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271 lines
6.8 KiB
271 lines
6.8 KiB
dnl Copyright (C) 1993-2006 Free Software Foundation, Inc.
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dnl This file is free software, distributed under the terms of the GNU
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dnl General Public License. As a special exception to the GNU General
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dnl Public License, this file may be distributed as part of a program
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dnl that contains a configuration script generated by Autoconf, under
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dnl the same distribution terms as the rest of that program.
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dnl From Bruno Haible, Marcus Daniels, Sam Steingold.
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AC_PREREQ(2.13)
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dnl without AC_MSG_...: with AC_MSG_... and caching:
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dnl AC_TRY_CPP CL_CPP_CHECK
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dnl AC_TRY_COMPILE CL_COMPILE_CHECK
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dnl AC_TRY_LINK CL_LINK_CHECK
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dnl AC_TRY_RUN CL_RUN_CHECK - would require cross-compiling support
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dnl Usage:
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dnl AC_TRY_CPP(INCLUDES,
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dnl ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND])
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dnl CL_CPP_CHECK(ECHO-TEXT, CACHE-ID,
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dnl INCLUDES,
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dnl ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND])
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dnl AC_TRY_xxx(INCLUDES, FUNCTION-BODY,
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dnl ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND])
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dnl CL_xxx_CHECK(ECHO-TEXT, CACHE-ID,
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dnl INCLUDES, FUNCTION-BODY,
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dnl ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND])
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AC_DEFUN([CL_CPP_CHECK],
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[AC_MSG_CHECKING(for $1)
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AC_CACHE_VAL($2,[
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AC_TRY_CPP([$3], $2=yes, $2=no)
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])
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AC_MSG_RESULT([$]$2)
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if test [$]$2 = yes; then
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ifelse([$4], , :, [$4])
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ifelse([$5], , , [else
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$5
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])dnl
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fi
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])
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AC_DEFUN([CL_COMPILE_CHECK],
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[AC_MSG_CHECKING(for $1)
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AC_CACHE_VAL($2,[
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AC_TRY_COMPILE([$3],[$4], $2=yes, $2=no)
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])
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AC_MSG_RESULT([$]$2)
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if test [$]$2 = yes; then
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ifelse([$5], , :, [$5])
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ifelse([$6], , , [else
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$6
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])dnl
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fi
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])
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AC_DEFUN([CL_LINK_CHECK],
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[AC_MSG_CHECKING(for $1)
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AC_CACHE_VAL($2,[
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AC_TRY_LINK([$3],[$4], $2=yes, $2=no)
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])
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AC_MSG_RESULT([$]$2)
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if test [$]$2 = yes; then
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ifelse([$5], , :, [$5])
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ifelse([$6], , , [else
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$6
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])dnl
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fi
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])
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dnl CL_SILENT(ACTION)
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dnl performs ACTION, with AC_MSG_CHECKING and AC_MSG_RESULT being defined away.
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AC_DEFUN([CL_SILENT],
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[pushdef([AC_MSG_CHECKING],[:])dnl
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pushdef([AC_CHECKING],[:])dnl
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pushdef([AC_MSG_RESULT],[:])dnl
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$1[]dnl
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popdef([AC_MSG_RESULT])dnl
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popdef([AC_CHECKING])dnl
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popdef([AC_MSG_CHECKING])dnl
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])
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dnl Expands to the "extern ..." prefix used for system declarations.
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dnl AC_LANG_EXTERN()
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AC_DEFUN([AC_LANG_EXTERN],
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[extern
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#ifdef __cplusplus
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"C"
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#endif
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])
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AC_DEFUN([CL_CC_WORKS],
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[AC_CACHE_CHECK(whether CC works at all, cl_cv_prog_cc_works, [
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AC_LANG_SAVE()
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AC_LANG_C()
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AC_TRY_RUN([
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#include <stdlib.h>
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int main() { exit(0); }
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],
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cl_cv_prog_cc_works=yes, cl_cv_prog_cc_works=no,
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AC_TRY_LINK([], [], cl_cv_prog_cc_works=yes, cl_cv_prog_cc_works=no))
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AC_LANG_RESTORE()
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])
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case "$cl_cv_prog_cc_works" in
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*no) echo "Installation or configuration problem: C compiler cannot create executables."; exit 1;;
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*yes) ;;
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esac
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])
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AC_DEFUN([CL_CONFIG_SUBDIRS],
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[dnl No AC_CONFIG_AUX_DIR_DEFAULT, so we don't need install.sh.
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AC_PROVIDE([AC_CONFIG_AUX_DIR_DEFAULT])
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AC_CONFIG_SUBDIRS([$1])dnl
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])
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AC_DEFUN([CL_CANONICAL_HOST],
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[AC_REQUIRE([AC_PROG_CC]) dnl Actually: AC_REQUIRE([CL_CC_WORKS])
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dnl Set ac_aux_dir before the cache check, because AM_PROG_LIBTOOL needs it.
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ac_aux_dir=${srcdir}/$1
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dnl A substitute for AC_CONFIG_AUX_DIR_DEFAULT, so we don't need install.sh.
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ac_config_guess="$SHELL $ac_aux_dir/config.guess"
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ac_config_sub="$SHELL $ac_aux_dir/config.sub"
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dnl We have defined $ac_aux_dir.
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AC_PROVIDE([AC_CONFIG_AUX_DIR_DEFAULT])dnl
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dnl In autoconf-2.52, a single AC_CANONICAL_HOST has the effect of inserting
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dnl the code of AC_CANONICAL_BUILD *before* CL_CANONICAL_HOST, i.e. before
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dnl ac_aux_dir has been set. To work around this, we list AC_CANONICAL_BUILD
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dnl explicitly.
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AC_CANONICAL_BUILD
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AC_CANONICAL_HOST
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])
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AC_DEFUN([CL_CANONICAL_HOST_CPU],
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[AC_REQUIRE([CL_CANONICAL_HOST])AC_REQUIRE([AC_PROG_CC])
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case "$host_cpu" in
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changequote(,)dnl
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i[4567]86 )
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host_cpu=i386
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;;
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alphaev[4-8] | alphaev56 | alphapca5[67] | alphaev6[78] )
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host_cpu=alpha
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;;
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hppa1.0 | hppa1.1 | hppa2.0* | hppa64 )
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host_cpu=hppa
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;;
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powerpc )
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host_cpu=rs6000
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;;
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c1 | c2 | c32 | c34 | c38 | c4 )
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host_cpu=convex
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;;
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arm* )
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host_cpu=arm
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;;
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changequote([,])dnl
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mips )
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AC_CACHE_CHECK([for 64-bit MIPS], cl_cv_host_mips64, [
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AC_EGREP_CPP(yes,
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[#if defined(_MIPS_SZLONG)
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#if (_MIPS_SZLONG == 64)
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/* We should also check for (_MIPS_SZPTR == 64), but gcc keeps this at 32. */
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yes
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#endif
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#endif
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], cl_cv_host_mips64=yes, cl_cv_host_mips64=no)
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])
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if test $cl_cv_host_mips64 = yes; then
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host_cpu=mips64
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fi
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;;
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dnl UltraSPARCs running Linux have `uname -m` = "sparc64", but the C compiler
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dnl still generates 32-bit code.
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sparc | sparc64 )
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AC_CACHE_CHECK([for 64-bit SPARC], cl_cv_host_sparc64, [
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AC_EGREP_CPP(yes,
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[#if defined(__sparcv9) || defined(__arch64__)
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yes
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#endif
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], cl_cv_host_sparc64=yes, cl_cv_host_sparc64=no)
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])
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if test $cl_cv_host_sparc64 = yes; then
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host_cpu=sparc64
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else
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host_cpu=sparc
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fi
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;;
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esac
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dnl was AC_DEFINE_UNQUOTED(__${host_cpu}__) but KAI C++ 3.2d doesn't like this
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cat >> confdefs.h <<EOF
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#ifndef __${host_cpu}__
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#define __${host_cpu}__ 1
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#endif
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EOF
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])
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AC_DEFUN([CL_CANONICAL_HOST_CPU_FOR_FFCALL],
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[AC_REQUIRE([CL_CANONICAL_HOST])AC_REQUIRE([AC_PROG_CC])
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case "$host_cpu" in
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changequote(,)dnl
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i[4567]86 )
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host_cpu=i386
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;;
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alphaev[4-8] | alphaev56 | alphapca5[67] | alphaev6[78] )
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host_cpu=alpha
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;;
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hppa1.0 | hppa1.1 | hppa2.0* | hppa64 )
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host_cpu=hppa
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;;
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powerpc )
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host_cpu=rs6000
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;;
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c1 | c2 | c32 | c34 | c38 | c4 )
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host_cpu=convex
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;;
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arm* )
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host_cpu=arm
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;;
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changequote([,])dnl
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mips )
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AC_CACHE_CHECK([for 64-bit MIPS], cl_cv_host_mips64, [
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AC_EGREP_CPP(yes,
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[#if defined(_MIPS_SZLONG)
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#if (_MIPS_SZLONG == 64)
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/* We should also check for (_MIPS_SZPTR == 64), but gcc keeps this at 32. */
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yes
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#endif
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#endif
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], cl_cv_host_mips64=yes, cl_cv_host_mips64=no)
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])
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if test $cl_cv_host_mips64 = yes; then
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host_cpu=mips64
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else
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AC_CACHE_CHECK([for MIPS with n32 ABI], cl_cv_host_mipsn32, [
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dnl Strictly speaking, the MIPS ABI (-32 or -n32) is independent from the CPU
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dnl identification (-mips[12] or -mips[34]). But -n32 is commonly used together
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dnl with -mips3, and it's easier to test the CPU identification.
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AC_EGREP_CPP(yes,
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[#if __mips >= 3
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yes
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#endif
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], cl_cv_host_mipsn32=yes, cl_cv_host_mipsn32=no)
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])
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if test $cl_cv_host_mipsn32 = yes; then
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host_cpu=mipsn32
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fi
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fi
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;;
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dnl UltraSPARCs running Linux have `uname -m` = "sparc64", but the C compiler
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dnl still generates 32-bit code.
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sparc | sparc64 )
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AC_CACHE_CHECK([for 64-bit SPARC], cl_cv_host_sparc64, [
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AC_EGREP_CPP(yes,
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[#if defined(__sparcv9) || defined(__arch64__)
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yes
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#endif
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], cl_cv_host_sparc64=yes, cl_cv_host_sparc64=no)
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])
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if test $cl_cv_host_sparc64 = yes; then
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host_cpu=sparc64
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else
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host_cpu=sparc
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fi
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;;
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esac
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dnl was AC_DEFINE_UNQUOTED(__${host_cpu}__) but KAI C++ 3.2d doesn't like this
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cat >> confdefs.h <<EOF
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#ifndef __${host_cpu}__
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#define __${host_cpu}__ 1
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#endif
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EOF
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])
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