mirror of
https://sourceware.org/git/binutils-gdb.git
synced 2024-12-21 04:42:53 +08:00
2faa2958b5
Sync from gcc:
2005-04-22 Bernd Schmidt <bernd.schmidt@analog.com>
* config.sub: Update from master copy.
2005-04-19 Hans-Peter Nilsson <hp@axis.com>
* configure.in <crisv32-*-*, cris-*-*>: New local variable
libgcj_ex_libffi. Have specific match for *-*-linux*. Separate
matches for "*-*-aout" and "*-*-elf". Don't disable libffi for
"*-*-elf" and "*-*-linux*".
* configure: Regenerate.
config:
2005-04-29 Paolo Bonzini <bonzini@gnu.org>
* acx.m4 (ACX_PROG_GNAT): Remove stray break.
313 lines
10 KiB
Plaintext
313 lines
10 KiB
Plaintext
# Autoconf M4 include file defining utility macros for complex Canadian
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# cross builds.
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dnl ####
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dnl # _GCC_TOPLEV_NONCANONICAL_BUILD
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dnl # $build_alias or canonical $build if blank.
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dnl # Used when we would use $build_alias, but empty is not OK.
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AC_DEFUN([_GCC_TOPLEV_NONCANONICAL_BUILD],
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[AC_REQUIRE([AC_CANONICAL_BUILD]) []dnl
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case ${build_alias} in
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"") build_noncanonical=${build} ;;
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*) build_noncanonical=${build_alias} ;;
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esac
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]) []dnl # _GCC_TOPLEV_NONCANONICAL_BUILD
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dnl ####
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dnl # _GCC_TOPLEV_NONCANONICAL_HOST
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dnl # $host_alias, or $build_noncanonical if blank.
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dnl # Used when we would use $host_alias, but empty is not OK.
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AC_DEFUN([_GCC_TOPLEV_NONCANONICAL_HOST],
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[AC_REQUIRE([_GCC_TOPLEV_NONCANONICAL_BUILD]) []dnl
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case ${host_alias} in
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"") host_noncanonical=${build_noncanonical} ;;
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*) host_noncanonical=${host_alias} ;;
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esac
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]) []dnl # _GCC_TOPLEV_NONCANONICAL_HOST
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dnl ####
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dnl # _GCC_TOPLEV_NONCANONICAL_TARGET
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dnl # $target_alias or $host_noncanonical if blank.
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dnl # Used when we would use $target_alias, but empty is not OK.
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AC_DEFUN([_GCC_TOPLEV_NONCANONICAL_TARGET],
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[AC_REQUIRE([_GCC_TOPLEV_NONCANONICAL_HOST]) []dnl
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case ${target_alias} in
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"") target_noncanonical=${host_noncanonical} ;;
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*) target_noncanonical=${target_alias} ;;
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esac
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]) []dnl # _GCC_TOPLEV_NONCANONICAL_TARGET
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dnl ####
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dnl # ACX_NONCANONICAL_BUILD
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dnl # Like underscored version, but AC_SUBST's.
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AC_DEFUN([ACX_NONCANONICAL_BUILD],
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[AC_REQUIRE([_GCC_TOPLEV_NONCANONICAL_BUILD]) []dnl
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AC_SUBST(build_noncanonical)
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]) []dnl # ACX_NONCANONICAL_BUILD
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dnl ####
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dnl # ACX_NONCANONICAL_HOST
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dnl # Like underscored version, but AC_SUBST's.
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AC_DEFUN([ACX_NONCANONICAL_HOST],
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[AC_REQUIRE([_GCC_TOPLEV_NONCANONICAL_HOST]) []dnl
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AC_SUBST(host_noncanonical)
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]) []dnl # ACX_NONCANONICAL_HOST
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dnl ####
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dnl # ACX_NONCANONICAL_TARGET
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dnl # Like underscored version, but AC_SUBST's.
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AC_DEFUN([ACX_NONCANONICAL_TARGET],
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[AC_REQUIRE([_GCC_TOPLEV_NONCANONICAL_TARGET]) []dnl
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AC_SUBST(target_noncanonical)
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]) []dnl # ACX_NONCANONICAL_TARGET
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dnl ####
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dnl # GCC_TOPLEV_SUBDIRS
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dnl # GCC & friends build 'build', 'host', and 'target' tools. These must
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dnl # be separated into three well-known subdirectories of the build directory:
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dnl # build_subdir, host_subdir, and target_subdir. The values are determined
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dnl # here so that they can (theoretically) be changed in the future. They
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dnl # were previously reproduced across many different files.
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dnl #
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dnl # This logic really amounts to very little with autoconf 2.13; it will
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dnl # amount to a lot more with autoconf 2.5x.
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AC_DEFUN([GCC_TOPLEV_SUBDIRS],
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[AC_REQUIRE([_GCC_TOPLEV_NONCANONICAL_TARGET]) []dnl
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AC_REQUIRE([_GCC_TOPLEV_NONCANONICAL_BUILD]) []dnl
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# Prefix 'build-' so this never conflicts with target_subdir.
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build_subdir="build-${build_noncanonical}"
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# --srcdir=. covers the toplevel, while "test -d" covers the subdirectories
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if ( test $srcdir = . && test -d gcc ) \
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|| test -d $srcdir/../host-${host_noncanonical}; then
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host_subdir="host-${host_noncanonical}"
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else
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host_subdir=.
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fi
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# No prefix.
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target_subdir=${target_noncanonical}
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AC_SUBST([build_subdir]) []dnl
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AC_SUBST([host_subdir]) []dnl
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AC_SUBST([target_subdir]) []dnl
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]) []dnl # GCC_TOPLEV_SUBDIRS
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####
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# _NCN_TOOL_PREFIXES: Some stuff that oughtta be done in AC_CANONICAL_SYSTEM
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# or AC_INIT.
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# These demand that AC_CANONICAL_SYSTEM be called beforehand.
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AC_DEFUN([_NCN_TOOL_PREFIXES],
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[ncn_tool_prefix=
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test -n "$host_alias" && ncn_tool_prefix=$host_alias-
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ncn_target_tool_prefix=
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test -n "$target_alias" && ncn_target_tool_prefix=$target_alias-
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]) []dnl # _NCN_TOOL_PREFIXES
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####
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# NCN_CHECK_TARGET_TOOL(variable, prog-to-check-for,[value-if-not-found],[path])
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# Like AC_CHECK_TOOL, but tries a prefix of the target, not the host.
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# Code is pretty much lifted from autoconf2.53.
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AC_DEFUN([NCN_CHECK_TARGET_TOOL],
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[AC_REQUIRE([_NCN_TOOL_PREFIXES]) []dnl
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if test -n "$ncn_target_tool_prefix"; then
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AC_CHECK_PROG([$1], [${ncn_target_tool_prefix}$2],
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[${ncn_target_tool_prefix}$2], , [$4])
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fi
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if test -z "$ac_cv_prog_$1" ; then
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ncn_cv_$1=$$1
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AC_CHECK_PROG([ncn_cv_$1], [$2], [$2], [$3], [$4])
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$1=$ncn_cv_$1
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else
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$1="$ac_cv_prog_$1"
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fi
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]) []dnl # NCN_CHECK_TARGET_TOOL
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####
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# NCN_STRICT_CHECK_TOOL(variable, prog-to-check-for,[value-if-not-found],[path])
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# Like AC_CHECK_TOOL, but requires the prefix if build!=host.
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AC_DEFUN([NCN_STRICT_CHECK_TOOL],
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[AC_REQUIRE([_NCN_TOOL_PREFIXES]) []dnl
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if test -n "$ncn_tool_prefix"; then
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AC_CHECK_PROG([$1], [${ncn_tool_prefix}$2],
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[${ncn_tool_prefix}$2], , [$4])
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fi
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if test -z "$ac_cv_prog_$1" ; then
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if test $build = $host ; then
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ncn_cv_$1=$$1
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AC_CHECK_PROG([ncn_cv_$1], [$2], [$2], [ifelse([$3],[],[$2],[$3])], [$4])
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$1=$ncn_cv_$1
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else
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$1="ifelse([$3],[],[${ncn_tool_prefix}$2],[$3])"
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fi
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else
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$1="$ac_cv_prog_$1"
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fi
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]) []dnl # NCN_STRICT_CHECK_TOOL
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####
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# NCN_STRICT_CHECK_TARGET_TOOL(variable, prog-to-check-for,[value-if-not-found],[path])
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# Like NCN_CHECK_TARGET_TOOL, but requires the prefix if build!=target.
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AC_DEFUN([NCN_STRICT_CHECK_TARGET_TOOL],
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[AC_REQUIRE([_NCN_TOOL_PREFIXES]) []dnl
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if test -n "$ncn_target_tool_prefix"; then
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AC_CHECK_PROG([$1], [${ncn_target_tool_prefix}$2],
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[${ncn_target_tool_prefix}$2], , [$4])
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fi
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if test -z "$ac_cv_prog_$1" ; then
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if test $build = $target ; then
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ncn_cv_$1=$$1
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AC_CHECK_PROG([ncn_cv_$1], [$2], [$2], [ifelse([$3],[],[$2],[$3])], [$4])
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$1=$ncn_cv_$1
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else
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$1="ifelse([$3],[],[${ncn_target_tool_prefix}$2],[$3])"
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fi
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else
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$1="$ac_cv_prog_$1"
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fi
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]) []dnl # NCN_STRICT_CHECK_TARGET_TOOL
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###
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# AC_PROG_CPP_WERROR
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# Used for autoconf 2.5x to force AC_PREPROC_IFELSE to reject code which
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# triggers warnings from the preprocessor. Will be in autoconf 2.58.
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# For now, using this also overrides header checks to use only the
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# preprocessor (matches 2.13 behavior; matching 2.58's behavior is a
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# bit harder from here).
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# Eventually autoconf will default to checking headers with the compiler
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# instead, and we'll have to do this differently.
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AC_DEFUN([AC_PROG_CPP_WERROR],
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[AC_REQUIRE([AC_PROG_CPP])dnl
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m4_define([AC_CHECK_HEADER],m4_defn([_AC_CHECK_HEADER_OLD]))
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ac_c_preproc_warn_flag=yes])# AC_PROG_CPP_WERROR
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# Test for GNAT.
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# We require the gnatbind program, and a compiler driver that
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# understands Ada. We use the user's CC setting, already found.
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#
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# Sets the shell variable have_gnat to yes or no as appropriate, and
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# substitutes GNATBIND.
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AC_DEFUN([ACX_PROG_GNAT],
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[AC_REQUIRE([AC_CHECK_TOOL_PREFIX])
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AC_REQUIRE([AC_PROG_CC])
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AC_CHECK_TOOL(GNATBIND, gnatbind, no)
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AC_CACHE_CHECK([whether compiler driver understands Ada],
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acx_cv_cc_gcc_supports_ada,
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[cat >conftest.adb <<EOF
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procedure conftest is begin null; end conftest;
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EOF
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acx_cv_cc_gcc_supports_ada=no
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# There is a bug in old released versions of GCC which causes the
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# driver to exit successfully when the appropriate language module
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# has not been installed. This is fixed in 2.95.4, 3.0.2, and 3.1.
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# Therefore we must check for the error message as well as an
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# unsuccessful exit.
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# Other compilers, like HP Tru64 UNIX cc, exit successfully when
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# given a .adb file, but produce no object file. So we must check
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# if an object file was really produced to guard against this.
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errors=`(${CC} -c conftest.adb) 2>&1 || echo failure`
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if test x"$errors" = x && test -f conftest.$ac_objext; then
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acx_cv_cc_gcc_supports_ada=yes
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fi
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rm -f conftest.*])
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if test x$GNATBIND != xno && test x$acx_cv_cc_gcc_supports_ada != xno; then
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have_gnat=yes
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else
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have_gnat=no
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fi
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])
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dnl 'make compare' can be significantly faster, if cmp itself can
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dnl skip bytes instead of using tail. The test being performed is
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dnl "if cmp --ignore-initial=2 t1 t2 && ! cmp --ignore-initial=1 t1 t2"
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dnl but we need to sink errors and handle broken shells. We also test
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dnl for the parameter format "cmp file1 file2 skip1 skip2" which is
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dnl accepted by cmp on some systems.
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AC_DEFUN([ACX_PROG_CMP_IGNORE_INITIAL],
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[AC_CACHE_CHECK([how to compare bootstrapped objects], gcc_cv_prog_cmp_skip,
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[ echo abfoo >t1
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echo cdfoo >t2
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gcc_cv_prog_cmp_skip='tail +16c $$f1 > tmp-foo1; tail +16c $$f2 > tmp-foo2; cmp tmp-foo1 tmp-foo2'
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if cmp t1 t2 2 2 > /dev/null 2>&1; then
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if cmp t1 t2 1 1 > /dev/null 2>&1; then
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:
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else
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gcc_cv_prog_cmp_skip='cmp $$f1 $$f2 16 16'
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fi
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fi
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if cmp --ignore-initial=2 t1 t2 > /dev/null 2>&1; then
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if cmp --ignore-initial=1 t1 t2 > /dev/null 2>&1; then
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:
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else
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gcc_cv_prog_cmp_skip='cmp --ignore-initial=16 $$f1 $$f2'
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fi
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fi
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rm t1 t2
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])
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do_compare="$gcc_cv_prog_cmp_skip"
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AC_SUBST(do_compare)
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])
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dnl See whether we can include both string.h and strings.h.
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AC_DEFUN([ACX_HEADER_STRING],
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[AC_CACHE_CHECK([whether string.h and strings.h may both be included],
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gcc_cv_header_string,
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[AC_TRY_COMPILE([#include <string.h>
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#include <strings.h>], , gcc_cv_header_string=yes, gcc_cv_header_string=no)])
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if test $gcc_cv_header_string = yes; then
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AC_DEFINE(STRING_WITH_STRINGS, 1, [Define if you can safely include both <string.h> and <strings.h>.])
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fi
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])
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dnl See if stdbool.h properly defines bool and true/false.
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dnl Check whether _Bool is built-in.
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AC_DEFUN([ACX_HEADER_STDBOOL],
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[AC_CACHE_CHECK([for working stdbool.h],
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ac_cv_header_stdbool_h,
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[AC_TRY_COMPILE([#include <stdbool.h>],
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[bool foo = false;],
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ac_cv_header_stdbool_h=yes, ac_cv_header_stdbool_h=no)])
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if test $ac_cv_header_stdbool_h = yes; then
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AC_DEFINE(HAVE_STDBOOL_H, 1,
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[Define if you have a working <stdbool.h> header file.])
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fi
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AC_CACHE_CHECK(for built-in _Bool, gcc_cv_c__bool,
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[AC_TRY_COMPILE(,
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[_Bool foo;],
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gcc_cv_c__bool=yes, gcc_cv_c__bool=no)
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])
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if test $gcc_cv_c__bool = yes; then
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AC_DEFINE(HAVE__BOOL, 1, [Define if the \`_Bool' type is built-in.])
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fi
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])
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dnl See if hard links work and if not, try to substitute $1 or simple copy.
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AC_DEFUN([ACX_PROG_LN],
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[AC_MSG_CHECKING(whether ln works)
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AC_CACHE_VAL(acx_cv_prog_LN,
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[rm -f conftestdata_t
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echo >conftestdata_f
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if ln conftestdata_f conftestdata_t 2>/dev/null
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then
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acx_cv_prog_LN=ln
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else
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acx_cv_prog_LN=no
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fi
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rm -f conftestdata_f conftestdata_t
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])dnl
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if test $acx_cv_prog_LN = no; then
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LN="ifelse([$1],,cp,[$1])"
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AC_MSG_RESULT([no, using $LN])
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else
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LN="$acx_cv_prog_LN"
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AC_MSG_RESULT(yes)
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fi
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AC_SUBST(LN)dnl
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])
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