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, 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
   8
   9 This file is part of GUILE
  10
  11 GUILE is free software; you can redistribute it and/or modify it under
  12 the terms of the GNU Lesser General Public License as published by the
  13 Free Software Foundation; either version 3, or (at your option) any
  14 later version.
  15
  16 GUILE is distributed in the hope that it will be useful, but WITHOUT
  17 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  18 FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public
  19 License for more details.
  20
  21 You should have received a copy of the GNU Lesser General Public
  22 License along with GUILE; see the file COPYING.LESSER.  If not, write
  23 to the Free Software Foundation, Inc., 51 Franklin Street, Fifth
  24 Floor, Boston, MA 02110-1301, USA.
  25
  26 ]])
  27
  28 AC_PREREQ(2.61)
  29
  30 dnl  `patsubst' here deletes the newline which "echo" prints.  We can't use
  31 dnl  "echo -n" since -n is not portable (see autoconf manual "Limitations of
  32 dnl  Builtins"), in particular on solaris it results in a literal "-n" in
  33 dnl  the output.
  34 dnl
  35 AC_INIT([GNU Guile],
  36         patsubst(m4_esyscmd(. ./GUILE-VERSION && echo ${GUILE_VERSION}),[
  37 ]),
  38         [bug-guile@gnu.org])
  39 AC_CONFIG_AUX_DIR([build-aux])
  40 AC_CONFIG_MACRO_DIR([m4])
  41 AC_CONFIG_SRCDIR(GUILE-VERSION)
  42
  43 AM_INIT_AUTOMAKE([gnu no-define check-news -Wall -Wno-override])
  44
  45 AC_COPYRIGHT(GUILE_CONFIGURE_COPYRIGHT)
  46 AC_CONFIG_SRCDIR([GUILE-VERSION])
  47
  48 . $srcdir/GUILE-VERSION
  49
  50 AC_CONFIG_HEADERS([config.h])
  51 AH_TOP(/*GUILE_CONFIGURE_COPYRIGHT*/)
  52
  53 #--------------------------------------------------------------------
  54
  55 AC_LANG([C])
  56
  57 dnl Some more checks for Win32
  58 AC_CANONICAL_HOST
  59
  60 AC_LIBTOOL_WIN32_DLL
  61
  62 AC_PROG_INSTALL
  63 AC_PROG_CC
  64 gl_EARLY
  65 AC_PROG_CPP
  66 AC_PROG_SED
  67 AC_PROG_AWK
  68
  69 dnl Gnulib.
  70 gl_INIT
  71
  72 AC_PROG_CC_C89
  73
  74 # for per-target cflags in the libguile subdir
  75 AM_PROG_CC_C_O
  76
  77 AC_LIBTOOL_DLOPEN
  78 AC_PROG_LIBTOOL
  79 AC_CHECK_LIB([ltdl], [lt_dlinit], ,
  80   [AC_MSG_ERROR([libltdl not found.  See README.])])
  81 AC_CHECK_HEADER([ltdl.h], [],
  82   [AC_MSG_ERROR([<ltdl.h> not found.  See README.])])
  83
  84 AC_CHECK_PROG(have_makeinfo, makeinfo, yes, no)
  85 AM_CONDITIONAL(HAVE_MAKEINFO, test "$have_makeinfo" = yes)
  86
  87 AM_PATH_LISPDIR
  88
  89 AC_DEFINE_UNQUOTED([HOST_TYPE], ["$host"],
  90   [Define to the host's GNU triplet.])
  91
  92 #--------------------------------------------------------------------
  93 #
  94 # User options (after above tests that may set default CFLAGS etc.)
  95 #
  96 #--------------------------------------------------------------------
  97
  98 GUILE_ERROR_ON_WARNING="no"
  99
 100 AC_ARG_ENABLE(error-on-warning,
 101   [  --enable-error-on-warning    treat compile warnings as errors],
 102   [case "${enableval}" in
 103      yes | y) GUILE_ERROR_ON_WARNING="yes" ;;
 104      no | n)  GUILE_ERROR_ON_WARNING="no" ;;
 105      *) AC_MSG_ERROR(bad value ${enableval} for --enable-error-on-warning) ;;
 106    esac])
 107
 108 SCM_I_GSC_GUILE_DEBUG_FREELIST=0
 109 AC_ARG_ENABLE(debug-freelist,
 110   [  --enable-debug-freelist include garbage collector freelist debugging code],
 111   if test "$enable_debug_freelist" = y \
 112      || test "$enable_debug_freelist" = yes; then
 113     SCM_I_GSC_GUILE_DEBUG_FREELIST=1
 114   fi)
 115
 116 AC_ARG_ENABLE(debug-malloc,
 117   [  --enable-debug-malloc   include malloc debugging code],
 118   if test "$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 "$enable_guile_debug" = yes; then
 128     SCM_I_GSC_GUILE_DEBUG=1
 129   fi)
 130
 131 AC_ARG_ENABLE(posix,
 132   [  --disable-posix         omit posix interfaces],,
 133   enable_posix=yes)
 134
 135 AC_ARG_ENABLE(networking,
 136   [  --disable-networking    omit networking interfaces],,
 137   enable_networking=yes)
 138
 139 AC_ARG_ENABLE(regex,
 140   [  --disable-regex         omit regular expression interfaces],,
 141   enable_regex=yes)
 142
 143 AC_ARG_ENABLE([discouraged],
 144   AS_HELP_STRING([--disable-discouraged],[omit discouraged features]))
 145
 146 if test "$enable_discouraged" = no; then
 147   SCM_I_GSC_ENABLE_DISCOURAGED=0
 148 else
 149   SCM_I_GSC_ENABLE_DISCOURAGED=1
 150 fi
 151
 152 AC_ARG_ENABLE([deprecated],
 153   AS_HELP_STRING([--disable-deprecated],[omit deprecated features]))
 154
 155 if test "$enable_deprecated" = no; then
 156   SCM_I_GSC_ENABLE_DEPRECATED=0
 157   warn_default=no
 158 else
 159   if test "$enable_deprecated" = yes || test "$enable_deprecated" = ""; then
 160     warn_default=summary
 161   elif test "$enable_deprecated" = shutup; then
 162     warn_default=no
 163   else
 164     warn_default=$enable_deprecated
 165   fi
 166   SCM_I_GSC_ENABLE_DEPRECATED=1
 167 fi
 168 AC_DEFINE_UNQUOTED([SCM_WARN_DEPRECATED_DEFAULT], "$warn_default",
 169 [Define this to control the default warning level for deprecated features.])
 170
 171 AC_ARG_ENABLE(elisp,
 172   [  --disable-elisp         omit Emacs Lisp support],,
 173   enable_elisp=yes)
 174
 175 dnl  Added the following configure option in January 2008 following
 176 dnl  investigation of problems with "64" system and library calls on
 177 dnl  Darwin (MacOS X).  The libguile code (_scm.h) assumes that if a
 178 dnl  system has stat64, it will have all the other 64 APIs too; but on
 179 dnl  Darwin, stat64 is there but other APIs are missing.
 180 dnl
 181 dnl  It also appears, from the Darwin docs, that most system call APIs
 182 dnl  there (i.e. the traditional ones _without_ "64" in their names) have
 183 dnl  been 64-bit-capable for a long time now, so it isn't necessary to
 184 dnl  use "64" versions anyway.  For example, Darwin's off_t is 64-bit.
 185 dnl
 186 dnl  A similar problem has been reported for HP-UX:
 187 dnl  http://www.nabble.com/Building-guile-1.8.2-on-hpux-td13106681.html
 188 dnl
 189 dnl  Therefore, and also because a Guile without LARGEFILE64 support is
 190 dnl  better than no Guile at all, we provide this option to suppress
 191 dnl  trying to use "64" calls.
 192 dnl
 193 dnl  It may be that for some 64-bit function on Darwin/HP-UX we do need
 194 dnl  to use a "64" call, and hence that by using --without-64-calls we're
 195 dnl  missing out on that.  If so, someone can work on that in the future.
 196 dnl  For now, --without-64-calls allows Guile to build on OSs where it
 197 dnl  wasn't building before.
 198 AC_MSG_CHECKING([whether to use system and library "64" calls])
 199 AC_ARG_WITH([64-calls],
 200   AS_HELP_STRING([--without-64-calls],
 201                  [don't attempt to use system and library calls with "64" in their names]),
 202   [use_64_calls=$withval],
 203   [use_64_calls=yes
 204    case $host in
 205      *-apple-darwin* )
 206        use_64_calls=no
 207        ;;
 208      powerpc-ibm-aix* )
 209        use_64_calls=no
 210        ;;
 211    esac])
 212 AC_MSG_RESULT($use_64_calls)
 213 case "$use_64_calls" in
 214   y* )
 215     AC_DEFINE([GUILE_USE_64_CALLS], 1,
 216       [Define to 1 in order to try to use "64" versions of system and library calls.])
 217     ;;
 218 esac
 219
 220 #--------------------------------------------------------------------
 221
 222 dnl Check for dynamic linking
 223
 224 use_modules=yes
 225 AC_ARG_WITH(modules,
 226 [  --with-modules[=FILES]  Add support for dynamic modules],
 227 use_modules="$withval")
 228 test -z "$use_modules" && use_modules=yes
 229 DLPREOPEN=
 230 if test "$use_modules" != no; then
 231   if test "$use_modules" = yes; then
 232     DLPREOPEN="-dlpreopen force"
 233   else
 234     DLPREOPEN="-export-dynamic"
 235     for module in $use_modules; do
 236       DLPREOPEN="$DLPREOPEN -dlopen $module"
 237     done
 238   fi
 239 fi
 240
 241 dnl files which are destined for separate modules.
 242
 243 if test "$use_modules" != no; then
 244    AC_LIBOBJ([dynl])
 245 fi
 246
 247 if test "$enable_posix" = yes; then
 248    AC_LIBOBJ([filesys])
 249    AC_LIBOBJ([posix])
 250    AC_DEFINE([HAVE_POSIX], 1,
 251      [Define this if you want support for POSIX system calls in Guile.])
 252 fi
 253
 254 if test "$enable_networking" = yes; then
 255    AC_LIBOBJ([net_db])
 256    AC_LIBOBJ([socket])
 257    AC_DEFINE([HAVE_NETWORKING], 1,
 258      [Define this if you want support for networking in Guile.])
 259 fi
 260
 261 if test "$enable_debug_malloc" = yes; then
 262    AC_LIBOBJ([debug-malloc])
 263 fi
 264
 265 if test "$enable_elisp" = yes; then
 266   SCM_I_GSC_ENABLE_ELISP=1
 267 else
 268   SCM_I_GSC_ENABLE_ELISP=0
 269 fi
 270 AC_CHECK_LIB(uca, __uc_get_ar_bsp)
 271
 272 AC_C_CONST
 273
 274 # "volatile" is used in a couple of tests below.
 275 AC_C_VOLATILE
 276
 277 AC_C_INLINE
 278 if test "$ac_cv_c_inline" != no; then
 279   SCM_I_GSC_C_INLINE="\"${ac_cv_c_inline}\""
 280 else
 281   SCM_I_GSC_C_INLINE=NULL
 282 fi
 283 AC_CHECK_LIB(uca, __uc_get_ar_bsp)
 284
 285 AC_C_BIGENDIAN
 286
 287 AC_C_LABELS_AS_VALUES
 288
 289 AC_CHECK_SIZEOF(char)
 290 AC_CHECK_SIZEOF(unsigned char)
 291 AC_CHECK_SIZEOF(short)
 292 AC_CHECK_SIZEOF(unsigned short)
 293 AC_CHECK_SIZEOF(int)
 294 AC_CHECK_SIZEOF(unsigned int)
 295 AC_CHECK_SIZEOF(long)
 296 AC_CHECK_SIZEOF(unsigned long)
 297 AC_CHECK_SIZEOF(size_t)
 298 AC_CHECK_SIZEOF(long long)
 299 AC_CHECK_SIZEOF(unsigned long long)
 300 AC_CHECK_SIZEOF(__int64)
 301 AC_CHECK_SIZEOF(unsigned __int64)
 302 AC_CHECK_SIZEOF(void *)
 303 AC_CHECK_SIZEOF(intptr_t)
 304 AC_CHECK_SIZEOF(uintptr_t)
 305 AC_CHECK_SIZEOF(ptrdiff_t)
 306 AC_CHECK_SIZEOF(size_t)
 307 AC_CHECK_SIZEOF(off_t)
 308
 309 if test "$ac_cv_sizeof_long" -ne "$ac_cv_sizeof_void_p"; then
 310   AC_MSG_ERROR(sizes of long and void* are not identical)
 311 fi
 312
 313 if test "$ac_cv_sizeof_ptrdiff_t" -ne 0; then
 314   SCM_I_GSC_T_PTRDIFF='"ptrdiff_t"'
 315 else
 316   SCM_I_GSC_T_PTRDIFF='"long"'
 317 fi
 318 AC_SUBST([SCM_I_GSC_T_PTRDIFF])
 319
 320 AC_CHECK_HEADERS([stdint.h])
 321 AC_CHECK_HEADERS([inttypes.h])
 322
 323 AC_CHECK_SIZEOF(intmax_t)
 324
 325 SCM_I_GSC_NEEDS_STDINT_H=0
 326 SCM_I_GSC_NEEDS_INTTYPES_H=0
 327
 328 ### intptr and uintptr (try not to use inttypes if we don't have to)
 329 if test "$ac_cv_header_inttypes_h" = yes; then
 330   if test "$ac_cv_sizeof_intptr_t" -eq 0; then
 331     AC_CHECK_SIZEOF([intptr_t],,[#include <inttypes.h>
 332 #include <stdio.h>])
 333     if test "$ac_cv_sizeof_intptr_t" -ne 0; then
 334       SCM_I_GSC_NEEDS_INTTYPES_H=1
 335     fi
 336   fi
 337   if test "$ac_cv_sizeof_uintptr_t" -eq 0; then
 338     AC_CHECK_SIZEOF([uintptr_t],,[#include <inttypes.h>
 339 #include <stdio.h>])
 340     if test "$ac_cv_sizeof_uintptr_t" -ne 0; then
 341       SCM_I_GSC_NEEDS_INTTYPES_H=1
 342     fi
 343   fi
 344 fi
 345
 346 ### See what's provided by stdint.h
 347 if test "$ac_cv_header_stdint_h" = yes; then
 348    AC_CHECK_TYPE([int8_t],[scm_stdint_has_int8=1],,[#include <stdint.h>])
 349    AC_CHECK_TYPE([uint8_t],[scm_stdint_has_uint8=1],,[#include <stdint.h>])
 350    AC_CHECK_TYPE([int16_t],[scm_stdint_has_int16=1],,[#include <stdint.h>])
 351    AC_CHECK_TYPE([uint16_t],[scm_stdint_has_uint16=1],,[#include <stdint.h>])
 352    AC_CHECK_TYPE([int32_t],[scm_stdint_has_int32=1],,[#include <stdint.h>])
 353    AC_CHECK_TYPE([uint32_t],[scm_stdint_has_uint32=1],,[#include <stdint.h>])
 354    AC_CHECK_TYPE([int64_t],[scm_stdint_has_int64=1],,[#include <stdint.h>])
 355    AC_CHECK_TYPE([uint64_t],[scm_stdint_has_uint64=1],,[#include <stdint.h>])
 356    AC_CHECK_TYPE([intmax_t],[scm_stdint_has_intmax=1],,[#include <stdint.h>])
 357    AC_CHECK_TYPE([uintmax_t],[scm_stdint_has_uintmax=1],,[#include <stdint.h>])
 358    AC_CHECK_TYPE([intptr_t],[scm_stdint_has_intptr=1],,[#include <stdint.h>])
 359    AC_CHECK_TYPE([uintptr_t],[scm_stdint_has_uintptr=1],,[#include <stdint.h>])
 360 fi
 361
 362 # so we don't get confused by the cache (wish there was a better way
 363 # to check particular headers for the same type...)
 364
 365 unset ac_cv_type_int8_t
 366 unset ac_cv_type_uint8_t
 367 unset ac_cv_type_int16_t
 368 unset ac_cv_type_uint16_t
 369 unset ac_cv_type_int32_t
 370 unset ac_cv_type_uint32_t
 371 unset ac_cv_type_int64_t
 372 unset ac_cv_type_uint64_t
 373 unset ac_cv_type_intmax_t
 374 unset ac_cv_type_uintmax_t
 375
 376 ### See what's provided by inttypes.h
 377 if test "$ac_cv_header_inttypes_h" = yes; then
 378   AC_CHECK_TYPE([int8_t],[scm_inttypes_has_int8=1],,[#include <inttypes.h>])
 379   AC_CHECK_TYPE([uint8_t],[scm_inttypes_has_uint8=1],,[#include <inttypes.h>])
 380   AC_CHECK_TYPE([int16_t],[scm_inttypes_has_int16=1],,[#include <inttypes.h>])
 381   AC_CHECK_TYPE([uint16_t],[scm_inttypes_has_uint16=1],,[#include <inttypes.h>])
 382   AC_CHECK_TYPE([int32_t],[scm_inttypes_has_int32=1],,[#include <inttypes.h>])
 383   AC_CHECK_TYPE([uint32_t],[scm_inttypes_has_uint32=1],,[#include <inttypes.h>])
 384   AC_CHECK_TYPE([int64_t],[scm_inttypes_has_int64=1],,[#include <inttypes.h>])
 385   AC_CHECK_TYPE([uint64_t],[scm_inttypes_has_uint64=1],,[#include <inttypes.h>])
 386   AC_CHECK_TYPE([intmax_t],[scm_inttypes_has_intmax=1],,[#include <inttypes.h>])
 387   AC_CHECK_TYPE([uintmax_t],[scm_inttypes_has_uintmax=1],,[#include <inttypes.h>])
 388   AC_CHECK_TYPE([intptr_t],[scm_inttypes_has_intptr=1],,[#include <inttypes.h>])
 389   AC_CHECK_TYPE([uintptr_t],[scm_inttypes_has_uintptr=1],,[#include <inttypes.h>])
 390 fi
 391
 392 # Try hard to find definitions for some required scm_t_*int* types.
 393
 394 ### Required type scm_t_int8
 395 if test "$scm_stdint_has_int8"; then
 396   SCM_I_GSC_T_INT8='"int8_t"'
 397   SCM_I_GSC_NEEDS_STDINT_H=1
 398 elif test "$scm_inttypes_has_int8"; then
 399   SCM_I_GSC_T_INT8='"int8_t"'
 400   SCM_I_GSC_NEEDS_INTTYPES_H=1
 401 elif test "$ac_cv_sizeof_char" -eq 1; then
 402   SCM_I_GSC_T_INT8='"signed char"'
 403 else
 404   AC_MSG_ERROR([Can't find appropriate type for scm_t_int8.])
 405 fi
 406 AC_SUBST([SCM_I_GSC_T_INT8])
 407
 408 ### Required type scm_t_uint8
 409 if test "$scm_stdint_has_uint8"; then
 410   SCM_I_GSC_T_UINT8='"uint8_t"'
 411   SCM_I_GSC_NEEDS_STDINT_H=1
 412 elif test "$scm_inttypes_has_uint8"; then
 413   SCM_I_GSC_T_UINT8='"uint8_t"'
 414   SCM_I_GSC_NEEDS_INTTYPES_H=1
 415 elif test "$ac_cv_sizeof_unsigned_char" -eq 1; then
 416   SCM_I_GSC_T_UINT8='"unsigned char"'
 417 else
 418   AC_MSG_ERROR([Can't find appropriate type for scm_t_uint8.])
 419 fi
 420 AC_SUBST([SCM_I_GSC_T_UINT8])
 421
 422 ### Required type scm_t_int16 (ANSI C says int or short might work)
 423 if test "$scm_stdint_has_int16"; then
 424   SCM_I_GSC_T_INT16='"int16_t"'
 425   SCM_I_GSC_NEEDS_STDINT_H=1
 426 elif test "$scm_inttypes_has_int16"; then
 427   SCM_I_GSC_T_INT16='"int16_t"'
 428   SCM_I_GSC_NEEDS_INTTYPES_H=1
 429 elif test "$ac_cv_sizeof_int" -eq 2; then
 430   SCM_I_GSC_T_INT16='"int"'
 431 elif test "$ac_cv_sizeof_short" -eq 2; then
 432   SCM_I_GSC_T_INT16='"short"'
 433 else
 434   AC_MSG_ERROR([Can't find appropriate type for scm_t_int16.])
 435 fi
 436 AC_SUBST([SCM_I_GSC_T_INT16])
 437
 438 ### Required type scm_t_uint16 (ANSI C says int or short might work)
 439 if test "$scm_stdint_has_uint16"; then
 440   SCM_I_GSC_T_UINT16='"uint16_t"'
 441   SCM_I_GSC_NEEDS_STDINT_H=1
 442 elif test "$scm_inttypes_has_uint16"; then
 443   SCM_I_GSC_T_UINT16='"uint16_t"'
 444   SCM_I_GSC_NEEDS_INTTYPES_H=1
 445 elif test "$ac_cv_sizeof_unsigned_int" -eq 2; then
 446   SCM_I_GSC_T_UINT16='"unsigned int"'
 447 elif test "$ac_cv_sizeof_unsigned_short" -eq 2; then
 448   SCM_I_GSC_T_UINT16='"unsigned short"'
 449 else
 450   AC_MSG_ERROR([Can't find appropriate type for scm_t_uint16.])
 451 fi
 452 AC_SUBST([SCM_I_GSC_T_UINT16])
 453
 454
 455 ### Required type scm_t_int32 (ANSI C says int, short, or long might work)
 456 if test "$scm_stdint_has_int32"; then
 457   SCM_I_GSC_T_INT32='"int32_t"'
 458   SCM_I_GSC_NEEDS_STDINT_H=1
 459 elif test "$scm_inttypes_has_int32"; then
 460   SCM_I_GSC_T_INT32='"int32_t"'
 461   SCM_I_GSC_NEEDS_INTTYPES_H=1
 462 elif test "$ac_cv_sizeof_int" -eq 4; then
 463   SCM_I_GSC_T_INT32='"int"'
 464 elif test "$ac_cv_sizeof_long" -eq 4; then
 465   SCM_I_GSC_T_INT32='"long"'
 466 elif test "$ac_cv_sizeof_short" -eq 4; then
 467   SCM_I_GSC_T_INT32='"short"'
 468 else
 469   AC_MSG_ERROR([Can't find appropriate type for scm_t_int32.])
 470 fi
 471 AC_SUBST([SCM_I_GSC_T_INT32])
 472
 473 ### Required type scm_t_uint32 (ANSI C says int, short, or long might work)
 474 if test "$scm_stdint_has_uint32"; then
 475   SCM_I_GSC_T_UINT32='"uint32_t"'
 476   SCM_I_GSC_NEEDS_STDINT_H=1
 477 elif test "$scm_inttypes_has_uint32"; then
 478   SCM_I_GSC_T_UINT32='"uint32_t"'
 479   SCM_I_GSC_NEEDS_INTTYPES_H=1
 480 elif test "$ac_cv_sizeof_unsigned_int" -eq 4; then
 481   SCM_I_GSC_T_UINT32='"unsigned int"'
 482 elif test "$ac_cv_sizeof_unsigned_long" -eq 4; then
 483   SCM_I_GSC_T_UINT32='"unsigned long"'
 484 elif test "$ac_cv_sizeof_unsigned_short" -eq 4; then
 485   SCM_I_GSC_T_UINT32='"unsigned short"'
 486 else
 487   AC_MSG_ERROR([Can't find appropriate type for scm_t_uint32.])
 488 fi
 489 AC_SUBST([SCM_I_GSC_T_UINT32])
 490
 491 ### Optional type scm_t_int64 (ANSI C says int, short, or long might work)
 492 ### Also try 'long long' and '__int64' if we have it.
 493 SCM_I_GSC_T_INT64=0
 494 if test "$scm_stdint_has_int64"; then
 495   SCM_I_GSC_T_INT64='"int64_t"'
 496   SCM_I_GSC_NEEDS_STDINT_H=1
 497 elif test "$scm_inttypes_has_int64"; then
 498   SCM_I_GSC_T_INT64='"int64_t"'
 499   SCM_I_GSC_NEEDS_INTTYPES_H=1
 500 elif test "$ac_cv_sizeof_int" -eq 8; then
 501   SCM_I_GSC_T_INT64='"int"'
 502 elif test "$ac_cv_sizeof_long" -eq 8; then
 503   SCM_I_GSC_T_INT64='"long"'
 504 elif test "$ac_cv_sizeof_short" -eq 8; then
 505   SCM_I_GSC_T_INT64='"short"'
 506 elif test "$ac_cv_sizeof_long_long" -eq 8; then
 507   SCM_I_GSC_T_INT64='"long long"'
 508 elif test "$ac_cv_sizeof___int64" -eq 8; then
 509   SCM_I_GSC_T_INT64='"__int64"'
 510 else
 511   AC_MSG_ERROR([Can't find appropriate type for scm_t_int64.])
 512 fi
 513 AC_SUBST([SCM_I_GSC_T_INT64])
 514
 515
 516 ### Optional type scm_t_uint64 (ANSI C says int, short, or long might work)
 517 ### Also try 'long long' and '__int64' if we have it.
 518 SCM_I_GSC_T_UINT64=0
 519 if test "$scm_stdint_has_uint64"; then
 520   SCM_I_GSC_T_UINT64='"uint64_t"'
 521   SCM_I_GSC_NEEDS_STDINT_H=1
 522 elif test "$scm_inttypes_has_uint64"; then
 523   SCM_I_GSC_T_UINT64='"uint64_t"'
 524   SCM_I_GSC_NEEDS_INTTYPES_H=1
 525 elif test "$ac_cv_sizeof_unsigned_int" -eq 8; then
 526   SCM_I_GSC_T_UINT64='"unsigned int"'
 527 elif test "$ac_cv_sizeof_unsigned_long" -eq 8; then
 528   SCM_I_GSC_T_UINT64='"unsigned long"'
 529 elif test "$ac_cv_sizeof_unsigned_short" -eq 8; then
 530   SCM_I_GSC_T_UINT64='"unsigned short"'
 531 elif test "$ac_cv_sizeof_unsigned_long_long" -eq 8; then
 532   SCM_I_GSC_T_UINT64='"unsigned long long"'
 533 elif test "$ac_cv_sizeof_unsigned___int64" -eq 8; then
 534   SCM_I_GSC_T_UINT64='"unsigned __int64"'
 535 else
 536   AC_MSG_ERROR([Can't find appropriate type for scm_t_uint64.])
 537 fi
 538 AC_SUBST([SCM_I_GSC_T_UINT64])
 539
 540 ### Required type scm_t_intmax
 541 ###
 542 ### We try 'intmax_t', '__int64', 'long long' in this order.  When
 543 ### none of them is available, we use 'long'.
 544 ###
 545 SCM_I_GSC_T_INTMAX=0
 546 if test "$scm_stdint_has_intmax"; then
 547   SCM_I_GSC_T_INTMAX='"intmax_t"'
 548   SCM_I_GSC_NEEDS_STDINT_H=1
 549 elif test "$scm_inttypes_has_intmax"; then
 550   SCM_I_GSC_T_INTMAX='"intmax_t"'
 551   SCM_I_GSC_NEEDS_INTTYPES_H=1
 552 elif test "$ac_cv_sizeof___int64" -ne 0; then
 553   SCM_I_GSC_T_INTMAX='"__int64"'
 554 elif test "$ac_cv_sizeof_long_long" -ne 0; then
 555   SCM_I_GSC_T_INTMAX='"long long"'
 556 else
 557   SCM_I_GSC_T_INTMAX='"long"'
 558 fi
 559 AC_SUBST([SCM_I_GSC_T_INTMAX])
 560
 561 ### Required type scm_t_uintmax
 562 ###
 563 ### We try 'uintmax_t', 'unsigned __int64', 'unsigned long long' in
 564 ### this order.  When none of them is available, we use 'unsigned long'.
 565 ###
 566 SCM_I_GSC_T_UINTMAX=0
 567 if test "$scm_stdint_has_uintmax"; then
 568   SCM_I_GSC_T_UINTMAX='"uintmax_t"'
 569   SCM_I_GSC_NEEDS_STDINT_H=1
 570 elif test "$scm_inttypes_has_uintmax"; then
 571   SCM_I_GSC_T_UINTMAX='"uintmax_t"'
 572   SCM_I_GSC_NEEDS_INTTYPES_H=1
 573 elif test "$ac_cv_sizeof_unsigned___int64" -ne 0; then
 574   SCM_I_GSC_T_UINTMAX='"unsigned __int64"'
 575 elif test "$ac_cv_sizeof_unsigned_long_long" -ne 0; then
 576   SCM_I_GSC_T_UINTMAX='"unsigned long long"'
 577 else
 578   SCM_I_GSC_T_UINTMAX='"unsigned long"'
 579 fi
 580 AC_SUBST([SCM_I_GSC_T_UINTMAX])
 581
 582 ### Required type scm_t_intptr
 583 ###
 584 SCM_I_GSC_T_INTPTR=0
 585 if test "$scm_stdint_has_intptr"; then
 586   SCM_I_GSC_T_INTPTR='"intptr_t"'
 587   SCM_I_GSC_NEEDS_STDINT_H=1
 588 elif test "$scm_inttypes_has_intptr"; then
 589   SCM_I_GSC_T_INTPTR='"intptr_t"'
 590   SCM_I_GSC_NEEDS_INTTYPES_H=1
 591 elif test "$ac_cv_sizeof_int" = "$ac_cv_sizeof_void_p"; then
 592   SCM_I_GSC_T_INTPTR='"int"'
 593 elif test "$ac_cv_sizeof_long" = "$ac_cv_sizeof_void_p"; then
 594   SCM_I_GSC_T_INTPTR='"long"'
 595 elif test "$ac_cv_sizeof_long_long" = "$ac_cv_sizeof_void_p"; then
 596   SCM_I_GSC_T_INTPTR='"long long"'
 597 else
 598   AC_MSG_ERROR([Can't find appropriate type for `scm_t_intptr'.])
 599 fi
 600 AC_SUBST([SCM_I_GSC_T_INTPTR])
 601
 602 ### Required type scm_t_uintptr
 603 ###
 604 SCM_I_GSC_T_UINTPTR=0
 605 if test "$scm_stdint_has_uintptr"; then
 606   SCM_I_GSC_T_UINTPTR='"uintptr_t"'
 607   SCM_I_GSC_NEEDS_STDINT_H=1
 608 elif test "$scm_inttypes_has_uintptr"; then
 609   SCM_I_GSC_T_UINTPTR='"uintptr_t"'
 610   SCM_I_GSC_NEEDS_INTTYPES_H=1
 611 elif test "$ac_cv_sizeof_int" = "$ac_cv_sizeof_void_p"; then
 612   SCM_I_GSC_T_UINTPTR='"unsigned int"'
 613 elif test "$ac_cv_sizeof_long" = "$ac_cv_sizeof_void_p"; then
 614   SCM_I_GSC_T_UINTPTR='"unsigned long"'
 615 elif test "$ac_cv_sizeof_long_long" = "$ac_cv_sizeof_void_p"; then
 616   SCM_I_GSC_T_UINTPTR='"unsigned long long"'
 617 else
 618   AC_MSG_ERROR([Can't find appropriate type for `scm_t_uintptr'.])
 619 fi
 620 AC_SUBST([SCM_I_GSC_T_UINTPTR])
 621
 622
 623 AC_SUBST([SCM_I_GSC_NEEDS_STDINT_H])
 624 AC_SUBST([SCM_I_GSC_NEEDS_INTTYPES_H])
 625
 626 AC_HEADER_STDC
 627 AC_HEADER_TIME
 628 AC_HEADER_SYS_WAIT
 629 AC_HEADER_DIRENT
 630
 631 # Reason for checking:
 632 #
 633 #   HP-UX 11.11 (at least) doesn't provide `struct dirent64', even
 634 #   with `_LARGEFILE64_SOURCE', so check whether it's available.
 635 #
 636 AC_CHECK_MEMBER([struct dirent64.d_name],
 637   [SCM_I_GSC_HAVE_STRUCT_DIRENT64=1], [SCM_I_GSC_HAVE_STRUCT_DIRENT64=0],
 638   [ #ifndef _LARGEFILE64_SOURCE
 639     # define _LARGEFILE64_SOURCE
 640     #endif
 641
 642     /* Per Autoconf manual.  */
 643     #include <sys/types.h>
 644     #ifdef HAVE_DIRENT_H
 645     # include <dirent.h>
 646     #else
 647     # define dirent direct
 648     # ifdef HAVE_SYS_NDIR_H
 649     #  include <sys/ndir.h>
 650     # endif
 651     # ifdef HAVE_SYS_DIR_H
 652     #  include <sys/dir.h>
 653     # endif
 654     # ifdef HAVE_NDIR_H
 655     #  include <ndir.h>
 656     # endif
 657     #endif ])
 658 AC_SUBST([SCM_I_GSC_HAVE_STRUCT_DIRENT64])
 659
 660 # Reasons for testing:
 661 #   complex.h - new in C99
 662 #   fenv.h - available in C99, but not older systems
 663 #   machine/fpu.h - on Tru64 5.1b, the declaration of fesetround(3) is in
 664 #     this file instead of <fenv.h>
 665 #   process.h - mingw specific
 666 #   langinfo.h, nl_types.h - SuS v2
 667 #
 668 AC_CHECK_HEADERS([complex.h fenv.h io.h libc.h limits.h malloc.h memory.h process.h string.h \
 669 regex.h rxposix.h rx/rxposix.h sys/dir.h sys/ioctl.h sys/select.h \
 670 sys/time.h sys/timeb.h sys/times.h sys/stdtypes.h sys/types.h \
 671 sys/utime.h time.h unistd.h utime.h pwd.h grp.h sys/utsname.h \
 672 direct.h langinfo.h nl_types.h machine/fpu.h])
 673
 674 # Reasons for testing:
 675 #   nl_item - lacking on Cygwin
 676 AC_CHECK_TYPES([nl_item], [], [],
 677   [[#ifdef HAVE_LANGINFO_H
 678     # include <langinfo.h>
 679     #endif
 680     #ifdef HAVE_NL_TYPES_H
 681     # include <nl_types.h>
 682     #endif]])
 683
 684 # "complex double" is new in C99, and "complex" is only a keyword if
 685 # <complex.h> is included
 686 AC_CHECK_TYPES(complex double,,,
 687 [#if HAVE_COMPLEX_H
 688 #include <complex.h>
 689 #endif])
 690
 691 # On MacOS X <sys/socklen.h> contains socklen_t, so must include that
 692 # when testing.
 693 AC_CHECK_TYPE(socklen_t, ,
 694   [AC_DEFINE_UNQUOTED([socklen_t], int,
 695                       [Define to `int' if <sys/socket.h> does not define.])],
 696   [#if HAVE_SYS_TYPES_H
 697 #include <sys/types.h>
 698 #endif
 699 #include <sys/socket.h>
 700 ])
 701 AC_CHECK_TYPE(struct ip_mreq)
 702
 703 GUILE_HEADER_LIBC_WITH_UNISTD
 704
 705 AC_TYPE_GETGROUPS
 706 AC_TYPE_SIGNAL
 707 AC_TYPE_MODE_T
 708
 709 # On mingw -lm is empty, so this test is unnecessary, but it's
 710 # harmless so we don't hard-code to suppress it.
 711 #
 712 AC_CHECK_LIB(m, cos)
 713
 714 AC_CHECK_FUNCS(gethostbyname)
 715 if test $ac_cv_func_gethostbyname = no; then
 716     AC_CHECK_LIB(nsl, gethostbyname)
 717 fi
 718
 719 AC_CHECK_FUNCS(connect)
 720 if test $ac_cv_func_connect = no; then
 721     AC_CHECK_LIB(socket, connect)
 722 fi
 723
 724 dnl
 725 dnl Check for Winsock and other functionality on Win32 (*not* CygWin)
 726 dnl
 727 EXTRA_DEFS=""
 728 case $host in
 729   *-*-mingw*)
 730     AC_CHECK_HEADER(winsock2.h, [AC_DEFINE([HAVE_WINSOCK2_H], 1,
 731       [Define if you have the <winsock2.h> header file.])])
 732     AC_CHECK_LIB(ws2_32, main)
 733     AC_LIBOBJ([win32-uname])
 734     AC_LIBOBJ([win32-dirent])
 735     if test "$enable_networking" = yes ; then
 736       AC_LIBOBJ([win32-socket])
 737     fi
 738     if test "$enable_shared" = yes ; then
 739       EXTRA_DEFS="-DSCM_IMPORT"
 740       AC_DEFINE([USE_DLL_IMPORT], 1,
 741         [Define if you need additional CPP macros on Win32 platforms.])
 742     fi
 743     ;;
 744 esac
 745 AC_SUBST(EXTRA_DEFS)
 746
 747 # Reasons for testing:
 748 #   crt_externs.h - Darwin specific
 749 #
 750 AC_CHECK_HEADERS([assert.h crt_externs.h])
 751
 752 # Reasons for testing:
 753 #   DINFINITY - OSF specific
 754 #   DQNAN - OSF specific
 755 #       (DINFINITY and DQNAN are actually global variables, not functions)
 756 #   chsize - an MS-DOS-ism, found in mingw
 757 #   cexp, clog - not in various pre-c99 systems, and note that it's possible
 758 #       for gcc to provide the "complex double" type but the system to not
 759 #       have functions like cexp and clog
 760 #   clog10 - not in mingw (though others like clog and csqrt are)
 761 #   fesetround - available in C99, but not older systems
 762 #   ftruncate - posix, but probably not older systems (current mingw
 763 #               has it as an inline for chsize)
 764 #   ioctl - not in mingw.
 765 #   gmtime_r - recent posix, not on old systems
 766 #   pipe - not in mingw
 767 #   _pipe - specific to mingw, taking 3 args
 768 #   readdir_r - recent posix, not on old systems
 769 #   readdir64_r - not available on HP-UX 11.11
 770 #   stat64 - SuS largefile stuff, not on old systems
 771 #   sysconf - not on old systems
 772 #   truncate - not in mingw
 773 #   isblank - available as a GNU extension or in C99
 774 #   _NSGetEnviron - Darwin specific
 775 #   strcoll_l, newlocale - GNU extensions (glibc), also available on Darwin
 776 #   nl_langinfo - X/Open, not available on Windows.
 777 #   utimensat: posix.1-2008
 778 #
 779 AC_CHECK_FUNCS([DINFINITY DQNAN cexp chsize clog clog10 ctermid fesetround ftime ftruncate fchown getcwd geteuid getsid gettimeofday gmtime_r ioctl lstat mkdir mknod nice pipe _pipe readdir_r readdir64_r readlink rename rmdir select setegid seteuid setlocale setpgid setsid sigaction siginterrupt stat64 strftime strptime symlink sync sysconf tcgetpgrp tcsetpgrp times uname waitpid strdup system usleep atexit on_exit chown link fcntl ttyname getpwent getgrent kill getppid getpgrp fork setitimer getitimer strchr strcmp index bcopy memcpy rindex truncate unsetenv isblank _NSGetEnviron strcoll strcoll_l newlocale nl_langinfo utimensat])
 780
 781 # Reasons for testing:
 782 #   netdb.h - not in mingw
 783 #   sys/param.h - not in mingw
 784 #   pthread.h - only available with pthreads.  ACX_PTHREAD doesn't
 785 #       check this specifically, we need it for the timespec test below.
 786 #   sethostname - the function itself check because it's not in mingw,
 787 #       the DECL is checked because Solaris 10 doens't have in any header
 788 #   hstrerror - on Tru64 5.1b the symbol is available in libc but the
 789 #       declaration isn't anywhere.
 790 #   cuserid - on Tru64 5.1b the declaration is documented to be available
 791 #       only with `_XOPEN_SOURCE' or some such.
 792 #
 793 AC_CHECK_HEADERS([crypt.h netdb.h pthread.h sys/param.h sys/resource.h sys/file.h])
 794 AC_CHECK_FUNCS(chroot flock getlogin cuserid getpriority setpriority getpass sethostname gethostname)
 795 AC_CHECK_DECLS([sethostname, hstrerror, cuserid])
 796
 797 # crypt() may or may not be available, for instance in some countries there
 798 # are restrictions on cryptography.
 799 #
 800 # crypt() might be in libc (eg. OpenBSD), or it might be in a separate
 801 # -lcrypt library (eg. Debian GNU/Linux).
 802 #
 803 # On HP-UX 11, crypt() is in libc and there's a dummy libcrypt.a.  We must
 804 # be careful to avoid -lcrypt in this case, since libtool will see there's
 805 # only a static libcrypt and decide to build only a static libguile.
 806 #
 807 # AC_SEARCH_LIBS lets us add -lcrypt to LIBS only if crypt() is not in the
 808 # libraries already in that list.
 809 #
 810 AC_SEARCH_LIBS(crypt, crypt,
 811   [AC_DEFINE([HAVE_CRYPT],1,
 812              [Define to 1 if you have the `crypt' function.])])
 813
 814 # When compiling with GCC on some OSs (Solaris, AIX), _Complex_I doesn't
 815 # work; in the reported cases so far, 1.0fi works well instead.  According
 816 # to the C99 spec, the complex.h header must provide a working definition
 817 # of _Complex_I, so we always try _Complex_I first.  The 1.0fi fallback
 818 # is a workaround for the failure of some systems to conform to C99.
 819 if test "$ac_cv_type_complex_double" = yes; then
 820   AC_MSG_CHECKING([for i])
 821   AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
 822 #if HAVE_COMPLEX_H
 823 #include <complex.h>
 824 #endif
 825 complex double z;
 826 ]], [[
 827 z = _Complex_I;
 828 ]])],
 829     [AC_DEFINE([GUILE_I],_Complex_I,[The imaginary unit (positive square root of -1).])
 830      AC_MSG_RESULT([_Complex_I])],
 831     [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
 832 #if HAVE_COMPLEX_H
 833 #include <complex.h>
 834 #endif
 835 complex double z;
 836 ]],[[
 837 z = 1.0fi;
 838 ]])],
 839   [AC_DEFINE([GUILE_I],1.0fi)
 840    AC_MSG_RESULT([1.0fi])],
 841   [ac_cv_type_complex_double=no
 842    AC_MSG_RESULT([not available])])])
 843 fi
 844
 845 # glibc 2.3.6 (circa 2006) and various prior versions had a bug where
 846 # csqrt(-i) returned a negative real part, when it should be positive
 847 # for the principal root.
 848 #
 849 if test "$ac_cv_type_complex_double" = yes; then
 850
 851   AC_CACHE_CHECK([whether csqrt is usable],
 852     guile_cv_use_csqrt,
 853     [AC_RUN_IFELSE([AC_LANG_SOURCE([[
 854 #include <complex.h>
 855 /* "volatile" is meant to prevent gcc from calculating the sqrt as a
 856    constant, we want to test libc. */
 857 volatile complex double z = - _Complex_I;
 858 int
 859 main (void)
 860 {
 861   z = csqrt (z);
 862   if (creal (z) > 0.0)
 863     return 0;  /* good */
 864   else
 865     return 1;  /* bad */
 866 }]])],
 867     [guile_cv_use_csqrt=yes],
 868     [guile_cv_use_csqrt="no, glibc 2.3 bug"],
 869     [guile_cv_use_csqrt="yes, hopefully (cross-compiling)"])])
 870   case $guile_cv_use_csqrt in
 871     yes*)
 872       AC_DEFINE([HAVE_USABLE_CSQRT], 1, [Define to 1 if csqrt is bug-free])
 873       ;;
 874   esac
 875 fi
 876
 877
 878 dnl GMP tests
 879 AC_LIB_HAVE_LINKFLAGS(gmp,
 880   [],
 881   [#include <gmp.h>],
 882   [mpz_import (0, 0, 0, 0, 0, 0, 0);],
 883   AC_MSG_ERROR([GNU MP 4.1 or greater not found, see README]))
 884
 885 dnl GNU libunistring is checked for by Gnulib's `libunistring' module.
 886 if test "x$LTLIBUNISTRING" != "x"; then
 887   LIBS="$LTLIBUNISTRING $LIBS"
 888 else
 889   AC_MSG_ERROR([GNU libunistring is required, please install it.])
 890 fi
 891
 892 dnl Libffi is needed to compile Guile's foreign function interface, but its
 893 dnl interface isn't exposed in Guile's API.
 894 PKG_CHECK_MODULES(LIBFFI, libffi)
 895 AC_SUBST(LIBFFI_CFLAGS)
 896 AC_SUBST(LIBFFI_LIBS)
 897
 898 dnl figure out approriate ffi type for size_t
 899 AC_CHECK_SIZEOF(size_t)
 900 AC_CHECK_SIZEOF(ssize_t)
 901 ffi_size_type=uint$(($ac_cv_sizeof_size_t*8))
 902 ffi_ssize_type=sint$(($ac_cv_sizeof_ssize_t*8))
 903 AC_DEFINE_UNQUOTED(ffi_type_size_t, ffi_type_${ffi_size_type},
 904                    [ffi type for size_t])
 905 AC_DEFINE_UNQUOTED(ffi_type_ssize_t, ffi_type_${ffi_ssize_type},
 906                    [ffi type for ssize_t])
 907
 908 dnl i18n tests
 909 #AC_CHECK_HEADERS([libintl.h])
 910 #AC_CHECK_FUNCS(gettext)
 911 #if test $ac_cv_func_gettext = no; then
 912 #   AC_CHECK_LIB(intl, gettext)
 913 #fi
 914 #AC_CHECK_FUNCS([bindtextdomain textdomain])
 915 AM_GNU_GETTEXT([external], [need-ngettext])
 916
 917 ### Some systems don't declare some functions.  On such systems, we
 918 ### need to at least provide our own K&R-style declarations.
 919
 920 ### GUILE_FUNC_DECLARED(function, headerfile)
 921
 922 ### Check for a declaration of FUNCTION in HEADERFILE; if it is
 923 ### not there, #define MISSING_FUNCTION_DECL.
 924 AC_DEFUN([GUILE_FUNC_DECLARED], [
 925   AC_CACHE_CHECK(for $1 declaration, guile_cv_func_$1_declared,
 926     AC_EGREP_HEADER($1, $2,
 927                     guile_cv_func_$1_declared=yes,
 928                     guile_cv_func_$1_declared=no))
 929   if test [x$guile_cv_func_]$1[_declared] = xno; then
 930     AC_DEFINE([MISSING_]translit($1, [a-z], [A-Z])[_DECL], 1,
 931       [Define if the operating system supplies $1 without declaring it.])
 932   fi
 933 ])
 934
 935 GUILE_FUNC_DECLARED(sleep, unistd.h)
 936 GUILE_FUNC_DECLARED(usleep, unistd.h)
 937
 938 AC_CHECK_DECLS([strptime],,,
 939 [#define _GNU_SOURCE /* ask glibc to give strptime prototype */
 940 #include <time.h>])
 941
 942 ### On some systems usleep has no return value.  If it does have one,
 943 ### we'd like to return it; otherwise, we'll fake it.
 944 AC_CACHE_CHECK([return type of usleep], guile_cv_func_usleep_return_type,
 945   [AC_EGREP_HEADER(changequote(<, >)<void[      ]+usleep>changequote([, ]),
 946                    unistd.h,
 947                    [guile_cv_func_usleep_return_type=void],
 948                    [guile_cv_func_usleep_return_type=int])])
 949 case "$guile_cv_func_usleep_return_type" in
 950   "void" )
 951     AC_DEFINE([USLEEP_RETURNS_VOID], 1,
 952       [Define if the system headers declare usleep to return void.])
 953   ;;
 954 esac
 955
 956 AC_CHECK_HEADER(sys/un.h, have_sys_un_h=1)
 957 if test -n "$have_sys_un_h" ; then
 958   AC_DEFINE([HAVE_UNIX_DOMAIN_SOCKETS], 1,
 959     [Define if the system supports Unix-domain (file-domain) sockets.])
 960 fi
 961
 962 AC_CHECK_FUNCS(getrlimit setrlimit)
 963
 964 AC_CHECK_FUNCS(socketpair getgroups setgroups setpwent pause tzset)
 965
 966 AC_CHECK_FUNCS(sethostent   gethostent   endhostent   dnl
 967                setnetent    getnetent    endnetent    dnl
 968                setprotoent  getprotoent  endprotoent  dnl
 969                setservent   getservent   endservent   dnl
 970                getnetbyaddr getnetbyname dnl
 971                inet_lnaof inet_makeaddr inet_netof hstrerror)
 972
 973 # struct sockaddr field sin_len is only present on BSD systems.
 974 # On 4.4BSD apparently a #define SIN_LEN exists, but on other BSD systems
 975 # (eg. FreeBSD 4.9) it doesn't and we must use this configure check
 976 AC_CHECK_MEMBERS([struct sockaddr.sin_len],,,
 977 [#ifdef HAVE_SYS_TYPES_H
 978 #include <sys/types.h>
 979 #endif
 980 #include <netinet/in.h>])
 981
 982 AC_MSG_CHECKING(for __libc_stack_end)
 983 AC_CACHE_VAL(guile_cv_have_libc_stack_end,
 984 [AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <stdio.h>
 985 extern char *__libc_stack_end;]],
 986    [[printf("%p", (char*) __libc_stack_end);]])],
 987    [guile_cv_have_libc_stack_end=yes],
 988    [guile_cv_have_libc_stack_end=no])])
 989 AC_MSG_RESULT($guile_cv_have_libc_stack_end)
 990
 991 if test $guile_cv_have_libc_stack_end = yes; then
 992   AC_DEFINE([HAVE_LIBC_STACK_END], 1,
 993            [Define if you have the __libc_stack_end variable.])
 994 fi
 995
 996 dnl Some systems do not declare this.  Some systems do declare it, as a
 997 dnl macro.  With cygwin it may be in a DLL.
 998
 999 AC_MSG_CHECKING(whether netdb.h declares h_errno)
1000 AC_CACHE_VAL(guile_cv_have_h_errno,
1001   [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <netdb.h>]],
1002                                       [[int a = h_errno;]])],
1003   [guile_cv_have_h_errno=yes],
1004   [guile_cv_have_h_errno=no])])
1005 AC_MSG_RESULT($guile_cv_have_h_errno)
1006 if test $guile_cv_have_h_errno = yes; then
1007   AC_DEFINE([HAVE_H_ERRNO], 1, [Define if h_errno is declared in netdb.h.])
1008 fi
1009
1010 AC_MSG_CHECKING(whether uint32_t is defined)
1011 AC_CACHE_VAL(guile_cv_have_uint32_t,
1012   [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <sys/types.h>
1013                    #if HAVE_STDINT_H
1014                    #include <stdint.h>
1015                    #endif
1016                    #ifndef HAVE_NETDB_H
1017                    #include <netdb.h>
1018                    #endif]],
1019                    [[uint32_t a;]])],
1020                    [guile_cv_have_uint32_t=yes],
1021                    [guile_cv_have_uint32_t=no])])
1022 AC_MSG_RESULT($guile_cv_have_uint32_t)
1023 if test $guile_cv_have_uint32_t = yes; then
1024   AC_DEFINE([HAVE_UINT32_T], 1,
1025     [Define if uint32_t typedef is defined when netdb.h is include.])
1026 fi
1027
1028 AC_MSG_CHECKING(for working IPv6 support)
1029 AC_CACHE_VAL(guile_cv_have_ipv6,
1030 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1031 #ifdef HAVE_SYS_TYPES_H
1032 #include <sys/types.h>
1033 #endif
1034 #include <netinet/in.h>
1035 #include <sys/socket.h>]],
1036 [[struct sockaddr_in6 a;  a.sin6_family = AF_INET6;]])],
1037 [guile_cv_have_ipv6=yes],
1038 [guile_cv_have_ipv6=no])])
1039 AC_MSG_RESULT($guile_cv_have_ipv6)
1040 if test $guile_cv_have_ipv6 = yes; then
1041   AC_DEFINE([HAVE_IPV6], 1, [Define if you want support for IPv6.])
1042 fi
1043
1044 # included in rfc2553 but not in older implementations, e.g., glibc 2.1.3.
1045 AC_MSG_CHECKING(whether sockaddr_in6 has sin6_scope_id)
1046 AC_CACHE_VAL(guile_cv_have_sin6_scope_id,
1047 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1048 #ifdef HAVE_SYS_TYPES_H
1049 #include <sys/types.h>
1050 #endif
1051 #include <netinet/in.h>]],
1052 [[struct sockaddr_in6 sok;  sok.sin6_scope_id = 0;]])],
1053 [guile_cv_have_sin6_scope_id=yes],
1054 [guile_cv_have_sin6_scope_id=no])])
1055 AC_MSG_RESULT($guile_cv_have_sin6_scope_id)
1056 if test $guile_cv_have_sin6_scope_id = yes; then
1057   AC_DEFINE([HAVE_SIN6_SCOPE_ID], 1,
1058     [Define this if your IPv6 has sin6_scope_id in sockaddr_in6 struct.])
1059 fi
1060
1061 # struct sockaddr_in6 field sin_len is only present on BSD systems
1062 AC_CHECK_MEMBERS([struct sockaddr_in6.sin6_len],,,
1063 [#ifdef HAVE_SYS_TYPES_H
1064 #include <sys/types.h>
1065 #endif
1066 #include <netinet/in.h>])
1067
1068 AC_MSG_CHECKING(whether localtime caches TZ)
1069 AC_CACHE_VAL(guile_cv_localtime_cache,
1070 [if test x$ac_cv_func_tzset = xyes; then
1071 AC_RUN_IFELSE([AC_LANG_SOURCE([[#include <time.h>
1072 #if STDC_HEADERS
1073 # include <stdlib.h>
1074 #endif
1075 extern char **environ;
1076 unset_TZ ()
1077 {
1078   char **from, **to;
1079   for (to = from = environ; (*to = *from); from++)
1080     if (! (to[0][0] == 'T' && to[0][1] == 'Z' && to[0][2] == '='))
1081       to++;
1082 }
1083 char TZ_GMT0[] = "TZ=GMT0";
1084 char TZ_PST8[] = "TZ=PST8";
1085 main()
1086 {
1087   time_t now = time ((time_t *) 0);
1088   int hour_GMT0, hour_unset;
1089   if (putenv (TZ_GMT0) != 0)
1090     exit (1);
1091   hour_GMT0 = localtime (&now)->tm_hour;
1092   unset_TZ ();
1093   hour_unset = localtime (&now)->tm_hour;
1094   if (putenv (TZ_PST8) != 0)
1095     exit (1);
1096   if (localtime (&now)->tm_hour == hour_GMT0)
1097     exit (1);
1098   unset_TZ ();
1099   if (localtime (&now)->tm_hour != hour_unset)
1100     exit (1);
1101   exit (0);
1102 }]])],
1103 [guile_cv_localtime_cache=no],
1104 [guile_cv_localtime_cache=yes],
1105 [# If we have tzset, assume the worst when cross-compiling.
1106 guile_cv_localtime_cache=yes])
1107 else
1108         # If we lack tzset, report that localtime does not cache TZ,
1109         # since we can't invalidate the cache if we don't have tzset.
1110         guile_cv_localtime_cache=no
1111 fi])dnl
1112 AC_MSG_RESULT($guile_cv_localtime_cache)
1113 if test $guile_cv_localtime_cache = yes; then
1114   AC_DEFINE([LOCALTIME_CACHE], 1, [Define if localtime caches the TZ setting.])
1115 fi
1116
1117 if test "$enable_regex" = yes; then
1118    if test "$ac_cv_header_regex_h" = yes ||
1119       test "$ac_cv_header_rxposix_h" = yes ||
1120       test "$ac_cv_header_rx_rxposix_h" = yes; then
1121      GUILE_NAMED_CHECK_FUNC(regcomp, norx, [AC_LIBOBJ([regex-posix])],
1122      [AC_CHECK_LIB(rx, main)
1123       GUILE_NAMED_CHECK_FUNC(regcomp, rx, [AC_LIBOBJ([regex-posix])],
1124      [AC_CHECK_LIB(regex, main)
1125       GUILE_NAMED_CHECK_FUNC(regcomp, regex, [AC_LIBOBJ([regex-posix])])])]
1126      )
1127      dnl The following should not be necessary, but for some reason
1128      dnl autoheader misses it if we don't include it!
1129      if test "$ac_cv_func_regcomp_norx" = yes ||
1130         test "$ac_cv_func_regcomp_regex" = yes ||
1131         test "$ac_cv_func_regcomp_rx" = yes; then
1132        AC_DEFINE([HAVE_REGCOMP], 1,
1133          [This is included as part of a workaround for a autoheader bug.])
1134      fi
1135    fi
1136 fi
1137
1138 AC_REPLACE_FUNCS([strerror memmove mkstemp])
1139
1140 AC_CHECK_HEADERS(floatingpoint.h ieeefp.h nan.h)
1141
1142 # Reasons for testing:
1143 #   asinh, acosh, atanh, trunc - C99 standard, generally not available on
1144 #                                older systems
1145 #   sincos - GLIBC extension
1146 #
1147 AC_CHECK_FUNCS(asinh acosh atanh copysign finite sincos trunc)
1148
1149 # C99 specifies isinf and isnan as macros.
1150 # HP-UX provides only macros, no functions.
1151 # glibc 2.3.2 provides both macros and functions.
1152 # IRIX 6.5 and Solaris 8 only provide functions.
1153 #
1154 # The following tests detect isinf and isnan either as functions or as
1155 # macros from <math.h>.  Plain AC_CHECK_FUNCS is insufficient, it doesn't
1156 # use <math.h> so doesn't detect on macro-only systems like HP-UX.
1157 #
1158 AC_MSG_CHECKING([for isinf])
1159 AC_LINK_IFELSE(AC_LANG_SOURCE(
1160 [[#include <math.h>
1161 volatile double x = 0.0;
1162 int main () { return (isinf(x) != 0); }]]),
1163   [AC_MSG_RESULT([yes])
1164    AC_DEFINE([HAVE_ISINF], 1,
1165              [Define to 1 if you have the `isinf' macro or function.])],
1166   [AC_MSG_RESULT([no])])
1167 AC_MSG_CHECKING([for isnan])
1168 AC_LINK_IFELSE(AC_LANG_SOURCE(
1169 [[#include <math.h>
1170 volatile double x = 0.0;
1171 int main () { return (isnan(x) != 0); }]]),
1172   [AC_MSG_RESULT([yes])
1173    AC_DEFINE([HAVE_ISNAN], 1,
1174              [Define to 1 if you have the `isnan' macro or function.])],
1175   [AC_MSG_RESULT([no])])
1176
1177 # Reasons for checking:
1178 #
1179 #     st_rdev
1180 #     st_blksize
1181 #     st_blocks   not in mingw
1182 #     tm_gmtoff   BSD+GNU, not in C99
1183 #
1184 # Note AC_STRUCT_ST_BLOCKS is not used here because we don't want the
1185 # AC_LIBOBJ(fileblocks) replacement which that macro gives.
1186 #
1187 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],,,
1188                  [#define _GNU_SOURCE
1189 AC_INCLUDES_DEFAULT
1190 ])
1191
1192 AC_STRUCT_TIMEZONE
1193 AC_CHECK_MEMBERS([struct tm.tm_gmtoff],,,
1194 [#include <time.h>
1195 #ifdef TIME_WITH_SYS_TIME
1196 # include <sys/time.h>
1197 # include <time.h>
1198 #else
1199 # if HAVE_SYS_TIME_H
1200 #  include <sys/time.h>
1201 # else
1202 #  include <time.h>
1203 # endif
1204 #endif
1205 ])
1206 GUILE_STRUCT_UTIMBUF
1207
1208
1209 #--------------------------------------------------------------------
1210 #
1211 # Which way does the stack grow?
1212 #
1213 # Following code comes from Autoconf 2.61's internal _AC_LIBOBJ_ALLOCA
1214 # macro (/usr/share/autoconf/autoconf/functions.m4).  Gnulib has
1215 # very similar code, so in future we could look at using that.
1216 #
1217 # An important detail is that the code involves find_stack_direction
1218 # calling _itself_ - which means that find_stack_direction (or at
1219 # least the second find_stack_direction() call) cannot be inlined.
1220 # If the code could be inlined, that might cause the test to give
1221 # an incorrect answer.
1222 #--------------------------------------------------------------------
1223
1224 SCM_I_GSC_STACK_GROWS_UP=0
1225 AC_RUN_IFELSE([AC_LANG_SOURCE(
1226 [AC_INCLUDES_DEFAULT
1227 int
1228 find_stack_direction ()
1229 {
1230   static char *addr = 0;
1231   auto char dummy;
1232   if (addr == 0)
1233     {
1234       addr = &dummy;
1235       return find_stack_direction ();
1236     }
1237   else
1238     return (&dummy > addr) ? 1 : -1;
1239 }
1240
1241 int
1242 main ()
1243 {
1244   return find_stack_direction () < 0;
1245 }])],
1246                [SCM_I_GSC_STACK_GROWS_UP=1],
1247                [],
1248                [AC_MSG_WARN(Guessing that stack grows down -- see scmconfig.h)])
1249
1250 #--------------------------------------------------------------------
1251 #
1252 # Boehm's GC library
1253 #
1254 #--------------------------------------------------------------------
1255 PKG_CHECK_MODULES([BDW_GC], [bdw-gc])
1256
1257 CFLAGS="$BDW_GC_CFLAGS $CFLAGS"
1258 LIBS="$BDW_GC_LIBS $LIBS"
1259
1260 # `GC_do_blocking ()' is available in GC 7.1 but not declared.
1261 AC_CHECK_FUNCS([GC_do_blocking])
1262 AC_CHECK_DECL([GC_do_blocking],
1263   [AC_DEFINE([HAVE_DECL_GC_DO_BLOCKING], [1],
1264     [Define this if the `GC_do_blocking ()' function is declared])],
1265   [],
1266   [#include <gc/gc.h>])
1267
1268 # `GC_fn_type' is not available in GC 7.1 and earlier.
1269 AC_CHECK_TYPE([GC_fn_type],
1270   [AC_DEFINE([HAVE_GC_FN_TYPE], [1],
1271     [Define this if the `GC_fn_type' type is available.])],
1272   [],
1273   [#include <gc/gc.h>])
1274
1275
1276 AC_CHECK_SIZEOF(float)
1277 if test "$ac_cv_sizeof_float" -le "$ac_cv_sizeof_long"; then
1278     AC_DEFINE([SCM_SINGLES], 1,
1279               [Define this if floats are the same size as longs.])
1280 fi
1281
1282 AC_MSG_CHECKING(for struct linger)
1283 AC_CACHE_VAL(scm_cv_struct_linger,
1284         AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1285 #include <sys/types.h>
1286 #include <sys/socket.h>]],
1287                           [[struct linger lgr;  lgr.l_linger = 100]])],
1288                           [scm_cv_struct_linger="yes"],
1289                           [scm_cv_struct_linger="no"]))
1290 AC_MSG_RESULT($scm_cv_struct_linger)
1291 if test $scm_cv_struct_linger = yes; then
1292         AC_DEFINE([HAVE_STRUCT_LINGER], 1,
1293           [Define this if your system defines struct linger, for use with the
1294            getsockopt and setsockopt system calls.])
1295 fi
1296
1297
1298 # On mingw, struct timespec is in <pthread.h>.
1299 #
1300 AC_MSG_CHECKING(for struct timespec)
1301 AC_CACHE_VAL(scm_cv_struct_timespec,
1302         AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1303 #include <time.h>
1304 #if HAVE_PTHREAD_H
1305 #include <pthread.h>
1306 #endif]], [[struct timespec t;  t.tv_nsec = 100]])],
1307           [scm_cv_struct_timespec="yes"],
1308           [scm_cv_struct_timespec="no"]))
1309 AC_MSG_RESULT($scm_cv_struct_timespec)
1310 if test $scm_cv_struct_timespec = yes; then
1311   AC_DEFINE([HAVE_STRUCT_TIMESPEC], 1,
1312     [Define this if your system defines struct timespec via either <time.h> or <pthread.h>.])
1313 fi
1314
1315 #--------------------------------------------------------------------
1316 #
1317 # Flags for thread support
1318 #
1319 #--------------------------------------------------------------------
1320
1321 SCM_I_GSC_USE_PTHREAD_THREADS=0
1322 SCM_I_GSC_USE_NULL_THREADS=0
1323 AC_SUBST([SCM_I_GSC_USE_PTHREAD_THREADS])
1324 AC_SUBST([SCM_I_GSC_USE_NULL_THREADS])
1325
1326 ### What thread package has the user asked for?
1327 AC_ARG_WITH(threads, [  --with-threads          thread interface],
1328             , with_threads=yes)
1329
1330 AC_SUBST(SCM_I_GSC_NEED_BRACES_ON_PTHREAD_ONCE_INIT, 0)
1331 AC_SUBST(SCM_I_GSC_NEED_BRACES_ON_PTHREAD_MUTEX_INITIALIZER, 0)
1332
1333 case "$with_threads" in
1334   "yes" | "pthread" | "pthreads" | "pthread-threads" | "")
1335
1336     build_pthread_support="yes"
1337
1338     ACX_PTHREAD([CC="$PTHREAD_CC"
1339        LIBS="$PTHREAD_LIBS $LIBS"
1340        SCM_I_GSC_USE_PTHREAD_THREADS=1
1341        with_threads="pthreads"],
1342       [with_threads="null"
1343        build_pthread_support="no"])
1344
1345     old_CFLAGS="$CFLAGS"
1346     CFLAGS="$PTHREAD_CFLAGS $CFLAGS"
1347
1348     # Reasons for testing:
1349     #     pthread_getattr_np - "np" meaning "non portable" says it
1350     #         all; not present on MacOS X or Solaris 10
1351     #     pthread_get_stackaddr_np - "np" meaning "non portable" says it
1352     #         all; specific to MacOS X
1353     #     pthread_sigmask - not available on mingw
1354     #
1355     AC_CHECK_FUNCS(pthread_attr_getstack pthread_getattr_np pthread_get_stackaddr_np pthread_sigmask)
1356
1357     # On past versions of Solaris, believe 8 through 10 at least, you
1358     # had to write "pthread_once_t foo = { PTHREAD_ONCE_INIT };".
1359     # This is contrary to POSIX:
1360     # http://www.opengroup.org/onlinepubs/000095399/functions/pthread_once.html
1361     # Check here if this style is required.
1362     #
1363     # glibc (2.3.6 at least) works both with or without braces, so the
1364     # test checks whether it works without.
1365     #
1366
1367     if test "$GCC" = "yes"; then
1368       # Since GCC only issues a warning for missing braces, so we need
1369       # `-Werror' to catch it.
1370       CFLAGS="-Werror -Wmissing-braces $CFLAGS"
1371     fi
1372
1373     AC_CACHE_CHECK([whether PTHREAD_ONCE_INIT needs braces],
1374       guile_cv_need_braces_on_pthread_once_init,
1375       [AC_COMPILE_IFELSE([#include <pthread.h>
1376          pthread_once_t foo = PTHREAD_ONCE_INIT;],
1377         [guile_cv_need_braces_on_pthread_once_init=no],
1378         [guile_cv_need_braces_on_pthread_once_init=yes])])
1379     if test "$guile_cv_need_braces_on_pthread_once_init" = yes; then
1380       SCM_I_GSC_NEED_BRACES_ON_PTHREAD_ONCE_INIT=1
1381     fi
1382
1383     # Same problem with `PTHREAD_MUTEX_INITIALIZER', e.g., on IRIX
1384     # 6.5.30m with GCC 3.3.
1385     AC_CACHE_CHECK([whether PTHREAD_MUTEX_INITIALIZER needs braces],
1386       guile_cv_need_braces_on_pthread_mutex_initializer,
1387       [AC_COMPILE_IFELSE([#include <pthread.h>
1388          pthread_mutex_t foo = PTHREAD_MUTEX_INITIALIZER;],
1389         [guile_cv_need_braces_on_pthread_mutex_initializer=no],
1390         [guile_cv_need_braces_on_pthread_mutex_initializer=yes])])
1391     if test "$guile_cv_need_braces_on_pthread_mutex_initializer" = yes; then
1392       SCM_I_GSC_NEED_BRACES_ON_PTHREAD_MUTEX_INITIALIZER=1
1393     fi
1394
1395     CFLAGS="$old_CFLAGS"
1396
1397     # On Solaris, sched_yield lives in -lrt.
1398     AC_SEARCH_LIBS(sched_yield, rt)
1399
1400   ;;
1401 esac
1402
1403 case "$with_threads" in
1404   "pthreads")
1405   ;;
1406   "no" | "null")
1407     SCM_I_GSC_USE_NULL_THREADS=1
1408     SCM_I_GSC_HAVE_THREAD_STORAGE_CLASS=0
1409     with_threads="null-threads"
1410   ;;
1411   * )
1412     AC_MSG_ERROR(invalid value for --with-threads: $with_threads)
1413   ;;
1414 esac
1415
1416 AC_MSG_CHECKING(what kind of threads to support)
1417 AC_MSG_RESULT($with_threads)
1418
1419 AM_CONDITIONAL([BUILD_PTHREAD_SUPPORT],
1420   [test "x$build_pthread_support" = "xyes"])
1421
1422
1423 ## Check whether pthread_attr_getstack works for the main thread
1424
1425 if test "$with_threads" = pthreads; then
1426
1427 AC_MSG_CHECKING(whether pthread_attr_getstack works for the main thread)
1428 old_CFLAGS="$CFLAGS"
1429 CFLAGS="$PTHREAD_CFLAGS $CFLAGS"
1430 AC_RUN_IFELSE([AC_LANG_SOURCE([[
1431 #if HAVE_PTHREAD_ATTR_GETSTACK
1432 #include <pthread.h>
1433
1434 int main ()
1435 {
1436   pthread_attr_t attr;
1437   void *start, *end;
1438   size_t size;
1439
1440   pthread_getattr_np (pthread_self (), &attr);
1441   pthread_attr_getstack (&attr, &start, &size);
1442   end = (char *)start + size;
1443
1444   if ((void *)&attr < start || (void *)&attr >= end)
1445     return 1;
1446   else
1447     return 0;
1448 }
1449 #else
1450 int main ()
1451 {
1452   return 1;
1453 }
1454 #endif
1455 ]])],
1456 [works=yes
1457 AC_DEFINE([PTHREAD_ATTR_GETSTACK_WORKS], [1], [Define when pthread_att_get_stack works for the main thread])],
1458 [works=no],
1459 [])
1460 CFLAGS="$old_CFLAGS"
1461 AC_MSG_RESULT($works)
1462
1463 GUILE_THREAD_LOCAL_STORAGE
1464
1465 fi # with_threads=pthreads
1466
1467
1468 ## Cross building
1469 if test "$cross_compiling" = "yes"; then
1470   AC_MSG_CHECKING(cc for build)
1471   ## /usr/bin/cc still uses wrong assembler
1472   ## CC_FOR_BUILD="${CC_FOR_BUILD-/usr/bincc}"
1473   CC_FOR_BUILD="${CC_FOR_BUILD-PATH=/usr/bin:$PATH cc}"
1474 else
1475   CC_FOR_BUILD="${CC_FOR_BUILD-$CC}"
1476 fi
1477
1478 ## AC_MSG_CHECKING("if we are cross compiling")
1479 ## AC_MSG_RESULT($cross_compiling)
1480 if test "$cross_compiling" = "yes"; then
1481    AC_MSG_RESULT($CC_FOR_BUILD)
1482 fi
1483
1484 ## No need as yet to be more elaborate
1485 CCLD_FOR_BUILD="$CC_FOR_BUILD"
1486
1487 AC_SUBST(cross_compiling)
1488 AC_ARG_VAR(CC_FOR_BUILD,[build system C compiler])
1489 AC_SUBST(CCLD_FOR_BUILD)
1490
1491 ## libtool erroneously calls CC_FOR_BUILD HOST_CC;
1492 ## --HOST is the platform that PACKAGE is compiled for.
1493 HOST_CC="$CC_FOR_BUILD"
1494 AC_SUBST(HOST_CC)
1495
1496 if test "$cross_compiling" = "yes"; then
1497   AC_MSG_CHECKING(guile for build)
1498   GUILE_FOR_BUILD="${GUILE_FOR_BUILD-guile}"
1499 else
1500   GUILE_FOR_BUILD='$(preinstguile)'
1501 fi
1502
1503 ## AC_MSG_CHECKING("if we are cross compiling")
1504 ## AC_MSG_RESULT($cross_compiling)
1505 if test "$cross_compiling" = "yes"; then
1506    AC_MSG_RESULT($GUILE_FOR_BUILD)
1507 fi
1508 AC_ARG_VAR(GUILE_FOR_BUILD,[guile for build system])
1509 AC_SUBST(GUILE_FOR_BUILD)
1510
1511 ## If we're using GCC, ask for aggressive warnings.
1512 GCC_CFLAGS=""
1513 case "$GCC" in
1514   yes )
1515     ## We had -Wstrict-prototypes in here for a bit, but Guile does too
1516     ## much stuff with generic function pointers for that to really be
1517     ## less than exasperating.
1518     ## -Wpointer-arith was here too, but something changed in gcc/glibc
1519     ## and it became equally exasperating (gcc 2.95 and/or glibc 2.1.2).
1520     POTENTIAL_GCC_CFLAGS="-Wall -Wmissing-prototypes \
1521       -Wdeclaration-after-statement -Wundef \
1522       -Wswitch-enum"
1523     # Do this here so we don't screw up any of the tests above that might
1524     # not be "warning free"
1525     if test "${GUILE_ERROR_ON_WARNING}" = yes
1526     then
1527         POTENTIAL_GCC_CFLAGS="${POTENTIAL_GCC_CFLAGS} -Werror"
1528         enable_compile_warnings=no
1529     fi
1530
1531     for flag in $POTENTIAL_GCC_CFLAGS
1532     do
1533         gl_WARN_ADD([$flag], [GCC_CFLAGS])
1534     done
1535     ;;
1536 esac
1537
1538 AC_SUBST(GCC_CFLAGS)
1539
1540 # Check for GNU ld's "-z relro".
1541 GUILE_GNU_LD_RELRO
1542
1543
1544 ## If we're creating a shared library (using libtool!), then we'll
1545 ## need to generate a list of .lo files corresponding to the .o files
1546 ## given in LIBOBJS.  We'll call it LIBLOBJS.
1547 LIBLOBJS="`echo ${LIB@&t@OBJS} | sed 's,\.[[^.]]* ,.lo ,g;s,\.[[^.]]*$,.lo,'`"
1548
1549 ## We also need to create corresponding .doc and .x files
1550 EXTRA_DOT_DOC_FILES="`echo ${LIB@&t@OBJS} | sed 's,\.[[^.]]* ,.doc ,g;s,\.[[^.]]*$,.doc,'`"
1551 EXTRA_DOT_X_FILES="`echo ${LIB@&t@OBJS} | sed 's,\.[[^.]]* ,.x ,g;s,\.[[^.]]*$,.x,'`"
1552
1553 # GNU Readline bindings.
1554 GUILE_READLINE
1555
1556 AC_SUBST(GUILE_MAJOR_VERSION)
1557 AC_SUBST(GUILE_MINOR_VERSION)
1558 AC_SUBST(GUILE_MICRO_VERSION)
1559 AC_SUBST(GUILE_EFFECTIVE_VERSION)
1560 AC_SUBST(GUILE_VERSION)
1561
1562 #######################################################################
1563 # library versioning
1564
1565 AC_SUBST(LIBGUILE_INTERFACE_CURRENT)
1566 AC_SUBST(LIBGUILE_INTERFACE_REVISION)
1567 AC_SUBST(LIBGUILE_INTERFACE_AGE)
1568 AC_SUBST(LIBGUILE_INTERFACE)
1569
1570 AC_SUBST(LIBGUILE_SRFI_SRFI_1_MAJOR)
1571 AC_SUBST(LIBGUILE_SRFI_SRFI_1_INTERFACE_CURRENT)
1572 AC_SUBST(LIBGUILE_SRFI_SRFI_1_INTERFACE_REVISION)
1573 AC_SUBST(LIBGUILE_SRFI_SRFI_1_INTERFACE_AGE)
1574 AC_SUBST(LIBGUILE_SRFI_SRFI_1_INTERFACE)
1575
1576 AC_SUBST(LIBGUILE_SRFI_SRFI_4_MAJOR)
1577 AC_SUBST(LIBGUILE_SRFI_SRFI_4_INTERFACE_CURRENT)
1578 AC_SUBST(LIBGUILE_SRFI_SRFI_4_INTERFACE_REVISION)
1579 AC_SUBST(LIBGUILE_SRFI_SRFI_4_INTERFACE_AGE)
1580 AC_SUBST(LIBGUILE_SRFI_SRFI_4_INTERFACE)
1581
1582 AC_SUBST(LIBGUILE_SRFI_SRFI_13_14_MAJOR)
1583 AC_SUBST(LIBGUILE_SRFI_SRFI_13_14_INTERFACE_CURRENT)
1584 AC_SUBST(LIBGUILE_SRFI_SRFI_13_14_INTERFACE_REVISION)
1585 AC_SUBST(LIBGUILE_SRFI_SRFI_13_14_INTERFACE_AGE)
1586 AC_SUBST(LIBGUILE_SRFI_SRFI_13_14_INTERFACE)
1587
1588 AC_SUBST(LIBGUILE_SRFI_SRFI_60_MAJOR)
1589 AC_SUBST(LIBGUILE_SRFI_SRFI_60_INTERFACE_CURRENT)
1590 AC_SUBST(LIBGUILE_SRFI_SRFI_60_INTERFACE_REVISION)
1591 AC_SUBST(LIBGUILE_SRFI_SRFI_60_INTERFACE_AGE)
1592 AC_SUBST(LIBGUILE_SRFI_SRFI_60_INTERFACE)
1593
1594 AC_SUBST(LIBGUILE_I18N_MAJOR)
1595 AC_SUBST(LIBGUILE_I18N_INTERFACE_CURRENT)
1596 AC_SUBST(LIBGUILE_I18N_INTERFACE_REVISION)
1597 AC_SUBST(LIBGUILE_I18N_INTERFACE_AGE)
1598 AC_SUBST(LIBGUILE_I18N_INTERFACE)
1599
1600
1601 #######################################################################
1602
1603 dnl Tell guile-config what flags guile users should compile and link with.
1604 GUILE_LIBS="$LDFLAGS $LIBS"
1605 GUILE_CFLAGS="$CPPFLAGS $PTHREAD_CFLAGS"
1606 AC_SUBST(GUILE_LIBS)
1607 AC_SUBST(GUILE_CFLAGS)
1608
1609 AC_SUBST(AWK)
1610 AC_SUBST(LIBLOBJS)
1611 AC_SUBST(EXTRA_DOT_DOC_FILES)
1612 AC_SUBST(EXTRA_DOT_X_FILES)
1613
1614 dnl See also top_builddir in info node: (libtool)AC_PROG_LIBTOOL
1615 top_builddir_absolute=`pwd`
1616 AC_SUBST(top_builddir_absolute)
1617 top_srcdir_absolute=`(cd $srcdir && pwd)`
1618 AC_SUBST(top_srcdir_absolute)
1619
1620 dnl We need `sitedir' in `guile-1.8.pc'.
1621 dnl Note: `sitedir' must be kept in sync with `GUILE_SITE_DIR' in `guile.m4'.
1622 pkgdatadir="$datadir/$PACKAGE_TARNAME"
1623 sitedir="$pkgdatadir/site"
1624 AC_SUBST([sitedir])
1625
1626 # Additional SCM_I_GSC definitions are above.
1627 AC_SUBST([SCM_I_GSC_GUILE_DEBUG])
1628 AC_SUBST([SCM_I_GSC_GUILE_DEBUG_FREELIST])
1629 AC_SUBST([SCM_I_GSC_ENABLE_DISCOURAGED])
1630 AC_SUBST([SCM_I_GSC_ENABLE_DEPRECATED])
1631 AC_SUBST([SCM_I_GSC_ENABLE_ELISP])
1632 AC_SUBST([SCM_I_GSC_STACK_GROWS_UP])
1633 AC_SUBST([SCM_I_GSC_C_INLINE])
1634 AC_CONFIG_FILES([libguile/gen-scmconfig.h])
1635
1636 AC_CONFIG_FILES([
1637   Makefile
1638   am/Makefile
1639   lib/Makefile
1640   benchmark-suite/Makefile
1641   doc/Makefile
1642   doc/r5rs/Makefile
1643   doc/ref/Makefile
1644   emacs/Makefile
1645   examples/Makefile
1646   libguile/Makefile
1647   srfi/Makefile
1648   guile-readline/Makefile
1649   test-suite/Makefile
1650   test-suite/standalone/Makefile
1651   meta/Makefile
1652   module/Makefile
1653   testsuite/Makefile
1654 ])
1655
1656 AC_CONFIG_FILES([meta/guile-2.0.pc])
1657 AC_CONFIG_FILES([meta/guile-2.0-uninstalled.pc])
1658 AC_CONFIG_FILES([check-guile], [chmod +x check-guile])
1659 AC_CONFIG_FILES([benchmark-guile], [chmod +x benchmark-guile])
1660 AC_CONFIG_FILES([meta/guile], [chmod +x meta/guile])
1661 AC_CONFIG_FILES([meta/uninstalled-env], [chmod +x meta/uninstalled-env])
1662 AC_CONFIG_FILES([meta/gdb-uninstalled-guile], [chmod +x meta/gdb-uninstalled-guile])
1663 AC_CONFIG_FILES([meta/guile-tools], [chmod +x meta/guile-tools])
1664 AC_CONFIG_FILES([libguile/guile-snarf],
1665                 [chmod +x libguile/guile-snarf])
1666 AC_CONFIG_FILES([libguile/guile-doc-snarf],
1667                 [chmod +x libguile/guile-doc-snarf])
1668 AC_CONFIG_FILES([libguile/guile-func-name-check],
1669                 [chmod +x libguile/guile-func-name-check])
1670 AC_CONFIG_FILES([libguile/guile-snarf-docs],
1671                 [chmod +x libguile/guile-snarf-docs])
1672 AC_CONFIG_FILES([test-suite/standalone/test-use-srfi],
1673                 [chmod +x test-suite/standalone/test-use-srfi])
1674 AC_CONFIG_FILES([test-suite/standalone/test-fast-slot-ref],
1675                 [chmod +x test-suite/standalone/test-fast-slot-ref])
1676 AC_CONFIG_FILES([doc/ref/effective-version.texi])
1677
1678 AC_OUTPUT
1679
1680 dnl Local Variables:
1681 dnl comment-start: "dnl "
1682 dnl comment-end: ""
1683 dnl comment-start-skip: "\\bdnl\\b\\s *"
1684 dnl End: