gcc/config/acx.m4
Iain Buclaw 7c6ae994fb config: Add check whether D compiler works (PR103528)
As well as checking for the existence of a GDC compiler, also validate
that it has also been built with libphobos, otherwise warn or fail with
the message that GDC is required to build d.

config/ChangeLog:

	PR d/103528
	* acx.m4 (ACX_PROG_GDC): Add check whether D compiler works.

ChangeLog:

	* configure: Regenerate.
2021-12-21 21:29:35 +01:00

673 lines
21 KiB
Plaintext

# Autoconf M4 include file defining utility macros for complex Canadian
# cross builds.
dnl ####
dnl # _GCC_TOPLEV_NONCANONICAL_BUILD
dnl # $build_alias or canonical $build if blank.
dnl # Used when we would use $build_alias, but empty is not OK.
AC_DEFUN([_GCC_TOPLEV_NONCANONICAL_BUILD],
[AC_REQUIRE([AC_CANONICAL_BUILD]) []dnl
case ${build_alias} in
"") build_noncanonical=${build} ;;
*) build_noncanonical=${build_alias} ;;
esac
]) []dnl # _GCC_TOPLEV_NONCANONICAL_BUILD
dnl ####
dnl # _GCC_TOPLEV_NONCANONICAL_HOST
dnl # $host_alias, or $build_noncanonical if blank.
dnl # Used when we would use $host_alias, but empty is not OK.
AC_DEFUN([_GCC_TOPLEV_NONCANONICAL_HOST],
[AC_REQUIRE([_GCC_TOPLEV_NONCANONICAL_BUILD]) []dnl
case ${host_alias} in
"") host_noncanonical=${build_noncanonical} ;;
*) host_noncanonical=${host_alias} ;;
esac
]) []dnl # _GCC_TOPLEV_NONCANONICAL_HOST
dnl ####
dnl # _GCC_TOPLEV_NONCANONICAL_TARGET
dnl # $target_alias or $host_noncanonical if blank.
dnl # Used when we would use $target_alias, but empty is not OK.
AC_DEFUN([_GCC_TOPLEV_NONCANONICAL_TARGET],
[AC_REQUIRE([_GCC_TOPLEV_NONCANONICAL_HOST]) []dnl
case ${target_alias} in
"") target_noncanonical=${host_noncanonical} ;;
*) target_noncanonical=${target_alias} ;;
esac
]) []dnl # _GCC_TOPLEV_NONCANONICAL_TARGET
dnl ####
dnl # ACX_NONCANONICAL_BUILD
dnl # Like underscored version, but AC_SUBST's.
AC_DEFUN([ACX_NONCANONICAL_BUILD],
[AC_REQUIRE([_GCC_TOPLEV_NONCANONICAL_BUILD]) []dnl
AC_SUBST(build_noncanonical)
]) []dnl # ACX_NONCANONICAL_BUILD
dnl ####
dnl # ACX_NONCANONICAL_HOST
dnl # Like underscored version, but AC_SUBST's.
AC_DEFUN([ACX_NONCANONICAL_HOST],
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AC_SUBST(host_noncanonical)
]) []dnl # ACX_NONCANONICAL_HOST
dnl ####
dnl # ACX_NONCANONICAL_TARGET
dnl # Like underscored version, but AC_SUBST's.
AC_DEFUN([ACX_NONCANONICAL_TARGET],
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AC_SUBST(target_noncanonical)
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dnl ####
dnl # GCC_TOPLEV_SUBDIRS
dnl # GCC & friends build 'build', 'host', and 'target' tools. These must
dnl # be separated into three well-known subdirectories of the build directory:
dnl # build_subdir, host_subdir, and target_subdir. The values are determined
dnl # here so that they can (theoretically) be changed in the future. They
dnl # were previously reproduced across many different files.
dnl #
dnl # This logic really amounts to very little with autoconf 2.13; it will
dnl # amount to a lot more with autoconf 2.5x.
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AC_REQUIRE([_GCC_TOPLEV_NONCANONICAL_BUILD]) []dnl
# post-stage1 host modules use a different CC_FOR_BUILD so, in order to
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# arranges to pass --with-build-libsubdir=$(HOST_SUBDIR).
# However, they still use the build modules, because the corresponding
# host modules (e.g. bison) are only built for the host when bootstrap
# finishes. So:
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AC_ARG_WITH(build-libsubdir,
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host_subdir=.
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target_subdir=${target_noncanonical}
AC_SUBST([build_libsubdir]) []dnl
AC_SUBST([build_subdir]) []dnl
AC_SUBST([host_subdir]) []dnl
AC_SUBST([target_subdir]) []dnl
]) []dnl # GCC_TOPLEV_SUBDIRS
####
# _NCN_TOOL_PREFIXES: Some stuff that oughtta be done in AC_CANONICAL_SYSTEM
# or AC_INIT.
# These demand that AC_CANONICAL_SYSTEM be called beforehand.
AC_DEFUN([_NCN_TOOL_PREFIXES],
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####
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# Like plain AC_CHECK_TOOLS, but require prefix if build!=host.
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AC_ARG_VAR([$1], [$1 for the host])
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ac_cv_prog_$1=[$]$1
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$1=$ac_cv_prog_$1
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if test -n "$ac_cv_prog_$1"; then
for ncn_progname in $2; do
AC_CHECK_PROG([$1], [${ncn_progname}], [${ncn_progname}], , [$4])
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for ncn_progname in $2; do
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AC_CHECK_PROG([$1], [${ncn_tool_prefix}${ncn_progname}],
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if test -z "$ac_cv_prog_$1" && test $build = $host ; then
AC_CHECK_PROG([$1], [${ncn_progname}], [${ncn_progname}], , [$4])
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####
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AC_ARG_VAR([$1], patsubst([$1], [_FOR_TARGET$], [])[ for the target])
if test -n "[$]$1"; then
ac_cv_prog_$1=[$]$1
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$1=$ac_cv_prog_$1
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for ncn_progname in $2; do
AC_CHECK_PROG([$1], [${ncn_progname}], [${ncn_progname}], , [$4])
done
fi
if test -z "$ac_cv_prog_$1" && test -n "$with_build_time_tools"; then
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AC_MSG_CHECKING([for ${ncn_progname} in $with_build_time_tools])
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ac_cv_prog_$1=$with_build_time_tools/${ncn_progname}
AC_MSG_RESULT(yes)
break
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AC_MSG_RESULT(no)
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done
fi
if test -z "$ac_cv_prog_$1"; then
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AC_CHECK_PROG([$1], [${ncn_target_tool_prefix}${ncn_progname}],
[${ncn_target_tool_prefix}${ncn_progname}], , [$4])
fi
if test -z "$ac_cv_prog_$1" && test $build = $target ; then
AC_CHECK_PROG([$1], [${ncn_progname}], [${ncn_progname}], , [$4])
fi
test -n "$ac_cv_prog_$1" && break
done
fi
if test -z "$ac_cv_prog_$1" ; then
ifelse([$3],[], [set dummy $2
if test $build = $target ; then
$1="[$]2"
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$1="${ncn_target_tool_prefix}[$]2"
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$1="$ac_cv_prog_$1"
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PATH_SEPARATOR=';'
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PATH_SEPARATOR=:
fi
rm -f conf$$.sh
fi
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dnl ####
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dnl # Determine GCC version number to use in compiler directories.
AC_DEFUN([GCC_BASE_VER],
[
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AC_ARG_WITH(gcc-major-version-only,
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changequote([,])dnl
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])
AC_SUBST(get_gcc_base_ver)
])
AC_DEFUN([ACX_TOOL_DIRS], [
AC_REQUIRE([ACX_PATH_SEP])
AC_REQUIRE([GCC_BASE_VER])
if test "x$exec_prefix" = xNONE; then
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gcc_cv_tool_prefix=$ac_default_prefix
else
gcc_cv_tool_prefix=$prefix
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else
gcc_cv_tool_prefix=$exec_prefix
fi
# If there is no compiler in the tree, use the PATH only. In any
# case, if there is no compiler in the tree nobody should use
# AS_FOR_TARGET and LD_FOR_TARGET.
if test x$host = x$build && test -f $srcdir/gcc/BASE-VER; then
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changequote(,)dnl
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changequote([,])dnl
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gcc_version=`cat $srcdir/gcc/BASE-VER`
fi
gcc_cv_tool_dirs="$gcc_cv_tool_prefix/libexec/gcc/$target_noncanonical/$gcc_version$PATH_SEPARATOR"
gcc_cv_tool_dirs="$gcc_cv_tool_dirs$gcc_cv_tool_prefix/libexec/gcc/$target_noncanonical$PATH_SEPARATOR"
gcc_cv_tool_dirs="$gcc_cv_tool_dirs/usr/lib/gcc/$target_noncanonical/$gcc_version$PATH_SEPARATOR"
gcc_cv_tool_dirs="$gcc_cv_tool_dirs/usr/lib/gcc/$target_noncanonical$PATH_SEPARATOR"
gcc_cv_tool_dirs="$gcc_cv_tool_dirs$gcc_cv_tool_prefix/$target_noncanonical/bin/$target_noncanonical/$gcc_version$PATH_SEPARATOR"
gcc_cv_tool_dirs="$gcc_cv_tool_dirs$gcc_cv_tool_prefix/$target_noncanonical/bin$PATH_SEPARATOR"
else
gcc_cv_tool_dirs=
fi
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gcc_cv_tool_dirs="$gcc_cv_tool_dirs$md_exec_prefix$PATH_SEPARATOR"
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# ACX_HAVE_GCC_FOR_TARGET
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AC_DEFUN([ACX_HAVE_GCC_FOR_TARGET], [
cat > conftest.c << \EOF
#ifdef __GNUC__
gcc_yay;
#endif
EOF
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have_gcc_for_target=yes
else
GCC_FOR_TARGET=${ncn_target_tool_prefix}gcc
have_gcc_for_target=no
fi
rm conftest.c
])
# ACX_CHECK_INSTALLED_TARGET_TOOL(VAR, PROG)
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#
# First try --with-build-time-tools, if specified.
#
# For build != host, we ask the installed GCC for the name of the tool it
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# installed (or we couldn't make target libraries), and we assume that
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# the same binutils version.
#
# For build == host, search the same directories that the installed
# compiler will search. We used to do this for the assembler, linker,
# and nm only; for simplicity of configuration, however, we extend this
# criterion to tools (such as ar and ranlib) that are never invoked by
# the compiler, to avoid mismatches.
#
# Also note we have to check MD_EXEC_PREFIX before checking the user's path
# if build == target. This makes the most sense only when bootstrapping,
# but we also do so when build != host. In this case, we hope that the
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#
# If we do not find a suitable binary, then try the user's path.
AC_DEFUN([ACX_CHECK_INSTALLED_TARGET_TOOL], [
AC_REQUIRE([ACX_TOOL_DIRS])
AC_REQUIRE([ACX_HAVE_GCC_FOR_TARGET])
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AC_MSG_CHECKING([for $2 in $with_build_time_tools])
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AC_MSG_RESULT([$ac_cv_path_$1])
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AC_MSG_RESULT(no)
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AC_PATH_PROG([$1], [$2], [], [$gcc_cv_tool_dirs])
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$1=$ac_cv_path_$1
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###
# AC_PROG_CPP_WERROR
# Used for autoconf 2.5x to force AC_PREPROC_IFELSE to reject code which
# triggers warnings from the preprocessor. Will be in autoconf 2.58.
# For now, using this also overrides header checks to use only the
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AC_DEFUN([AC_PROG_CPP_WERROR],
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m4_define([AC_CHECK_HEADER],m4_defn([_AC_CHECK_HEADER_OLD]))
ac_c_preproc_warn_flag=yes])# AC_PROG_CPP_WERROR
# Test for GNAT.
# We require the gnatbind & gnatmake programs, as well as a compiler driver
# that understands Ada. We use the user's CC setting, already found, and
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#
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AC_DEFUN([ACX_PROG_GNAT],
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AC_REQUIRE([AC_PROG_CC])
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AC_CHECK_TOOL(GNATMAKE, gnatmake, no)
AC_CACHE_CHECK([whether compiler driver understands Ada],
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procedure conftest is begin null; end conftest;
EOF
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# There is a bug in old released versions of GCC which causes the
# driver to exit successfully when the appropriate language module
# has not been installed. This is fixed in 2.95.4, 3.0.2, and 3.1.
# Therefore we must check for the error message as well as an
# unsuccessful exit.
# Other compilers, like HP Tru64 UNIX cc, exit successfully when
# given a .adb file, but produce no object file. So we must check
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errors=`(${CC} $1[]m4_ifval([$1], [ ])-c conftest.adb) 2>&1 || echo failure`
if test x"$errors" = x && test -f conftest.$ac_objext; then
acx_cv_cc_gcc_supports_ada=yes
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rm -f conftest.*])
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have_gnat=yes
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have_gnat=no
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AC_DEFUN([ACX_PROG_GDC],
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AC_REQUIRE([AC_PROG_CC])
AC_CHECK_TOOL(GDC, gdc, no)
AC_CACHE_CHECK([whether the D compiler works],
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[cat >conftest.d <<EOF
module conftest; int main() { return 0; }
EOF
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if test "x$GDC" != xno; then
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if test x"$errors" = x && test -f conftest.$ac_objext; then
acx_cv_d_compiler_works=yes
fi
rm -f conftest.*
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if test "x$GDC" != xno && test x$acx_cv_d_compiler_works != xno; then
have_gdc=yes
else
have_gdc=no
fi
])
dnl 'make compare' can be significantly faster, if cmp itself can
dnl skip bytes instead of using tail. The test being performed is
dnl "if cmp --ignore-initial=2 t1 t2 && ! cmp --ignore-initial=1 t1 t2"
dnl but we need to sink errors and handle broken shells. We also test
dnl for the parameter format "cmp file1 file2 skip1 skip2" which is
dnl accepted by cmp on some systems.
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if cmp t1 t2 2 2 > /dev/null 2>&1; then
if cmp t1 t2 1 1 > /dev/null 2>&1; then
:
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gcc_cv_prog_cmp_skip='cmp $$f1 $$f2 16 16'
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if cmp --ignore-initial=2 t1 t2 > /dev/null 2>&1; then
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:
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AC_SUBST(do_compare)
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dnl See if stdbool.h properly defines bool and true/false.
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AC_DEFINE(HAVE_STDBOOL_H, 1,
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AC_CACHE_CHECK(for built-in _Bool, gcc_cv_c__bool,
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dnl See if hard links work and if not, try to substitute $1 or simple copy.
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acx_cv_prog_LN=no
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AC_MSG_RESULT([no, using $LN])
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LN="$acx_cv_prog_LN"
AC_MSG_RESULT(yes)
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AC_SUBST(LN)dnl
])
dnl GCC_TARGET_TOOL(PROGRAM, TARGET-VAR, HOST-VAR, IN-TREE-TOOL, LANGUAGE)
AC_DEFUN([GCC_TARGET_TOOL],
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if test "x${build}" != "x${host}" ; then
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ac_dir=`dirname [$]$2`
AC_MSG_RESULT(pre-installed in $ac_dir)
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# Canadian cross, just use what we found
AC_MSG_RESULT(pre-installed)
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else
ifelse([$4],,,
[ok=yes
case " ${configdirs} " in
*" patsubst([$4], [/.*], []) "*) ;;
*) ok=no ;;
esac
ifelse([$5],,,
[case ,${enable_languages}, in
*,$5,*) ;;
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$2='$($3)'
AC_MSG_RESULT(host tool)
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AC_MSG_RESULT(pre-installed)
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dnl Locate a program and check that its version is acceptable.
dnl ACX_PROG_CHECK_VER(var, name, version-switch,
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AC_DEFUN([ACX_CHECK_PROG_VER],[
AC_CHECK_PROG([$1], [$2], [$2])
if test -n "[$]$1"; then
# Found it, now check the version.
AC_CACHE_CHECK([for modern $2],
[gcc_cv_prog_$2_modern],
[ac_prog_version=`eval [$]$1 $3 2>&1 |
sed -n 's/^.*patsubst([[$4]],/,\/).*$/\1/p'`
[case $ac_prog_version in
'') gcc_cv_prog_$2_modern=no;;
$5) gcc_cv_prog_$2_modern=yes;;
*) gcc_cv_prog_$2_modern=no;;
esac]
])
else
gcc_cv_prog_$2_modern=no
fi
if test $gcc_cv_prog_$2_modern = no; then
$1="${CONFIG_SHELL-/bin/sh} $ac_aux_dir/missing $2"
fi
])
dnl Support the --with-pkgversion configure option.
dnl ACX_PKGVERSION(default-pkgversion)
AC_DEFUN([ACX_PKGVERSION],[
AC_ARG_WITH(pkgversion,
AS_HELP_STRING([--with-pkgversion=PKG],
[Use PKG in the version string in place of "$1"]),
[case "$withval" in
yes) AC_MSG_ERROR([package version not specified]) ;;
no) PKGVERSION= ;;
*) PKGVERSION="($withval) " ;;
esac],
PKGVERSION="($1) "
)
AC_SUBST(PKGVERSION)
])
dnl Support the --with-bugurl configure option.
dnl ACX_BUGURL(default-bugurl)
AC_DEFUN([ACX_BUGURL],[
AC_ARG_WITH(bugurl,
AS_HELP_STRING([--with-bugurl=URL],
[Direct users to URL to report a bug]),
[case "$withval" in
yes) AC_MSG_ERROR([bug URL not specified]) ;;
no) BUGURL=
;;
*) BUGURL="$withval"
;;
esac],
BUGURL="$1"
)
case ${BUGURL} in
"")
REPORT_BUGS_TO=
REPORT_BUGS_TEXI=
;;
*)
REPORT_BUGS_TO="<$BUGURL>"
REPORT_BUGS_TEXI=@uref{`echo "$BUGURL" | sed 's/@/@@/g'`}
;;
esac;
AC_SUBST(REPORT_BUGS_TO)
AC_SUBST(REPORT_BUGS_TEXI)
])
dnl ####
dnl # ACX_CHECK_CYGWIN_CAT_WORKS
dnl # On Cygwin hosts, check that the cat command ignores
dnl # carriage returns as otherwise builds will not work.
dnl # See binutils PR 4334 for more details.
AC_DEFUN([ACX_CHECK_CYGWIN_CAT_WORKS],[
AC_MSG_CHECKING([to see if cat works as expected])
echo a >cygwin-cat-check
if test `cat cygwin-cat-check` = a ; then
rm cygwin-cat-check
AC_MSG_RESULT(yes)
else
rm cygwin-cat-check
AC_MSG_RESULT(no)
AC_MSG_ERROR([The cat command does not ignore carriage return characters.
Please either mount the build directory in binary mode or run the following
commands before running any configure script:
set -o igncr
export SHELLOPTS
])
fi
])