2286
2287    ## Use -lXft if available, unless `--with-xft=no'.
2288    HAVE_XFT=maybe
2289     if test "${HAVE_FC}" = "no" || test "x${with_x}" = "xno"; then
2290       with_xft="no";
2291     fi
2292     if test "x${with_xft}" != "xno"; then
2293
2294       PKG_CHECK_MODULES(XFT, xft >= 0.13.0, , HAVE_XFT=no)
2295       ## Because xftfont.c uses XRenderQueryExtension, we also
2296       ## need to link to -lXrender.
2297       HAVE_XRENDER=no
2298       AC_CHECK_LIB(Xrender, XRenderQueryExtension, HAVE_XRENDER=yes)
2299       if test "$HAVE_XFT" != no && test "$HAVE_XRENDER" != no; then
2300         OLD_CPPFLAGS="$CPPFLAGS"
2301         OLD_CFLAGS="$CFLAGS"
2302         OLD_LIBS="$LIBS"
2303         CPPFLAGS="$CPPFLAGS $XFT_CFLAGS"
2304         CFLAGS="$CFLAGS $XFT_CFLAGS"
2305         XFT_LIBS="-lXrender $XFT_LIBS"
2306         LIBS="$XFT_LIBS $LIBS"
2307         AC_CHECK_HEADER(X11/Xft/Xft.h,
2308           AC_CHECK_LIB(Xft, XftFontOpen, HAVE_XFT=yes, , $XFT_LIBS))
2309
2310         if test "${HAVE_XFT}" = "yes"; then
2311           AC_DEFINE(HAVE_XFT, 1, [Define to 1 if you have the Xft library.])
2312             AC_SUBST(XFT_LIBS)
2313           C_SWITCH_X_SITE="$C_SWITCH_X_SITE $XFT_CFLAGS"
2314         else
2315           CPPFLAGS="$OLD_CPPFLAGS"
2316           CFLAGS="$OLD_CFLAGS"
2317           LIBS="$OLD_LIBS"
2318         fi                        # "${HAVE_XFT}" = "yes"
2319       fi                          # "$HAVE_XFT" != no
2320     fi                            # "x${with_xft}" != "xno"
2321
2322     ## We used to allow building with FreeType and without Xft.
2323     ## However, the ftx font backend driver is not in good shape.
2324     if test "$HAVE_XFT" != "yes"; then
2325        dnl For the "Does Emacs use" message at the end.
2326        HAVE_XFT=no
2327        HAVE_FREETYPE=no
2328     else
2329        dnl Strict linkers fail with
2330        dnl ftfont.o: undefined reference to symbol 'FT_New_Face'
2331        dnl if -lfreetype is not specified.
2332        dnl The following is needed to set FREETYPE_LIBS.
2333        PKG_CHECK_MODULES(FREETYPE, freetype2, HAVE_FREETYPE=yes,
2334                          HAVE_FREETYPE=no)
2335
2336        test "$HAVE_FREETYPE" = "no" && AC_MSG_ERROR(libxft requires libfreetype)
2337     fi
2338
2339     HAVE_LIBOTF=no
2340     if test "${HAVE_FREETYPE}" = "yes"; then
2341       AC_DEFINE(HAVE_FREETYPE, 1,
2342                 [Define to 1 if using the freetype and fontconfig libraries.])
2343       if test "${with_libotf}" != "no"; then
2344         PKG_CHECK_MODULES(LIBOTF, libotf, HAVE_LIBOTF=yes,
2345                           HAVE_LIBOTF=no)
2346         if test "$HAVE_LIBOTF" = "yes"; then
2347           AC_DEFINE(HAVE_LIBOTF, 1, [Define to 1 if using libotf.])
2348           AC_CHECK_LIB(otf, OTF_get_variation_glyphs,
2349                        HAVE_OTF_GET_VARIATION_GLYPHS=yes,
2350                        HAVE_OTF_GET_VARIATION_GLYPHS=no)
2351           if test "${HAVE_OTF_GET_VARIATION_GLYPHS}" = "yes"; then
2352             AC_DEFINE(HAVE_OTF_GET_VARIATION_GLYPHS, 1,
2353                       [Define to 1 if libotf has OTF_get_variation_glyphs.])
2354           fi
2355         fi
2356       fi
2357     dnl FIXME should there be an error if HAVE_FREETYPE != yes?
2358     dnl Does the new font backend require it, or can it work without it?
2359     fi
2360
2361     HAVE_M17N_FLT=no
2362     if test "${HAVE_LIBOTF}" = yes; then
2363       if test "${with_m17n_flt}" != "no"; then
2364         PKG_CHECK_MODULES(M17N_FLT, m17n-flt, HAVE_M17N_FLT=yes, HAVE_M17N_FLT=no)
2365         if test "$HAVE_M17N_FLT" = "yes"; then
2366           AC_DEFINE(HAVE_M17N_FLT, 1, [Define to 1 if using libm17n-flt.])
2367         fi
2368       fi
2369     fi
2370 else
2371     HAVE_XFT=no
2372     HAVE_FREETYPE=no
2373     HAVE_LIBOTF=no
2374     HAVE_M17N_FLT=no
2375 fi
2376
2377 ### End of font-backend (under X11) section.
2378
2379 AC_SUBST(FREETYPE_CFLAGS)
2380 AC_SUBST(FREETYPE_LIBS)
2381 AC_SUBST(FONTCONFIG_CFLAGS)
2382 AC_SUBST(FONTCONFIG_LIBS)
2383 AC_SUBST(LIBOTF_CFLAGS)
2384 AC_SUBST(LIBOTF_LIBS)
2385 AC_SUBST(M17N_FLT_CFLAGS)
2386 AC_SUBST(M17N_FLT_LIBS)
2387
2388 ### Use -lXpm if available, unless `--with-xpm=no'.
2389 HAVE_XPM=no
2390 LIBXPM=
2391 if test "${HAVE_X11}" = "yes"; then
2392   if test "${with_xpm}" != "no"; then
2393     AC_CHECK_HEADER(X11/xpm.h,
2394       [AC_CHECK_LIB(Xpm, XpmReadFileToPixmap, HAVE_XPM=yes, , -lX11)])
2395     if test "${HAVE_XPM}" = "yes"; then
2396       AC_MSG_CHECKING(for XpmReturnAllocPixels preprocessor define)
2397       AC_EGREP_CPP(no_return_alloc_pixels,
2398       [#include "X11/xpm.h"
2399 #ifndef XpmReturnAllocPixels
2400 no_return_alloc_pixels
2401 #endif
2402       ], HAVE_XPM=no, HAVE_XPM=yes)
2403
2404       if test "${HAVE_XPM}" = "yes"; then
2405         AC_MSG_RESULT(yes)
2406       else
2407         AC_MSG_RESULT(no)
2408       fi
2409     fi
2410   fi
2411
2412   if test "${HAVE_XPM}" = "yes"; then
2413     AC_DEFINE(HAVE_XPM, 1, [Define to 1 if you have the Xpm library (-lXpm).])
2414     LIBXPM=-lXpm
2415   fi
2416 fi
2417 AC_SUBST(LIBXPM)
2418
2419 ### Use -ljpeg if available, unless `--with-jpeg=no'.
2420 HAVE_JPEG=no
2421 LIBJPEG=
2422 if test "${HAVE_X11}" = "yes"; then
2423   if test "${with_jpeg}" != "no"; then
2424     dnl Checking for jpeglib.h can lose because of a redefinition of
2425     dnl  HAVE_STDLIB_H.
2426     AC_CHECK_HEADER(jerror.h,
2427       [AC_CHECK_LIB(jpeg, jpeg_destroy_compress, HAVE_JPEG=yes)])
2428   fi
2429
2430   AH_TEMPLATE(HAVE_JPEG, [Define to 1 if you have the jpeg library (-ljpeg).])dnl
2431   if test "${HAVE_JPEG}" = "yes"; then
2432     AC_DEFINE(HAVE_JPEG)
2433     AC_EGREP_CPP([version= *(6[2-9]|[7-9][0-9])],
2434         [#include <jpeglib.h>
2435          version=JPEG_LIB_VERSION
2436 ],
2437         [AC_DEFINE(HAVE_JPEG)],
2438         [AC_MSG_WARN([libjpeg found, but not version 6b or later])
2439         HAVE_JPEG=no])
2440   fi
2441   if test "${HAVE_JPEG}" = "yes"; then
2442     LIBJPEG=-ljpeg
2443   fi
2444 fi
2445 AC_SUBST(LIBJPEG)
2446
2447 ### Use -lpng if available, unless `--with-png=no'.
2448 HAVE_PNG=no
2449 LIBPNG=
2450 if test "${HAVE_X11}" = "yes"; then
2451   if test "${with_png}" != "no"; then
2452     # Debian unstable as of July 2003 has multiple libpngs, and puts png.h
2453     # in /usr/include/libpng.
2454     AC_CHECK_HEADERS(png.h libpng/png.h, break)
2455     if test "$ac_cv_header_png_h" = yes || test "$ac_cv_header_libpng_png_h" = yes ; then
2456       AC_CHECK_LIB(png, png_get_channels, HAVE_PNG=yes, , -lz -lm)
2457     fi
2458   fi
2459
2460   if test "${HAVE_PNG}" = "yes"; then
2461     AC_DEFINE(HAVE_PNG, 1, [Define to 1 if you have the png library (-lpng).])
2462     LIBPNG="-lpng -lz -lm"
2463
2464     AC_CHECK_DECL(png_longjmp,
2465       [],
2466       [AC_DEFINE(PNG_DEPSTRUCT, [],
2467          [Define to empty to suppress deprecation warnings when building
2468           with --enable-gcc-warnings and with libpng versions before 1.5,
2469           which lack png_longjmp.])],
2470       [[#ifdef HAVE_LIBPNG_PNG_H
2471         # include <libpng/png.h>
2472         #else
2473         # include <png.h>
2474         #endif
2475       ]])
2476   fi
2477 fi
2478 AC_SUBST(LIBPNG)
2479
2480 ### Use -ltiff if available, unless `--with-tiff=no'.
2481 HAVE_TIFF=no
2482 LIBTIFF=
2483 if test "${HAVE_X11}" = "yes"; then
2484   if test "${with_tiff}" != "no"; then
2485     AC_CHECK_HEADER(tiffio.h,
2486       [tifflibs="-lz -lm"
2487       # At least one tiff package requires the jpeg library.
2488       if test "${HAVE_JPEG}" = yes; then tifflibs="-ljpeg $tifflibs"; fi
2489       AC_CHECK_LIB(tiff, TIFFGetVersion, HAVE_TIFF=yes, , $tifflibs)])
2490   fi
2491
2492   if test "${HAVE_TIFF}" = "yes"; then
2493     AC_DEFINE(HAVE_TIFF, 1, [Define to 1 if you have the tiff library (-ltiff).])
2494     dnl FIXME -lz -lm, as per libpng?
2495     LIBTIFF=-ltiff
2496   fi
2497 fi
2498 AC_SUBST(LIBTIFF)
2499
2500 ### Use -lgif or -lungif if available, unless `--with-gif=no'.
2501 HAVE_GIF=no
2502 LIBGIF=
2503 if test "${HAVE_X11}" = "yes" && test "${with_gif}" != "no"; then
2504   AC_CHECK_HEADER(gif_lib.h,
2505 # EGifPutExtensionLast only exists from version libungif-4.1.0b1.
2506 # Earlier versions can crash Emacs.
2507     [AC_CHECK_LIB(gif, EGifPutExtensionLast, HAVE_GIF=yes, HAVE_GIF=maybe)])
2508
2509   if test "$HAVE_GIF" = yes; then
2510     LIBGIF=-lgif
2511   elif test "$HAVE_GIF" = maybe; then
2512 # If gif_lib.h but no libgif, try libungif.
2513     AC_CHECK_LIB(ungif, EGifPutExtensionLast, HAVE_GIF=yes, HAVE_GIF=no)
2514     test "$HAVE_GIF" = yes && LIBGIF=-lungif
2515   fi
2516
2517   if test "${HAVE_GIF}" = "yes"; then
2518     AC_DEFINE(HAVE_GIF, 1, [Define to 1 if you have a gif (or ungif) library.])
2519   fi
2520 fi
2521 AC_SUBST(LIBGIF)
2522
2523 dnl Check for required libraries.
2524 if test "${HAVE_X11}" = "yes"; then
2525   MISSING=""
2526   WITH_NO=""
2527   test "${with_xpm}" != "no" && test "${HAVE_XPM}" != "yes" &&
2528     MISSING="libXpm" && WITH_NO="--with-xpm=no"
2529   test "${with_jpeg}" != "no" && test "${HAVE_JPEG}" != "yes" &&
2530     MISSING="$MISSING libjpeg" && WITH_NO="$WITH_NO --with-jpeg=no"
2531   test "${with_png}" != "no" && test "${HAVE_PNG}" != "yes" &&
2532     MISSING="$MISSING libpng" && WITH_NO="$WITH_NO --with-png=no"
2533   test "${with_gif}" != "no" && test "${HAVE_GIF}" != "yes" &&
2534     MISSING="$MISSING libgif/libungif" && WITH_NO="$WITH_NO --with-gif=no"
2535   test "${with_tiff}" != "no" && test "${HAVE_TIFF}" != "yes" &&
2536     MISSING="$MISSING libtiff" && WITH_NO="$WITH_NO --with-tiff=no"
2537
2538   if test "X${MISSING}" != X; then
2539     AC_MSG_ERROR([The following required libraries were not found:
2540     $MISSING
2541 Maybe some development libraries/packages are missing?
2542 If you don't want to link with them give
2543     $WITH_NO
2544 as options to configure])
2545   fi
2546 fi
2547
2548 ### Use -lgpm if available, unless `--with-gpm=no'.
2549 HAVE_GPM=no
2550 LIBGPM=
2551 if test "${with_gpm}" != "no"; then
2552   AC_CHECK_HEADER(gpm.h,
2553     [AC_CHECK_LIB(gpm, Gpm_Open, HAVE_GPM=yes)])
2554
2555   if test "${HAVE_GPM}" = "yes"; then
2556     AC_DEFINE(HAVE_GPM, 1, [Define to 1 if you have the gpm library (-lgpm).])
2557     LIBGPM=-lgpm
2558   fi
2559 fi
2560 AC_SUBST(LIBGPM)
2561
2562 dnl Check for malloc/malloc.h on darwin
2563 AC_CHECK_HEADERS_ONCE(malloc/malloc.h)
2564
2565 GNUSTEP_CFLAGS=
2566 ### Use NeXTstep API to implement GUI.
2567 if test "${HAVE_NS}" = "yes"; then
2568   AC_DEFINE(HAVE_NS, 1, [Define to 1 if you are using the NeXTstep API, either GNUstep or Cocoa on Mac OS X.])
2569   if test "${NS_IMPL_COCOA}" = "yes"; then
2570     AC_DEFINE(NS_IMPL_COCOA, 1, [Define to 1 if you are using NS windowing under MacOS X.])
2571   fi
2572   if test "${NS_IMPL_GNUSTEP}" = "yes"; then
2573     AC_DEFINE(NS_IMPL_GNUSTEP, 1, [Define to 1 if you are using NS windowing under GNUstep.])
2574     # See also .m.o rule in Makefile.in */
2575     # FIXME: are all these flags really needed?  Document here why.  */
2576     GNUSTEP_CFLAGS="-D_REENTRANT -fPIC -fno-strict-aliasing -I${GNUSTEP_SYSTEM_HEADERS} ${GNUSTEP_LOCAL_HEADERS}"
2577     ## Extra CFLAGS applied to src/*.m files.
2578     GNU_OBJC_CFLAGS="$GNU_OBJC_CFLAGS -fgnu-runtime -Wno-import -fconstant-string-class=NSConstantString -DGNUSTEP_BASE_LIBRARY=1 -DGNU_GUI_LIBRARY=1 -DGNU_RUNTIME=1 -DGSWARN -DGSDIAGNOSE"
2579   fi
2580   # We also have mouse menus.
2581   HAVE_MENUS=yes
2582   OTHER_FILES=ns-app
2583 fi
2584
2585
2586 ### Use session management (-lSM -lICE) if available
2587 HAVE_X_SM=no
2588 LIBXSM=
2589 if test "${HAVE_X11}" = "yes"; then
2590   AC_CHECK_HEADER(X11/SM/SMlib.h,
2591     [AC_CHECK_LIB(SM, SmcOpenConnection, HAVE_X_SM=yes, , -lICE)])
2592
2593   if test "${HAVE_X_SM}" = "yes"; then
2594     AC_DEFINE(HAVE_X_SM, 1, [Define to 1 if you have the SM library (-lSM).])
2595     LIBXSM="-lSM -lICE"
2596     case "$LIBS" in
2597       *-lSM*) ;;
2598       *)      LIBS="$LIBXSM $LIBS" ;;
2599     esac
2600   fi
2601 fi
2602 AC_SUBST(LIBXSM)
2603
2604 ### Use libxml (-lxml2) if available
2605 HAVE_LIBXML2=no
2606 if test "${with_xml2}" != "no"; then
2607   ### I'm not sure what the version number should be, so I just guessed.
2608   PKG_CHECK_MODULES(LIBXML2, libxml-2.0 > 2.6.17, HAVE_LIBXML2=yes, HAVE_LIBXML2=no)
2609   if test "${HAVE_LIBXML2}" = "yes"; then
2610     LIBS="$LIBXML2_LIBS $LIBS"
2611     AC_CHECK_LIB(xml2, htmlReadMemory, HAVE_LIBXML2=yes, HAVE_LIBXML2=no)
2612     if test "${HAVE_LIBXML2}" = "yes"; then
2613       AC_DEFINE(HAVE_LIBXML2, 1, [Define to 1 if you have the libxml library (-lxml2).])
2614     else
2615       LIBXML2_LIBS=""
2616       LIBXML2_CFLAGS=""
2617     fi
2618   fi
2619 fi
2620 AC_SUBST(LIBXML2_LIBS)
2621 AC_SUBST(LIBXML2_CFLAGS)
2622
2623 # If netdb.h doesn't declare h_errno, we must declare it by hand.
2624 AC_CACHE_CHECK(whether netdb declares h_errno,
2625                emacs_cv_netdb_declares_h_errno,
2626 [AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <netdb.h>]],
2627   [[return h_errno;]])],
2628   emacs_cv_netdb_declares_h_errno=yes, emacs_cv_netdb_declares_h_errno=no)])
2629 if test $emacs_cv_netdb_declares_h_errno = yes; then
2630   AC_DEFINE(HAVE_H_ERRNO, 1, [Define to 1 if netdb.h declares h_errno.])
2631 fi
2632
2633 # fmod, logb, and frexp are found in -lm on most systems.
2634 # On HPUX 9.01, -lm does not contain logb, so check for sqrt.
2635 AC_CHECK_LIB(m, sqrt)
2636
2637 # Check for mail-locking functions in a "mail" library.  Probably this should
2638 # have the same check as for liblockfile below.
2639 AC_CHECK_LIB(mail, maillock, have_mail=yes, have_mail=no)
2640 if test $have_mail = yes; then
2641   LIBS_MAIL=-lmail
2642   LIBS="$LIBS_MAIL $LIBS"
2643   AC_DEFINE(HAVE_LIBMAIL, 1, [Define to 1 if you have the `mail' library (-lmail).])
2644 else
2645   LIBS_MAIL=
2646 fi
2647 dnl Debian, at least:
2648 AC_CHECK_LIB(lockfile, maillock, have_lockfile=yes, have_lockfile=no)
2649 if test $have_lockfile = yes; then
2650    LIBS_MAIL=-llockfile
2651    LIBS="$LIBS_MAIL $LIBS"
2652    AC_DEFINE(HAVE_LIBLOCKFILE, 1, [Define to 1 if you have the `lockfile' library (-llockfile).])
2653 else
2654 # If we have the shared liblockfile, assume we must use it for mail
2655 # locking (e.g. Debian).  If we couldn't link against liblockfile
2656 # (no liblockfile.a installed), ensure that we don't need to.
2657   dnl This works for files generally, not just executables.
2658   dnl Should we look elsewhere for it?  Maybe examine /etc/ld.so.conf?
2659   AC_CHECK_PROG(liblockfile, liblockfile.so, yes, no,
2660                 /usr/lib:/lib:/usr/local/lib:$LD_LIBRARY_PATH)
2661   if test $ac_cv_prog_liblockfile = yes; then
2662     AC_MSG_ERROR([Shared liblockfile found but can't link against it.
2663 This probably means that movemail could lose mail.
2664 There may be a `development' package to install containing liblockfile.])
2665   fi
2666 fi
2667 AC_CHECK_HEADERS_ONCE(maillock.h)
2668 AC_SUBST(LIBS_MAIL)
2669
2670 ## Define MAIL_USE_FLOCK (or LOCKF) if the mailer uses flock (or lockf) to
2671 ## interlock access to the mail spool.  The alternative is a lock file named
2672 ## /usr/spool/mail/$USER.lock.
2673 mail_lock=no
2674 case "$opsys" in
2675   aix4-2) mail_lock="lockf" ;;
2676
2677   gnu|freebsd|netbsd|openbsd|darwin|irix6-5) mail_lock="flock" ;;
2678
2679   ## On GNU/Linux systems, both methods are used by various mail programs.
2680   ## I assume most people are using newer mailers that have heard of flock.
2681   ## Change this if you need to.
2682   ## Debian contains a patch which says: ``On Debian/GNU/Linux systems,
2683   ## configure gets the right answers, and that means *NOT* using flock.
2684   ## Using flock is guaranteed to be the wrong thing. See Debian Policy
2685   ## for details.'' and then uses `#ifdef DEBIAN'.  Unfortunately the
2686   ## Debian maintainer hasn't provided a clean fix for Emacs.
2687   ## movemail.c will use `maillock' when MAILDIR, HAVE_LIBMAIL and
2688   ## HAVE_MAILLOCK_H are defined, so the following appears to be the
2689   ## correct logic.  -- fx
2690   ## We must check for HAVE_LIBLOCKFILE too, as movemail does.
2691   ## liblockfile is a Free Software replacement for libmail, used on
2692   ## Debian systems and elsewhere. -rfr.
2693   gnu-*)
2694     mail_lock="flock"
2695     if test $have_mail = yes || test $have_lockfile = yes; then
2696       test $ac_cv_header_maillock_h = yes && mail_lock=no
2697     fi
2698     ;;
2699 esac
2700
2701 BLESSMAIL_TARGET=
2702 case "$mail_lock" in
2703   flock) AC_DEFINE(MAIL_USE_FLOCK, 1, [Define if the mailer uses flock to interlock the mail spool.]) ;;
2704
2705   lockf) AC_DEFINE(MAIL_USE_LOCKF, 1, [Define if the mailer uses lockf to interlock the mail spool.]) ;;
2706
2707   *) BLESSMAIL_TARGET="need-blessmail" ;;
2708 esac
2709 AC_SUBST(BLESSMAIL_TARGET)
2710
2711
2712 AC_CHECK_FUNCS(gethostname \
2713 closedir getrusage get_current_dir_name \
2714 lrand48 logb frexp fmod cbrt setsid \
2715 fpathconf select euidaccess getpagesize setlocale \
2716 utimes getrlimit setrlimit setpgid getcwd shutdown getaddrinfo \
2717 __fpending strsignal setitimer \
2718 sendto recvfrom getsockname getpeername getifaddrs freeifaddrs \
2719 gai_strerror mkstemp getline getdelim fsync sync \
2720 difftime posix_memalign \
2721 getpwent endpwent getgrent endgrent \
2722 touchlock \
2723 cfmakeraw cfsetspeed copysign __executable_start)
2724
2725 dnl FIXME Fragile: something else may test for getwd as a dependency.
2726 dnl Change to defining BROKEN_xxx ?
2727 dnl getwd appears to be buggy on SVR4.2, so we don't use it.
2728 if test $opsys != unixware; then
2729   AC_CHECK_FUNCS(getwd)
2730 fi
2731
2732 dnl FIXME Fragile: see above.
2733 ## Eric Backus <ericb@lsid.hp.com> says, HP-UX 9.x on HP 700 machines
2734 ## has a broken `rint' in some library versions including math library
2735 ## version number A.09.05.
2736 ## You can fix the math library by installing patch number PHSS_4630.
2737 ## But we can fix it more reliably for Emacs by just not using rint.
2738 ## We also skip HAVE_RANDOM - see comments in src/s/hpux10-20.h.
2739 case $opsys in
2740    hpux*) : ;;
2741    *) AC_CHECK_FUNCS(random rint) ;;
2742 esac
2743
2744 dnl Cannot use AC_CHECK_FUNCS
2745 AC_CACHE_CHECK([for __builtin_unwind_init],
2746                emacs_cv_func___builtin_unwind_init,
2747 [AC_LINK_IFELSE([AC_LANG_PROGRAM([], [__builtin_unwind_init ();])],
2748                 emacs_cv_func___builtin_unwind_init=yes,
2749                 emacs_cv_func___builtin_unwind_init=no)])
2750 if test $emacs_cv_func___builtin_unwind_init = yes; then
2751   AC_DEFINE(HAVE___BUILTIN_UNWIND_INIT, 1,
2752             [Define to 1 if you have the `__builtin_unwind_init' function.])
2753 fi
2754
2755 AC_CHECK_HEADERS_ONCE(sys/un.h)
2756
2757 AC_FUNC_FSEEKO
2758
2759 AC_FUNC_GETPGRP
2760
2761 # UNIX98 PTYs.
2762 AC_CHECK_FUNCS(grantpt)
2763
2764 # PTY-related GNU extensions.
2765 AC_CHECK_FUNCS(getpt)
2766
2767 # Check this now, so that we will NOT find the above functions in ncurses.
2768 # That is because we have not set up to link ncurses in lib-src.
2769 # It's better to believe a function is not available
2770 # than to expect to find it in ncurses.
2771 # Also we need tputs and friends to be able to build at all.
2772 AC_MSG_CHECKING([for library containing tputs])
2773 # Run a test program that contains a call to tputs, a call that is
2774 # never executed.  This tests whether a pre-'main' dynamic linker
2775 # works with the library.  It's too much trouble to actually call
2776 # tputs in the test program, due to portability hassles.  When
2777 # cross-compiling, assume the test program will run if it links.
2778 AC_DEFUN([tputs_link_source], [
2779   AC_LANG_SOURCE(
2780      [[extern void tputs (const char *, int, int (*)(int));
2781        int main (int argc, char **argv)
2782        {
2783           if (argc == 10000)
2784             tputs (argv[0], 0, 0);
2785           return 0;
2786        }]])
2787 ])
2788 # Maybe curses should be tried earlier?
2789 # See http://debbugs.gnu.org/cgi/bugreport.cgi?bug=9736#35
2790 for tputs_library in '' tinfo ncurses terminfo termcap curses; do
2791   OLIBS=$LIBS
2792   if test -z "$tputs_library"; then
2793     LIBS_TERMCAP=
2794     msg='none required'
2795   else
2796     LIBS_TERMCAP=-l$tputs_library
2797     msg=$LIBS_TERMCAP
2798     LIBS="$LIBS_TERMCAP $LIBS"
2799   fi
2800   AC_RUN_IFELSE([tputs_link_source], [], [msg=no],
2801     [AC_LINK_IFELSE([tputs_link_source], [], [msg=no])])
2802   LIBS=$OLIBS
2803   if test "X$msg" != Xno; then
2804     break
2805   fi
2806 done
2807 AC_MSG_RESULT([$msg])
2808 if test "X$msg" = Xno; then
2809   AC_MSG_ERROR([The required function `tputs' was not found in any library.
2810 The following libraries were tried (in order):
2811   libtinfo, libncurses, libterminfo, libtermcap, libcurses
2812 Please try installing whichever of these libraries is most appropriate
2813 for your system, together with its header files.
2814 For example, a libncurses-dev(el) or similar package.])
2815 fi
2816
2817 ## Use termcap instead of terminfo?
2818 ## Only true for: freebsd < 40000, ms-w32, msdos, netbsd < 599002500.
2819 TERMINFO=yes
2820 ## FIXME?  In the cases below where we unconditionally set
2821 ## LIBS_TERMCAP="-lncurses", this overrides LIBS_TERMCAP = -ltinfo,
2822 ## if that was found above to have tputs.
2823 ## Should we use the gnu* logic everywhere?
2824 case "$opsys" in
2825   ## darwin: Prevents crashes when running Emacs in Terminal.app under 10.2.
2826   ##  The ncurses library has been moved out of the System framework in
2827   ##  Mac OS X 10.2.  So if configure detects it, set the command-line
2828   ##  option to use it.
2829   darwin) LIBS_TERMCAP="-lncurses" ;;
2830
2831   gnu*) test -z "$LIBS_TERMCAP" && LIBS_TERMCAP="-lncurses" ;;
2832
2833   freebsd)
2834     AC_MSG_CHECKING([whether FreeBSD is new enough to use terminfo])
2835     AC_CACHE_VAL(emacs_cv_freebsd_terminfo,
2836     [AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <osreldate.h>]],
2837 [[#if __FreeBSD_version < 400000
2838 fail;
2839 #endif
2840 ]])], emacs_cv_freebsd_terminfo=yes, emacs_cv_freebsd_terminfo=no)])
2841
2842     AC_MSG_RESULT($emacs_cv_freebsd_terminfo)
2843
2844     if test $emacs_cv_freebsd_terminfo = yes; then
2845       LIBS_TERMCAP="-lncurses"
2846     else
2847       TERMINFO=no
2848       LIBS_TERMCAP="-ltermcap"
2849     fi
2850     ;;
2851
2852   netbsd)
2853     if test "x$LIBS_TERMCAP" != "x-lterminfo"; then
2854       TERMINFO=no
2855       LIBS_TERMCAP="-ltermcap"
2856     fi
2857     ;;
2858
2859   openbsd) LIBS_TERMCAP="-lncurses" ;;
2860
2861   ## hpux: Make sure we get select from libc rather than from libcurses
2862   ##  because libcurses on HPUX 10.10 has a broken version of select.
2863   ##  We used to use -lc -lcurses, but this may be cleaner.
2864   ## FIXME?  But TERMINFO = yes on hpux (it used to be explicitly
2865   # set that way, now it uses the default).  Isn't this a contradiction?
2866   hpux*) LIBS_TERMCAP="-ltermcap" ;;
2867
2868 esac
2869
2870 TERMCAP_OBJ=tparam.o
2871 if test $TERMINFO = yes; then
2872   AC_DEFINE(TERMINFO, 1, [Define to 1 if you use terminfo instead of termcap.])
2873   TERMCAP_OBJ=terminfo.o
2874 fi
2875 AC_SUBST(LIBS_TERMCAP)
2876 AC_SUBST(TERMCAP_OBJ)
2877
2878
2879 # Do we have res_init, for detecting changes in /etc/resolv.conf?
2880 # On Darwin, res_init appears not to be useful: see bug#562 and
2881 # http://lists.gnu.org/archive/html/emacs-devel/2007-11/msg01467.html
2882 resolv=no
2883
2884 if test $opsys != darwin; then
2885
2886   AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <netinet/in.h>
2887 #include <arpa/nameser.h>
2888 #include <resolv.h>]],
2889     [[return res_init();]])],
2890     have_res_init=yes, have_res_init=no)
2891   if test "$have_res_init" = no; then
2892     OLIBS="$LIBS"
2893     LIBS="$LIBS -lresolv"
2894     AC_MSG_CHECKING(for res_init with -lresolv)
2895     AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <netinet/in.h>
2896 #include <arpa/nameser.h>
2897 #include <resolv.h>]],
2898       [[return res_init();]])],
2899       have_res_init=yes, have_res_init=no)
2900     AC_MSG_RESULT($have_res_init)
2901     if test "$have_res_init" = yes ; then
2902       resolv=yes
2903     fi
2904     LIBS="$OLIBS"
2905   fi
2906
2907   if test "$have_res_init" = yes; then
2908     AC_DEFINE(HAVE_RES_INIT, 1, [Define to 1 if res_init is available.])
2909   fi
2910 fi                              dnl !darwin
2911
2912 # Do we need the Hesiod library to provide the support routines?
2913 dnl FIXME?  Should we be skipping this on Darwin too?
2914 LIBHESIOD=
2915 if test "$with_hesiod" != no ; then
2916   # Don't set $LIBS here -- see comments above.  FIXME which comments?
2917   AC_CHECK_FUNC(res_send, , [AC_CHECK_FUNC(__res_send, ,
2918      [AC_CHECK_LIB(resolv, res_send, resolv=yes,
2919                   [AC_CHECK_LIB(resolv, __res_send, resolv=yes)])])])
2920   if test "$resolv" = yes ; then
2921     RESOLVLIB=-lresolv
2922   else
2923     RESOLVLIB=
2924   fi
2925   AC_CHECK_FUNC(hes_getmailhost, , [AC_CHECK_LIB(hesiod, hes_getmailhost,
2926         hesiod=yes, :, $RESOLVLIB)])
2927
2928   if test x"$hesiod" = xyes; then
2929     AC_DEFINE(HAVE_LIBHESIOD, 1,
2930               [Define to 1 if you have the hesiod library (-lhesiod).])
2931     LIBHESIOD=-lhesiod
2932   fi
2933 fi
2934 AC_SUBST(LIBHESIOD)
2935
2936 # Do we need libresolv (due to res_init or Hesiod)?
2937 if test "$resolv" = yes && test $opsys != darwin; then
2938   AC_DEFINE(HAVE_LIBRESOLV, 1,
2939             [Define to 1 if you have the resolv library (-lresolv).])
2940   LIBRESOLV=-lresolv
2941 else
2942   LIBRESOLV=
2943 fi
2944 AC_SUBST(LIBRESOLV)
2945
2946 # These tell us which Kerberos-related libraries to use.
2947 COM_ERRLIB=
2948 CRYPTOLIB=
2949 KRB5LIB=
2950 DESLIB=
2951 KRB4LIB=
2952
2953 if test "${with_kerberos}" != no; then
2954   AC_CHECK_LIB(com_err, com_err, have_com_err=yes, have_com_err=no)
2955   if test $have_com_err = yes; then
2956     COM_ERRLIB=-lcom_err
2957     LIBS="$COM_ERRLIB $LIBS"
2958     AC_DEFINE(HAVE_LIBCOM_ERR, 1, [Define to 1 if you have the `com_err' library (-lcom_err).])
2959   fi
2960   AC_CHECK_LIB(crypto, mit_des_cbc_encrypt, have_crypto=yes, have_crypto=no)
2961   if test $have_crypto = yes; then
2962     CRYPTOLIB=-lcrypto
2963     LIBS="$CRYPTOLIB $LIBS"
2964     AC_DEFINE(HAVE_LIBCRYPTO, 1, [Define to 1 if you have the `crypto' library (-lcrypto).])
2965   fi
2966   AC_CHECK_LIB(k5crypto, mit_des_cbc_encrypt, have_k5crypto=yes, have_k5crypto=no)
2967   if test $have_k5crypto = yes; then
2968     CRYPTOLIB=-lk5crypto
2969     LIBS="$CRYPTOLIB $LIBS"
2970     AC_DEFINE(HAVE_LIBK5CRYPTO, 1, [Define to 1 if you have the `k5crypto' library (-lk5crypto).])
2971   fi
2972   AC_CHECK_LIB(krb5, krb5_init_context, have_krb5=yes, have_krb5=no)
2973   if test $have_krb5=yes; then
2974     KRB5LIB=-lkrb5
2975     LIBS="$KRB5LIB $LIBS"
2976     AC_DEFINE(HAVE_LIBKRB5, 1, [Define to 1 if you have the `krb5' library (-lkrb5).])
2977   fi
2978   dnl FIXME Simplify.  Does not match 22 logic, thanks to default_off?
2979   if test "${with_kerberos5}" = no; then
2980     AC_CHECK_LIB(des425, des_cbc_encrypt, have_des425=yes, have_des425=no )
2981     if test $have_des425 = yes; then
2982       DESLIB=-ldes425
2983       LIBS="$DESLIB $LIBS"
2984       AC_DEFINE(HAVE_LIBDES425, 1, [Define to 1 if you have the `des425' library (-ldes425).])
2985     else
2986       AC_CHECK_LIB(des, des_cbc_encrypt, have_des=yes, have_des=no)
2987       if test $have_des = yes; then
2988         DESLIB=-ldes
2989         LIBS="$DESLIB $LIBS"
2990         AC_DEFINE(HAVE_LIBDES, 1, [Define to 1 if you have the `des' library (-ldes).])
2991       fi
2992     fi
2993     AC_CHECK_LIB(krb4, krb_get_cred, have_krb4=yes, have_krb4=no)
2994     if test $have_krb4 = yes; then
2995       KRB4LIB=-lkrb4
2996       LIBS="$KRB4LIB $LIBS"
2997       AC_DEFINE(HAVE_LIBKRB4, 1, [Define to 1 if you have the `krb4' library (-lkrb4).])
2998     else
2999       AC_CHECK_LIB(krb, krb_get_cred, have_krb=yes, have_krb=no)
3000       if test $have_krb = yes; then
3001         KRB4LIB=-lkrb
3002         LIBS="$KRB4LIB $LIBS"
3003         AC_DEFINE(HAVE_LIBKRB, 1, [Define to 1 if you have the `krb' library (-lkrb).])
3004       fi
3005     fi
3006   fi
3007
3008   if test "${with_kerberos5}" != no; then
3009     AC_CHECK_HEADERS(krb5.h,
3010       [AC_CHECK_MEMBERS([krb5_error.text, krb5_error.e_text],,,
3011                         [#include <krb5.h>])])
3012   else
3013     AC_CHECK_HEADERS(des.h,,
3014                      [AC_CHECK_HEADERS(kerberosIV/des.h,,
3015                                        [AC_CHECK_HEADERS(kerberos/des.h)])])
3016     AC_CHECK_HEADERS(krb.h,,
3017                      [AC_CHECK_HEADERS(kerberosIV/krb.h,,
3018                                        [AC_CHECK_HEADERS(kerberos/krb.h)])])
3019   fi
3020   AC_CHECK_HEADERS(com_err.h)
3021 fi
3022
3023 AC_SUBST(COM_ERRLIB)
3024 AC_SUBST(CRYPTOLIB)
3025 AC_SUBST(KRB5LIB)
3026 AC_SUBST(DESLIB)
3027 AC_SUBST(KRB4LIB)
3028
3029 AC_CHECK_FUNCS_ONCE(tzset)
3030 AC_MSG_CHECKING(whether localtime caches TZ)
3031 AC_CACHE_VAL(emacs_cv_localtime_cache,
3032 [if test x$ac_cv_func_tzset = xyes; then
3033 AC_RUN_IFELSE([AC_LANG_SOURCE([[#include <time.h>
3034 char TZ_GMT0[] = "TZ=GMT0";
3035 char TZ_PST8[] = "TZ=PST8";
3036 main()
3037 {
3038   time_t now = time ((time_t *) 0);
3039   int hour_GMT0, hour_unset;
3040   if (putenv (TZ_GMT0) != 0)
3041     exit (1);
3042   hour_GMT0 = localtime (&now)->tm_hour;
3043   unsetenv("TZ");
3044   hour_unset = localtime (&now)->tm_hour;
3045   if (putenv (TZ_PST8) != 0)
3046     exit (1);
3047   if (localtime (&now)->tm_hour == hour_GMT0)
3048     exit (1);
3049   unsetenv("TZ");
3050   if (localtime (&now)->tm_hour != hour_unset)
3051     exit (1);
3052   exit (0);
3053 }]])], emacs_cv_localtime_cache=no, emacs_cv_localtime_cache=yes,
3054 [# If we have tzset, assume the worst when cross-compiling.
3055 emacs_cv_localtime_cache=yes])
3056 else
3057         # If we lack tzset, report that localtime does not cache TZ,
3058         # since we can't invalidate the cache if we don't have tzset.
3059         emacs_cv_localtime_cache=no
3060 fi])dnl
3061 AC_MSG_RESULT($emacs_cv_localtime_cache)
3062 if test $emacs_cv_localtime_cache = yes; then
3063   AC_DEFINE(LOCALTIME_CACHE, 1,
3064             [Define to 1 if localtime caches TZ.])
3065 fi
3066
3067 ok_so_far=yes
3068 AC_CHECK_FUNC(socket, , ok_so_far=no)
3069 if test $ok_so_far = yes; then
3070   AC_CHECK_HEADER(netinet/in.h, , ok_so_far=no)
3071 fi
3072 if test $ok_so_far = yes; then
3073   AC_CHECK_HEADER(arpa/inet.h, , ok_so_far=no)
3074 fi
3075 if test $ok_so_far = yes; then
3076 dnl Fixme: Not used.  Should this be HAVE_SOCKETS?
3077   AC_DEFINE(HAVE_INET_SOCKETS, 1,
3078             [Define to 1 if you have inet sockets.])
3079 fi
3080
3081 if test -f /usr/lpp/X11/bin/smt.exp; then
3082   AC_DEFINE(HAVE_AIX_SMT_EXP, 1,
3083             [Define to 1 if the file /usr/lpp/X11/bin/smt.exp exists.])
3084 fi
3085
3086 AC_MSG_CHECKING(whether system supports dynamic ptys)
3087 if test -d /dev/pts && ls -d /dev/ptmx > /dev/null 2>&1 ; then
3088   AC_MSG_RESULT(yes)
3089   AC_DEFINE(HAVE_DEV_PTMX, 1, [Define to 1 if dynamic ptys are supported.])
3090 else
3091   AC_MSG_RESULT(no)
3092 fi
3093
3094 AC_FUNC_FORK
3095
3096 AC_CHECK_FUNCS(snprintf)
3097
3098 dnl Adapted from Haible's version.
3099 AC_CACHE_CHECK([for nl_langinfo and CODESET], emacs_cv_langinfo_codeset,
3100   [AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <langinfo.h>]],
3101     [[char* cs = nl_langinfo(CODESET);]])],
3102     emacs_cv_langinfo_codeset=yes,
3103     emacs_cv_langinfo_codeset=no)
3104   ])
3105 if test $emacs_cv_langinfo_codeset = yes; then
3106   AC_DEFINE(HAVE_LANGINFO_CODESET, 1,
3107     [Define if you have <langinfo.h> and nl_langinfo(CODESET).])
3108 fi
3109
3110 AC_TYPE_MBSTATE_T
3111
3112 AC_CACHE_CHECK([for C restricted array declarations], emacs_cv_c_restrict_arr,
3113   [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[void fred (int x[__restrict]);]], [[]])],
3114                   emacs_cv_c_restrict_arr=yes, emacs_cv_c_restrict_arr=no)])
3115 if test "$emacs_cv_c_restrict_arr" = yes; then
3116   AC_DEFINE(__restrict_arr, __restrict,
3117     [Define to compiler's equivalent of C99 restrict keyword in array
3118      declarations.  Define as empty for no equivalent.])
3119 fi
3120
3121 dnl Fixme: AC_SYS_POSIX_TERMIOS should probably be used, but it's not clear
3122 dnl how the tty code is related to POSIX and/or other versions of termios.
3123 dnl The following looks like a useful start.
3124 dnl
3125 dnl AC_SYS_POSIX_TERMIOS
3126 dnl if test $ac_cv_sys_posix_termios = yes; then
3127 dnl    AC_DEFINE(HAVE_TERMIOS, 1, [Define to 1 if you have POSIX-style functions
3128 dnl                                and macros for terminal control.])
3129 dnl    AC_DEFINE(HAVE_TCATTR, 1, [Define to 1 if you have tcgetattr and tcsetattr.])
3130 dnl fi
3131
3132 dnl Every platform that uses configure (ie every non-MS platform)
3133 dnl supports this.  There is a create-lockfiles option you can
3134 dnl customize if you do not want the lock files to be written.
3135 dnl So it is not clear that this #define still needs to exist.
3136 AC_DEFINE(CLASH_DETECTION, 1, [Define if you want lock files to be written,
3137   so that Emacs can tell instantly when you try to modify a file that
3138   someone else has modified in his/her Emacs.])
3139
3140 dnl Everybody supports this, except MS.
3141 dnl Seems like the kind of thing we should be testing for, though.
3142 ## Note: PTYs are broken on darwin <6.  Use at your own risk.
3143 AC_DEFINE(HAVE_PTYS, 1, [Define if the system supports pty devices.])
3144
3145 dnl Everybody supports this, except MS-DOS.
3146 dnl Seems like the kind of thing we should be testing for, though.
3147 dnl Compare with HAVE_INET_SOCKETS (which is unused...) above.
3148 AC_DEFINE(HAVE_SOCKETS, 1, [Define if the system supports
3149   4.2-compatible sockets.])
3150
3151
3152 case $opsys in
3153   darwin | gnu | hpux* | *bsd )
3154     AC_DEFINE(NO_TERMIO, 1, [Define if termio.h should not be included.])
3155   ;;
3156 esac
3157
3158
3159 case $opsys in
3160   dnl SIGIO exists, but the feature doesn't work in the way Emacs needs.
3161   dnl See eg <http://article.gmane.org/gmane.os.openbsd.ports/46831>.
3162   hpux* | irix6-5 | openbsd | sol2* | unixware )
3163     AC_DEFINE(BROKEN_SIGIO, 1, [Define if SIGIO should not be used.])
3164     ;;
3165
3166   aix4-2)
3167     dnl BUILD 9008 - FIONREAD problem still exists in X-Windows.
3168     AC_DEFINE(BROKEN_FIONREAD, 1, [Define if FIONREAD should not be used.])
3169     dnl As we define BROKEN_FIONREAD, SIGIO will be undefined in systty.h.
3170     dnl But, on AIX, SIGAIO, SIGPTY, and SIGPOLL are defined as SIGIO,
3171     dnl which causes compilation error at init_signals in sysdep.c.
3172     dnl So, we define these macros so that syssignal.h detects them
3173     dnl and undefine SIGAIO, SIGPTY and SIGPOLL.
3174     AC_DEFINE(BROKEN_SIGAIO, 1, [Define if SIGAIO should not be used.])
3175     AC_DEFINE(BROKEN_SIGPOLL,1, [Define if SIGPOLL should not be used.])
3176     AC_DEFINE(BROKEN_SIGPTY, 1, [Define if SIGPTY should not be used.])
3177
3178     dnl On AIX Emacs uses the gmalloc.c malloc implementation.  But given
3179     dnl the way this system works, libc functions that return malloced
3180     dnl memory use the libc malloc implementation. Calling xfree or
3181     dnl xrealloc on the results of such functions results in a crash.
3182     dnl
3183     dnl One solution for this could be to define SYSTEM_MALLOC in configure,
3184     dnl but that does not currently work on this system.
3185     dnl
3186     dnl It is possible to completely override the malloc implementation on
3187     dnl AIX, but that involves putting the malloc functions in a shared
3188     dnl library and setting the MALLOCTYPE environment variable to point to
3189     dnl that shared library.
3190     dnl
3191     dnl Emacs currently calls xrealloc on the results of get_current_dir name,
3192     dnl to avoid a crash just use the Emacs implementation for that function.
3193     dnl
3194     dnl FIXME We could change the AC_CHECK_FUNCS call near the start
3195     dnl of this file, so that we do not check for get_current_dir_name
3196     dnl on AIX.  But that might be fragile if something else ends
3197     dnl up testing for get_current_dir_name as a dependency.
3198     AC_DEFINE(BROKEN_GET_CURRENT_DIR_NAME, 1, [Define if
3199       get_current_dir_name should not be used.])
3200     ;;
3201
3202   freebsd)
3203     dnl Circumvent a bug in FreeBSD.  In the following sequence of
3204     dnl writes/reads on a PTY, read(2) returns bogus data:
3205     dnl
3206     dnl write(2)  1022 bytes
3207     dnl write(2)   954 bytes, get EAGAIN
3208     dnl read(2)   1024 bytes in process_read_output
3209     dnl read(2)     11 bytes in process_read_output
3210     dnl
3211     dnl That is, read(2) returns more bytes than have ever been written
3212     dnl successfully.  The 1033 bytes read are the 1022 bytes written
3213     dnl successfully after processing (for example with CRs added if the
3214     dnl terminal is set up that way which it is here).  The same bytes will
3215     dnl be seen again in a later read(2), without the CRs.
3216     AC_DEFINE(BROKEN_PTY_READ_AFTER_EAGAIN, 1, [Define on FreeBSD to
3217       work around an issue when reading from a PTY.])
3218     ;;
3219
3220   dnl Define the following so emacs symbols will not conflict with those
3221   dnl in the System framework.  Otherwise -prebind will not work.
3222   darwin)
3223     AC_DEFINE(NO_ABORT, 1, [Do not define abort in emacs.c.])
3224     ;;
3225 esac
3226
3227 case $opsys in
3228   gnu-* | sol2-10 )
3229     dnl FIXME Can't we test if this exists (eg /proc/$$)?
3230     AC_DEFINE(HAVE_PROCFS, 1, [Define if you have the /proc filesystem.])
3231   ;;
3232 esac
3233
3234 case $opsys in
3235   darwin | freebsd | netbsd | openbsd )
3236     AC_DEFINE(DONT_REOPEN_PTY, 1, [Define if process.c does not need to
3237       close a pty to make it a controlling terminal (it is already a
3238       controlling terminal of the subprocess, because we did ioctl TIOCSCTTY).])
3239   ;;
3240 esac
3241
3242 dnl FIXME Surely we can test for this rather than hard-code it.
3243 case $opsys in
3244   netbsd | openbsd) sound_device="/dev/audio" ;;
3245   *) sound_device="/dev/dsp" ;;
3246 esac
3247
3248 dnl Used in sound.c
3249 AC_DEFINE_UNQUOTED(DEFAULT_SOUND_DEVICE, "$sound_device",
3250   [Name of the default sound device.])
3251
3252
3253 dnl Emacs can read input using SIGIO and buffering characters itself,
3254 dnl or using CBREAK mode and making C-g cause SIGINT.
3255 dnl The choice is controlled by the variable interrupt_input.
3256 dnl
3257 dnl Define INTERRUPT_INPUT to make interrupt_input = 1 the default (use SIGIO)
3258 dnl
3259 dnl Emacs uses the presence or absence of the SIGIO and BROKEN_SIGIO macros
3260 dnl to indicate whether or not signal-driven I/O is possible.  It uses
3261 dnl INTERRUPT_INPUT to decide whether to use it by default.
3262 dnl
3263 dnl SIGIO can be used only on systems that implement it (4.2 and 4.3).
3264 dnl CBREAK mode has two disadvantages
3265 dnl 1) At least in 4.2, it is impossible to handle the Meta key properly.
3266 dnl I hear that in system V this problem does not exist.
3267 dnl 2) Control-G causes output to be discarded.
3268 dnl I do not know whether this can be fixed in system V.
3269 dnl
3270 dnl Another method of doing input is planned but not implemented.
3271 dnl It would have Emacs fork off a separate process
3272 dnl to read the input and send it to the true Emacs process
3273 dnl through a pipe.
3274 case $opsys in
3275   darwin | gnu-linux | gnu-kfreebsd )
3276     AC_DEFINE(INTERRUPT_INPUT, 1, [Define to read input using SIGIO.])
3277   ;;
3278 esac
3279
3280
3281 dnl If the system's imake configuration file defines `NeedWidePrototypes'
3282 dnl as `NO', we must define NARROWPROTO manually.  Such a define is
3283 dnl generated in the Makefile generated by `xmkmf'.  If we don't define
3284 dnl NARROWPROTO, we will see the wrong function prototypes for X functions
3285 dnl taking float or double parameters.
3286 case $opsys in
3287   cygwin|gnu|gnu-linux|gnu-kfreebsd|irix6-5|freebsd|netbsd|openbsd)
3288     AC_DEFINE(NARROWPROTO, 1, [Define if system's imake configuration
3289       file defines `NeedWidePrototypes' as `NO'.])
3290   ;;
3291 esac
3292
3293
3294 dnl Used in process.c, this must be a loop, even if it only runs once.
3295 dnl (Except on SGI; see below.  Take that, clarity and consistency!)
3296 AH_TEMPLATE(PTY_ITERATION, [How to iterate over PTYs.])
3297 dnl Only used if !PTY_ITERATION.  Iterate from FIRST_PTY_LETTER to z,
3298 dnl trying suffixes 0-16.
3299 AH_TEMPLATE(FIRST_PTY_LETTER, [Letter to use in finding device name of
3300   first PTY, if PTYs are supported.])
3301
3302 case $opsys in
3303   aix4-2 )
3304     AC_DEFINE(PTY_ITERATION, [int c; for (c = 0; !c ; c++)] )
3305     ;;
3306
3307   cygwin )
3308     AC_DEFINE(PTY_ITERATION, [int i; for (i = 0; i < 1; i++)] )
3309     ;;
3310
3311   darwin )
3312     AC_DEFINE(PTY_ITERATION, [int i; for (i = 0; i < 1; i++)] )
3313     dnl Not used, because PTY_ITERATION is defined.
3314     AC_DEFINE(FIRST_PTY_LETTER, ['p'])
3315     ;;
3316
3317   gnu | hpux* | freebsd | netbsd | openbsd )
3318     AC_DEFINE(FIRST_PTY_LETTER, ['p'])
3319     ;;
3320
3321   gnu-linux | gnu-kfreebsd )
3322     dnl if HAVE_GRANTPT
3323     if test "x$ac_cv_func_grantpt" = xyes; then
3324       AC_DEFINE(PTY_ITERATION, [int i; for (i = 0; i < 1; i++)] )
3325     else
3326       AC_DEFINE(FIRST_PTY_LETTER, ['p'])
3327     fi
3328     ;;
3329
3330   irix6-5 )
3331     dnl It looks like this cannot be right, because it is not a loop.
3332     dnl However, process.c actually does this:
3333     dnl # ifndef __sgi
3334     dnl   continue;
3335     dnl # else
3336     dnl   return -1;
3337     dnl # endif
3338     dnl which presumably makes it OK, since irix == sgi (?).
3339     dnl FIXME it seems like this special treatment is unnecessary?
3340     dnl Why can't irix use a single-trip loop like eg cygwin?
3341     AC_DEFINE(PTY_ITERATION, [])
3342     dnl Not used, because PTY_ITERATION is defined.
3343     AC_DEFINE(FIRST_PTY_LETTER, ['q'])
3344     ;;
3345
3346   sol2* | unixware )
3347     dnl This change means that we don't loop through allocate_pty too
3348     dnl many times in the (rare) event of a failure.
3349     AC_DEFINE(FIRST_PTY_LETTER, ['z'])
3350     ;;
3351 esac
3352
3353
3354 AH_TEMPLATE(SIGNALS_VIA_CHARACTERS, [Make process_send_signal work by
3355 "typing" a signal character on the pty.])
3356
3357 case $opsys in
3358   dnl Perry Smith <pedz@ddivt1.austin.ibm.com> says this is correct for AIX.
3359   dnl thomas@mathematik.uni-bremen.de says this is needed for IRIX.
3360   aix4-2 | cygwin | gnu | irix6-5 | freebsd | netbsd | openbsd )
3361     AC_DEFINE(SIGNALS_VIA_CHARACTERS, 1)
3362     ;;
3363
3364   dnl 21 Jun 06: Eric Hanchrow <offby1@blarg.net> says this works.
3365   dnl FIXME Does gnu-kfreebsd have linux/version.h?  It seems unlikely...
3366   gnu-linux | gnu-kfreebsd )
3367
3368     AC_MSG_CHECKING([for signals via characters])
3369     AC_PREPROC_IFELSE([AC_LANG_PROGRAM([[
3370 #include <linux/version.h>
3371 #if LINUX_VERSION_CODE < 0x20400
3372 # error "Linux version too old"
3373 #endif
3374       ]], [[]])], emacs_signals_via_chars=yes, emacs_signals_via_chars=no)
3375
3376     AC_MSG_RESULT([$emacs_signals_via_chars])
3377     test $emacs_signals_via_chars = yes && AC_DEFINE(SIGNALS_VIA_CHARACTERS, 1)
3378     ;;
3379 esac
3380
3381
3382 dnl Used in dispnew.c
3383 AH_TEMPLATE(PENDING_OUTPUT_COUNT, [Number of chars of output in the
3384 buffer of a stdio stream.])
3385
3386 dnl FIXME just PENDING_OUTPUT_COUNT should suffice.
3387 AH_TEMPLATE(GNU_LIBRARY_PENDING_OUTPUT_COUNT, [Value of
3388 PENDING_OUTPUT_COUNT if using the GNU C library.])
3389
3390 case $opsys in
3391   cygwin | darwin | freebsd | netbsd | openbsd )
3392     AC_DEFINE(PENDING_OUTPUT_COUNT(FILE), [((FILE)->_p - (FILE)->_bf._base)])
3393     ;;
3394
3395   unixware)
3396     AC_DEFINE(PENDING_OUTPUT_COUNT(FILE), [((FILE)->__ptr - (FILE)->__base)])
3397     ;;
3398
3399   gnu | gnu-linux | gnu-kfreebsd )
3400     AC_MSG_CHECKING([for style of pending output formalism])
3401     dnl In autoconf 2.67 (?) and later, we could use a single test
3402     dnl since the preprocessed output is accessible in "conftest.i".
3403     AC_PREPROC_IFELSE([AC_LANG_PROGRAM([[
3404 #include <stdio.h>
3405 #if !defined (_IO_STDIO_H) && !defined (_STDIO_USES_IOSTREAM)
3406 # error "stdio definitions not found"
3407 #endif
3408       ]], [[]])], emacs_pending_output=new, emacs_pending_output=unknown)
3409
3410       if test $emacs_pending_output = unknown; then
3411         case $opsys in
3412           gnu-linux | gnu-kfreebsd)
3413             AC_PREPROC_IFELSE([AC_LANG_PROGRAM([[
3414 #include <stdio.h>
3415 #ifndef __UCLIBC__
3416 # error "not using uclibc"
3417 #endif
3418             ]], [[]])], emacs_pending_output=uclibc, emacs_pending_output=old)
3419             ;;
3420         esac
3421       fi
3422
3423       AC_MSG_RESULT([$emacs_pending_output])
3424
3425       case $emacs_pending_output in
3426         new)
3427           dnl New C libio names.
3428           AC_DEFINE(GNU_LIBRARY_PENDING_OUTPUT_COUNT(FILE),
3429             [((FILE)->_IO_write_ptr - (FILE)->_IO_write_base)])
3430           ;;
3431         uclibc)
3432           dnl Using the uClibc library.
3433           AC_DEFINE(GNU_LIBRARY_PENDING_OUTPUT_COUNT(FILE),
3434             [((FILE)->__bufpos - (FILE)->__bufstart)])
3435           ;;
3436         old)
3437           dnl Old C++ iostream names.
3438           AC_DEFINE(GNU_LIBRARY_PENDING_OUTPUT_COUNT(FILE),
3439             [((FILE)->_pptr - (FILE)->_pbase)])
3440           ;;
3441       esac
3442     ;;
3443 esac
3444
3445
3446 dnl Used in vm-limit.c
3447 AH_TEMPLATE(DATA_START, [Address of the start of the data segment.])
3448 dnl Used in lisp.h, emacs.c, mem-limits.h
3449 dnl NEWS.18 describes this as "a number which contains
3450 dnl the high bits to be inclusive or'ed with pointers that are unpacked."
3451 AH_TEMPLATE(DATA_SEG_BITS, [Extra bits to be or'd in with any pointers
3452 stored in a Lisp_Object.])
3453 dnl if Emacs uses fewer than 32 bits for the value field of a LISP_OBJECT.
3454
3455 case $opsys in
3456   gnu)
3457     dnl libc defines data_start.
3458     AC_DEFINE(DATA_START, [({ extern int data_start; (char *) &data_start; })])
3459     ;;
3460
3461   hpux*)
3462     dnl The data segment on this machine always starts at address 0x40000000.
3463     AC_DEFINE(DATA_START, [0x40000000])
3464     AC_DEFINE(DATA_SEG_BITS, [0x40000000])
3465     ;;
3466   irix6-5)
3467     AC_DEFINE(DATA_START, [0x10000000])
3468     AC_DEFINE(DATA_SEG_BITS, [0x10000000])
3469     ;;
3470 esac
3471
3472
3473 AH_TEMPLATE(TAB3, [Undocumented.])
3474
3475 case $opsys in
3476   darwin) AC_DEFINE(TAB3, OXTABS) ;;
3477
3478   gnu | freebsd | netbsd | openbsd )
3479     AC_DEFINE(TABDLY, OXTABS, [Undocumented.] )
3480     AC_DEFINE(TAB3, OXTABS)
3481     ;;
3482
3483   hpux*)
3484     AC_DEFINE(RUN_TIME_REMAP, 1, [Define if emacs.c needs to call
3485       run_time_remap; for HPUX.])
3486     ;;
3487 esac
3488
3489
3490 dnl Used in xfaces.c.
3491 case $opsys in
3492   hpux* | sol2* )
3493     AC_DEFINE(XOS_NEEDS_TIME_H, 1, [Compensate for a bug in Xos.h on
3494       some systems, where it requires time.h.])
3495     ;;
3496 esac
3497
3498
3499 case $opsys in
3500   dnl Emacs supplies its own malloc, but glib (part of Gtk+) calls
3501   dnl memalign and on Cygwin, that becomes the Cygwin-supplied memalign.
3502   dnl As malloc is not the Cygwin malloc, the Cygwin memalign always
3503   dnl returns ENOSYS.  A workaround is to set G_SLICE=always-malloc. */
3504   cygwin)
3505     AC_DEFINE(G_SLICE_ALWAYS_MALLOC, 1, [Define to set the
3506       G_SLICE environment variable to "always-malloc" at startup, if
3507       using GTK.])
3508     ;;
3509
3510   gnu) opsysfile="s/bsd-common.h" ;;
3511
3512   gnu-kfreebsd) opsysfile="s/gnu-linux.h" ;;
3513
3514   hpux11)
3515     dnl See comments in sysdep.c:sys_signal.
3516     dnl SA_RESTART resets the timeout of `select' on hpux11.
3517     dnl Defining BROKEN_SA_RESTART is not the same as undef'ing SA_RESTART.
3518     AC_DEFINE(BROKEN_SA_RESTART, 1, [Define if SA_RESTART should only
3519       be used in batch mode.])
3520     dnl It works to open the pty's tty in the parent (Emacs), then
3521     dnl close and reopen it in the child.
3522     AC_DEFINE(USG_SUBTTY_WORKS, 1, [Define for USG systems where it
3523       works to open a pty's tty in the parent process, then close and
3524       reopen it in the child.])
3525
3526     opsysfile="s/hpux10-20.h"
3527     ;;
3528
3529   irix6-5)
3530     AC_DEFINE(PREFER_VSUSP, 1, [Define if process_send_signal should
3531       use VSUSP instead of VSWTCH.])
3532     AC_DEFINE(SETPGRP_RELEASES_CTTY, 1, [Define if process.c:child_setup
3533       should not call setpgrp.])
3534     ;;
3535
3536   openbsd) opsysfile="s/netbsd.h" ;;
3537
3538   sol2-10)
3539     AC_DEFINE(_STRUCTURED_PROC, 1, [Needed for system_process_attributes
3540       on Solaris.])
3541     opsysfile="s/sol2-6.h"
3542     ;;
3543 esac
3544
3545 # Set up the CFLAGS for real compilation, so we can substitute it.
3546 CFLAGS="$REAL_CFLAGS"
3547 CPPFLAGS="$REAL_CPPFLAGS"
3548
3549 ## Hack to detect a buggy GCC version.
3550 if test "x$GCC" = xyes \
3551    && test x"`$CC --version 2> /dev/null | grep 'gcc.* 4.5.0'`" != x \
3552    && test x"`echo $CFLAGS | grep '\-O@<:@23@:>@'`" != x \
3553    && test x"`echo $CFLAGS | grep '\-fno-optimize-sibling-calls'`" = x; then
3554    AC_MSG_ERROR([GCC 4.5.0 has problems compiling Emacs; see etc/PROBLEMS'.])
3555 fi
3556
3557 version=$PACKAGE_VERSION
3558
3559 ### Specify what sort of things we'll be editing into Makefile and config.h.
3560 ### Use configuration here uncanonicalized to avoid exceeding size limits.
3561 AC_SUBST(version)
3562 AC_SUBST(configuration)
3563 ## Unused?
3564 AC_SUBST(canonical)
3565 AC_SUBST(srcdir)
3566 AC_SUBST(prefix)
3567 AC_SUBST(exec_prefix)
3568 AC_SUBST(bindir)
3569 AC_SUBST(datadir)
3570 AC_SUBST(sharedstatedir)
3571 AC_SUBST(libexecdir)
3572 AC_SUBST(mandir)
3573 AC_SUBST(infodir)
3574 AC_SUBST(lispdir)
3575 AC_SUBST(leimdir)
3576 AC_SUBST(standardlisppath)
3577 AC_SUBST(locallisppath)
3578 AC_SUBST(lisppath)
3579 AC_SUBST(x_default_search_path)
3580 AC_SUBST(etcdir)
3581 AC_SUBST(archlibdir)
3582 AC_SUBST(docdir)
3583 AC_SUBST(bitmapdir)
3584 AC_SUBST(gamedir)
3585 AC_SUBST(gameuser)
3586 ## FIXME? Nothing uses @LD_SWITCH_X_SITE@.
3587 ## src/Makefile.in did add LD_SWITCH_X_SITE (as a cpp define) to the
3588 ## end of LIBX_BASE, but nothing ever set it.
3589 AC_SUBST(LD_SWITCH_X_SITE)
3590 AC_SUBST(C_SWITCH_X_SITE)
3591 AC_SUBST(GNUSTEP_CFLAGS)
3592 AC_SUBST(CFLAGS)
3593 ## Used in lwlib/Makefile.in.
3594 AC_SUBST(X_TOOLKIT_TYPE)
3595 if test -n "${opsysfile}"; then
3596   S_FILE="\$(srcdir)/${opsysfile}"
3597 else
3598   S_FILE=
3599 fi
3600 AC_SUBST(S_FILE)
3601 AC_SUBST(ns_appdir)
3602 AC_SUBST(ns_appbindir)
3603 AC_SUBST(ns_appresdir)
3604 AC_SUBST(ns_appsrc)
3605 AC_SUBST(GNU_OBJC_CFLAGS)
3606 AC_SUBST(OTHER_FILES)
3607
3608 AC_DEFINE_UNQUOTED(EMACS_CONFIGURATION,  "${canonical}",
3609                    [Define to the canonical Emacs configuration name.])
3610 AC_DEFINE_UNQUOTED(EMACS_CONFIG_OPTIONS, "${ac_configure_args}",
3611                    [Define to the options passed to configure.])
3612 if test -n "$opsysfile"; then
3613   AC_DEFINE_UNQUOTED(config_opsysfile, "${opsysfile}",
3614                      [Define to the used os dependent file.])
3615 fi
3616
3617 XMENU_OBJ=
3618 XOBJ=
3619 FONT_OBJ=
3620 if test "${HAVE_X_WINDOWS}" = "yes" ; then
3621   AC_DEFINE(HAVE_X_WINDOWS, 1,
3622             [Define to 1 if you want to use the X window system.])
3623   XMENU_OBJ=xmenu.o
3624   XOBJ="xterm.o xfns.o xselect.o xrdb.o fontset.o xsmfns.o fringe.o image.o xsettings.o xgselect.o"
3625   FONT_OBJ=xfont.o
3626   if test "$HAVE_XFT" = "yes"; then
3627     FONT_OBJ="$FONT_OBJ ftfont.o xftfont.o ftxfont.o"
3628   elif test "$HAVE_FREETYPE" = "yes"; then
3629     FONT_OBJ="$FONT_OBJ ftfont.o ftxfont.o"
3630   fi
3631   AC_SUBST(FONT_OBJ)
3632 fi
3633 AC_SUBST(XMENU_OBJ)
3634 AC_SUBST(XOBJ)
3635 AC_SUBST(FONT_OBJ)
3636
3637 WIDGET_OBJ=
3638 MOTIF_LIBW=
3639 if test "${USE_X_TOOLKIT}" != "none" ; then
3640   WIDGET_OBJ=widget.o
3641   AC_DEFINE(USE_X_TOOLKIT, 1, [Define to 1 if using an X toolkit.])
3642   if test "${USE_X_TOOLKIT}" = "LUCID"; then
3643     AC_DEFINE(USE_LUCID, 1, [Define to 1 if using the Lucid X toolkit.])
3644   elif test "${USE_X_TOOLKIT}" = "MOTIF"; then
3645     AC_DEFINE(USE_MOTIF, 1, [Define to 1 if using the Motif X toolkit.])
3646     MOTIF_LIBW=-lXm
3647     case "$opsys" in
3648       gnu-linux)
3649         ## Paul Abrahams <abrahams at equinox.shaysnet.com> says this is needed.
3650         MOTIF_LIBW="$MOTIF_LIBW -lXpm"
3651         ;;
3652
3653       unixware)
3654         ## Richard Anthony Ryan <ryanr at ellingtn.ftc.nrcs.usda.gov>
3655         ## says -lXimp is needed in UNIX_SV ... 4.2 1.1.2.
3656         MOTIF_LIBW="MOTIF_LIBW -lXimp"
3657         ;;
3658
3659       aix4-2)
3660         ## olson@mcs.anl.gov says -li18n is needed by -lXm.
3661         MOTIF_LIBW="$MOTIF_LIBW -li18n"
3662         ;;
3663     esac
3664     MOTIF_LIBW="$MOTIF_LIBW $LIBXP"
3665   fi
3666 fi
3667 AC_SUBST(WIDGET_OBJ)
3668
3669 TOOLKIT_LIBW=
3670 case "$USE_X_TOOLKIT" in
3671   MOTIF) TOOLKIT_LIBW="$MOTIF_LIBW" ;;
3672   LUCID) TOOLKIT_LIBW="$LUCID_LIBW" ;;
3673   none) test "x$HAVE_GTK" = "xyes" && TOOLKIT_LIBW="$GTK_LIBS" ;;
3674 esac
3675 AC_SUBST(TOOLKIT_LIBW)
3676
3677 if test "$USE_X_TOOLKIT" = "none"; then
3678   LIBXT_OTHER="\$(LIBXSM)"
3679   OLDXMENU_TARGET="really-oldXMenu"
3680 else
3681   LIBXT_OTHER="\$(LIBXMU) -lXt \$(LIBXTR6) -lXext"
3682   OLDXMENU_TARGET="really-lwlib"
3683 fi
3684 AC_SUBST(LIBXT_OTHER)
3685
3686 ## The X Menu stuff is present in the X10 distribution, but missing
3687 ## from X11.  If we have X10, just use the installed library;
3688 ## otherwise, use our own copy.
3689 if test "${HAVE_X11}" = "yes" ; then
3690   AC_DEFINE(HAVE_X11, 1,
3691             [Define to 1 if you want to use version 11 of X windows.
3692              Otherwise, Emacs expects to use version 10.])
3693
3694   if test "$USE_X_TOOLKIT" = "none"; then
3695     OLDXMENU="\${oldXMenudir}/libXMenu11.a"
3696   else
3697     OLDXMENU="\${lwlibdir}/liblw.a"
3698   fi
3699   LIBXMENU="\$(OLDXMENU)"
3700   LIBX_OTHER="\$(LIBXT) \$(LIBX_EXTRA)"
3701   OLDXMENU_DEPS="\${OLDXMENU} ../src/\${OLDXMENU}"
3702 else
3703   ## For a syntactically valid Makefile; not actually used for anything.
3704   ## See comments in src/Makefile.in.
3705   OLDXMENU=nothing
3706   ## FIXME This case (!HAVE_X11 && HAVE_X_WINDOWS) is no longer possible(?).
3707   if test "${HAVE_X_WINDOWS}" = "yes"; then
3708     LIBXMENU="-lXMenu"
3709   else
3710     LIBXMENU=
3711   fi
3712   LIBX_OTHER=
3713   OLDXMENU_DEPS=
3714 fi
3715
3716 if test "$HAVE_GTK" = "yes" || test "$HAVE_MENUS" != "yes"; then
3717   OLDXMENU_TARGET=
3718   OLDXMENU=nothing
3719   LIBXMENU=
3720   OLDXMENU_DEPS=
3721 fi
3722
3723 AC_SUBST(OLDXMENU_TARGET)
3724 AC_SUBST(OLDXMENU)
3725 AC_SUBST(LIBXMENU)
3726 AC_SUBST(LIBX_OTHER)
3727 AC_SUBST(OLDXMENU_DEPS)
3728
3729 if test "${HAVE_MENUS}" = "yes" ; then
3730   AC_DEFINE(HAVE_MENUS, 1,
3731             [Define to 1 if you have mouse menus.
3732              (This is automatic if you use X, but the option to specify it remains.)
3733              It is also defined with other window systems that support xmenu.c.])
3734 fi
3735
3736 if test "${GNU_MALLOC}" = "yes" ; then
3737   AC_DEFINE(GNU_MALLOC, 1,
3738             [Define to 1 if you want to use the GNU memory allocator.])
3739 fi
3740
3741 RALLOC_OBJ=
3742 if test "${REL_ALLOC}" = "yes" ; then
3743   AC_DEFINE(REL_ALLOC, 1,
3744             [Define REL_ALLOC if you want to use the relocating allocator for
3745              buffer space.])
3746
3747   test "$system_malloc" != "yes" && RALLOC_OBJ=ralloc.o
3748 fi
3749 AC_SUBST(RALLOC_OBJ)
3750
3751 if test "$opsys" = "cygwin"; then
3752   CYGWIN_OBJ="sheap.o"
3753   ## Cygwin differs because of its unexec().
3754   PRE_ALLOC_OBJ=
3755   POST_ALLOC_OBJ=lastfile.o
3756 else
3757   CYGWIN_OBJ=
3758   PRE_ALLOC_OBJ=lastfile.o
3759   POST_ALLOC_OBJ=
3760 fi
3761 AC_SUBST(CYGWIN_OBJ)
3762 AC_SUBST(PRE_ALLOC_OBJ)
3763 AC_SUBST(POST_ALLOC_OBJ)
3764
3765 case "$opsys" in
3766   aix4-2) LD_SWITCH_SYSTEM_TEMACS="-Wl,-bnodelcsect" ;;
3767
3768   darwin)
3769    ## The -headerpad option tells ld (see man page) to leave room at the
3770    ## end of the header for adding load commands.  Needed for dumping.
3771    ## 0x690 is the total size of 30 segment load commands (at 56
3772    ## each); under Cocoa 31 commands are required.
3773    if test "$HAVE_NS" = "yes"; then
3774      libs_nsgui="-framework AppKit"
3775      headerpad_extra=6C8
3776    else
3777      libs_nsgui=
3778      headerpad_extra=690
3779    fi
3780    LD_SWITCH_SYSTEM_TEMACS="-fno-pie -prebind $libs_nsgui -Xlinker -headerpad -Xlinker $headerpad_extra"
3781
3782    ## This is here because src/Makefile.in did some extra fiddling around
3783    ## with LD_SWITCH_SYSTEM.  The cpp logic was:
3784    ##   #ifndef LD_SWITCH_SYSTEM
3785    ##   #if !defined (__GNUC__) && ((defined (BSD_SYSTEM) && !defined (COFF)))
3786    ## Since all the *bsds define LD_SWITCH_SYSTEM, this simplifies to:
3787    ## not using gcc, darwin.
3788    ## Because this was done in src/Makefile.in, the resulting part of
3789    ## LD_SWITCH_SYSTEM was not used in configure (ie, in ac_link).
3790    ## It therefore seems cleaner to put this in LD_SWITCH_SYSTEM_TEMACS,
3791    ## rather than LD_SWITCH_SYSTEM.
3792    test "x$LD_SWITCH_SYSTEM" = "x" && test "x$GCC" != "xyes" && \
3793      LD_SWITCH_SYSTEM_TEMACS="-X $LD_SWITCH_SYSTEM_TEMACS"
3794    ;;
3795
3796   ## LD_SWITCH_X_SITE_RPATH is a -rpath option saying where to
3797   ## find X at run-time.
3798   ## When handled by cpp, this was in LD_SWITCH_SYSTEM.  However, at the
3799   ## point where configure sourced the s/*.h file, LD_SWITCH_X_SITE_RPATH
3800   ## had not yet been defined and was expanded to null.  Hence LD_SWITCH_SYSTEM
3801   ## had different values in configure (in ac_link) and src/Makefile.in.
3802   ## It seems clearer therefore to put this piece in LD_SWITCH_SYSTEM_TEMACS.
3803   gnu*) LD_SWITCH_SYSTEM_TEMACS="\$(LD_SWITCH_X_SITE_RPATH)" ;;
3804
3805   *) LD_SWITCH_SYSTEM_TEMACS= ;;
3806 esac
3807
3808 if test "$NS_IMPL_GNUSTEP" = "yes"; then
3809   LD_SWITCH_SYSTEM_TEMACS="${LD_SWITCH_SYSTEM_TEMACS} -L${GNUSTEP_SYSTEM_LIBRARIES} ${GNUSTEP_LOCAL_LIBRARIES} -lgnustep-gui -lgnustep-base -lobjc -lpthread"
3810 fi
3811
3812 AC_SUBST(LD_SWITCH_SYSTEM_TEMACS)
3813
3814
3815 LD_FIRSTFLAG=
3816 ORDINARY_LINK=
3817 case "$opsys" in
3818   ## gnu: GNU needs its own crt0.
3819   aix4-2|cygwin|darwin|gnu|hpux*|irix6-5|sol2*|unixware) ORDINARY_LINK=yes ;;
3820
3821   ## On post 1.3 releases of NetBSD, gcc -nostdlib also clears the
3822   ## library search parth, i.e. it won't search /usr/lib for libc and
3823   ## friends.  Using -nostartfiles instead avoids this problem, and
3824   ## will also work on earlier NetBSD releases.
3825   netbsd|openbsd) LD_FIRSTFLAG="-nostartfiles" ;;
3826
3827   ## powerpc*: NAKAJI Hiroyuki <nakaji@tutrp.tut.ac.jp> says
3828   ##   MkLinux/LinuxPPC needs this.
3829   ## s390x-* only supports opsys = gnu-linux so it can be added here.
3830   gnu-*)
3831     case "$canonical" in
3832       powerpc*|s390x-*) LD_FIRSTFLAG="-nostdlib" ;;
3833     esac
3834     ;;
3835 esac
3836
3837
3838 if test "x$ORDINARY_LINK" = "xyes"; then
3839
3840   LD_FIRSTFLAG=""
3841   AC_DEFINE(ORDINARY_LINK, 1, [Define if the C compiler is the linker.])
3842
3843 ## The system files defining neither ORDINARY_LINK nor LD_FIRSTFLAG are:
3844 ## freebsd, gnu-* not on powerpc*|s390x*.
3845 elif test "x$GCC" = "xyes" && test "x$LD_FIRSTFLAG" = "x"; then
3846
3847   ## Versions of GCC >= 2.0 put their library, libgcc.a, in obscure
3848   ## places that are difficult to figure out at make time.  Fortunately,
3849   ## these same versions allow you to pass arbitrary flags on to the
3850   ## linker, so there is no reason not to use it as a linker.
3851   ##
3852   ## Well, it is not quite perfect.  The "-nostdlib" keeps GCC from
3853   ## searching for libraries in its internal directories, so we have to
3854   ## ask GCC explicitly where to find libgcc.a (LIB_GCC below).
3855   LD_FIRSTFLAG="-nostdlib"
3856 fi
3857
3858 ## FIXME? What setting of EDIT_LDFLAGS should this have?
3859 test "$NS_IMPL_GNUSTEP" = "yes" && LD_FIRSTFLAG="-rdynamic"
3860
3861 AC_SUBST(LD_FIRSTFLAG)
3862
3863
3864 ## FIXME? The logic here is not precisely the same as that above.
3865 ## There is no check here for a pre-defined LD_FIRSTFLAG.
3866 ## Should we only be setting LIB_GCC if LD ~ -nostdlib?
3867 LIB_GCC=
3868 if test "x$GCC" = "xyes" && test "x$ORDINARY_LINK" != "xyes"; then
3869
3870   case "$opsys" in
3871     freebsd|netbsd|openbsd) LIB_GCC= ;;
3872
3873     gnu-*)
3874       ## armin76@gentoo.org reported that the lgcc_s flag is necessary to
3875       ## build on ARM EABI under GNU/Linux.  (Bug#5518)
3876       case $host_cpu in
3877       arm*)
3878         LIB_GCC="-lgcc_s"
3879         ;;
3880       *)
3881         ## FIXME? s/gnu-linux.h used to define LIB_GCC as below, then
3882         ## immediately undefine it again and redefine it to empty.
3883         ## Was the C_SWITCH_X_SITE part really necessary?
3884 ##      LIB_GCC=`$CC $C_SWITCH_X_SITE -print-libgcc-file-name`
3885         LIB_GCC=
3886         ;;
3887       esac
3888       ;;
3889
3890     ## Ask GCC where to find libgcc.a.
3891     *) LIB_GCC=`$CC -print-libgcc-file-name 2> /dev/null` ;;
3892   esac
3893 fi                              dnl if $GCC
3894 AC_SUBST(LIB_GCC)
3895
3896
3897 ## If we're using X11/GNUstep, define some consequences.
3898 if test "$HAVE_X_WINDOWS" = "yes" || test "$HAVE_NS" = "yes"; then
3899   AC_DEFINE(HAVE_WINDOW_SYSTEM, 1, [Define if you have a window system.])
3900   AC_DEFINE(HAVE_MOUSE, 1, [Define if you have mouse support.])
3901 fi
3902
3903
3904 AH_TOP([/* GNU Emacs site configuration template file.
3905
3906 Copyright (C) 1988, 1993-1994, 1999-2002, 2004-2012
3907   Free Software Foundation, Inc.
3908
3909 This file is part of GNU Emacs.
3910
3911 GNU Emacs is free software: you can redistribute it and/or modify
3912 it under the terms of the GNU General Public License as published by
3913 the Free Software Foundation, either version 3 of the License, or
3914 (at your option) any later version.
3915
3916 GNU Emacs is distributed in the hope that it will be useful,
3917 but WITHOUT ANY WARRANTY; without even the implied warranty of
3918 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
3919 GNU General Public License for more details.
3920
3921 You should have received a copy of the GNU General Public License
3922 along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.  */
3923
3924
3925 /* No code in Emacs #includes config.h twice, but some bits of code
3926    intended to work with other packages as well (like gmalloc.c)
3927    think they can include it as many times as they like.  */
3928 #ifndef EMACS_CONFIG_H
3929 #define EMACS_CONFIG_H
3930 ])dnl
3931
3932 AH_BOTTOM([
3933 /* On AIX 3 this must be included before any other include file.  */
3934 #include <alloca.h>
3935 #if ! HAVE_ALLOCA
3936 # error "alloca not available on this machine"
3937 #endif
3938
3939 /* Define AMPERSAND_FULL_NAME if you use the convention
3940    that & in the full name stands for the login id.  */
3941 /* Turned on June 1996 supposing nobody will mind it.  */
3942 #define AMPERSAND_FULL_NAME
3943
3944 /* `subprocesses' should be defined if you want to
3945    have code for asynchronous subprocesses
3946    (as used in M-x compile and M-x shell).
3947    Only MSDOS does not support this (it overrides
3948    this in its config_opsysfile below).  */
3949
3950 #define subprocesses
3951
3952 /* Include the os dependent file.  */
3953 #ifdef config_opsysfile
3954 # include config_opsysfile
3955 #endif
3956
3957 /* GNUstep needs a bit more pure memory.  Of the existing knobs,
3958    SYSTEM_PURESIZE_EXTRA seems like the least likely to cause problems.
3959   (There is probably a better place to do this, but right now the
3960    Cocoa side does this in s/darwin.h and we cannot parallel this
3961    exactly since GNUstep is multi-OS.  */
3962 #if defined HAVE_NS && defined NS_IMPL_GNUSTEP
3963 #  define SYSTEM_PURESIZE_EXTRA 30000
3964 #endif
3965
3966 #ifdef emacs /* Don't do this for lib-src.  */
3967 /* Tell regex.c to use a type compatible with Emacs.  */
3968 #define RE_TRANSLATE_TYPE Lisp_Object
3969 #define RE_TRANSLATE(TBL, C) CHAR_TABLE_TRANSLATE (TBL, C)
3970 #ifdef make_number
3971 /* If make_number is a macro, use it.  */
3972 #define RE_TRANSLATE_P(TBL) (!EQ (TBL, make_number (0)))
3973 #else
3974 /* If make_number is a function, avoid it.  */
3975 #define RE_TRANSLATE_P(TBL) (!(INTEGERP (TBL) && XINT (TBL) == 0))
3976 #endif
3977 #endif
3978
3979 #include <string.h>
3980 #include <stdlib.h>
3981
3982 #if __GNUC__ >= 3  /* On GCC 3.0 we might get a warning.  */
3983 #define NO_INLINE __attribute__((noinline))
3984 #else
3985 #define NO_INLINE
3986 #endif
3987
3988 #if (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 1))
3989 #define EXTERNALLY_VISIBLE __attribute__((externally_visible))
3990 #else
3991 #define EXTERNALLY_VISIBLE
3992 #endif
3993
3994 #if __GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 7)
3995 # define ATTRIBUTE_FORMAT(spec) __attribute__ ((__format__ spec))
3996 #else
3997 # define ATTRIBUTE_FORMAT(spec) /* empty */
3998 #endif
3999
4000 #if __GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 4)
4001 # define ATTRIBUTE_FORMAT_PRINTF(formatstring_parameter, first_argument) \
4002    ATTRIBUTE_FORMAT ((__gnu_printf__, formatstring_parameter, first_argument))
4003 #else
4004 # define ATTRIBUTE_FORMAT_PRINTF(formatstring_parameter, first_argument) \
4005    ATTRIBUTE_FORMAT ((__printf__, formatstring_parameter, first_argument))
4006 #endif
4007
4008 #define ATTRIBUTE_CONST _GL_ATTRIBUTE_CONST
4009
4010 /* Some versions of GNU/Linux define noinline in their headers.  */
4011 #ifdef noinline
4012 #undef noinline
4013 #endif
4014
4015 /* These won't be used automatically yet.  We also need to know, at least,
4016    that the stack is continuous.  */
4017 #ifdef __GNUC__
4018 #  ifndef GC_SETJMP_WORKS
4019   /* GC_SETJMP_WORKS is nearly always appropriate for GCC.  */
4020 #    define GC_SETJMP_WORKS 1
4021 #  endif
4022 #endif
4023
4024 #endif /* EMACS_CONFIG_H */
4025
4026 /*
4027 Local Variables:
4028 mode: c
4029 End:
4030 */
4031 ])dnl
4032
4033 #### Report on what we decided to do.
4034 #### Report GTK as a toolkit, even if it doesn't use Xt.
4035 #### It makes printing result more understandable as using GTK sets
4036 #### toolkit_scroll_bars to yes by default.
4037 if test "${HAVE_GTK}" = "yes"; then
4038   USE_X_TOOLKIT=GTK
4039 fi
4040
4041 echo "
4042 Configured for \`${canonical}'.
4043
4044   Where should the build process find the source code?    ${srcdir}
4045   What operating system file should Emacs use?            ${opsysfile-none}
4046   What compiler should emacs be built with?               ${CC} ${CFLAGS}
4047   Should Emacs use the GNU version of malloc?             ${GNU_MALLOC}${GNU_MALLOC_reason}
4048   Should Emacs use a relocating allocator for buffers?    ${REL_ALLOC}
4049   Should Emacs use mmap(2) for buffer allocation?         $use_mmap_for_buffers
4050   What window system should Emacs use?                    ${window_system}
4051   What toolkit should Emacs use?                          ${USE_X_TOOLKIT}"
4052
4053 if test -n "${x_includes}"; then
4054 echo "  Where do we find X Windows header files?                ${x_includes}"
4055 else
4056 echo "  Where do we find X Windows header files?                Standard dirs"
4057 fi
4058 if test -n "${x_libraries}"; then
4059 echo "  Where do we find X Windows libraries?                   ${x_libraries}"
4060 else
4061 echo "  Where do we find X Windows libraries?                   Standard dirs"
4062 fi
4063
4064 echo "  Does Emacs use -lXaw3d?                                 ${HAVE_XAW3D}"
4065 echo "  Does Emacs use -lXpm?                                   ${HAVE_XPM}"
4066 echo "  Does Emacs use -ljpeg?                                  ${HAVE_JPEG}"
4067 echo "  Does Emacs use -ltiff?                                  ${HAVE_TIFF}"
4068 echo "  Does Emacs use a gif library?                           ${HAVE_GIF} $LIBGIF"
4069 echo "  Does Emacs use -lpng?                                   ${HAVE_PNG}"
4070 echo "  Does Emacs use -lrsvg-2?                                ${HAVE_RSVG}"
4071 echo "  Does Emacs use imagemagick?                             ${HAVE_IMAGEMAGICK}"
4072
4073 echo "  Does Emacs use -lgpm?                                   ${HAVE_GPM}"
4074 echo "  Does Emacs use -ldbus?                                  ${HAVE_DBUS}"
4075 echo "  Does Emacs use -lgconf?                                 ${HAVE_GCONF}"
4076 echo "  Does Emacs use GSettings?                               ${HAVE_GSETTINGS}"
4077 echo "  Does Emacs use -lselinux?                               ${HAVE_LIBSELINUX}"
4078 echo "  Does Emacs use -lgnutls?                                ${HAVE_GNUTLS}"
4079 echo "  Does Emacs use -lxml2?                                  ${HAVE_LIBXML2}"
4080
4081 echo "  Does Emacs use -lfreetype?                              ${HAVE_FREETYPE}"
4082 echo "  Does Emacs use -lm17n-flt?                              ${HAVE_M17N_FLT}"
4083 echo "  Does Emacs use -lotf?                                   ${HAVE_LIBOTF}"
4084 echo "  Does Emacs use -lxft?                                   ${HAVE_XFT}"
4085
4086 echo "  Does Emacs use toolkit scroll bars?                     ${USE_TOOLKIT_SCROLL_BARS}"
4087 echo
4088
4089 if test -n "${EMACSDATA}"; then
4090    echo "  Environment variable EMACSDATA set to:                  $EMACSDATA"
4091 fi
4092 if test -n "${EMACSDOC}"; then
4093    echo "  Environment variable EMACSDOC set to:                   $EMACSDOC"
4094 fi
4095
4096 echo
4097
4098 if test "$HAVE_NS" = "yes"; then
4099    echo
4100    echo "You must run \"${MAKE-make} install\" in order to test the built application.
4101 The installed application will go to nextstep/Emacs.app and can be
4102 run or moved from there."
4103    if test "$EN_NS_SELF_CONTAINED" = "yes"; then
4104       echo "The application will be fully self-contained."
4105     else
4106       echo "The lisp resources for the application will be installed under ${prefix}.
4107 You may need to run \"${MAKE-make} install\" with sudo.  The application will fail
4108 to run if these resources are not installed."
4109    fi
4110    echo
4111 fi
4112
4113 if test "${opsys}" = "cygwin"; then
4114   case `uname -r` in
4115     1.5.*) AC_MSG_WARN([[building Emacs on Cygwin 1.5 is not supported.]])
4116            echo
4117            ;;
4118   esac
4119 fi
4120
4121 # Remove any trailing slashes in these variables.
4122 [test "${prefix}" != NONE &&
4123   prefix=`echo "${prefix}" | sed 's,\([^/]\)/*$,\1,'`
4124 test "${exec_prefix}" != NONE &&
4125   exec_prefix=`echo "${exec_prefix}" | sed 's,\([^/]\)/*$,\1,'`]
4126
4127 dnl Obviously there is duplication here wrt $SUBDIR_MAKEFILES.
4128 dnl You _can_ use that variable in AC_CONFIG_FILES, so long as any directory
4129 dnl using automake (ie lib/) is explicitly listed and not "hidden" in a variable
4130 dnl (else you get "no `Makefile.am' found for any configure output").
4131 dnl This will work, but you get a config.status that is not quite right
4132 dnl (see http://lists.gnu.org/archive/html/bug-autoconf/2008-08/msg00028.html).
4133 dnl That doesn't have any obvious consequences for Emacs, but on the whole
4134 dnl it seems better to just live with the duplication.
4135 SUBDIR_MAKEFILES="lib/Makefile lib-src/Makefile oldXMenu/Makefile doc/emacs/Makefile doc/misc/Makefile doc/lispintro/Makefile doc/lispref/Makefile src/Makefile lwlib/Makefile lisp/Makefile leim/Makefile"
4136
4137 AC_CONFIG_FILES([Makefile lib/Makefile lib-src/Makefile oldXMenu/Makefile \
4138        doc/emacs/Makefile doc/misc/Makefile doc/lispintro/Makefile \
4139        doc/lispref/Makefile src/Makefile lwlib/Makefile lisp/Makefile \
4140        leim/Makefile])
4141
4142 dnl test/ is not present in release tarfiles.
4143 opt_makefile=test/automated/Makefile
4144
4145 if test -f $srcdir/${opt_makefile}.in; then
4146   SUBDIR_MAKEFILES="$SUBDIR_MAKEFILES $opt_makefile"
4147   dnl Again, it's best not to use a variable.  Though you can add
4148   dnl ", [], [opt_makefile='$opt_makefile']" and it should work.
4149   AC_CONFIG_FILES([test/automated/Makefile])
4150 fi
4151
4152
4153 dnl admin/ may or may not be present.
4154 opt_makefile=admin/unidata/Makefile
4155
4156 if test -f $srcdir/${opt_makefile}.in; then
4157   SUBDIR_MAKEFILES="$SUBDIR_MAKEFILES $opt_makefile"
4158   AC_CONFIG_FILES([admin/unidata/Makefile])
4159 fi
4160
4161
4162 SUBDIR_MAKEFILES_IN=`echo " ${SUBDIR_MAKEFILES}" | sed -e 's| | $(srcdir)/|g' -e 's|Makefile|Makefile.in|g'`
4163
4164 AC_SUBST(SUBDIR_MAKEFILES_IN)
4165
4166 dnl Make the necessary directories, if they don't exist.
4167 AC_CONFIG_COMMANDS([mkdirs], [
4168 for dir in etc lisp ; do
4169   test -d ${dir} || mkdir ${dir}
4170 done
4171 ])
4172
4173 dnl You might wonder (I did) why epaths.h is generated by running make,
4174 dnl rather than just letting configure generate it from epaths.in.
4175 dnl One reason is that the various paths are not fully expanded (see above);
4176 dnl eg gamedir=${prefix}/var/games/emacs.
4177 dnl Secondly, the GNU Coding standards require that one should be able
4178 dnl to run `make prefix=/some/where/else' and override the values set
4179 dnl by configure.  This also explains the `move-if-change' test and
4180 dnl the use of force in the `epaths-force' rule in Makefile.in.
4181 AC_CONFIG_COMMANDS([epaths], [
4182 echo creating src/epaths.h
4183 ${MAKE-make} epaths-force
4184 ], [GCC="$GCC" CPPFLAGS="$CPPFLAGS"])
4185
4186 AC_CONFIG_COMMANDS([gdbinit], [
4187 if test ! -f src/.gdbinit && test -f $srcdir/src/.gdbinit; then
4188   echo creating src/.gdbinit
4189   echo source $srcdir/src/.gdbinit > src/.gdbinit
4190 fi
4191 ])
4192
4193 AC_OUTPUT