1db673ca87
* configure: Regenerate. config: * acx.m4 (ACX_PROG_GNAT): Check if ${CC} produces object file for Ada compilation. Fix acx_cv_cc_gcc_supports_ada spelling. From-SVN: r80771
196 lines
6.5 KiB
Plaintext
196 lines
6.5 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=${target_alias} ;;
|
|
esac
|
|
]) []dnl # _GCC_TOPLEV_NONCANONICAL_TARGET
|
|
|
|
dnl ####
|
|
dnl # GCC_TOPLEV_SUBDIRS
|
|
dnl # GCC & friends build 'build', 'host', and 'target' tools. These must
|
|
dnl # be separated into three well-known subdirectories of the build directory:
|
|
dnl # build_subdir, host_subdir, and target_subdir. The values are determined
|
|
dnl # here so that they can (theoretically) be changed in the future. They
|
|
dnl # were previously reproduced across many different files.
|
|
dnl #
|
|
dnl # This logic really amounts to very little with autoconf 2.13; it will
|
|
dnl # amount to a lot more with autoconf 2.5x.
|
|
AC_DEFUN([GCC_TOPLEV_SUBDIRS],
|
|
[AC_REQUIRE([_GCC_TOPLEV_NONCANONICAL_TARGET]) []dnl
|
|
AC_REQUIRE([_GCC_TOPLEV_NONCANONICAL_BUILD]) []dnl
|
|
# Prefix 'build-' so this never conflicts with target_subdir.
|
|
build_subdir="build-${build_noncanonical}"
|
|
# Not really a subdirectory, but here for completeness.
|
|
host_subdir=.
|
|
# No prefix.
|
|
target_subdir=${target_noncanonical}
|
|
AC_SUBST([build_subdir]) []dnl
|
|
AC_SUBST([host_subdir]) []dnl
|
|
AC_SUBST([target_subdir]) []dnl
|
|
]) []dnl # GCC_TOPLEV_SUBDIRS
|
|
|
|
|
|
####
|
|
# _NCN_TOOL_PREFIXES: Some stuff that oughtta be done in AC_CANONICAL_SYSTEM
|
|
# or AC_INIT.
|
|
# These demand that AC_CANONICAL_SYSTEM be called beforehand.
|
|
AC_DEFUN([_NCN_TOOL_PREFIXES],
|
|
[ncn_tool_prefix=
|
|
test -n "$host_alias" && ncn_tool_prefix=$host_alias-
|
|
ncn_target_tool_prefix=
|
|
test -n "$target_alias" && ncn_target_tool_prefix=$target_alias-
|
|
]) []dnl # _NCN_TOOL_PREFIXES
|
|
|
|
####
|
|
# NCN_CHECK_TARGET_TOOL(variable, prog-to-check-for,[value-if-not-found],[path])
|
|
# Like AC_CHECK_TOOL, but tries a prefix of the target, not the host.
|
|
# Code is pretty much lifted from autoconf2.53.
|
|
|
|
AC_DEFUN([NCN_CHECK_TARGET_TOOL],
|
|
[AC_REQUIRE([_NCN_TOOL_PREFIXES]) []dnl
|
|
if test -n "$ncn_target_tool_prefix"; then
|
|
AC_CHECK_PROG([$1], [${ncn_target_tool_prefix}$2],
|
|
[${ncn_target_tool_prefix}$2], , [$4])
|
|
fi
|
|
if test -z "$ac_cv_prog_$1" ; then
|
|
ncn_cv_$1=$$1
|
|
AC_CHECK_PROG([ncn_cv_$1], [$2], [$2], [$3], [$4])
|
|
$1=$ncn_cv_$1
|
|
else
|
|
$1="$ac_cv_prog_$1"
|
|
fi
|
|
]) []dnl # NCN_CHECK_TARGET_TOOL
|
|
|
|
|
|
####
|
|
# NCN_STRICT_CHECK_TOOL(variable, prog-to-check-for,[value-if-not-found],[path])
|
|
# Like AC_CHECK_TOOL, but requires the prefix if build!=host.
|
|
|
|
AC_DEFUN([NCN_STRICT_CHECK_TOOL],
|
|
[AC_REQUIRE([_NCN_TOOL_PREFIXES]) []dnl
|
|
if test -n "$ncn_tool_prefix"; then
|
|
AC_CHECK_PROG([$1], [${ncn_tool_prefix}$2],
|
|
[${ncn_tool_prefix}$2], , [$4])
|
|
fi
|
|
if test -z "$ac_cv_prog_$1" ; then
|
|
if test $build = $host ; then
|
|
ncn_cv_$1=$$1
|
|
AC_CHECK_PROG([ncn_cv_$1], [$2], [$2], [ifelse([$3],[],[$2],[$3])], [$4])
|
|
$1=$ncn_cv_$1
|
|
else
|
|
$1="ifelse([$3],[],[${ncn_tool_prefix}$2],[$3])"
|
|
fi
|
|
else
|
|
$1="$ac_cv_prog_$1"
|
|
fi
|
|
]) []dnl # NCN_STRICT_CHECK_TOOL
|
|
|
|
|
|
####
|
|
# NCN_STRICT_CHECK_TARGET_TOOL(variable, prog-to-check-for,[value-if-not-found],[path])
|
|
# Like NCN_CHECK_TARGET_TOOL, but requires the prefix if build!=target.
|
|
|
|
AC_DEFUN([NCN_STRICT_CHECK_TARGET_TOOL],
|
|
[AC_REQUIRE([_NCN_TOOL_PREFIXES]) []dnl
|
|
if test -n "$ncn_target_tool_prefix"; then
|
|
AC_CHECK_PROG([$1], [${ncn_target_tool_prefix}$2],
|
|
[${ncn_target_tool_prefix}$2], , [$4])
|
|
fi
|
|
if test -z "$ac_cv_prog_$1" ; then
|
|
if test $build = $target ; then
|
|
ncn_cv_$1=$$1
|
|
AC_CHECK_PROG([ncn_cv_$1], [$2], [$2], [ifelse([$3],[],[$2],[$3])], [$4])
|
|
$1=$ncn_cv_$1
|
|
else
|
|
$1="ifelse([$3],[],[${ncn_target_tool_prefix}$2],[$3])"
|
|
fi
|
|
else
|
|
$1="$ac_cv_prog_$1"
|
|
fi
|
|
]) []dnl # NCN_STRICT_CHECK_TARGET_TOOL
|
|
|
|
###
|
|
# AC_PROG_CPP_WERROR
|
|
# Used for autoconf 2.5x to force AC_PREPROC_IFELSE to reject code which
|
|
# triggers warnings from the preprocessor. Will be in autoconf 2.58.
|
|
# For now, using this also overrides header checks to use only the
|
|
# preprocessor (matches 2.13 behavior; matching 2.58's behavior is a
|
|
# bit harder from here).
|
|
# Eventually autoconf will default to checking headers with the compiler
|
|
# instead, and we'll have to do this differently.
|
|
|
|
AC_DEFUN([AC_PROG_CPP_WERROR],
|
|
[AC_REQUIRE([AC_PROG_CPP])dnl
|
|
m4_define([AC_CHECK_HEADER],m4_defn([_AC_CHECK_HEADER_OLD]))
|
|
ac_c_preproc_warn_flag=yes])# AC_PROG_CPP_WERROR
|
|
|
|
# Test for GNAT.
|
|
# We require the gnatbind program, and a compiler driver that
|
|
# understands Ada. We use the user's CC setting, already found.
|
|
#
|
|
# Sets the shell variable have_gnat to yes or no as appropriate, and
|
|
# substitutes GNATBIND.
|
|
AC_DEFUN([ACX_PROG_GNAT],
|
|
[AC_REQUIRE([AC_CHECK_TOOL_PREFIX])
|
|
AC_REQUIRE([AC_PROG_CC])
|
|
AC_CHECK_TOOL(GNATBIND, gnatbind, no)
|
|
AC_CACHE_CHECK([whether compiler driver understands Ada],
|
|
acx_cv_cc_gcc_supports_ada,
|
|
[cat >conftest.adb <<EOF
|
|
procedure conftest is begin null; end conftest;
|
|
EOF
|
|
acx_cv_cc_gcc_supports_ada=no
|
|
# There is a bug in old released versions of GCC which causes the
|
|
# driver to exit successfully when the appropriate language module
|
|
# has not been installed. This is fixed in 2.95.4, 3.0.2, and 3.1.
|
|
# Therefore we must check for the error message as well as an
|
|
# unsuccessful exit.
|
|
# Other compilers, like HP Tru64 UNIX cc, exit successfully when
|
|
# given a .adb file, but produce no object file. So we must check
|
|
# if an object file was really produced to guard against this.
|
|
errors=`(${CC} -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
|
|
break
|
|
fi
|
|
rm -f conftest.*])
|
|
|
|
if test x$GNATBIND != xno && test x$acx_cv_cc_gcc_supports_ada != xno; then
|
|
have_gnat=yes
|
|
else
|
|
have_gnat=no
|
|
fi
|
|
])
|