configure.ac

   1 dnl   configuration script for Guile
   2 dnl   Process this file with autoconf to produce configure.
   3 dnl
   4
   5 define(GUILE_CONFIGURE_COPYRIGHT,[[
   6
   7 Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006,
   8   2007, 2008, 2009, 2010, 2011, 2012, 2013 Free Software Foundation, Inc.
   9
  10 This file is part of GUILE
  11
  12 GUILE is free software; you can redistribute it and/or modify it under
  13 the terms of the GNU Lesser General Public License as published by the
  14 Free Software Foundation; either version 3, or (at your option) any
  15 later version.
  16
  17 GUILE is distributed in the hope that it will be useful, but WITHOUT
  18 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  19 FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public
  20 License for more details.
  21
  22 You should have received a copy of the GNU Lesser General Public
  23 License along with GUILE; see the file COPYING.LESSER.  If not, write
  24 to the Free Software Foundation, Inc., 51 Franklin Street, Fifth
  25 Floor, Boston, MA 02110-1301, USA.
  26
  27 ]])
  28
  29 AC_PREREQ(2.61)
  30
  31 AC_INIT([GNU Guile],
  32         m4_esyscmd([build-aux/git-version-gen --match v2.0.\* .tarball-version]),
  33         [bug-guile@gnu.org])
  34 AC_CONFIG_AUX_DIR([build-aux])
  35 AC_CONFIG_MACRO_DIR([m4])
  36 AC_CONFIG_SRCDIR(GUILE-VERSION)
  37
  38 dnl Use `serial-tests' so the output `check-guile' is not hidden
  39 dnl (`parallel-tests' is the default in Automake 1.13.)
  40 dnl `serial-tests' was introduced in Automake 1.12.
  41 AM_INIT_AUTOMAKE([1.12 gnu no-define -Wall -Wno-override \
  42   serial-tests color-tests dist-xz])
  43 m4_ifdef([AM_SILENT_RULES], [AM_SILENT_RULES([yes])], [AC_SUBST([AM_DEFAULT_VERBOSITY],1)])
  44
  45 AC_COPYRIGHT(GUILE_CONFIGURE_COPYRIGHT)
  46 AC_CONFIG_SRCDIR([GUILE-VERSION])
  47
  48 . $srcdir/GUILE-VERSION
  49 GUILE_VERSION="$PACKAGE_VERSION"
  50
  51 AC_CONFIG_HEADERS([config.h])
  52 AH_TOP(/*GUILE_CONFIGURE_COPYRIGHT*/)
  53
  54 #--------------------------------------------------------------------
  55
  56 AC_LANG([C])
  57
  58 dnl Some more checks for Win32
  59 AC_CANONICAL_HOST
  60
  61 AC_LIBTOOL_WIN32_DLL
  62
  63 AC_PROG_INSTALL
  64 AC_PROG_CC
  65 gl_EARLY
  66 AC_PROG_CPP
  67 AC_PROG_SED
  68 AC_PROG_AWK
  69 AC_PROG_LN_S
  70 AM_PROG_AR
  71
  72 dnl Gnulib.
  73 gl_INIT
  74
  75 AC_PROG_CC_C89
  76
  77 # for per-target cflags in the libguile subdir
  78 AM_PROG_CC_C_O
  79
  80 AC_LIBTOOL_DLOPEN
  81 AC_PROG_LIBTOOL
  82
  83 AM_CONDITIONAL([HAVE_SHARED_LIBRARIES], [test "x$enable_shared" = "xyes"])
  84
  85 dnl Check for libltdl.
  86 AC_LIB_HAVE_LINKFLAGS([ltdl], [], [#include <ltdl.h>],
  87   [lt_dlopenext ("foo");])
  88 if test "x$HAVE_LIBLTDL" != "xyes"; then
  89   AC_MSG_ERROR([GNU libltdl (Libtool) not found, see README.])
  90 fi
  91
  92 AC_CHECK_PROG(have_makeinfo, makeinfo, yes, no)
  93 AM_CONDITIONAL(HAVE_MAKEINFO, test "$have_makeinfo" = yes)
  94
  95 AM_PATH_LISPDIR
  96
  97 AC_DEFINE_UNQUOTED([HOST_TYPE], ["$host"],
  98   [Define to the host's GNU triplet.])
  99
 100 #--------------------------------------------------------------------
 101 #
 102 # User options (after above tests that may set default CFLAGS etc.)
 103 #
 104 #--------------------------------------------------------------------
 105
 106 GUILE_ERROR_ON_WARNING="no"
 107
 108 AC_ARG_ENABLE(error-on-warning,
 109   [  --enable-error-on-warning    treat compile warnings as errors],
 110   [case "${enableval}" in
 111      yes | y) GUILE_ERROR_ON_WARNING="yes" ;;
 112      no | n)  GUILE_ERROR_ON_WARNING="no" ;;
 113      *) AC_MSG_ERROR(bad value ${enableval} for --enable-error-on-warning) ;;
 114    esac])
 115
 116 AC_ARG_ENABLE(debug-malloc,
 117   [  --enable-debug-malloc   include malloc debugging code],
 118   if test "$enable_debug_malloc" = y || test "$enable_debug_malloc" = yes; then
 119     AC_DEFINE([GUILE_DEBUG_MALLOC], 1,
 120       [Define this if you want to debug scm_must_malloc/realloc/free calls.])
 121   fi)
 122
 123 SCM_I_GSC_GUILE_DEBUG=0
 124 AC_ARG_ENABLE(guile-debug,
 125   [AS_HELP_STRING([--enable-guile-debug],
 126                   [include internal debugging functions])],
 127   if test "$enable_guile_debug" = y || test "$enable_guile_debug" = yes; then
 128     SCM_I_GSC_GUILE_DEBUG=1
 129   fi)
 130
 131 AC_ARG_ENABLE(posix,
 132   [  --disable-posix         omit non-essential POSIX interfaces],,
 133   enable_posix=yes)
 134
 135 AC_ARG_ENABLE(networking,
 136   [  --disable-networking    omit networking interfaces],,
 137   enable_networking=yes)
 138
 139 AC_ARG_ENABLE(regex,
 140   [  --disable-regex         omit regular expression interfaces],,
 141   enable_regex=yes)
 142
 143 AC_ARG_ENABLE([deprecated],
 144   AS_HELP_STRING([--disable-deprecated],[omit deprecated features]))
 145
 146 if test "$enable_deprecated" = no; then
 147   SCM_I_GSC_ENABLE_DEPRECATED=0
 148   warn_default=no
 149 else
 150   if test "$enable_deprecated" = yes || test "$enable_deprecated" = ""; then
 151     warn_default=summary
 152   elif test "$enable_deprecated" = shutup; then
 153     warn_default=no
 154   else
 155     warn_default=$enable_deprecated
 156   fi
 157   SCM_I_GSC_ENABLE_DEPRECATED=1
 158 fi
 159 AC_DEFINE_UNQUOTED([SCM_WARN_DEPRECATED_DEFAULT], "$warn_default",
 160 [Define this to control the default warning level for deprecated features.])
 161
 162 dnl  Added the following configure option in January 2008 following
 163 dnl  investigation of problems with "64" system and library calls on
 164 dnl  Darwin (MacOS X).  The libguile code (_scm.h) assumes that if a
 165 dnl  system has stat64, it will have all the other 64 APIs too; but on
 166 dnl  Darwin, stat64 is there but other APIs are missing.
 167 dnl
 168 dnl  It also appears, from the Darwin docs, that most system call APIs
 169 dnl  there (i.e. the traditional ones _without_ "64" in their names) have
 170 dnl  been 64-bit-capable for a long time now, so it isn't necessary to
 171 dnl  use "64" versions anyway.  For example, Darwin's off_t is 64-bit.
 172 dnl
 173 dnl  A similar problem has been reported for HP-UX:
 174 dnl  http://www.nabble.com/Building-guile-1.8.2-on-hpux-td13106681.html
 175 dnl
 176 dnl  Therefore, and also because a Guile without LARGEFILE64 support is
 177 dnl  better than no Guile at all, we provide this option to suppress
 178 dnl  trying to use "64" calls.
 179 dnl
 180 dnl  It may be that for some 64-bit function on Darwin/HP-UX we do need
 181 dnl  to use a "64" call, and hence that by using --without-64-calls we're
 182 dnl  missing out on that.  If so, someone can work on that in the future.
 183 dnl  For now, --without-64-calls allows Guile to build on OSs where it
 184 dnl  wasn't building before.
 185 AC_MSG_CHECKING([whether to use system and library "64" calls])
 186 AC_ARG_WITH([64-calls],
 187   AS_HELP_STRING([--without-64-calls],
 188                  [don't attempt to use system and library calls with "64" in their names]),
 189   [use_64_calls=$withval],
 190   [use_64_calls=yes
 191    case $host in
 192      *-apple-darwin* )
 193        use_64_calls=no
 194        ;;
 195      powerpc-ibm-aix* )
 196        use_64_calls=no
 197        ;;
 198    esac])
 199 AC_MSG_RESULT($use_64_calls)
 200 case "$use_64_calls" in
 201   y* )
 202     AC_DEFINE([GUILE_USE_64_CALLS], 1,
 203       [Define to 1 in order to try to use "64" versions of system and library calls.])
 204     ;;
 205 esac
 206
 207 #--------------------------------------------------------------------
 208
 209 dnl Check for dynamic linking
 210
 211 use_modules=yes
 212 AC_ARG_WITH(modules,
 213 [  --with-modules[=FILES]  Add support for dynamic modules],
 214 use_modules="$withval")
 215 test -z "$use_modules" && use_modules=yes
 216 DLPREOPEN=
 217 if test "$use_modules" != no; then
 218   if test "$use_modules" = yes; then
 219     DLPREOPEN="-dlpreopen force"
 220   else
 221     DLPREOPEN="-export-dynamic"
 222     for module in $use_modules; do
 223       DLPREOPEN="$DLPREOPEN -dlopen $module"
 224     done
 225   fi
 226 fi
 227
 228 dnl files which are destined for separate modules.
 229
 230 if test "$use_modules" != no; then
 231    AC_LIBOBJ([dynl])
 232    AC_DEFINE([HAVE_MODULES], 1,
 233      [Define this if you want support for dynamically loaded modules in Guile.])
 234 fi
 235
 236 if test "$enable_posix" = yes; then
 237    AC_LIBOBJ([posix])
 238    AC_DEFINE([HAVE_POSIX], 1,
 239      [Define this if you want support for non-essential POSIX system calls in Guile.])
 240 fi
 241
 242 if test "$enable_networking" = yes; then
 243    AC_LIBOBJ([net_db])
 244    AC_LIBOBJ([socket])
 245    AC_DEFINE([HAVE_NETWORKING], 1,
 246      [Define this if you want support for networking in Guile.])
 247 fi
 248
 249 if test "$enable_debug_malloc" = yes; then
 250    AC_LIBOBJ([debug-malloc])
 251 fi
 252
 253 AC_CHECK_LIB(uca, __uc_get_ar_bsp)
 254
 255 AC_C_CONST
 256
 257 # "volatile" is used in a couple of tests below.
 258 AC_C_VOLATILE
 259
 260 AC_C_INLINE
 261 if test "$ac_cv_c_inline" != no; then
 262   SCM_I_GSC_C_INLINE="\"${ac_cv_c_inline}\""
 263 else
 264   SCM_I_GSC_C_INLINE=NULL
 265 fi
 266 AC_CHECK_LIB(uca, __uc_get_ar_bsp)
 267
 268 AC_C_BIGENDIAN
 269
 270 AC_C_LABELS_AS_VALUES
 271
 272 AC_CHECK_SIZEOF(char)
 273 AC_CHECK_SIZEOF(unsigned char)
 274 AC_CHECK_SIZEOF(short)
 275 AC_CHECK_SIZEOF(unsigned short)
 276 AC_CHECK_SIZEOF(int)
 277 AC_CHECK_SIZEOF(unsigned int)
 278 AC_CHECK_SIZEOF(long)
 279 AC_CHECK_SIZEOF(unsigned long)
 280 AC_CHECK_SIZEOF(size_t)
 281 AC_CHECK_SIZEOF(long long)
 282 AC_CHECK_SIZEOF(unsigned long long)
 283 AC_CHECK_SIZEOF(__int64)
 284 AC_CHECK_SIZEOF(unsigned __int64)
 285 AC_CHECK_SIZEOF(void *)
 286 AC_CHECK_SIZEOF(intptr_t)
 287 AC_CHECK_SIZEOF(uintptr_t)
 288 AC_CHECK_SIZEOF(ptrdiff_t)
 289 AC_CHECK_SIZEOF(size_t)
 290 AC_CHECK_SIZEOF(off_t)
 291
 292 if test "$ac_cv_sizeof_long" -gt "$ac_cv_sizeof_void_p"; then
 293   AC_MSG_ERROR(long does not fit into a void*)
 294 fi
 295
 296 if test "$ac_cv_sizeof_ptrdiff_t" -ne 0; then
 297   SCM_I_GSC_T_PTRDIFF='"ptrdiff_t"'
 298 else
 299   SCM_I_GSC_T_PTRDIFF='"long"'
 300 fi
 301 AC_SUBST([SCM_I_GSC_T_PTRDIFF])
 302
 303 AC_CHECK_HEADERS([stdint.h])
 304 AC_CHECK_HEADERS([inttypes.h])
 305
 306 AC_CHECK_SIZEOF(intmax_t)
 307
 308 SCM_I_GSC_NEEDS_STDINT_H=0
 309 SCM_I_GSC_NEEDS_INTTYPES_H=0
 310
 311 ### intptr and uintptr (try not to use inttypes if we don't have to)
 312 if test "$ac_cv_header_inttypes_h" = yes; then
 313   if test "$ac_cv_sizeof_intptr_t" -eq 0; then
 314     AC_CHECK_SIZEOF([intptr_t],,[#include <inttypes.h>
 315 #include <stdio.h>])
 316     if test "$ac_cv_sizeof_intptr_t" -ne 0; then
 317       SCM_I_GSC_NEEDS_INTTYPES_H=1
 318     fi
 319   fi
 320   if test "$ac_cv_sizeof_uintptr_t" -eq 0; then
 321     AC_CHECK_SIZEOF([uintptr_t],,[#include <inttypes.h>
 322 #include <stdio.h>])
 323     if test "$ac_cv_sizeof_uintptr_t" -ne 0; then
 324       SCM_I_GSC_NEEDS_INTTYPES_H=1
 325     fi
 326   fi
 327 fi
 328
 329 ### See what's provided by stdint.h
 330 if test "$ac_cv_header_stdint_h" = yes; then
 331    AC_CHECK_TYPE([int8_t],[scm_stdint_has_int8=1],,[#include <stdint.h>])
 332    AC_CHECK_TYPE([uint8_t],[scm_stdint_has_uint8=1],,[#include <stdint.h>])
 333    AC_CHECK_TYPE([int16_t],[scm_stdint_has_int16=1],,[#include <stdint.h>])
 334    AC_CHECK_TYPE([uint16_t],[scm_stdint_has_uint16=1],,[#include <stdint.h>])
 335    AC_CHECK_TYPE([int32_t],[scm_stdint_has_int32=1],,[#include <stdint.h>])
 336    AC_CHECK_TYPE([uint32_t],[scm_stdint_has_uint32=1],,[#include <stdint.h>])
 337    AC_CHECK_TYPE([int64_t],[scm_stdint_has_int64=1],,[#include <stdint.h>])
 338    AC_CHECK_TYPE([uint64_t],[scm_stdint_has_uint64=1],,[#include <stdint.h>])
 339    AC_CHECK_TYPE([intmax_t],[scm_stdint_has_intmax=1],,[#include <stdint.h>])
 340    AC_CHECK_TYPE([uintmax_t],[scm_stdint_has_uintmax=1],,[#include <stdint.h>])
 341    AC_CHECK_TYPE([intptr_t],[scm_stdint_has_intptr=1],,[#include <stdint.h>])
 342    AC_CHECK_TYPE([uintptr_t],[scm_stdint_has_uintptr=1],,[#include <stdint.h>])
 343 fi
 344
 345 # so we don't get confused by the cache (wish there was a better way
 346 # to check particular headers for the same type...)
 347
 348 unset ac_cv_type_int8_t
 349 unset ac_cv_type_uint8_t
 350 unset ac_cv_type_int16_t
 351 unset ac_cv_type_uint16_t
 352 unset ac_cv_type_int32_t
 353 unset ac_cv_type_uint32_t
 354 unset ac_cv_type_int64_t
 355 unset ac_cv_type_uint64_t
 356 unset ac_cv_type_intmax_t
 357 unset ac_cv_type_uintmax_t
 358
 359 ### See what's provided by inttypes.h
 360 if test "$ac_cv_header_inttypes_h" = yes; then
 361   AC_CHECK_TYPE([int8_t],[scm_inttypes_has_int8=1],,[#include <inttypes.h>])
 362   AC_CHECK_TYPE([uint8_t],[scm_inttypes_has_uint8=1],,[#include <inttypes.h>])
 363   AC_CHECK_TYPE([int16_t],[scm_inttypes_has_int16=1],,[#include <inttypes.h>])
 364   AC_CHECK_TYPE([uint16_t],[scm_inttypes_has_uint16=1],,[#include <inttypes.h>])
 365   AC_CHECK_TYPE([int32_t],[scm_inttypes_has_int32=1],,[#include <inttypes.h>])
 366   AC_CHECK_TYPE([uint32_t],[scm_inttypes_has_uint32=1],,[#include <inttypes.h>])
 367   AC_CHECK_TYPE([int64_t],[scm_inttypes_has_int64=1],,[#include <inttypes.h>])
 368   AC_CHECK_TYPE([uint64_t],[scm_inttypes_has_uint64=1],,[#include <inttypes.h>])
 369   AC_CHECK_TYPE([intmax_t],[scm_inttypes_has_intmax=1],,[#include <inttypes.h>])
 370   AC_CHECK_TYPE([uintmax_t],[scm_inttypes_has_uintmax=1],,[#include <inttypes.h>])
 371   AC_CHECK_TYPE([intptr_t],[scm_inttypes_has_intptr=1],,[#include <inttypes.h>])
 372   AC_CHECK_TYPE([uintptr_t],[scm_inttypes_has_uintptr=1],,[#include <inttypes.h>])
 373 fi
 374
 375 # Try hard to find definitions for some required scm_t_*int* types.
 376
 377 ### Required type scm_t_int8
 378 if test "$scm_stdint_has_int8"; then
 379   SCM_I_GSC_T_INT8='"int8_t"'
 380   SCM_I_GSC_NEEDS_STDINT_H=1
 381 elif test "$scm_inttypes_has_int8"; then
 382   SCM_I_GSC_T_INT8='"int8_t"'
 383   SCM_I_GSC_NEEDS_INTTYPES_H=1
 384 elif test "$ac_cv_sizeof_char" -eq 1; then
 385   SCM_I_GSC_T_INT8='"signed char"'
 386 else
 387   AC_MSG_ERROR([Can't find appropriate type for scm_t_int8.])
 388 fi
 389 AC_SUBST([SCM_I_GSC_T_INT8])
 390
 391 ### Required type scm_t_uint8
 392 if test "$scm_stdint_has_uint8"; then
 393   SCM_I_GSC_T_UINT8='"uint8_t"'
 394   SCM_I_GSC_NEEDS_STDINT_H=1
 395 elif test "$scm_inttypes_has_uint8"; then
 396   SCM_I_GSC_T_UINT8='"uint8_t"'
 397   SCM_I_GSC_NEEDS_INTTYPES_H=1
 398 elif test "$ac_cv_sizeof_unsigned_char" -eq 1; then
 399   SCM_I_GSC_T_UINT8='"unsigned char"'
 400 else
 401   AC_MSG_ERROR([Can't find appropriate type for scm_t_uint8.])
 402 fi
 403 AC_SUBST([SCM_I_GSC_T_UINT8])
 404
 405 ### Required type scm_t_int16 (ANSI C says int or short might work)
 406 if test "$scm_stdint_has_int16"; then
 407   SCM_I_GSC_T_INT16='"int16_t"'
 408   SCM_I_GSC_NEEDS_STDINT_H=1
 409 elif test "$scm_inttypes_has_int16"; then
 410   SCM_I_GSC_T_INT16='"int16_t"'
 411   SCM_I_GSC_NEEDS_INTTYPES_H=1
 412 elif test "$ac_cv_sizeof_int" -eq 2; then
 413   SCM_I_GSC_T_INT16='"int"'
 414 elif test "$ac_cv_sizeof_short" -eq 2; then
 415   SCM_I_GSC_T_INT16='"short"'
 416 else
 417   AC_MSG_ERROR([Can't find appropriate type for scm_t_int16.])
 418 fi
 419 AC_SUBST([SCM_I_GSC_T_INT16])
 420
 421 ### Required type scm_t_uint16 (ANSI C says int or short might work)
 422 if test "$scm_stdint_has_uint16"; then
 423   SCM_I_GSC_T_UINT16='"uint16_t"'
 424   SCM_I_GSC_NEEDS_STDINT_H=1
 425 elif test "$scm_inttypes_has_uint16"; then
 426   SCM_I_GSC_T_UINT16='"uint16_t"'
 427   SCM_I_GSC_NEEDS_INTTYPES_H=1
 428 elif test "$ac_cv_sizeof_unsigned_int" -eq 2; then
 429   SCM_I_GSC_T_UINT16='"unsigned int"'
 430 elif test "$ac_cv_sizeof_unsigned_short" -eq 2; then
 431   SCM_I_GSC_T_UINT16='"unsigned short"'
 432 else
 433   AC_MSG_ERROR([Can't find appropriate type for scm_t_uint16.])
 434 fi
 435 AC_SUBST([SCM_I_GSC_T_UINT16])
 436
 437
 438 ### Required type scm_t_int32 (ANSI C says int, short, or long might work)
 439 if test "$scm_stdint_has_int32"; then
 440   SCM_I_GSC_T_INT32='"int32_t"'
 441   SCM_I_GSC_NEEDS_STDINT_H=1
 442 elif test "$scm_inttypes_has_int32"; then
 443   SCM_I_GSC_T_INT32='"int32_t"'
 444   SCM_I_GSC_NEEDS_INTTYPES_H=1
 445 elif test "$ac_cv_sizeof_int" -eq 4; then
 446   SCM_I_GSC_T_INT32='"int"'
 447 elif test "$ac_cv_sizeof_long" -eq 4; then
 448   SCM_I_GSC_T_INT32='"long"'
 449 elif test "$ac_cv_sizeof_short" -eq 4; then
 450   SCM_I_GSC_T_INT32='"short"'
 451 else
 452   AC_MSG_ERROR([Can't find appropriate type for scm_t_int32.])
 453 fi
 454 AC_SUBST([SCM_I_GSC_T_INT32])
 455
 456 ### Required type scm_t_uint32 (ANSI C says int, short, or long might work)
 457 if test "$scm_stdint_has_uint32"; then
 458   SCM_I_GSC_T_UINT32='"uint32_t"'
 459   SCM_I_GSC_NEEDS_STDINT_H=1
 460 elif test "$scm_inttypes_has_uint32"; then
 461   SCM_I_GSC_T_UINT32='"uint32_t"'
 462   SCM_I_GSC_NEEDS_INTTYPES_H=1
 463 elif test "$ac_cv_sizeof_unsigned_int" -eq 4; then
 464   SCM_I_GSC_T_UINT32='"unsigned int"'
 465 elif test "$ac_cv_sizeof_unsigned_long" -eq 4; then
 466   SCM_I_GSC_T_UINT32='"unsigned long"'
 467 elif test "$ac_cv_sizeof_unsigned_short" -eq 4; then
 468   SCM_I_GSC_T_UINT32='"unsigned short"'
 469 else
 470   AC_MSG_ERROR([Can't find appropriate type for scm_t_uint32.])
 471 fi
 472 AC_SUBST([SCM_I_GSC_T_UINT32])
 473
 474 ### Optional type scm_t_int64 (ANSI C says int, short, or long might work)
 475 ### Also try 'long long' and '__int64' if we have it.
 476 SCM_I_GSC_T_INT64=0
 477 if test "$scm_stdint_has_int64"; then
 478   SCM_I_GSC_T_INT64='"int64_t"'
 479   SCM_I_GSC_NEEDS_STDINT_H=1
 480 elif test "$scm_inttypes_has_int64"; then
 481   SCM_I_GSC_T_INT64='"int64_t"'
 482   SCM_I_GSC_NEEDS_INTTYPES_H=1
 483 elif test "$ac_cv_sizeof_int" -eq 8; then
 484   SCM_I_GSC_T_INT64='"int"'
 485 elif test "$ac_cv_sizeof_long" -eq 8; then
 486   SCM_I_GSC_T_INT64='"long"'
 487 elif test "$ac_cv_sizeof_short" -eq 8; then
 488   SCM_I_GSC_T_INT64='"short"'
 489 elif test "$ac_cv_sizeof_long_long" -eq 8; then
 490   SCM_I_GSC_T_INT64='"long long"'
 491 elif test "$ac_cv_sizeof___int64" -eq 8; then
 492   SCM_I_GSC_T_INT64='"__int64"'
 493 else
 494   AC_MSG_ERROR([Can't find appropriate type for scm_t_int64.])
 495 fi
 496 AC_SUBST([SCM_I_GSC_T_INT64])
 497
 498
 499 ### Optional type scm_t_uint64 (ANSI C says int, short, or long might work)
 500 ### Also try 'long long' and '__int64' if we have it.
 501 SCM_I_GSC_T_UINT64=0
 502 if test "$scm_stdint_has_uint64"; then
 503   SCM_I_GSC_T_UINT64='"uint64_t"'
 504   SCM_I_GSC_NEEDS_STDINT_H=1
 505 elif test "$scm_inttypes_has_uint64"; then
 506   SCM_I_GSC_T_UINT64='"uint64_t"'
 507   SCM_I_GSC_NEEDS_INTTYPES_H=1
 508 elif test "$ac_cv_sizeof_unsigned_int" -eq 8; then
 509   SCM_I_GSC_T_UINT64='"unsigned int"'
 510 elif test "$ac_cv_sizeof_unsigned_long" -eq 8; then
 511   SCM_I_GSC_T_UINT64='"unsigned long"'
 512 elif test "$ac_cv_sizeof_unsigned_short" -eq 8; then
 513   SCM_I_GSC_T_UINT64='"unsigned short"'
 514 elif test "$ac_cv_sizeof_unsigned_long_long" -eq 8; then
 515   SCM_I_GSC_T_UINT64='"unsigned long long"'
 516 elif test "$ac_cv_sizeof_unsigned___int64" -eq 8; then
 517   SCM_I_GSC_T_UINT64='"unsigned __int64"'
 518 else
 519   AC_MSG_ERROR([Can't find appropriate type for scm_t_uint64.])
 520 fi
 521 AC_SUBST([SCM_I_GSC_T_UINT64])
 522
 523 ### Required type scm_t_intmax
 524 ###
 525 ### We try 'intmax_t', '__int64', 'long long' in this order.  When
 526 ### none of them is available, we use 'long'.
 527 ###
 528 SCM_I_GSC_T_INTMAX=0
 529 if test "$scm_stdint_has_intmax"; then
 530   SCM_I_GSC_T_INTMAX='"intmax_t"'
 531   SCM_I_GSC_NEEDS_STDINT_H=1
 532 elif test "$scm_inttypes_has_intmax"; then
 533   SCM_I_GSC_T_INTMAX='"intmax_t"'
 534   SCM_I_GSC_NEEDS_INTTYPES_H=1
 535 elif test "$ac_cv_sizeof___int64" -ne 0; then
 536   SCM_I_GSC_T_INTMAX='"__int64"'
 537 elif test "$ac_cv_sizeof_long_long" -ne 0; then
 538   SCM_I_GSC_T_INTMAX='"long long"'
 539 else
 540   SCM_I_GSC_T_INTMAX='"long"'
 541 fi
 542 AC_SUBST([SCM_I_GSC_T_INTMAX])
 543
 544 ### Required type scm_t_uintmax
 545 ###
 546 ### We try 'uintmax_t', 'unsigned __int64', 'unsigned long long' in
 547 ### this order.  When none of them is available, we use 'unsigned long'.
 548 ###
 549 SCM_I_GSC_T_UINTMAX=0
 550 if test "$scm_stdint_has_uintmax"; then
 551   SCM_I_GSC_T_UINTMAX='"uintmax_t"'
 552   SCM_I_GSC_NEEDS_STDINT_H=1
 553 elif test "$scm_inttypes_has_uintmax"; then
 554   SCM_I_GSC_T_UINTMAX='"uintmax_t"'
 555   SCM_I_GSC_NEEDS_INTTYPES_H=1
 556 elif test "$ac_cv_sizeof_unsigned___int64" -ne 0; then
 557   SCM_I_GSC_T_UINTMAX='"unsigned __int64"'
 558 elif test "$ac_cv_sizeof_unsigned_long_long" -ne 0; then
 559   SCM_I_GSC_T_UINTMAX='"unsigned long long"'
 560 else
 561   SCM_I_GSC_T_UINTMAX='"unsigned long"'
 562 fi
 563 AC_SUBST([SCM_I_GSC_T_UINTMAX])
 564
 565 ### Required type scm_t_intptr
 566 ###
 567 SCM_I_GSC_T_INTPTR=0
 568 if test "$scm_stdint_has_intptr"; then
 569   SCM_I_GSC_T_INTPTR='"intptr_t"'
 570   SCM_I_GSC_NEEDS_STDINT_H=1
 571 elif test "$scm_inttypes_has_intptr"; then
 572   SCM_I_GSC_T_INTPTR='"intptr_t"'
 573   SCM_I_GSC_NEEDS_INTTYPES_H=1
 574 elif test "$ac_cv_sizeof_int" = "$ac_cv_sizeof_void_p"; then
 575   SCM_I_GSC_T_INTPTR='"int"'
 576 elif test "$ac_cv_sizeof_long" = "$ac_cv_sizeof_void_p"; then
 577   SCM_I_GSC_T_INTPTR='"long"'
 578 elif test "$ac_cv_sizeof_long_long" = "$ac_cv_sizeof_void_p"; then
 579   SCM_I_GSC_T_INTPTR='"long long"'
 580 else
 581   AC_MSG_ERROR([Can't find appropriate type for `scm_t_intptr'.])
 582 fi
 583 AC_SUBST([SCM_I_GSC_T_INTPTR])
 584
 585 ### Required type scm_t_uintptr
 586 ###
 587 SCM_I_GSC_T_UINTPTR=0
 588 if test "$scm_stdint_has_uintptr"; then
 589   SCM_I_GSC_T_UINTPTR='"uintptr_t"'
 590   SCM_I_GSC_NEEDS_STDINT_H=1
 591 elif test "$scm_inttypes_has_uintptr"; then
 592   SCM_I_GSC_T_UINTPTR='"uintptr_t"'
 593   SCM_I_GSC_NEEDS_INTTYPES_H=1
 594 elif test "$ac_cv_sizeof_int" = "$ac_cv_sizeof_void_p"; then
 595   SCM_I_GSC_T_UINTPTR='"unsigned int"'
 596 elif test "$ac_cv_sizeof_long" = "$ac_cv_sizeof_void_p"; then
 597   SCM_I_GSC_T_UINTPTR='"unsigned long"'
 598 elif test "$ac_cv_sizeof_long_long" = "$ac_cv_sizeof_void_p"; then
 599   SCM_I_GSC_T_UINTPTR='"unsigned long long"'
 600 else
 601   AC_MSG_ERROR([Can't find appropriate type for `scm_t_uintptr'.])
 602 fi
 603 AC_SUBST([SCM_I_GSC_T_UINTPTR])
 604
 605
 606 AC_SUBST([SCM_I_GSC_NEEDS_STDINT_H])
 607 AC_SUBST([SCM_I_GSC_NEEDS_INTTYPES_H])
 608
 609 AC_HEADER_STDC
 610 AC_HEADER_TIME
 611 AC_HEADER_SYS_WAIT
 612 AC_HEADER_DIRENT
 613
 614 # Reason for checking:
 615 #
 616 #   HP-UX 11.11 (at least) doesn't provide `struct dirent64', even
 617 #   with `_LARGEFILE64_SOURCE', so check whether it's available.
 618 #
 619 AC_CHECK_MEMBER([struct dirent64.d_name],
 620   [SCM_I_GSC_HAVE_STRUCT_DIRENT64=1], [SCM_I_GSC_HAVE_STRUCT_DIRENT64=0],
 621   [ #ifndef _LARGEFILE64_SOURCE
 622     # define _LARGEFILE64_SOURCE
 623     #endif
 624
 625     /* Per Autoconf manual.  */
 626     #include <sys/types.h>
 627     #ifdef HAVE_DIRENT_H
 628     # include <dirent.h>
 629     #else
 630     # define dirent direct
 631     # ifdef HAVE_SYS_NDIR_H
 632     #  include <sys/ndir.h>
 633     # endif
 634     # ifdef HAVE_SYS_DIR_H
 635     #  include <sys/dir.h>
 636     # endif
 637     # ifdef HAVE_NDIR_H
 638     #  include <ndir.h>
 639     # endif
 640     #endif ])
 641 AC_SUBST([SCM_I_GSC_HAVE_STRUCT_DIRENT64])
 642
 643 # Reasons for testing:
 644 #   complex.h - new in C99
 645 #   fenv.h - available in C99, but not older systems
 646 #   machine/fpu.h - on Tru64 5.1b, the declaration of fesetround(3) is in
 647 #     this file instead of <fenv.h>
 648 #   process.h - mingw specific
 649 #   sched.h - missing on MinGW
 650 #   sys/sendfile.h - non-POSIX, found in glibc
 651 #
 652 AC_CHECK_HEADERS([complex.h fenv.h io.h libc.h limits.h memory.h process.h string.h \
 653 sys/dir.h sys/ioctl.h sys/select.h \
 654 sys/time.h sys/timeb.h sys/times.h sys/stdtypes.h sys/types.h \
 655 sys/utime.h time.h unistd.h utime.h pwd.h grp.h sys/utsname.h \
 656 direct.h machine/fpu.h sched.h sys/sendfile.h])
 657
 658 # "complex double" is new in C99, and "complex" is only a keyword if
 659 # <complex.h> is included
 660 AC_CHECK_TYPES(complex double,,,
 661 [#if HAVE_COMPLEX_H
 662 #include <complex.h>
 663 #endif])
 664
 665 # On MacOS X <sys/socklen.h> contains socklen_t, so must include that
 666 # when testing.
 667 AC_CHECK_TYPE(socklen_t, ,
 668   [AC_DEFINE_UNQUOTED([socklen_t], int,
 669                       [Define to `int' if <sys/socket.h> does not define.])],
 670   [#if HAVE_SYS_TYPES_H
 671 #include <sys/types.h>
 672 #endif
 673 #include <sys/socket.h>
 674 ])
 675
 676 AC_CHECK_TYPES([struct ip_mreq], , , [#include <netinet/in.h>])
 677
 678 GUILE_HEADER_LIBC_WITH_UNISTD
 679
 680 AC_TYPE_GETGROUPS
 681 AC_TYPE_SIGNAL
 682 AC_TYPE_MODE_T
 683
 684 # On mingw -lm is empty, so this test is unnecessary, but it's
 685 # harmless so we don't hard-code to suppress it.
 686 #
 687 AC_CHECK_LIB(m, cos)
 688
 689 AC_CHECK_FUNCS(gethostbyname)
 690 if test $ac_cv_func_gethostbyname = no; then
 691     AC_CHECK_LIB(nsl, gethostbyname)
 692 fi
 693
 694 AC_CHECK_FUNCS(connect)
 695 if test $ac_cv_func_connect = no; then
 696     AC_CHECK_LIB(socket, connect)
 697 fi
 698
 699 dnl
 700 dnl Check for Winsock and other functionality on Win32 (*not* CygWin)
 701 dnl
 702 EXTRA_DEFS=""
 703 case $host in
 704   *-*-mingw*)
 705     AC_CHECK_HEADER(winsock2.h, [AC_DEFINE([HAVE_WINSOCK2_H], 1,
 706       [Define if you have the <winsock2.h> header file.])])
 707     AC_CHECK_LIB(ws2_32, main)
 708     AC_LIBOBJ([win32-uname])
 709     if test "$enable_shared" = yes ; then
 710       EXTRA_DEFS="-DSCM_IMPORT"
 711       AC_DEFINE([USE_DLL_IMPORT], 1,
 712         [Define if you need additional CPP macros on Win32 platforms.])
 713     fi
 714     ;;
 715 esac
 716 AC_SUBST(EXTRA_DEFS)
 717
 718 # Reasons for testing:
 719 #   crt_externs.h - Darwin specific
 720 #
 721 AC_CHECK_HEADERS([assert.h crt_externs.h])
 722
 723 # Reasons for testing:
 724 #   DINFINITY - OSF specific
 725 #   DQNAN - OSF specific
 726 #       (DINFINITY and DQNAN are actually global variables, not functions)
 727 #   chsize - an MS-DOS-ism, found in mingw
 728 #   cexp, clog - not in various pre-c99 systems, and note that it's possible
 729 #       for gcc to provide the "complex double" type but the system to not
 730 #       have functions like cexp and clog
 731 #   clog10 - not in mingw (though others like clog and csqrt are)
 732 #   fesetround - available in C99, but not older systems
 733 #   ftruncate - posix, but probably not older systems (current mingw
 734 #               has it as an inline for chsize)
 735 #   ioctl - not in mingw.
 736 #   gmtime_r - recent posix, not on old systems
 737 #   pipe - not in mingw
 738 #   _pipe - specific to mingw, taking 3 args
 739 #   readdir_r - recent posix, not on old systems
 740 #   readdir64_r - not available on HP-UX 11.11
 741 #   stat64 - SuS largefile stuff, not on old systems
 742 #   sysconf - not on old systems
 743 #   truncate - not in mingw
 744 #   isblank - available as a GNU extension or in C99
 745 #   _NSGetEnviron - Darwin specific
 746 #   strcoll_l, newlocale - GNU extensions (glibc), also available on Darwin
 747 #   fork - unavailable on Windows
 748 #   utimensat - posix.1-2008
 749 #   sched_getaffinity, sched_setaffinity - GNU extensions (glibc)
 750 #   sendfile - non-POSIX, found in glibc
 751 #
 752 AC_CHECK_FUNCS([DINFINITY DQNAN cexp chsize clog clog10 ctermid         \
 753   fesetround ftime ftruncate fchown fchmod getcwd geteuid getsid        \
 754   gettimeofday gmtime_r ioctl lstat mkdir mknod nice pipe _pipe         \
 755   readdir_r readdir64_r readlink rename rmdir select setegid seteuid    \
 756   setlocale setpgid setsid sigaction siginterrupt stat64 strftime       \
 757   strptime symlink sync sysconf tcgetpgrp tcsetpgrp times uname waitpid \
 758   strdup system usleep atexit on_exit chown link fcntl ttyname getpwent \
 759   getgrent kill getppid getpgrp fork setitimer getitimer strchr strcmp  \
 760   index bcopy memcpy rindex truncate unsetenv isblank _NSGetEnviron     \
 761   strcoll strcoll_l newlocale utimensat sched_getaffinity               \
 762   sched_setaffinity sendfile])
 763
 764 AM_CONDITIONAL([BUILD_ICE_9_POPEN],
 765   [test "x$enable_posix" = "xyes" && test "x$ac_cv_func_fork" = "xyes"])
 766
 767 # Reasons for testing:
 768 #   netdb.h - not in mingw
 769 #   sys/param.h - not in mingw
 770 #   pthread.h - only available with pthreads.  ACX_PTHREAD doesn't
 771 #       check this specifically, we need it for the timespec test below.
 772 #   pthread_np.h - available on FreeBSD
 773 #   sethostname - the function itself check because it's not in mingw,
 774 #       the DECL is checked because Solaris 10 doens't have in any header
 775 #   hstrerror - on Tru64 5.1b the symbol is available in libc but the
 776 #       declaration isn't anywhere.
 777 #   cuserid - on Tru64 5.1b the declaration is documented to be available
 778 #       only with `_XOPEN_SOURCE' or some such.
 779 #
 780 AC_CHECK_HEADERS([crypt.h netdb.h pthread.h pthread_np.h sys/param.h sys/resource.h sys/file.h sys/mman.h])
 781 AC_CHECK_FUNCS(chroot flock getlogin cuserid getpriority setpriority getpass sethostname gethostname)
 782 AC_CHECK_DECLS([sethostname, hstrerror, cuserid])
 783
 784 # crypt() may or may not be available, for instance in some countries there
 785 # are restrictions on cryptography.
 786 #
 787 # crypt() might be in libc (eg. OpenBSD), or it might be in a separate
 788 # -lcrypt library (eg. Debian GNU/Linux).
 789 #
 790 # On HP-UX 11, crypt() is in libc and there's a dummy libcrypt.a.  We must
 791 # be careful to avoid -lcrypt in this case, since libtool will see there's
 792 # only a static libcrypt and decide to build only a static libguile.
 793 #
 794 # AC_SEARCH_LIBS lets us add -lcrypt to LIBS only if crypt() is not in the
 795 # libraries already in that list.
 796 #
 797 AC_SEARCH_LIBS(crypt, crypt,
 798   [AC_DEFINE([HAVE_CRYPT],1,
 799              [Define to 1 if you have the `crypt' function.])])
 800
 801 # When compiling with GCC on some OSs (Solaris, AIX), _Complex_I doesn't
 802 # work; in the reported cases so far, 1.0fi works well instead.  According
 803 # to the C99 spec, the complex.h header must provide a working definition
 804 # of _Complex_I, so we always try _Complex_I first.  The 1.0fi fallback
 805 # is a workaround for the failure of some systems to conform to C99.
 806 if test "$ac_cv_type_complex_double" = yes; then
 807   AC_MSG_CHECKING([for i])
 808   AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
 809 #if HAVE_COMPLEX_H
 810 #include <complex.h>
 811 #endif
 812 complex double z;
 813 ]], [[
 814 z = _Complex_I;
 815 ]])],
 816     [AC_DEFINE([GUILE_I],_Complex_I,[The imaginary unit (positive square root of -1).])
 817      AC_MSG_RESULT([_Complex_I])],
 818     [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
 819 #if HAVE_COMPLEX_H
 820 #include <complex.h>
 821 #endif
 822 complex double z;
 823 ]],[[
 824 z = 1.0fi;
 825 ]])],
 826   [AC_DEFINE([GUILE_I],1.0fi)
 827    AC_MSG_RESULT([1.0fi])],
 828   [ac_cv_type_complex_double=no
 829    AC_MSG_RESULT([not available])])])
 830 fi
 831
 832 # glibc 2.3.6 (circa 2006) and various prior versions had a bug where
 833 # csqrt(-i) returned a negative real part, when it should be positive
 834 # for the principal root.
 835 #
 836 if test "$ac_cv_type_complex_double" = yes; then
 837
 838   AC_CACHE_CHECK([whether csqrt is usable],
 839     guile_cv_use_csqrt,
 840     [AC_RUN_IFELSE([AC_LANG_SOURCE([[
 841 #include <complex.h>
 842 /* "volatile" is meant to prevent gcc from calculating the sqrt as a
 843    constant, we want to test libc. */
 844 volatile complex double z = - _Complex_I;
 845 int
 846 main (void)
 847 {
 848   z = csqrt (z);
 849   if (creal (z) > 0.0)
 850     return 0;  /* good */
 851   else
 852     return 1;  /* bad */
 853 }]])],
 854     [guile_cv_use_csqrt=yes],
 855     [guile_cv_use_csqrt="no, glibc 2.3 bug"],
 856     [guile_cv_use_csqrt="yes, hopefully (cross-compiling)"])])
 857   case $guile_cv_use_csqrt in
 858     yes*)
 859       AC_DEFINE([HAVE_USABLE_CSQRT], 1, [Define to 1 if csqrt is bug-free])
 860       ;;
 861   esac
 862 fi
 863
 864 AC_CACHE_SAVE
 865
 866 dnl GMP tests
 867 AC_LIB_HAVE_LINKFLAGS([gmp],
 868   [],
 869   [#include <gmp.h>],
 870   [mpz_import (0, 0, 0, 0, 0, 0, 0);])
 871
 872 if test "x$HAVE_LIBGMP" != "xyes"; then
 873   AC_MSG_ERROR([GNU MP 4.1 or greater not found, see README])
 874 fi
 875
 876 dnl `mpz_inits' and `mpz_clears' appeared in GMP 5.0.0.
 877 save_CPPFLAGS="$CPPFLAGS"
 878 if test "x$LIBGMP_PREFIX" != "x"; then
 879    CPPFLAGS="-I$LIBGMP_PREFIX $CPPFLAGS"
 880 fi
 881 AC_CHECK_DECLS([mpz_inits], [], [], [[#include <gmp.h>]])
 882 CPPFLAGS="$save_CPPFLAGS"
 883
 884 dnl GNU libunistring is checked for by Gnulib's `libunistring' module.
 885 if test "x$LTLIBUNISTRING" = "x"; then
 886   AC_MSG_ERROR([GNU libunistring is required, please install it.])
 887 fi
 888
 889 GUILE_LIBUNISTRING_WITH_ICONV_SUPPORT
 890 if test "x$ac_cv_libunistring_with_iconv_support" != "xyes"; then
 891   AC_MSG_ERROR([No iconv support.  Please recompile libunistring with iconv enabled.])
 892 fi
 893
 894 dnl Libffi is needed to compile Guile's foreign function interface, but its
 895 dnl interface isn't exposed in Guile's API.
 896 PKG_CHECK_MODULES(LIBFFI, libffi)
 897 AC_SUBST(LIBFFI_CFLAGS)
 898 AC_SUBST(LIBFFI_LIBS)
 899
 900 dnl figure out approriate ffi type for size_t
 901 AC_CHECK_SIZEOF(size_t)
 902 AC_CHECK_SIZEOF(ssize_t)
 903 ffi_size_type=uint$(($ac_cv_sizeof_size_t*8))
 904 ffi_ssize_type=sint$(($ac_cv_sizeof_ssize_t*8))
 905 AC_DEFINE_UNQUOTED([ffi_type_size_t], ffi_type_${ffi_size_type},
 906                    [ffi type for size_t])
 907 AC_DEFINE_UNQUOTED([ffi_type_ssize_t], ffi_type_${ffi_ssize_type},
 908                    [ffi type for ssize_t])
 909
 910 dnl i18n tests
 911 #AC_CHECK_HEADERS([libintl.h])
 912 #AC_CHECK_FUNCS(gettext)
 913 #if test $ac_cv_func_gettext = no; then
 914 #   AC_CHECK_LIB(intl, gettext)
 915 #fi
 916 #AC_CHECK_FUNCS([bindtextdomain textdomain])
 917 AM_GNU_GETTEXT([external], [need-ngettext])
 918
 919 ### Some systems don't declare some functions.  On such systems, we
 920 ### need to at least provide our own K&R-style declarations.
 921
 922 ### GUILE_FUNC_DECLARED(function, headerfile)
 923
 924 ### Check for a declaration of FUNCTION in HEADERFILE; if it is
 925 ### not there, #define MISSING_FUNCTION_DECL.
 926 AC_DEFUN([GUILE_FUNC_DECLARED], [
 927   AC_CACHE_CHECK(for $1 declaration, guile_cv_func_$1_declared,
 928     AC_EGREP_HEADER($1, $2,
 929                     guile_cv_func_$1_declared=yes,
 930                     guile_cv_func_$1_declared=no))
 931   if test [x$guile_cv_func_]$1[_declared] = xno; then
 932     AC_DEFINE([MISSING_]translit($1, [a-z], [A-Z])[_DECL], 1,
 933       [Define if the operating system supplies $1 without declaring it.])
 934   fi
 935 ])
 936
 937 GUILE_FUNC_DECLARED(sleep, unistd.h)
 938 GUILE_FUNC_DECLARED(usleep, unistd.h)
 939
 940 AC_CHECK_DECLS([getlogin, alarm])
 941
 942 AC_CHECK_DECLS([strptime],,,
 943 [#define _GNU_SOURCE /* ask glibc to give strptime prototype */
 944 #include <time.h>])
 945
 946 ### On some systems usleep has no return value.  If it does have one,
 947 ### we'd like to return it; otherwise, we'll fake it.
 948 AC_CACHE_CHECK([return type of usleep], guile_cv_func_usleep_return_type,
 949   [AC_EGREP_HEADER(changequote(<, >)<void[      ]+usleep>changequote([, ]),
 950                    unistd.h,
 951                    [guile_cv_func_usleep_return_type=void],
 952                    [guile_cv_func_usleep_return_type=int])])
 953 case "$guile_cv_func_usleep_return_type" in
 954   "void" )
 955     AC_DEFINE([USLEEP_RETURNS_VOID], 1,
 956       [Define if the system headers declare usleep to return void.])
 957   ;;
 958 esac
 959
 960 AC_CHECK_HEADER(sys/un.h, have_sys_un_h=1)
 961 if test -n "$have_sys_un_h" ; then
 962   AC_DEFINE([HAVE_UNIX_DOMAIN_SOCKETS], 1,
 963     [Define if the system supports Unix-domain (file-domain) sockets.])
 964 fi
 965
 966 AC_CHECK_FUNCS(getrlimit setrlimit)
 967
 968 AC_CHECK_FUNCS(socketpair getgroups setgroups setpwent pause tzset)
 969
 970 AC_CHECK_FUNCS(sethostent   gethostent   endhostent   dnl
 971                setnetent    getnetent    endnetent    dnl
 972                setprotoent  getprotoent  endprotoent  dnl
 973                setservent   getservent   endservent   dnl
 974                getnetbyaddr getnetbyname dnl
 975                inet_lnaof inet_makeaddr inet_netof hstrerror)
 976
 977 AC_CHECK_MEMBERS([struct sockaddr_in.sin_len],,,
 978 [#ifdef HAVE_SYS_TYPES_H
 979 #include <sys/types.h>
 980 #endif
 981 #include <netinet/in.h>])
 982
 983 AC_MSG_CHECKING(for __libc_stack_end)
 984 AC_CACHE_VAL(guile_cv_have_libc_stack_end,
 985 [AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <stdio.h>
 986 extern char *__libc_stack_end;]],
 987    [[printf("%p", (char*) __libc_stack_end);]])],
 988    [guile_cv_have_libc_stack_end=yes],
 989    [guile_cv_have_libc_stack_end=no])])
 990 AC_MSG_RESULT($guile_cv_have_libc_stack_end)
 991
 992 if test $guile_cv_have_libc_stack_end = yes; then
 993   AC_DEFINE([HAVE_LIBC_STACK_END], 1,
 994            [Define if you have the __libc_stack_end variable.])
 995 fi
 996
 997 dnl Some systems do not declare this.  Some systems do declare it, as a
 998 dnl macro.  With cygwin it may be in a DLL.
 999
1000 AC_MSG_CHECKING(whether netdb.h declares h_errno)
1001 AC_CACHE_VAL(guile_cv_have_h_errno,
1002   [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <netdb.h>]],
1003                                       [[int a = h_errno;]])],
1004   [guile_cv_have_h_errno=yes],
1005   [guile_cv_have_h_errno=no])])
1006 AC_MSG_RESULT($guile_cv_have_h_errno)
1007 if test $guile_cv_have_h_errno = yes; then
1008   AC_DEFINE([HAVE_H_ERRNO], 1, [Define if h_errno is declared in netdb.h.])
1009 fi
1010
1011 AC_MSG_CHECKING(whether uint32_t is defined)
1012 AC_CACHE_VAL(guile_cv_have_uint32_t,
1013   [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <sys/types.h>
1014                    #if HAVE_STDINT_H
1015                    #include <stdint.h>
1016                    #endif
1017                    #ifndef HAVE_NETDB_H
1018                    #include <netdb.h>
1019                    #endif]],
1020                    [[uint32_t a;]])],
1021                    [guile_cv_have_uint32_t=yes],
1022                    [guile_cv_have_uint32_t=no])])
1023 AC_MSG_RESULT($guile_cv_have_uint32_t)
1024 if test $guile_cv_have_uint32_t = yes; then
1025   AC_DEFINE([HAVE_UINT32_T], 1,
1026     [Define if uint32_t typedef is defined when netdb.h is include.])
1027 fi
1028
1029 AC_MSG_CHECKING(for working IPv6 support)
1030 AC_CACHE_VAL(guile_cv_have_ipv6,
1031 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1032 #ifdef HAVE_SYS_TYPES_H
1033 #include <sys/types.h>
1034 #endif
1035 #include <netinet/in.h>
1036 #include <sys/socket.h>]],
1037 [[struct sockaddr_in6 a;  a.sin6_family = AF_INET6;]])],
1038 [guile_cv_have_ipv6=yes],
1039 [guile_cv_have_ipv6=no])])
1040 AC_MSG_RESULT($guile_cv_have_ipv6)
1041 if test $guile_cv_have_ipv6 = yes; then
1042   AC_DEFINE([HAVE_IPV6], 1, [Define if you want support for IPv6.])
1043 fi
1044
1045 # included in rfc2553 but not in older implementations, e.g., glibc 2.1.3.
1046 AC_MSG_CHECKING(whether sockaddr_in6 has sin6_scope_id)
1047 AC_CACHE_VAL(guile_cv_have_sin6_scope_id,
1048 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1049 #ifdef HAVE_SYS_TYPES_H
1050 #include <sys/types.h>
1051 #endif
1052 #include <netinet/in.h>]],
1053 [[struct sockaddr_in6 sok;  sok.sin6_scope_id = 0;]])],
1054 [guile_cv_have_sin6_scope_id=yes],
1055 [guile_cv_have_sin6_scope_id=no])])
1056 AC_MSG_RESULT($guile_cv_have_sin6_scope_id)
1057 if test $guile_cv_have_sin6_scope_id = yes; then
1058   AC_DEFINE([HAVE_SIN6_SCOPE_ID], 1,
1059     [Define this if your IPv6 has sin6_scope_id in sockaddr_in6 struct.])
1060 fi
1061
1062 # struct sockaddr_in6 field sin_len is only present on BSD systems
1063 AC_CHECK_MEMBERS([struct sockaddr_in6.sin6_len],,,
1064 [#ifdef HAVE_SYS_TYPES_H
1065 #include <sys/types.h>
1066 #endif
1067 #include <netinet/in.h>])
1068
1069 AC_MSG_CHECKING(whether localtime caches TZ)
1070 AC_CACHE_VAL(guile_cv_localtime_cache,
1071 [if test x$ac_cv_func_tzset = xyes; then
1072 AC_RUN_IFELSE([AC_LANG_SOURCE([[#include <time.h>
1073 #if STDC_HEADERS
1074 # include <stdlib.h>
1075 #endif
1076 extern char **environ;
1077 unset_TZ ()
1078 {
1079   char **from, **to;
1080   for (to = from = environ; (*to = *from); from++)
1081     if (! (to[0][0] == 'T' && to[0][1] == 'Z' && to[0][2] == '='))
1082       to++;
1083 }
1084 char TZ_GMT0[] = "TZ=GMT0";
1085 char TZ_PST8[] = "TZ=PST8";
1086 main()
1087 {
1088   time_t now = time ((time_t *) 0);
1089   int hour_GMT0, hour_unset;
1090   if (putenv (TZ_GMT0) != 0)
1091     exit (1);
1092   hour_GMT0 = localtime (&now)->tm_hour;
1093   unset_TZ ();
1094   hour_unset = localtime (&now)->tm_hour;
1095   if (putenv (TZ_PST8) != 0)
1096     exit (1);
1097   if (localtime (&now)->tm_hour == hour_GMT0)
1098     exit (1);
1099   unset_TZ ();
1100   if (localtime (&now)->tm_hour != hour_unset)
1101     exit (1);
1102   exit (0);
1103 }]])],
1104 [guile_cv_localtime_cache=no],
1105 [guile_cv_localtime_cache=yes],
1106 [# If we have tzset, assume the worst when cross-compiling.
1107 guile_cv_localtime_cache=yes])
1108 else
1109         # If we lack tzset, report that localtime does not cache TZ,
1110         # since we can't invalidate the cache if we don't have tzset.
1111         guile_cv_localtime_cache=no
1112 fi])dnl
1113 AC_MSG_RESULT($guile_cv_localtime_cache)
1114 if test $guile_cv_localtime_cache = yes; then
1115   AC_DEFINE([LOCALTIME_CACHE], 1, [Define if localtime caches the TZ setting.])
1116 fi
1117
1118 if test "$enable_regex" = yes; then
1119    AC_LIBOBJ([regex-posix])
1120    AC_DEFINE([ENABLE_REGEX], 1, [Define when regex support is enabled.])
1121 fi
1122
1123 AC_REPLACE_FUNCS([strerror memmove mkstemp])
1124
1125 # Reasons for testing:
1126 #   asinh, acosh, atanh, trunc - C99 standard, generally not available on
1127 #                                older systems
1128 #   sincos - GLIBC extension
1129 #
1130 AC_CHECK_FUNCS(asinh acosh atanh copysign finite sincos trunc)
1131
1132 # C99 specifies isinf and isnan as macros.
1133 # HP-UX provides only macros, no functions.
1134 # glibc 2.3.2 provides both macros and functions.
1135 # IRIX 6.5 and Solaris 8 only provide functions.
1136 #
1137 # The following tests detect isinf and isnan either as functions or as
1138 # macros from <math.h>.  Plain AC_CHECK_FUNCS is insufficient, it doesn't
1139 # use <math.h> so doesn't detect on macro-only systems like HP-UX.
1140 #
1141 AC_MSG_CHECKING([for isinf])
1142 AC_LINK_IFELSE([AC_LANG_SOURCE(
1143 [[#include <math.h>
1144 volatile double x = 0.0;
1145 int main () { return (isinf(x) != 0); }]])],
1146   [AC_MSG_RESULT([yes])
1147    AC_DEFINE([HAVE_ISINF], 1,
1148              [Define to 1 if you have the `isinf' macro or function.])],
1149   [AC_MSG_RESULT([no])])
1150 AC_MSG_CHECKING([for isnan])
1151 AC_LINK_IFELSE([AC_LANG_SOURCE([[
1152 #include <math.h>
1153 volatile double x = 0.0;
1154 int main () { return (isnan(x) != 0); }]])],
1155   [AC_MSG_RESULT([yes])
1156    AC_DEFINE([HAVE_ISNAN], 1,
1157              [Define to 1 if you have the `isnan' macro or function.])],
1158   [AC_MSG_RESULT([no])])
1159
1160 # Reasons for checking:
1161 #
1162 #     st_rdev
1163 #     st_blksize
1164 #     st_blocks   not in mingw
1165 #     tm_gmtoff   BSD+GNU, not in C99
1166 #
1167 # Note AC_STRUCT_ST_BLOCKS is not used here because we don't want the
1168 # AC_LIBOBJ(fileblocks) replacement which that macro gives.
1169 #
1170 AC_CHECK_MEMBERS([struct stat.st_rdev, struct stat.st_blksize, struct stat.st_blocks, struct stat.st_atim, struct stat.st_mtim, struct stat.st_ctim],,,
1171                  [#define _GNU_SOURCE
1172 AC_INCLUDES_DEFAULT
1173 ])
1174
1175 AC_STRUCT_TIMEZONE
1176 AC_CHECK_MEMBERS([struct tm.tm_gmtoff],,,
1177 [#include <time.h>
1178 #ifdef TIME_WITH_SYS_TIME
1179 # include <sys/time.h>
1180 # include <time.h>
1181 #else
1182 # if HAVE_SYS_TIME_H
1183 #  include <sys/time.h>
1184 # else
1185 #  include <time.h>
1186 # endif
1187 #endif
1188 ])
1189 GUILE_STRUCT_UTIMBUF
1190
1191
1192 #--------------------------------------------------------------------
1193 #
1194 # What values do the iconv error handlers have?
1195 #
1196 # The only place that we need iconv in our public interfaces is for
1197 # the error handlers, which are just ints.  So we weaken our
1198 # dependency by looking up those values at configure-time.
1199 #--------------------------------------------------------------------
1200 GUILE_UNISTRING_ICONVEH_VALUES
1201
1202 #--------------------------------------------------------------------
1203 #
1204 # Which way does the stack grow?
1205 #
1206 # Following code comes from Autoconf 2.69's internal _AC_LIBOBJ_ALLOCA
1207 # macro (/usr/share/autoconf/autoconf/functions.m4).  Gnulib has
1208 # very similar code, so in future we could look at using that.
1209 #
1210 # An important detail is that the code involves find_stack_direction
1211 # calling _itself_ - which means that find_stack_direction (or at
1212 # least the second find_stack_direction() call) cannot be inlined.
1213 # If the code could be inlined, that might cause the test to give
1214 # an incorrect answer.
1215 #--------------------------------------------------------------------
1216
1217 SCM_I_GSC_STACK_GROWS_UP=0
1218 AC_RUN_IFELSE([AC_LANG_SOURCE(
1219 [AC_INCLUDES_DEFAULT
1220 int
1221 find_stack_direction (int *addr, int depth)
1222 {
1223   int dir, dummy = 0;
1224   if (! addr)
1225     addr = &dummy;
1226   *addr = addr < &dummy ? 1 : addr == &dummy ? 0 : -1;
1227   dir = depth ? find_stack_direction (addr, depth - 1) : 0;
1228   return dir + dummy;
1229 }
1230
1231 int
1232 main (int argc, char **argv)
1233 {
1234   return find_stack_direction (0, argc + !argv + 20) < 0;
1235 }])],
1236                [SCM_I_GSC_STACK_GROWS_UP=1],
1237                [],
1238                [AC_MSG_WARN(Guessing that stack grows down -- see scmconfig.h)])
1239
1240 #--------------------------------------------------------------------
1241 #
1242 # Boehm's GC library
1243 #
1244 #--------------------------------------------------------------------
1245 PKG_CHECK_MODULES([BDW_GC], [bdw-gc])
1246
1247 save_LIBS="$LIBS"
1248 LIBS="$BDW_GC_LIBS $LIBS"
1249 CFLAGS="$BDW_GC_CFLAGS $CFLAGS"
1250
1251 AC_CHECK_FUNCS([GC_do_blocking GC_call_with_gc_active GC_pthread_exit   \
1252   GC_pthread_cancel GC_allow_register_threads GC_pthread_sigmask        \
1253   GC_set_start_callback GC_get_heap_usage_safe                          \
1254   GC_get_free_space_divisor GC_gcollect_and_unmap GC_get_unmapped_bytes \
1255   GC_set_finalizer_notifier GC_set_finalize_on_demand                   \
1256   GC_set_all_interior_pointers GC_get_gc_no GC_set_java_finalization])
1257
1258 # Though the `GC_do_blocking ()' symbol is present in GC 7.1, it is not
1259 # declared, and has a different type (returning void instead of
1260 # void*).
1261 AC_CHECK_DECL([GC_do_blocking],
1262   [AC_DEFINE([HAVE_DECL_GC_DO_BLOCKING], [1],
1263     [Define this if the `GC_do_blocking ()' function is declared])],
1264   [],
1265   [#include <gc/gc.h>])
1266
1267 # `GC_fn_type' is not available in GC 7.1 and earlier.
1268 AC_CHECK_TYPE([GC_fn_type],
1269   [AC_DEFINE([HAVE_GC_FN_TYPE], [1],
1270     [Define this if the `GC_fn_type' type is available.])],
1271   [],
1272   [#include <gc/gc.h>])
1273
1274 # `GC_stack_base' is not available in GC 7.1 and earlier.
1275 AC_CHECK_TYPE([struct GC_stack_base],
1276   [AC_DEFINE([HAVE_GC_STACK_BASE], [1],
1277     [Define this if the `GC_stack_base' type is available.])],
1278   [],
1279   [#include <gc/gc.h>])
1280
1281 LIBS="$save_LIBS"
1282
1283
1284 AC_CHECK_SIZEOF(float)
1285 if test "$ac_cv_sizeof_float" -le "$ac_cv_sizeof_long"; then
1286     AC_DEFINE([SCM_SINGLES], 1,
1287               [Define this if floats are the same size as longs.])
1288 fi
1289
1290 AC_MSG_CHECKING(for struct linger)
1291 AC_CACHE_VAL(scm_cv_struct_linger,
1292         AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1293 #include <sys/types.h>
1294 #include <sys/socket.h>]],
1295                           [[struct linger lgr;  lgr.l_linger = 100]])],
1296                           [scm_cv_struct_linger="yes"],
1297                           [scm_cv_struct_linger="no"]))
1298 AC_MSG_RESULT($scm_cv_struct_linger)
1299 if test $scm_cv_struct_linger = yes; then
1300         AC_DEFINE([HAVE_STRUCT_LINGER], 1,
1301           [Define this if your system defines struct linger, for use with the
1302            getsockopt and setsockopt system calls.])
1303 fi
1304
1305 #--------------------------------------------------------------------
1306 #
1307 # Flags for thread support
1308 #
1309 #--------------------------------------------------------------------
1310
1311 SCM_I_GSC_USE_PTHREAD_THREADS=0
1312 SCM_I_GSC_USE_NULL_THREADS=0
1313 AC_SUBST([SCM_I_GSC_USE_PTHREAD_THREADS])
1314 AC_SUBST([SCM_I_GSC_USE_NULL_THREADS])
1315
1316 ### What thread package has the user asked for?
1317 AC_ARG_WITH(threads, [  --with-threads          thread interface],
1318             , with_threads=yes)
1319
1320 AC_SUBST(SCM_I_GSC_NEED_BRACES_ON_PTHREAD_ONCE_INIT, 0)
1321 AC_SUBST(SCM_I_GSC_NEED_BRACES_ON_PTHREAD_MUTEX_INITIALIZER, 0)
1322
1323 case "$with_threads" in
1324   "yes" | "pthread" | "pthreads" | "pthread-threads" | "")
1325
1326     build_pthread_support="yes"
1327
1328     ACX_PTHREAD([CC="$PTHREAD_CC"
1329        LIBS="$PTHREAD_LIBS $LIBS"
1330        SCM_I_GSC_USE_PTHREAD_THREADS=1
1331        with_threads="pthreads"],
1332       [with_threads="null"
1333        build_pthread_support="no"])
1334
1335     old_CFLAGS="$CFLAGS"
1336     CFLAGS="$PTHREAD_CFLAGS $CFLAGS"
1337
1338     # Reasons for testing:
1339     #     pthread_getattr_np - "np" meaning "non portable" says it
1340     #         all; not present on MacOS X or Solaris 10
1341     #     pthread_get_stackaddr_np - "np" meaning "non portable" says it
1342     #         all; specific to MacOS X
1343     #     pthread_attr_get_np - "np" meaning "non portable" says it
1344     #         all; specific to FreeBSD
1345     #     pthread_sigmask - not available on mingw
1346     #
1347     AC_CHECK_FUNCS(pthread_attr_getstack pthread_getattr_np pthread_get_stackaddr_np pthread_attr_get_np pthread_sigmask)
1348
1349     # On past versions of Solaris, believe 8 through 10 at least, you
1350     # had to write "pthread_once_t foo = { PTHREAD_ONCE_INIT };".
1351     # This is contrary to POSIX:
1352     # http://www.opengroup.org/onlinepubs/000095399/functions/pthread_once.html
1353     # Check here if this style is required.
1354     #
1355     # glibc (2.3.6 at least) works both with or without braces, so the
1356     # test checks whether it works without.
1357     #
1358
1359     if test "$GCC" = "yes"; then
1360       # Since GCC only issues a warning for missing braces, so we need
1361       # `-Werror' to catch it.
1362       CFLAGS="-Werror -Wmissing-braces $CFLAGS"
1363     fi
1364
1365     AC_CACHE_CHECK([whether PTHREAD_ONCE_INIT needs braces],
1366       guile_cv_need_braces_on_pthread_once_init,
1367       [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <pthread.h>
1368          pthread_once_t foo = PTHREAD_ONCE_INIT;]])],
1369         [guile_cv_need_braces_on_pthread_once_init=no],
1370         [guile_cv_need_braces_on_pthread_once_init=yes])])
1371     if test "$guile_cv_need_braces_on_pthread_once_init" = yes; then
1372       SCM_I_GSC_NEED_BRACES_ON_PTHREAD_ONCE_INIT=1
1373     fi
1374
1375     # Same problem with `PTHREAD_MUTEX_INITIALIZER', e.g., on IRIX
1376     # 6.5.30m with GCC 3.3.
1377     AC_CACHE_CHECK([whether PTHREAD_MUTEX_INITIALIZER needs braces],
1378       guile_cv_need_braces_on_pthread_mutex_initializer,
1379       [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <pthread.h>
1380          pthread_mutex_t foo = PTHREAD_MUTEX_INITIALIZER;]])],
1381         [guile_cv_need_braces_on_pthread_mutex_initializer=no],
1382         [guile_cv_need_braces_on_pthread_mutex_initializer=yes])])
1383     if test "$guile_cv_need_braces_on_pthread_mutex_initializer" = yes; then
1384       SCM_I_GSC_NEED_BRACES_ON_PTHREAD_MUTEX_INITIALIZER=1
1385     fi
1386
1387     CFLAGS="$old_CFLAGS"
1388
1389     # On Solaris, sched_yield lives in -lrt.
1390     AC_SEARCH_LIBS(sched_yield, rt)
1391
1392   ;;
1393 esac
1394
1395 case "$with_threads" in
1396   "pthreads")
1397   ;;
1398   "no" | "null")
1399     SCM_I_GSC_USE_NULL_THREADS=1
1400     SCM_I_GSC_HAVE_THREAD_STORAGE_CLASS=0
1401     with_threads="null-threads"
1402   ;;
1403   * )
1404     AC_MSG_ERROR(invalid value for --with-threads: $with_threads)
1405   ;;
1406 esac
1407
1408 AC_MSG_CHECKING(what kind of threads to support)
1409 AC_MSG_RESULT($with_threads)
1410
1411 AM_CONDITIONAL([BUILD_PTHREAD_SUPPORT],
1412   [test "x$build_pthread_support" = "xyes"])
1413
1414
1415 ## Check whether pthread_attr_getstack works for the main thread
1416
1417 if test "$with_threads" = pthreads; then
1418
1419 AC_MSG_CHECKING([whether pthread_attr_getstack works for the main thread])
1420 old_CFLAGS="$CFLAGS"
1421 CFLAGS="$PTHREAD_CFLAGS $CFLAGS"
1422 if test "$cross_compiling" = "no"; then
1423   AC_RUN_IFELSE([AC_LANG_SOURCE([[
1424   #if HAVE_PTHREAD_ATTR_GETSTACK
1425   #include <pthread.h>
1426
1427   int main ()
1428   {
1429     pthread_attr_t attr;
1430     void *start, *end;
1431     size_t size;
1432
1433     pthread_getattr_np (pthread_self (), &attr);
1434     pthread_attr_getstack (&attr, &start, &size);
1435     end = (char *)start + size;
1436
1437     if ((void *)&attr < start || (void *)&attr >= end)
1438       return 1;
1439     else
1440       return 0;
1441   }
1442   #else
1443   int main ()
1444   {
1445     return 1;
1446   }
1447   #endif
1448   ]])],
1449   [works=yes
1450    AC_DEFINE([PTHREAD_ATTR_GETSTACK_WORKS], [1], [Define when pthread_att_get_stack works for the main thread])],
1451   [works=no],
1452   [])
1453 else
1454   works="assuming it doesn't"
1455 fi
1456 CFLAGS="$old_CFLAGS"
1457 AC_MSG_RESULT($works)
1458
1459 GUILE_THREAD_LOCAL_STORAGE
1460
1461 fi # with_threads=pthreads
1462
1463
1464 ## Cross building
1465 if test "$cross_compiling" = "yes"; then
1466   AC_MSG_CHECKING(cc for build)
1467   ## /usr/bin/cc still uses wrong assembler
1468   ## CC_FOR_BUILD="${CC_FOR_BUILD-/usr/bincc}"
1469   CC_FOR_BUILD="${CC_FOR_BUILD-PATH=/usr/bin:$PATH cc}"
1470 else
1471   CC_FOR_BUILD="${CC_FOR_BUILD-$CC}"
1472 fi
1473
1474 ## AC_MSG_CHECKING("if we are cross compiling")
1475 ## AC_MSG_RESULT($cross_compiling)
1476 if test "$cross_compiling" = "yes"; then
1477    AC_MSG_RESULT($CC_FOR_BUILD)
1478 fi
1479
1480 ## No need as yet to be more elaborate
1481 CCLD_FOR_BUILD="$CC_FOR_BUILD"
1482
1483 AC_SUBST(cross_compiling)
1484 AC_ARG_VAR(CC_FOR_BUILD,[build system C compiler])
1485 AC_SUBST(CCLD_FOR_BUILD)
1486
1487 ## libtool erroneously calls CC_FOR_BUILD HOST_CC;
1488 ## --HOST is the platform that PACKAGE is compiled for.
1489 HOST_CC="$CC_FOR_BUILD"
1490 AC_SUBST(HOST_CC)
1491
1492 GUILE_CHECK_GUILE_FOR_BUILD
1493
1494 ## If we're using GCC, ask for aggressive warnings.
1495 GCC_CFLAGS=""
1496 case "$GCC" in
1497   yes )
1498     ## We had -Wstrict-prototypes in here for a bit, but Guile does too
1499     ## much stuff with generic function pointers for that to really be
1500     ## less than exasperating.
1501     ## -Wundef was removed because Gnulib prevented it (see
1502     ## <http://thread.gmane.org/gmane.lisp.guile.bugs/5329>.)
1503
1504     ## Build with `-fno-strict-aliasing' to prevent miscompilation on
1505     ## some platforms.  See
1506     ## <http://lists.gnu.org/archive/html/guile-devel/2012-01/msg00487.html>.
1507
1508     POTENTIAL_GCC_CFLAGS="-Wall -Wmissing-prototypes \
1509       -Wdeclaration-after-statement -Wpointer-arith \
1510       -Wswitch-enum -fno-strict-aliasing"
1511     # Do this here so we don't screw up any of the tests above that might
1512     # not be "warning free"
1513     if test "${GUILE_ERROR_ON_WARNING}" = yes
1514     then
1515         POTENTIAL_GCC_CFLAGS="${POTENTIAL_GCC_CFLAGS} -Werror"
1516         enable_compile_warnings=no
1517     fi
1518
1519     for flag in $POTENTIAL_GCC_CFLAGS
1520     do
1521         gl_WARN_ADD([$flag], [GCC_CFLAGS])
1522     done
1523     ;;
1524 esac
1525
1526 AC_SUBST(GCC_CFLAGS)
1527
1528 # Check for GNU ld's "-z relro".
1529 GUILE_GNU_LD_RELRO
1530
1531
1532 ## If we're creating a shared library (using libtool!), then we'll
1533 ## need to generate a list of .lo files corresponding to the .o files
1534 ## given in LIBOBJS.  We'll call it LIBLOBJS.
1535 LIBLOBJS="`echo ${LIB@&t@OBJS} | sed 's,\.[[^.]]* ,.lo ,g;s,\.[[^.]]*$,.lo,'`"
1536
1537 ## We also need to create corresponding .doc and .x files
1538 EXTRA_DOT_DOC_FILES="`echo ${LIB@&t@OBJS} | sed 's,\.[[^.]]* ,.doc ,g;s,\.[[^.]]*$,.doc,'`"
1539 EXTRA_DOT_X_FILES="`echo ${LIB@&t@OBJS} | sed 's,\.[[^.]]* ,.x ,g;s,\.[[^.]]*$,.x,'`"
1540
1541 # GNU Readline bindings.
1542 GUILE_READLINE
1543
1544 AC_SUBST(GUILE_MAJOR_VERSION)
1545 AC_SUBST(GUILE_MINOR_VERSION)
1546 AC_SUBST(GUILE_MICRO_VERSION)
1547 AC_SUBST(GUILE_EFFECTIVE_VERSION)
1548 AC_SUBST(GUILE_VERSION)
1549
1550 #######################################################################
1551 # library versioning
1552
1553 AC_SUBST(LIBGUILE_INTERFACE_CURRENT)
1554 AC_SUBST(LIBGUILE_INTERFACE_REVISION)
1555 AC_SUBST(LIBGUILE_INTERFACE_AGE)
1556 AC_SUBST(LIBGUILE_INTERFACE)
1557
1558 AC_SUBST(LIBGUILE_I18N_MAJOR)
1559 AC_SUBST(LIBGUILE_I18N_INTERFACE_CURRENT)
1560 AC_SUBST(LIBGUILE_I18N_INTERFACE_REVISION)
1561 AC_SUBST(LIBGUILE_I18N_INTERFACE_AGE)
1562 AC_SUBST(LIBGUILE_I18N_INTERFACE)
1563
1564
1565 #######################################################################
1566
1567 dnl Tell guile-config what flags guile users should compile and link
1568 dnl with, keeping only `-I' flags from $CPPFLAGS.
1569 GUILE_CFLAGS=""
1570 next_is_includedir=false
1571 for flag in $CPPFLAGS
1572 do
1573   if $next_is_includedir; then
1574     GUILE_CFLAGS="$GUILE_CFLAGS -I $flag"
1575     next_is_includedir=false
1576   else
1577     case "$flag" in
1578       -I)  next_is_includedir=true;;
1579       -I*) GUILE_CFLAGS="$GUILE_CFLAGS $flag";;
1580       *)   ;;
1581     esac
1582   fi
1583 done
1584
1585 GUILE_CFLAGS="$GUILE_CFLAGS $PTHREAD_CFLAGS"
1586 GUILE_LIBS="$LDFLAGS $LIBS"
1587
1588 AC_SUBST(GUILE_LIBS)
1589 AC_SUBST(GUILE_CFLAGS)
1590
1591 AC_SUBST(AWK)
1592 AC_SUBST(LIBLOBJS)
1593 AC_SUBST(EXTRA_DOT_DOC_FILES)
1594 AC_SUBST(EXTRA_DOT_X_FILES)
1595
1596 dnl See also top_builddir in info node: (libtool)AC_PROG_LIBTOOL
1597 top_builddir_absolute=`pwd`
1598 AC_SUBST(top_builddir_absolute)
1599 top_srcdir_absolute=`(cd $srcdir && pwd)`
1600 AC_SUBST(top_srcdir_absolute)
1601
1602 dnl `sitedir' goes into libpath.h and the pkg-config file.
1603 pkgdatadir="$datadir/$PACKAGE_TARNAME"
1604 sitedir="$pkgdatadir/site/$GUILE_EFFECTIVE_VERSION"
1605 AC_SUBST([sitedir])
1606
1607 dnl Name of the `guile' program.
1608 guile_program_name="`echo guile | "$SED" "$program_transform_name"`"
1609 AC_SUBST([guile_program_name])
1610
1611 # Additional SCM_I_GSC definitions are above.
1612 AC_SUBST([SCM_I_GSC_GUILE_DEBUG])
1613 AC_SUBST([SCM_I_GSC_ENABLE_DEPRECATED])
1614 AC_SUBST([SCM_I_GSC_STACK_GROWS_UP])
1615 AC_SUBST([SCM_I_GSC_C_INLINE])
1616 AC_CONFIG_FILES([libguile/gen-scmconfig.h])
1617
1618 AC_CONFIG_FILES([
1619   Makefile
1620   am/Makefile
1621   lib/Makefile
1622   benchmark-suite/Makefile
1623   gc-benchmarks/Makefile
1624   doc/Makefile
1625   doc/r5rs/Makefile
1626   doc/ref/Makefile
1627   emacs/Makefile
1628   examples/Makefile
1629   libguile/Makefile
1630   libguile/version.h
1631   guile-readline/Makefile
1632   test-suite/Makefile
1633   test-suite/standalone/Makefile
1634   test-suite/vm/Makefile
1635   meta/Makefile
1636   module/Makefile
1637 ])
1638
1639 AC_CONFIG_FILES([meta/guile-2.0.pc])
1640 AC_CONFIG_FILES([meta/guile-2.0-uninstalled.pc])
1641
1642 GUILE_CONFIG_SCRIPT([check-guile])
1643 GUILE_CONFIG_SCRIPT([benchmark-guile])
1644 GUILE_CONFIG_SCRIPT([meta/guile])
1645 GUILE_CONFIG_SCRIPT([meta/uninstalled-env])
1646 GUILE_CONFIG_SCRIPT([meta/gdb-uninstalled-guile])
1647 GUILE_CONFIG_SCRIPT([meta/guild])
1648 GUILE_CONFIG_SCRIPT([libguile/guile-snarf])
1649 GUILE_CONFIG_SCRIPT([libguile/guile-snarf-docs])
1650 GUILE_CONFIG_SCRIPT([test-suite/standalone/test-use-srfi])
1651 GUILE_CONFIG_SCRIPT([test-suite/standalone/test-fast-slot-ref])
1652
1653 AC_OUTPUT
1654
1655 dnl Local Variables:
1656 dnl comment-start: "dnl "
1657 dnl comment-end: ""
1658 dnl comment-start-skip: "\\bdnl\\b\\s *"
1659 dnl End: