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Diffstat (limited to 'contrib/gcc/configure.ac')
| -rw-r--r-- | contrib/gcc/configure.ac | 3169 |
1 files changed, 3169 insertions, 0 deletions
diff --git a/contrib/gcc/configure.ac b/contrib/gcc/configure.ac new file mode 100644 index 0000000..0aadf4e --- /dev/null +++ b/contrib/gcc/configure.ac @@ -0,0 +1,3169 @@ +# configure.ac for GCC +# Process this file with autoconf to generate a configuration script. + +# Copyright 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004 +# Free Software Foundation, Inc. + +#This file is part of GCC. + +#GCC is free software; you can redistribute it and/or modify it under +#the terms of the GNU General Public License as published by the Free +#Software Foundation; either version 2, or (at your option) any later +#version. + +#GCC is distributed in the hope that it will be useful, but WITHOUT +#ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or +#FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License +#for more details. + +#You should have received a copy of the GNU General Public License +#along with GCC; see the file COPYING. If not, write to the Free +#Software Foundation, 59 Temple Place - Suite 330, Boston, MA +#02111-1307, USA. + +# -------------------------------- +# Initialization and sanity checks +# -------------------------------- + +AC_PREREQ(2.57) +AC_INIT +AC_CONFIG_SRCDIR(tree.c) +AC_CONFIG_HEADER(auto-host.h:config.in) + +# Determine the host, build, and target systems +AC_CANONICAL_BUILD +AC_CANONICAL_HOST +AC_CANONICAL_TARGET + +# Determine the noncanonical target name, for directory use. +_GCC_TOPLEV_NONCANONICAL_TARGET + +# Determine the target- and build-specific subdirectories +GCC_TOPLEV_SUBDIRS + +# Set program_transform_name +AC_ARG_PROGRAM + +# Check for bogus environment variables. +# Test if LIBRARY_PATH contains the notation for the current directory +# since this would lead to problems installing/building glibc. +# LIBRARY_PATH contains the current directory if one of the following +# is true: +# - one of the terminals (":" and ";") is the first or last sign +# - two terminals occur directly after each other +# - the path contains an element with a dot in it +AC_MSG_CHECKING(LIBRARY_PATH variable) +changequote(,)dnl +case ${LIBRARY_PATH} in + [:\;]* | *[:\;] | *[:\;][:\;]* | *[:\;]. | .[:\;]*| . | *[:\;].[:\;]* ) + library_path_setting="contains current directory" + ;; + *) + library_path_setting="ok" + ;; +esac +changequote([,])dnl +AC_MSG_RESULT($library_path_setting) +if test "$library_path_setting" != "ok"; then +AC_MSG_ERROR([ +*** LIBRARY_PATH shouldn't contain the current directory when +*** building gcc. Please change the environment variable +*** and run configure again.]) +fi + +# Test if GCC_EXEC_PREFIX contains the notation for the current directory +# since this would lead to problems installing/building glibc. +# GCC_EXEC_PREFIX contains the current directory if one of the following +# is true: +# - one of the terminals (":" and ";") is the first or last sign +# - two terminals occur directly after each other +# - the path contains an element with a dot in it +AC_MSG_CHECKING(GCC_EXEC_PREFIX variable) +changequote(,)dnl +case ${GCC_EXEC_PREFIX} in + [:\;]* | *[:\;] | *[:\;][:\;]* | *[:\;]. | .[:\;]*| . | *[:\;].[:\;]* ) + gcc_exec_prefix_setting="contains current directory" + ;; + *) + gcc_exec_prefix_setting="ok" + ;; +esac +changequote([,])dnl +AC_MSG_RESULT($gcc_exec_prefix_setting) +if test "$gcc_exec_prefix_setting" != "ok"; then +AC_MSG_ERROR([ +*** GCC_EXEC_PREFIX shouldn't contain the current directory when +*** building gcc. Please change the environment variable +*** and run configure again.]) +fi + +# ----------- +# Directories +# ----------- + +# Specify the local prefix +local_prefix= +AC_ARG_WITH(local-prefix, +[ --with-local-prefix=DIR specifies directory to put local include], +[case "${withval}" in +yes) AC_MSG_ERROR(bad value ${withval} given for local include directory prefix) ;; +no) ;; +*) local_prefix=$with_local_prefix ;; +esac]) + +# Default local prefix if it is empty +if test x$local_prefix = x; then + local_prefix=/usr/local +fi + +# Don't set gcc_gxx_include_dir to gxx_include_dir since that's only +# passed in by the toplevel make and thus we'd get different behavior +# depending on where we built the sources. +gcc_gxx_include_dir= +# Specify the g++ header file directory +AC_ARG_WITH(gxx-include-dir, +[ --with-gxx-include-dir=DIR + specifies directory to put g++ header files], +[case "${withval}" in +yes) AC_MSG_ERROR(bad value ${withval} given for g++ include directory) ;; +no) ;; +*) gcc_gxx_include_dir=$with_gxx_include_dir ;; +esac]) + +if test x${gcc_gxx_include_dir} = x; then + if test x${enable_version_specific_runtime_libs} = xyes; then + gcc_gxx_include_dir='${libsubdir}/include/c++' + else + topsrcdir=${srcdir}/.. . ${srcdir}/../config.if +changequote(<<, >>)dnl + gcc_gxx_include_dir="\$(libsubdir)/\$(unlibsubdir)/..\`echo \$(exec_prefix) | sed -e 's|^\$(prefix)||' -e 's|/[^/]*|/..|g'\`/include/"${libstdcxx_incdir} +changequote([, ])dnl + fi +fi + +AC_ARG_WITH(cpp_install_dir, +[ --with-cpp-install-dir=DIR + install the user visible C preprocessor in DIR + (relative to PREFIX) as well as PREFIX/bin], +[if test x$withval = xyes; then + AC_MSG_ERROR([option --with-cpp-install-dir requires an argument]) +elif test x$withval != xno; then + cpp_install_dir=$withval +fi]) + +# We would like to our source tree to be readonly. However when releases or +# pre-releases are generated, the flex/bison generated files as well as the +# various formats of manuals need to be included along with the rest of the +# sources. Therefore we have --enable-generated-files-in-srcdir to do +# just that. + +AC_MSG_CHECKING([whether to place generated files in the source directory]) + dnl generated-files-in-srcdir is disabled by default + AC_ARG_ENABLE(generated-files-in-srcdir, +[ --enable-generated-files-in-srcdir + put copies of generated files in source dir + intended for creating source tarballs for users + without texinfo bison or flex.], + generated_files_in_srcdir=$enableval, + generated_files_in_srcdir=no) + +AC_MSG_RESULT($generated_files_in_srcdir) + +if test "$generated_files_in_srcdir" = "yes"; then + GENINSRC='' +else + GENINSRC='#' +fi +AC_SUBST(GENINSRC) + +# ------------------- +# Find default linker +# ------------------- + +# With GNU ld +AC_ARG_WITH(gnu-ld, +[ --with-gnu-ld arrange to work with GNU ld.], +gnu_ld_flag="$with_gnu_ld", +gnu_ld_flag=no) + +# With pre-defined ld +AC_ARG_WITH(ld, +[ --with-ld arrange to use the specified ld (full pathname)], +DEFAULT_LINKER="$with_ld") +if test x"${DEFAULT_LINKER+set}" = x"set"; then + if test ! -x "$DEFAULT_LINKER"; then + AC_MSG_WARN([cannot execute: $DEFAULT_LINKER: check --with-ld or env. var. DEFAULT_LINKER]) + elif $DEFAULT_LINKER -v < /dev/null 2>&1 | grep GNU > /dev/null; then + gnu_ld_flag=yes + fi + AC_DEFINE_UNQUOTED(DEFAULT_LINKER,"$DEFAULT_LINKER", + [Define to enable the use of a default linker.]) +fi + +AC_MSG_CHECKING([whether a default linker was specified]) +if test x"${DEFAULT_LINKER+set}" = x"set"; then + if test x"$gnu_ld_flag" = x"no"; then + AC_MSG_RESULT([yes ($DEFAULT_LINKER)]) + else + AC_MSG_RESULT([yes ($DEFAULT_LINKER - GNU ld)]) + fi +else + AC_MSG_RESULT(no) +fi + +# ---------------------- +# Find default assembler +# ---------------------- + +# With GNU as +AC_ARG_WITH(gnu-as, +[ --with-gnu-as arrange to work with GNU as], +gas_flag="$with_gnu_as", +gas_flag=no) + +AC_ARG_WITH(as, +[ --with-as arrange to use the specified as (full pathname)], +DEFAULT_ASSEMBLER="$with_as") +if test x"${DEFAULT_ASSEMBLER+set}" = x"set"; then + if test ! -x "$DEFAULT_ASSEMBLER"; then + AC_MSG_WARN([cannot execute: $DEFAULT_ASSEMBLER: check --with-as or env. var. DEFAULT_ASSEMBLER]) + elif $DEFAULT_ASSEMBLER -v < /dev/null 2>&1 | grep GNU > /dev/null; then + gas_flag=yes + fi + AC_DEFINE_UNQUOTED(DEFAULT_ASSEMBLER,"$DEFAULT_ASSEMBLER", + [Define to enable the use of a default assembler.]) +fi + +AC_MSG_CHECKING([whether a default assembler was specified]) +if test x"${DEFAULT_ASSEMBLER+set}" = x"set"; then + if test x"$gas_flag" = x"no"; then + AC_MSG_RESULT([yes ($DEFAULT_ASSEMBLER)]) + else + AC_MSG_RESULT([yes ($DEFAULT_ASSEMBLER - GNU as)]) + fi +else + AC_MSG_RESULT(no) +fi + +# --------------- +# Find C compiler +# --------------- + +# If a non-executable a.out is present (e.g. created by GNU as above even if +# invoked with -v only), the IRIX 6 native ld just overwrites the existing +# file, even when creating an executable, so an execution test fails. +# Remove possible default executable files to avoid this. +# +# FIXME: This really belongs into AC_PROG_CC and can be removed once +# Autoconf includes it. +rm -f a.out a.exe b.out + +# Find the native compiler +AC_PROG_CC +AC_PROG_CC_C_O +# autoconf is lame and doesn't give us any substitution variable for this. +if eval "test \"`echo '$ac_cv_prog_cc_'${ac_cc}_c_o`\" = no"; then + NO_MINUS_C_MINUS_O=yes +else + OUTPUT_OPTION='-o $@' +fi +AC_SUBST(NO_MINUS_C_MINUS_O) +AC_SUBST(OUTPUT_OPTION) + +# ------------------------- +# Check C compiler features +# ------------------------- + +AC_CACHE_CHECK(whether ${CC-cc} accepts -Wno-long-long, +ac_cv_prog_cc_no_long_long, +[save_CFLAGS="$CFLAGS" +CFLAGS="-Wno-long-long" +AC_TRY_COMPILE(,,ac_cv_prog_cc_no_long_long=yes, + ac_cv_prog_cc_no_long_long=no) +CFLAGS="$save_CFLAGS"]) + +AC_PROG_CPP +AC_C_INLINE + +gcc_AC_C_LONG_LONG +gcc_AC_C__BOOL + +# sizeof(char) is 1 by definition. +AC_COMPILE_CHECK_SIZEOF(void *) +AC_COMPILE_CHECK_SIZEOF(short) +AC_COMPILE_CHECK_SIZEOF(int) +AC_COMPILE_CHECK_SIZEOF(long) +if test $ac_cv_c_long_long = yes; then + AC_COMPILE_CHECK_SIZEOF(long long) +fi +if test $ac_cv_c___int64 = yes; then + AC_COMPILE_CHECK_SIZEOF(__int64) +fi + +# ----------------- +# Find Ada compiler +# ----------------- + +# See if GNAT has been installed +gcc_AC_PROG_GNAT + +# --------------------- +# Warnings and checking +# --------------------- + +strict1_warn= +if test $ac_cv_prog_cc_no_long_long = yes ; then + strict1_warn="-pedantic -Wno-long-long" +fi +AC_SUBST(strict1_warn) + +# If the native compiler is GCC, we can enable warnings even in stage1. +# That's useful for people building cross-compilers, or just running a +# quick `make'. +warn_cflags= +if test "x$GCC" = "xyes"; then + warn_cflags='$(GCC_WARN_CFLAGS)' +fi +AC_SUBST(warn_cflags) + +# Enable -Werror in bootstrap stage2 and later. +# Change the default to "no" on release branches. +AC_ARG_ENABLE(werror, +[ --enable-werror enable -Werror in bootstrap stage2 and later], [], +[enable_werror=no]) +if test x$enable_werror = xyes ; then + WERROR=-Werror +fi +AC_SUBST(WERROR) + +# Enable expensive internal checks +AC_ARG_ENABLE(checking, +[ --enable-checking[=LIST] + enable expensive run-time checks. With LIST, + enable only specific categories of checks. + Categories are: misc,tree,rtl,rtlflag,gc,gcac,fold; + default is no checking], +[ac_checking= +ac_tree_checking= +ac_rtl_checking= +ac_rtlflag_checking= +ac_gc_checking= +ac_gc_always_collect= +ac_fold_checking= +case "${enableval}" in +yes) ac_checking=1 ; ac_tree_checking=1 ; ac_gc_checking=1 ; + ac_rtlflag_checking=1 ;; +no) ;; +*) IFS="${IFS= }"; ac_save_IFS="$IFS"; IFS="$IFS," + set fnord $enableval; shift + IFS="$ac_save_IFS" + for check + do + case $check in + misc) ac_checking=1 ;; + tree) ac_tree_checking=1 ;; + rtlflag) ac_rtlflag_checking=1 ;; + rtl) ac_rtl_checking=1 ;; + gc) ac_gc_checking=1 ;; + gcac) ac_gc_always_collect=1 ;; + fold) ac_fold_checking=1 ;; + valgrind) ac_checking_valgrind=1 ;; + *) AC_MSG_ERROR(unknown check category $check) ;; + esac + done + ;; +esac +], +# By default, disable all checks for release versions of GCC. +[ac_checking=; ac_tree_checking=; ac_gc_checking=; ac_rtlflag_checking=;]) +nocommon_flag="" +if test x$ac_checking != x ; then + AC_DEFINE(ENABLE_CHECKING, 1, +[Define if you want more run-time sanity checks. This one gets a grab + bag of miscellaneous but relatively cheap checks.]) + nocommon_flag=-fno-common +fi +AC_SUBST(nocommon_flag) +if test x$ac_tree_checking != x ; then + AC_DEFINE(ENABLE_TREE_CHECKING, 1, +[Define if you want all operations on trees (the basic data + structure of the front ends) to be checked for dynamic type safety + at runtime. This is moderately expensive.]) +fi +if test x$ac_rtl_checking != x ; then + AC_DEFINE(ENABLE_RTL_CHECKING, 1, +[Define if you want all operations on RTL (the basic data structure + of the optimizer and back end) to be checked for dynamic type safety + at runtime. This is quite expensive.]) +fi +if test x$ac_rtlflag_checking != x ; then + AC_DEFINE(ENABLE_RTL_FLAG_CHECKING, 1, +[Define if you want RTL flag accesses to be checked against the RTL + codes that are supported for each access macro. This is relatively + cheap.]) +fi +if test x$ac_gc_checking != x ; then + AC_DEFINE(ENABLE_GC_CHECKING, 1, +[Define if you want the garbage collector to do object poisoning and + other memory allocation checks. This is quite expensive.]) +fi +if test x$ac_gc_always_collect != x ; then + AC_DEFINE(ENABLE_GC_ALWAYS_COLLECT, 1, +[Define if you want the garbage collector to operate in maximally + paranoid mode, validating the entire heap and collecting garbage at + every opportunity. This is extremely expensive.]) +fi +if test x$ac_fold_checking != x ; then + AC_DEFINE(ENABLE_FOLD_CHECKING, 1, +[Define if you want fold checked that it never destructs its argument. + This is quite expensive.]) +fi +valgrind_path_defines= +valgrind_command= + +dnl # This check AC_REQUIREs various stuff, so it *must not* be inside +dnl # an if statement. This was the source of very frustrating bugs +dnl # in converting to autoconf 2.5x! +AC_CHECK_HEADER(valgrind.h, have_valgrind_h=yes, have_valgrind_h=no) + +if test x$ac_checking_valgrind != x ; then + # It is certainly possible that there's valgrind but no valgrind.h. + # GCC relies on making annotations so we must have both. + AC_MSG_CHECKING(for VALGRIND_DISCARD in <valgrind/memcheck.h>) + AC_TRY_CPP( + [#include <valgrind/memcheck.h> +#ifndef VALGRIND_DISCARD +#error VALGRIND_DISCARD not defined +#endif], + [gcc_cv_header_valgrind_memcheck_h=yes], + [gcc_cv_header_valgrind_memcheck_h=no]) + AC_MSG_RESULT($gcc_cv_header_valgrind_memcheck_h) + AC_MSG_CHECKING(for VALGRIND_DISCARD in <memcheck.h>) + AC_TRY_CPP( + [#include <memcheck.h> +#ifndef VALGRIND_DISCARD +#error VALGRIND_DISCARD not defined +#endif], + [gcc_cv_header_memcheck_h=yes], + gcc_cv_header_memcheck_h=no) + AC_MSG_RESULT($gcc_cv_header_memcheck_h) + AM_PATH_PROG_WITH_TEST(valgrind_path, valgrind, + [$ac_dir/$ac_word --version | grep valgrind- >/dev/null 2>&1]) + if test "x$valgrind_path" = "x" \ + || (test $have_valgrind_h = no \ + && test $gcc_cv_header_memcheck_h = no \ + && test $gcc_cv_header_valgrind_memcheck_h = no); then + AC_MSG_ERROR([*** Can't find both valgrind and valgrind/memcheck.h, memcheck.h or valgrind.h]) + fi + valgrind_path_defines=-DVALGRIND_PATH='\"'$valgrind_path'\"' + valgrind_command="$valgrind_path -q" + AC_DEFINE(ENABLE_VALGRIND_CHECKING, 1, +[Define if you want to run subprograms and generated programs + through valgrind (a memory checker). This is extremely expensive.]) + if test $gcc_cv_header_valgrind_memcheck_h = yes; then + AC_DEFINE(HAVE_VALGRIND_MEMCHECK_H, 1, + [Define if valgrind's valgrind/memcheck.h header is installed.]) + fi + if test $gcc_cv_header_memcheck_h = yes; then + AC_DEFINE(HAVE_MEMCHECK_H, 1, + [Define if valgrind's memcheck.h header is installed.]) + fi +fi +AC_SUBST(valgrind_path_defines) +AC_SUBST(valgrind_command) + +# Enable code coverage collection +AC_ARG_ENABLE(coverage, +[ --enable-coverage[=LEVEL] + enable compiler\'s code coverage collection. + Use to measure compiler performance and locate + unused parts of the compiler. With LEVEL, specify + optimization. Values are opt, noopt, + default is noopt], +[case "${enableval}" in +yes|noopt) + coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O0" + ;; +opt) + coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O2" + ;; +*) + AC_MSG_ERROR(unknown coverage setting $enableval) + ;; +esac], +[coverage_flags=""]) +AC_SUBST(coverage_flags) + +AC_ARG_ENABLE(gather-detailed-mem-stats, +[ --enable-gather-detailed-mem-stats enable detailed memory allocation stats gathering], [], +[enable_gather_detailed_mem_stats=no]) +if test x$enable_gather_detailed_mem_stats = xyes ; then + AC_DEFINE(GATHER_STATISTICS, 1, + [Define to enable detailed memory allocation stats gathering.]) +fi + +# ------------------------------- +# Miscenalleous configure options +# ------------------------------- + +# With stabs +AC_ARG_WITH(stabs, +[ --with-stabs arrange to use stabs instead of host debug format], +stabs="$with_stabs", +stabs=no) + +# Determine whether or not multilibs are enabled. +AC_ARG_ENABLE(multilib, +[ --enable-multilib enable library support for multiple ABIs], +[], [enable_multilib=yes]) +AC_SUBST(enable_multilib) + +# Enable __cxa_atexit for C++. +AC_ARG_ENABLE(__cxa_atexit, +[ --enable-__cxa_atexit enable __cxa_atexit for C++], +[], []) + +# Enable threads +# Pass with no value to take the default +# Pass with a value to specify a thread package +AC_ARG_ENABLE(threads, +[ --enable-threads enable thread usage for target GCC + --enable-threads=LIB use LIB thread package for target GCC],, +enable_threads='') +# Save in case it gets overwritten in config.gcc +enable_threads_flag=$enable_threads + +AC_ARG_ENABLE(objc-gc, +[ --enable-objc-gc enable the use of Boehm's garbage collector with + the GNU Objective-C runtime], +if test x$enable_objc_gc = xno; then + objc_boehm_gc='' +else + objc_boehm_gc=1 +fi, +objc_boehm_gc='') + +AC_ARG_WITH(dwarf2, +[ --with-dwarf2 force the default debug format to be DWARF 2], +dwarf2="$with_dwarf2", +dwarf2=no) + +AC_ARG_ENABLE(shared, +[ --disable-shared don't provide a shared libgcc], +[ + case $enable_shared in + yes | no) ;; + *) + enable_shared=no + IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS="${IFS}:," + for pkg in $enableval; do + if test "X$pkg" = "Xgcc" || test "X$pkg" = "Xlibgcc"; then + enable_shared=yes + fi + done + IFS="$ac_save_ifs" + ;; + esac +], [enable_shared=yes]) +AC_SUBST(enable_shared) + +AC_ARG_WITH(sysroot, +[ --with-sysroot[=DIR] Search for usr/lib, usr/include, et al, within DIR.], +[ + case ${with_sysroot} in + yes) TARGET_SYSTEM_ROOT='${exec_prefix}/${target_noncanonical}/sys-root' ;; + *) TARGET_SYSTEM_ROOT=$with_sysroot ;; + esac + + TARGET_SYSTEM_ROOT_DEFINE='-DTARGET_SYSTEM_ROOT=\"$(TARGET_SYSTEM_ROOT)\"' + CROSS_SYSTEM_HEADER_DIR='$(TARGET_SYSTEM_ROOT)$(NATIVE_SYSTEM_HEADER_DIR)' + + if test "x$exec_prefix" = xNONE; then + if test "x$prefix" = xNONE; then + test_prefix=/usr/local + else + test_prefix=$prefix + fi + else + test_prefix=$exec_prefix + fi + case ${TARGET_SYSTEM_ROOT} in + "${test_prefix}"|"${test_prefix}/"*|\ + '${exec_prefix}'|'${exec_prefix}/'*) + t="$TARGET_SYSTEM_ROOT_DEFINE -DTARGET_SYSTEM_ROOT_RELOCATABLE" + TARGET_SYSTEM_ROOT_DEFINE="$t" + ;; + esac +], [ + TARGET_SYSTEM_ROOT= + TARGET_SYSTEM_ROOT_DEFINE= + CROSS_SYSTEM_HEADER_DIR='$(gcc_tooldir)/sys-include' +]) +AC_SUBST(TARGET_SYSTEM_ROOT) +AC_SUBST(TARGET_SYSTEM_ROOT_DEFINE) +AC_SUBST(CROSS_SYSTEM_HEADER_DIR) + +# Build with intermodule optimisations +AC_ARG_ENABLE(intermodule, +[ --enable-intermodule build the compiler in one step], +[case ${enable_intermodule} in + yes) onestep="-onestep";; + *) onestep="";; +esac], +[onestep=""]) +AC_SUBST(onestep) + +# ------------------------- +# Checks for other programs +# ------------------------- + +AC_PROG_MAKE_SET + +# Find some useful tools +AC_PROG_AWK +# We need awk to run opts.sh (to create options.c and options.h). +# Bail out if it's missing. +case ${AWK} in + "") AC_MSG_ERROR([can't build without awk, bailing out]) ;; +esac + +gcc_AC_PROG_LN +gcc_AC_PROG_LN_S +AC_PROG_RANLIB +gcc_AC_PROG_INSTALL + +# See if cmp has --ignore-initial. +gcc_AC_PROG_CMP_IGNORE_INITIAL + +# See if we have the mktemp command. +AC_CHECK_PROG(have_mktemp_command, mktemp, yes, no) + +# Do we have a single-tree copy of texinfo? +if test -f $srcdir/../texinfo/Makefile.in; then + MAKEINFO='$(objdir)/../texinfo/makeinfo/makeinfo' + gcc_cv_prog_makeinfo_modern=yes + AC_MSG_RESULT([Using makeinfo from the unified source tree.]) +else + # See if makeinfo has been installed and is modern enough + # that we can use it. + gcc_AC_CHECK_PROG_VER(MAKEINFO, makeinfo, --version, + [GNU texinfo.* \([0-9][0-9.]*\)], + [4.[2-9]*]) +fi + +if test $gcc_cv_prog_makeinfo_modern = no; then + AC_MSG_WARN([ +*** Makeinfo is missing or too old. +*** Info documentation will not be built.]) + BUILD_INFO= +else + BUILD_INFO=info AC_SUBST(BUILD_INFO) +fi + +# Is pod2man recent enough to regenerate manpages? +AC_MSG_CHECKING([for recent Pod::Man]) +if (perl -e 'use 1.10 Pod::Man') >/dev/null 2>&1; then + AC_MSG_RESULT(yes) + GENERATED_MANPAGES=generated-manpages AC_SUBST(GENERATED_MANPAGES) +else + AC_MSG_RESULT(no) + GENERATED_MANPAGES= +fi + +# How about lex? +dnl Don't use AC_PROG_LEX; we insist on flex. +dnl LEXLIB is not useful in gcc. +if test -f $srcdir/../flex/skel.c; then + FLEX='$(objdir)/../flex/flex' +else + AC_CHECK_PROG(FLEX, flex, flex, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing flex) +fi + +# Bison? +# The -L switch is so bison can find its skeleton file. +if test -f $srcdir/../bison/bison.simple; then + BISON='$(objdir)/../bison/bison -L $(srcdir)/../bison/' +else + AC_CHECK_PROG(BISON, bison, bison, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing bison) +fi + +# -------------------- +# Checks for C headers +# -------------------- + +AC_MSG_CHECKING(for GNU C library) +AC_CACHE_VAL(gcc_cv_glibc, +[AC_TRY_COMPILE( + [#include <features.h>],[ +#if ! (defined __GLIBC__ || defined __GNU_LIBRARY__) +#error Not a GNU C library system +#endif], + [gcc_cv_glibc=yes], + gcc_cv_glibc=no)]) +AC_MSG_RESULT($gcc_cv_glibc) +if test $gcc_cv_glibc = yes; then + AC_DEFINE(_GNU_SOURCE, 1, [Always define this when using the GNU C Library]) +fi + +# Need to reject headers which give warnings, so that the -Werror bootstrap +# works later. *sigh* This needs to come before all header checks. +AC_PROG_CPP_WERROR + +AC_HEADER_STDC +AC_HEADER_TIME +gcc_AC_HEADER_STDBOOL +gcc_AC_HEADER_STRING +AC_HEADER_SYS_WAIT +AC_CHECK_HEADERS(limits.h stddef.h string.h strings.h stdlib.h time.h \ + fcntl.h unistd.h sys/file.h sys/time.h sys/mman.h \ + sys/resource.h sys/param.h sys/times.h sys/stat.h \ + direct.h malloc.h langinfo.h ldfcn.h locale.h wchar.h) + +# Check for thread headers. +AC_CHECK_HEADER(thread.h, [have_thread_h=yes], [have_thread_h=]) +AC_CHECK_HEADER(pthread.h, [have_pthread_h=yes], [have_pthread_h=]) + +# These tests can't be done till we know if we have limits.h. +gcc_AC_C_CHAR_BIT +AC_C_BIGENDIAN_CROSS + +# -------- +# UNSORTED +# -------- + +# Stage specific cflags for build. +stage1_cflags= +case $build in +vax-*-*) + if test x$GCC = xyes + then + stage1_cflags="-Wa,-J" + else + stage1_cflags="-J" + fi + ;; +powerpc-*-darwin*) + # The spiffy cpp-precomp chokes on some legitimate constructs in GCC + # sources; use -no-cpp-precomp to get to GNU cpp. + # Apple's GCC has bugs in designated initializer handling, so disable + # that too. + stage1_cflags="-no-cpp-precomp -DHAVE_DESIGNATED_INITIALIZERS=0" + ;; +esac +AC_SUBST(stage1_cflags) + +# These libraries may be used by collect2. +# We may need a special search path to get them linked. +AC_CACHE_CHECK(for collect2 libraries, gcc_cv_collect2_libs, +[save_LIBS="$LIBS" +for libs in '' -lld -lmld \ + '-L/usr/lib/cmplrs/cc2.11 -lmld' \ + '-L/usr/lib/cmplrs/cc3.11 -lmld' +do + LIBS="$libs" + AC_TRY_LINK_FUNC(ldopen, + [gcc_cv_collect2_libs="$libs"; break]) +done +LIBS="$save_LIBS" +test -z "$gcc_cv_collect2_libs" && gcc_cv_collect2_libs='none required']) +case $gcc_cv_collect2_libs in + "none required") ;; + *) COLLECT2_LIBS=$gcc_cv_collect2_libs ;; +esac +AC_SUBST(COLLECT2_LIBS) + +# When building Ada code on Alpha, we need exc_resume which is usually in +# -lexc. So test for it. +save_LIBS="$LIBS" +LIBS= +AC_SEARCH_LIBS(exc_resume, exc) +GNAT_LIBEXC="$LIBS" +LIBS="$save_LIBS" +AC_SUBST(GNAT_LIBEXC) + +# Some systems put ldexp and frexp in libm instead of libc; assume +# they're both in the same place. jcf-dump needs them. +save_LIBS="$LIBS" +LIBS= +AC_SEARCH_LIBS(ldexp, m) +LDEXP_LIB="$LIBS" +LIBS="$save_LIBS" +AC_SUBST(LDEXP_LIB) + +# Use <inttypes.h> only if it exists, +# doesn't clash with <sys/types.h>, and declares intmax_t. +AC_MSG_CHECKING(for inttypes.h) +AC_CACHE_VAL(gcc_cv_header_inttypes_h, +[AC_TRY_COMPILE( + [#include <sys/types.h> +#include <inttypes.h>], + [intmax_t i = -1;], + [gcc_cv_header_inttypes_h=yes], + gcc_cv_header_inttypes_h=no)]) +AC_MSG_RESULT($gcc_cv_header_inttypes_h) +if test $gcc_cv_header_inttypes_h = yes; then + AC_DEFINE(HAVE_INTTYPES_H, 1, + [Define if you have a working <inttypes.h> header file.]) +fi + +dnl Disabled until we have a complete test for buggy enum bitfields. +dnl gcc_AC_C_ENUM_BF_UNSIGNED + +AC_CHECK_FUNCS(times clock dup2 kill getrlimit setrlimit atoll atoq \ + sysconf strsignal putc_unlocked fputc_unlocked fputs_unlocked \ + fwrite_unlocked fprintf_unlocked getrusage nl_langinfo \ + scandir alphasort gettimeofday mbstowcs wcswidth mmap mincore \ + setlocale) + +if test x$ac_cv_func_mbstowcs = xyes; then + AC_CACHE_CHECK(whether mbstowcs works, gcc_cv_func_mbstowcs_works, +[ AC_TRY_RUN([#include <stdlib.h> +int main() +{ + mbstowcs(0, "", 0); + return 0; +}], + gcc_cv_func_mbstowcs_works=yes, + gcc_cv_func_mbstowcs_works=no, + gcc_cv_func_mbstowcs_works=yes)]) + if test x$gcc_cv_func_mbstowcs_works = xyes; then + AC_DEFINE(HAVE_WORKING_MBSTOWCS, 1, + [Define this macro if mbstowcs does not crash when its + first argument is NULL.]) + fi +fi + +AC_CHECK_TYPE(ssize_t, int) + +# Try to determine the array type of the second argument of getgroups +# for the target system (int or gid_t). +AC_TYPE_GETGROUPS +if test "${target}" = "${build}"; then + TARGET_GETGROUPS_T=$ac_cv_type_getgroups +else + case "${target}" in + # This condition may need some tweaking. It should include all + # targets where the array type of the second argument of getgroups + # is int and the type of gid_t is not equivalent to int. + *-*-sunos* | *-*-ultrix*) + TARGET_GETGROUPS_T=int + ;; + *) + TARGET_GETGROUPS_T=gid_t + ;; + esac +fi +AC_SUBST(TARGET_GETGROUPS_T) + +gcc_AC_FUNC_PRINTF_PTR +gcc_AC_FUNC_MMAP_BLACKLIST + +case "${host}" in +*-*-*vms*) + # Under VMS, vfork works very differently than on Unix. The standard test + # won't work, and it isn't easily adaptable. It makes more sense to + # just force it. + ac_cv_func_vfork_works=yes + ;; +esac +AC_FUNC_VFORK + +AM_ICONV +# Until we have in-tree GNU iconv: +LIBICONV_DEP= +AC_SUBST(LIBICONV_DEP) + +AM_LC_MESSAGES + +# We will need to find libiberty.h and ansidecl.h +saved_CFLAGS="$CFLAGS" +CFLAGS="$CFLAGS -I${srcdir} -I${srcdir}/../include" +gcc_AC_CHECK_DECLS(getenv atol sbrk abort atof getcwd getwd \ + strsignal putc_unlocked fputs_unlocked fwrite_unlocked \ + fprintf_unlocked strstr errno snprintf vasprintf \ + malloc realloc calloc free basename getopt clock, , ,[ +#include "ansidecl.h" +#include "system.h"]) + +gcc_AC_CHECK_DECLS(getrlimit setrlimit getrusage, , ,[ +#include "ansidecl.h" +#include "system.h" +#ifdef HAVE_SYS_RESOURCE_H +#include <sys/resource.h> +#endif +]) + +AC_TRY_COMPILE([ +#include "ansidecl.h" +#include "system.h" +#ifdef HAVE_SYS_RESOURCE_H +#include <sys/resource.h> +#endif +],[rlim_t l = 0;],,[AC_DEFINE([rlim_t],[long], +[Define to \`long' if <sys/resource.h> doesn't define.])]) + +gcc_AC_CHECK_DECLS(ldgetname, , ,[ +#include "ansidecl.h" +#include "system.h" +#ifdef HAVE_LDFCN_H +#include <ldfcn.h> +#endif +]) + +gcc_AC_CHECK_DECLS(times, , ,[ +#include "ansidecl.h" +#include "system.h" +#ifdef HAVE_SYS_TIMES_H +#include <sys/times.h> +#endif +]) + +# More time-related stuff. +AC_CACHE_CHECK(for struct tms, ac_cv_struct_tms, [ +AC_TRY_COMPILE([ +#include "ansidecl.h" +#include "system.h" +#ifdef HAVE_SYS_TIMES_H +#include <sys/times.h> +#endif +], [struct tms tms;], ac_cv_struct_tms=yes, ac_cv_struct_tms=no)]) +if test $ac_cv_struct_tms = yes; then + AC_DEFINE(HAVE_STRUCT_TMS, 1, + [Define if <sys/times.h> defines struct tms.]) +fi + +# use gcc_cv_* here because this doesn't match the behavior of AC_CHECK_TYPE. +# revisit after autoconf 2.50. +AC_CACHE_CHECK(for clock_t, gcc_cv_type_clock_t, [ +AC_TRY_COMPILE([ +#include "ansidecl.h" +#include "system.h" +], [clock_t x;], gcc_cv_type_clock_t=yes, gcc_cv_type_clock_t=no)]) +if test $gcc_cv_type_clock_t = yes; then + AC_DEFINE(HAVE_CLOCK_T, 1, + [Define if <time.h> defines clock_t.]) +fi + +AC_CACHE_CHECK(for uchar, gcc_cv_type_uchar, +[AC_TRY_COMPILE([ +#include "ansidecl.h" +#include "system.h" +], +[if ((uchar *)0) return 0; + if (sizeof(uchar)) return 0;], +ac_cv_type_uchar=yes, ac_cv_type_uchar=no)]) +if test $ac_cv_type_uchar = yes; then + AC_DEFINE(HAVE_UCHAR, 1, + [Define if <sys/types.h> defines \`uchar'.]) +fi + +# Restore CFLAGS from before the gcc_AC_NEED_DECLARATIONS tests. +CFLAGS="$saved_CFLAGS" + +gcc_AC_INITFINI_ARRAY + +# mkdir takes a single argument on some systems. +gcc_AC_FUNC_MKDIR_TAKES_ONE_ARG + +# File extensions +manext='.1' +objext='.o' +AC_SUBST(manext) +AC_SUBST(objext) + +# With Setjmp/Longjmp based exception handling. +AC_ARG_ENABLE(sjlj-exceptions, +[ --enable-sjlj-exceptions + arrange to use setjmp/longjmp exception handling], +[sjlj=`if test $enableval = yes; then echo 1; else echo 0; fi` +AC_DEFINE_UNQUOTED(CONFIG_SJLJ_EXCEPTIONS, $sjlj, + [Define 0/1 to force the choice for exception handling model.])]) + +if test x$host = x$target; then + AC_CHECK_LIB(unwind, main, use_libunwind_default=yes, use_libunwind_default=no) +else + use_libunwind_default=no +fi +# Use libunwind based exception handling. +AC_ARG_ENABLE(libunwind-exceptions, +[ --enable-libunwind-exceptions force use libunwind for exceptions], +use_libunwind_exceptions=$enableval, +use_libunwind_exceptions=$use_libunwind_default) +if test x"$use_libunwind_exceptions" = xyes; then + AC_DEFINE(USE_LIBUNWIND_EXCEPTIONS, 1, + [Define if gcc should use -lunwind.]) +fi + +# -------------------------------------------------------- +# Build, host, and target specific configuration fragments +# -------------------------------------------------------- + +# Collect build-machine-specific information. +. ${srcdir}/config.build + +# Collect host-machine-specific information. +. ${srcdir}/config.host + +target_gtfiles= + +# Collect target-machine-specific information. +. ${srcdir}/config.gcc + +extra_objs="${host_extra_objs} ${extra_objs}" +extra_gcc_objs="${host_extra_gcc_objs} ${extra_gcc_objs}" + +# Default the target-machine variables that were not explicitly set. +if test x"$tm_file" = x +then tm_file=$cpu_type/$cpu_type.h; fi + +if test x"$extra_headers" = x +then extra_headers=; fi + +if test x$md_file = x +then md_file=$cpu_type/$cpu_type.md; fi + +if test x$out_file = x +then out_file=$cpu_type/$cpu_type.c; fi + +if test x"$tmake_file" = x +then tmake_file=$cpu_type/t-$cpu_type +fi + +if test x"$dwarf2" = xyes +then tm_file="$tm_file tm-dwarf2.h" +fi + +# Say what files are being used for the output code and MD file. +echo "Using \`$srcdir/config/$out_file' for machine-specific logic." +echo "Using \`$srcdir/config/$md_file' as machine description file." + +# If any of the xm_file variables contain nonexistent files, warn +# about them and drop them. + +bx= +for x in $build_xm_file; do + if test -f $srcdir/config/$x + then bx="$bx $x" + else AC_MSG_WARN($srcdir/config/$x does not exist.) + fi +done +build_xm_file="$bx" + +hx= +for x in $host_xm_file; do + if test -f $srcdir/config/$x + then hx="$hx $x" + else AC_MSG_WARN($srcdir/config/$x does not exist.) + fi +done +host_xm_file="$hx" + +tx= +for x in $xm_file; do + if test -f $srcdir/config/$x + then tx="$tx $x" + else AC_MSG_WARN($srcdir/config/$x does not exist.) + fi +done +xm_file="$tx" + +count=a +for f in $tm_file; do + count=${count}x +done +if test $count = ax; then + echo "Using \`$srcdir/config/$tm_file' as target machine macro file." +else + echo "Using the following target machine macro files:" + for f in $tm_file; do + echo " $srcdir/config/$f" + done +fi + +if test x$need_64bit_hwint = xyes; then + AC_DEFINE(NEED_64BIT_HOST_WIDE_INT, 1, +[Define to 1 if HOST_WIDE_INT must be 64 bits wide (see hwint.h).]) +fi + +count=a +for f in $host_xm_file; do + count=${count}x +done +if test $count = a; then + : +elif test $count = ax; then + echo "Using \`$srcdir/config/$host_xm_file' as host machine macro file." +else + echo "Using the following host machine macro files:" + for f in $host_xm_file; do + echo " $srcdir/config/$f" + done +fi +echo "Using ${out_host_hook_obj} for host machine hooks." + +if test "$host_xm_file" != "$build_xm_file"; then + count=a + for f in $build_xm_file; do + count=${count}x + done + if test $count = a; then + : + elif test $count = ax; then + echo "Using \`$srcdir/config/$build_xm_file' as build machine macro file." + else + echo "Using the following build machine macro files:" + for f in $build_xm_file; do + echo " $srcdir/config/$f" + done + fi +fi + +# Check if a valid thread package +case ${enable_threads_flag} in + "" | no) + # No threads + target_thread_file='single' + ;; + yes) + # default + target_thread_file='single' + ;; + aix | dce | gnat | irix | posix | rtems | \ + single | solaris | vxworks | win32 ) + target_thread_file=${enable_threads_flag} + ;; + *) + echo "${enable_threads_flag} is an unknown thread package" 1>&2 + exit 1 + ;; +esac + +if test x${thread_file} = x; then + # No thread file set by target-specific clauses in config.gcc, + # so use file chosen by default logic above + thread_file=${target_thread_file} +fi + +if test x$enable___cxa_atexit = xyes || \ + test x$enable___cxa_atexit = x -a x$default_use_cxa_atexit = xyes; then + AC_CHECK_FUNC(__cxa_atexit, + [AC_DEFINE(DEFAULT_USE_CXA_ATEXIT, 1, + [Define if you want to use __cxa_atexit, rather than atexit, to + register C++ destructors for local statics and global objects. + This is essential for fully standards-compliant handling of + destructors, but requires __cxa_atexit in libc.])], + echo "__cxa_atexit can't be enabled on this target") +fi + +# Look for a file containing extra machine modes. +if test -n "$extra_modes" && test -f $srcdir/config/$extra_modes; then + extra_modes_file='$(srcdir)'/config/${extra_modes} + AC_SUBST(extra_modes_file) + AC_DEFINE_UNQUOTED(EXTRA_MODES_FILE, "config/$extra_modes", + [Define to the name of a file containing a list of extra machine modes + for this architecture.]) +fi + +# auto-host.h is the file containing items generated by autoconf and is +# the first file included by config.h. +# If host=build, it is correct to have bconfig include auto-host.h +# as well. If host!=build, we are in error and need to do more +# work to find out the build config parameters. +if test x$host = x$build +then + build_auto=auto-host.h + FORBUILD=.. +else + # We create a subdir, then run autoconf in the subdir. + # To prevent recursion we set host and build for the new + # invocation of configure to the build for this invocation + # of configure. + tempdir=build.$$ + rm -rf $tempdir + mkdir $tempdir + cd $tempdir + case ${srcdir} in + /* | [A-Za-z]:[\\/]* ) realsrcdir=${srcdir};; + *) realsrcdir=../${srcdir};; + esac + saved_CFLAGS="${CFLAGS}" + CC="${CC_FOR_BUILD}" CFLAGS="${CFLAGS_FOR_BUILD}" \ + ${realsrcdir}/configure \ + --target=$target_alias --host=$build_alias --build=$build_alias + CFLAGS="${saved_CFLAGS}" + + # We just finished tests for the build machine, so rename + # the file auto-build.h in the gcc directory. + mv auto-host.h ../auto-build.h + cd .. + rm -rf $tempdir + build_auto=auto-build.h + FORBUILD=../${build_subdir} +fi +AC_SUBST(FORBUILD) + +tm_file="${tm_file} defaults.h" +tm_p_file="${tm_p_file} tm-preds.h" +host_xm_file="auto-host.h ansidecl.h ${host_xm_file}" +build_xm_file="${build_auto} ansidecl.h ${build_xm_file}" +# We don't want ansidecl.h in target files, write code there in ISO/GNU C. +# put this back in temporarily. +xm_file="ansidecl.h ${xm_file}" + +# -------- +# UNSORTED +# -------- + +# Get the version trigger filename from the toplevel +if test "${with_gcc_version_trigger+set}" = set; then + gcc_version_trigger=$with_gcc_version_trigger +else + gcc_version_trigger=${srcdir}/version.c +fi +changequote(,)dnl +gcc_version_full=`grep version_string ${gcc_version_trigger} | sed -e 's/.*"\([^"]*\)".*/\1/'` +gcc_version=`echo ${gcc_version_full} | sed -e 's/\([^ ]*\) .*/\1/'` + +# Compile in configure arguments. +if test -f configargs.h ; then + # Being re-configured. + gcc_config_arguments=`grep configuration_arguments configargs.h | sed -e 's/.*"\([^"]*\)".*/\1/'` + gcc_config_arguments="$gcc_config_arguments : (reconfigured) $TOPLEVEL_CONFIGURE_ARGUMENTS" +else + gcc_config_arguments="$TOPLEVEL_CONFIGURE_ARGUMENTS" +fi + +# Double all backslashes and backslash all quotes to turn +# gcc_config_arguments into a C string. +sed -e 's/\\/\\\\/g; s/"/\\"/g' <<EOF >conftest.out +$gcc_config_arguments +EOF +gcc_config_arguments_str=`cat conftest.out` +rm -f conftest.out + +cat > configargs.h <<EOF +/* Generated automatically. */ +static const char configuration_arguments[] = "$gcc_config_arguments_str"; +static const char thread_model[] = "$thread_file"; + +static const struct { + const char *name, *value; +} configure_default_options[] = $configure_default_options; +EOF +changequote([,])dnl + +# Internationalization +PACKAGE=gcc +VERSION="$gcc_version" +AC_SUBST(PACKAGE) +AC_SUBST(VERSION) + +ZW_GNU_GETTEXT_SISTER_DIR + +# If LIBINTL contains LIBICONV, then clear LIBICONV so we don't get +# -liconv on the link line twice. +case "$LIBINTL" in *$LIBICONV*) + LIBICONV= ;; +esac + +# Windows32 Registry support for specifying GCC installation paths. +AC_ARG_ENABLE(win32-registry, +[ --disable-win32-registry + disable lookup of installation paths in the + Registry on Windows hosts + --enable-win32-registry enable registry lookup (default) + --enable-win32-registry=KEY + use KEY instead of GCC version as the last portion + of the registry key],,) +case $host_os in + win32 | pe | cygwin* | mingw32* | uwin*) +AC_MSG_CHECKING(whether windows registry support is requested) +if test "x$enable_win32_registry" != xno; then + AC_DEFINE(ENABLE_WIN32_REGISTRY, 1, +[Define to 1 if installation paths should be looked up in Windows32 + Registry. Ignored on non windows32 hosts.]) + AC_MSG_RESULT(yes) + AC_SEARCH_LIBS(RegOpenKeyExA, advapi32) +else + AC_MSG_RESULT(no) +fi + +# Check if user specified a different registry key. +case "x${enable_win32_registry}" in +x | xyes) + # default. + gcc_cv_win32_registry_key="$VERSION" + ;; +xno) + # no registry lookup. + gcc_cv_win32_registry_key='' + ;; +*) + # user-specified key. + gcc_cv_win32_registry_key="$enable_win32_registry" + ;; +esac + +if test "x$enable_win32_registry" != xno; then + AC_MSG_CHECKING(registry key on windows hosts) + AC_DEFINE_UNQUOTED(WIN32_REGISTRY_KEY, "$gcc_cv_win32_registry_key", + [Define to be the last portion of registry key on windows hosts.]) + AC_MSG_RESULT($gcc_cv_win32_registry_key) +fi +;; +esac + +# Get an absolute path to the GCC top-level source directory +holddir=`${PWDCMD-pwd}` +cd $srcdir +topdir=`${PWDCMD-pwd}` +cd $holddir + +# Conditionalize the makefile for this host machine. +xmake_file= +for f in ${host_xmake_file} +do + if test -f ${srcdir}/config/$f + then + xmake_file="${xmake_file} \$(srcdir)/config/$f" + fi +done + +# Conditionalize the makefile for this target machine. +tmake_file_= +for f in ${tmake_file} +do + if test -f ${srcdir}/config/$f + then + tmake_file_="${tmake_file_} \$(srcdir)/config/$f" + fi +done +tmake_file="${tmake_file_}" + +symbolic_link='ln -s' + +# If the host doesn't support symlinks, modify CC in +# FLAGS_TO_PASS so CC="stage1/xgcc -Bstage1/" works. +# Otherwise, we can use "CC=$(CC)". +rm -f symtest.tem +if $symbolic_link $srcdir/gcc.c symtest.tem 2>/dev/null +then + cc_set_by_configure="\$(CC)" + quoted_cc_set_by_configure="\$(CC)" + stage_prefix_set_by_configure="\$(STAGE_PREFIX)" + quoted_stage_prefix_set_by_configure="\$(STAGE_PREFIX)" +else + rm -f symtest.tem + if cp -p $srcdir/gcc.c symtest.tem 2>/dev/null + then + symbolic_link="cp -p" + else + symbolic_link="cp" + fi + cc_set_by_configure="\`case '\$(CC)' in stage*) echo '\$(CC)' | sed -e 's|stage|../stage|g';; *) echo '\$(CC)';; esac\`" + quoted_cc_set_by_configure="\\\`case '\\\$(CC)' in stage*) echo '\\\$(CC)' | sed -e 's|stage|../stage|g';; *) echo '\\\$(CC)';; esac\\\`" + stage_prefix_set_by_configure="\`case '\$(STAGE_PREFIX)' in stage*) echo '\$(STAGE_PREFIX)' | sed -e 's|stage|../stage|g';; *) echo '\$(STAGE_PREFIX)';; esac\`" + quoted_stage_prefix_set_by_configure="\\\`case '\\\$(STAGE_PREFIX)' in stage*) echo '\\\$(STAGE_PREFIX)' | sed -e 's|stage|../stage|g';; *) echo '\\\$(STAGE_PREFIX)';; esac\\\`" +fi +rm -f symtest.tem + +out_object_file=`basename $out_file .c`.o + +tm_file_list= +tm_include_list= +for f in $tm_file; do + case $f in + defaults.h ) + tm_file_list="${tm_file_list} \$(srcdir)/$f" + tm_include_list="${tm_include_list} $f" + ;; + * ) + tm_file_list="${tm_file_list} \$(srcdir)/config/$f" + tm_include_list="${tm_include_list} config/$f" + ;; + esac +done + +tm_p_file_list= +tm_p_include_list= +for f in $tm_p_file; do + case $f in + tm-preds.h ) + tm_p_file_list="${tm_p_file_list} $f" + tm_p_include_list="${tm_p_include_list} $f" + ;; + * ) + tm_p_file_list="${tm_p_file_list} \$(srcdir)/config/$f" + tm_p_include_list="${tm_p_include_list} config/$f" + esac +done + +xm_file_list= +xm_include_list= +for f in $xm_file; do + case $f in + ansidecl.h ) + xm_file_list="${xm_file_list} \$(srcdir)/../include/$f" + xm_include_list="${xm_include_list} $f" + ;; + auto-host.h ) + xm_file_list="${xm_file_list} $f" + xm_include_list="${xm_include_list} $f" + ;; + * ) + xm_file_list="${xm_file_list} \$(srcdir)/config/$f" + xm_include_list="${xm_include_list} config/$f" + ;; + esac +done + +host_xm_file_list= +host_xm_include_list= +for f in $host_xm_file; do + case $f in + ansidecl.h ) + host_xm_file_list="${host_xm_file_list} \$(srcdir)/../include/$f" + host_xm_include_list="${host_xm_include_list} $f" + ;; + auto-host.h ) + host_xm_file_list="${host_xm_file_list} $f" + host_xm_include_list="${host_xm_include_list} $f" + ;; + * ) + host_xm_file_list="${host_xm_file_list} \$(srcdir)/config/$f" + host_xm_include_list="${host_xm_include_list} config/$f" + ;; + esac +done + +build_xm_file_list= +for f in $build_xm_file; do + case $f in + ansidecl.h ) + build_xm_file_list="${build_xm_file_list} \$(srcdir)/../include/$f" + build_xm_include_list="${build_xm_include_list} $f" + ;; + auto-build.h | auto-host.h ) + build_xm_file_list="${build_xm_file_list} $f" + build_xm_include_list="${build_xm_include_list} $f" + ;; + * ) + build_xm_file_list="${build_xm_file_list} \$(srcdir)/config/$f" + build_xm_include_list="${build_xm_include_list} config/$f" + ;; + esac +done + +# Define macro CROSS_COMPILE in compilation if this is a cross-compiler. +# Also use all.cross instead of all.internal and adjust SYSTEM_HEADER_DIR. +CROSS= AC_SUBST(CROSS) +ALL=all.internal AC_SUBST(ALL) +SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)' AC_SUBST(SYSTEM_HEADER_DIR) +if test x$host != x$target +then + CROSS="-DCROSS_COMPILE" + ALL=all.cross + SYSTEM_HEADER_DIR='$(CROSS_SYSTEM_HEADER_DIR)' + case "$host","$target" in + # Darwin crosses can use the host system's libraries and headers, + # because of the fat library support. Of course, it must be the + # same version of Darwin on both sides. Allow the user to + # just say --target=foo-darwin without a version number to mean + # "the version on this system". + *-*-darwin*,*-*-darwin*) + hostos=`echo $host | sed 's/.*-darwin/darwin/'` + targetos=`echo $target | sed 's/.*-darwin/darwin/'` + if test $hostos = $targetos -o $targetos = darwin ; then + CROSS= + SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)' + with_headers=yes + fi + ;; + + i?86-*-*,x86_64-*-* \ + | powerpc*-*-*,powerpc64*-*-*) + CROSS="$CROSS -DNATIVE_CROSS" ;; + esac +elif test "x$TARGET_SYSTEM_ROOT" != x; then + # This is just $(TARGET_SYSTEM_ROOT)$(NATIVE_SYSTEM_HEADER_DIR) + SYSTEM_HEADER_DIR='$(CROSS_SYSTEM_HEADER_DIR)' +fi + +# If this is a cross-compiler that does not +# have its own set of headers then define +# inhibit_libc + +# If this is using newlib, without having the headers available now, +# then define inhibit_libc in LIBGCC2_CFLAGS. +# This prevents libgcc2 from containing any code which requires libc +# support. +inhibit_libc= +if { { test x$host != x$target && test "x$with_sysroot" = x ; } || + test x$with_newlib = xyes ; } && + { test "x$with_headers" = x || test "x$with_headers" = xno ; } ; then + inhibit_libc=-Dinhibit_libc +fi +AC_SUBST(inhibit_libc) + +# When building gcc with a cross-compiler, we need to adjust things so +# that the generator programs are still built with the native compiler. +# Also, we cannot run fixincludes or fix-header. + +# These are the normal (build=host) settings: +BUILD_PREFIX= AC_SUBST(BUILD_PREFIX) +BUILD_PREFIX_1=ignore- AC_SUBST(BUILD_PREFIX_1) +CC_FOR_BUILD='$(CC)' AC_SUBST(CC_FOR_BUILD) +BUILD_CFLAGS='$(ALL_CFLAGS)' AC_SUBST(BUILD_CFLAGS) + +STMP_FIXINC=stmp-fixinc AC_SUBST(STMP_FIXINC) + +# Possibly disable fixproto, on a per-target basis. +case ${use_fixproto} in + no) + STMP_FIXPROTO= + ;; + yes) + STMP_FIXPROTO=stmp-fixproto + ;; +esac +AC_SUBST(STMP_FIXPROTO) + +# And these apply if build != host, or we are generating coverage data +if test x$build != x$host || test "x$coverage_flags" != x +then + BUILD_PREFIX=build- + BUILD_PREFIX_1=build- + BUILD_CFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CFLAGS_FOR_BUILD)' + + if test "x$TARGET_SYSTEM_ROOT" = x; then + STMP_FIXINC= + STMP_FIXPROTO= + fi +fi + +# Expand extra_headers to include complete path. +# This substitutes for lots of t-* files. +extra_headers_list= +# Prepend $(srcdir)/config/${cpu_type}/ to every entry in extra_headers. +for file in ${extra_headers} ; do + extra_headers_list="${extra_headers_list} \$(srcdir)/config/${cpu_type}/${file}" +done + +# Add a definition of USE_COLLECT2 if system wants one. +case $use_collect2 in + no) use_collect2= ;; + "") ;; + *) + host_xm_defines="${host_xm_defines} USE_COLLECT2" + xm_defines="${xm_defines} USE_COLLECT2" + ;; +esac + +# Identify the assembler which will work hand-in-glove with the newly +# built GCC, so that we can examine its features. This is the assembler +# which will be driven by the driver program. +# +# If build != host, and we aren't building gas in-tree, we identify a +# build->target assembler and hope that it will have the same features +# as the host->target assembler we'll be using. +AC_MSG_CHECKING(what assembler to use) +in_tree_gas=no +gcc_cv_as= +gcc_cv_gas_major_version= +gcc_cv_gas_minor_version= +gcc_cv_as_gas_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gas +if test -x "$DEFAULT_ASSEMBLER"; then + gcc_cv_as="$DEFAULT_ASSEMBLER" +elif test -x "$AS"; then + gcc_cv_as="$AS" +elif test -x as$host_exeext; then + # Build using assembler in the current directory. + gcc_cv_as=./as$host_exeext +elif test -f $gcc_cv_as_gas_srcdir/configure.in \ + && test -f ../gas/Makefile; then + # Single tree build which includes gas. + in_tree_gas=yes + _gcc_COMPUTE_GAS_VERSION + rm -f as$host_exeext + $symbolic_link ../gas/as-new$host_exeext as$host_exeext 2>/dev/null + in_tree_gas_is_elf=no + if grep 'obj_format = elf' ../gas/Makefile > /dev/null \ + || (grep 'obj_format = multi' ../gas/Makefile \ + && grep 'extra_objects =.* obj-elf' ../gas/Makefile) > /dev/null + then + in_tree_gas_is_elf=yes + fi +fi + +if test "x$gcc_cv_as" = x; then + # Search the same directories that the installed compiler will + # search. Else we may find the wrong assembler and lose. If we + # do not find a suitable assembler binary, then try the user's + # path. + # + # Also note we have to check MD_EXEC_PREFIX before checking the + # user's path. Unfortunately, there is no good way to get at the + # value of MD_EXEC_PREFIX here. So we do a brute force search + # through all the known MD_EXEC_PREFIX values. Ugh. This needs + # to be fixed as part of the make/configure rewrite too. + + if test "x$exec_prefix" = xNONE; then + if test "x$prefix" = xNONE; then + test_prefix=/usr/local + else + test_prefix=$prefix + fi + else + test_prefix=$exec_prefix + fi + + # If the loop below does not find an assembler, then use whatever + # one we can find in the users's path. + # user's path. + if test "x$program_prefix" != xNONE; then + gcc_cv_as=${program_prefix}as$host_exeext + else + gcc_cv_as=`echo as | sed ${program_transform_name}`$host_exeext + fi + + test_dirs="$test_prefix/libexec/gcc/$target_noncanonical/$gcc_version \ + $test_prefix/libexec/gcc/$target_noncanonical \ + /usr/lib/gcc/$target_noncanonical/$gcc_version \ + /usr/lib/gcc/$target_noncanonical \ + $test_prefix/$target_noncanonical/bin/$target_noncanonical/$gcc_version \ + $test_prefix/$target_noncanonical/bin" + + if test x$host = x$target; then + test_dirs="$test_dirs \ + /usr/libexec \ + /usr/ccs/gcc \ + /usr/ccs/bin \ + /udk/usr/ccs/bin \ + /bsd43/usr/lib/cmplrs/cc \ + /usr/cross64/usr/bin \ + /usr/lib/cmplrs/cc \ + /sysv/usr/lib/cmplrs/cc \ + /svr4/usr/lib/cmplrs/cc \ + /usr/bin" + fi + + for dir in $test_dirs; do + if test -x $dir/as$host_exeext; then + gcc_cv_as=$dir/as$host_exeext + break; + fi + done +fi +case $in_tree_gas in + yes) + AC_MSG_RESULT("newly built gas") + ;; + no) + AC_MSG_RESULT($gcc_cv_as) + ;; +esac + +# Identify the linker which will work hand-in-glove with the newly +# built GCC, so that we can examine its features. This is the linker +# which will be driven by the driver program. +# +# If build != host, and we aren't building gas in-tree, we identify a +# build->target linker and hope that it will have the same features +# as the host->target linker we'll be using. +AC_MSG_CHECKING(what linker to use) +in_tree_ld=no +gcc_cv_ld= +gcc_cv_gld_major_version= +gcc_cv_gld_minor_version= +gcc_cv_ld_gld_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/ld +gcc_cv_ld_bfd_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/bfd +if test -x "$DEFAULT_LINKER"; then + gcc_cv_ld="$DEFAULT_LINKER" +elif test -x "$LD"; then + gcc_cv_ld="$LD" +elif test -x collect-ld$host_exeext; then + # Build using linker in the current directory. + gcc_cv_ld=./collect-ld$host_exeext +elif test -f $gcc_cv_ld_gld_srcdir/configure.in \ + && test -f ../ld/Makefile; then + # Single tree build which includes ld. + in_tree_ld=yes + in_tree_ld_is_elf=no + if (grep 'EMUL = .*elf' ../ld/Makefile \ + || grep 'EMUL = .*linux' ../ld/Makefile) > /dev/null; then + in_tree_ld_is_elf=yes + fi + for f in $gcc_cv_ld_bfd_srcdir/configure $gcc_cv_ld_gld_srcdir/configure $gcc_cv_ld_gld_srcdir/configure.in $gcc_cv_ld_gld_srcdir/Makefile.in + do +changequote(,)dnl + gcc_cv_gld_version=`grep '^VERSION=[0-9]*\.[0-9]*' $f` +changequote([,])dnl + if test x$gcc_cv_gld_version != x; then + break + fi + done +changequote(,)dnl + gcc_cv_gld_major_version=`expr "$gcc_cv_gld_version" : "VERSION=\([0-9]*\)"` + gcc_cv_gld_minor_version=`expr "$gcc_cv_gld_version" : "VERSION=[0-9]*\.\([0-9]*\)"` +changequote([,])dnl + rm -f collect-ld$host_exeext + $symbolic_link ../ld/ld-new$host_exeext collect-ld$host_exeext \ + 2>/dev/null +fi + +if test "x$gcc_cv_ld" = x; then + # Search the same directories that the installed compiler will + # search. Else we may find the wrong linker and lose. If we + # do not find a suitable linker binary, then try the user's + # path. + # + # Also note we have to check MD_EXEC_PREFIX before checking the + # user's path. Unfortunately, there is no good way to get at the + # value of MD_EXEC_PREFIX here. So we do a brute force search + # through all the known MD_EXEC_PREFIX values. Ugh. This needs + # to be fixed as part of the make/configure rewrite too. + + if test "x$exec_prefix" = xNONE; then + if test "x$prefix" = xNONE; then + test_prefix=/usr/local + else + test_prefix=$prefix + fi + else + test_prefix=$exec_prefix + fi + + # If the loop below does not find an linker, then use whatever + # one we can find in the users's path. + # user's path. + if test "x$program_prefix" != xNONE; then + gcc_cv_ld=${program_prefix}ld$host_exeext + else + gcc_cv_ld=`echo ld | sed ${program_transform_name}`$host_exeext + fi + + test_dirs="$test_prefix/libexec/gcc/$target_noncanonical/$gcc_version \ + $test_prefix/libexec/gcc/$target_noncanonical \ + /usr/lib/gcc/$target_noncanonical/$gcc_version \ + /usr/lib/gcc/$target_noncanonical \ + $test_prefix/$target_noncanonical/bin/$target_noncanonical/$gcc_version \ + $test_prefix/$target_noncanonical/bin" + + if test x$host = x$target; then + test_dirs="$test_dirs \ + /usr/libexec \ + /usr/ccs/gcc \ + /usr/ccs/bin \ + /udk/usr/ccs/bin \ + /bsd43/usr/lib/cmplrs/cc \ + /usr/cross64/usr/bin \ + /usr/lib/cmplrs/cc \ + /sysv/usr/lib/cmplrs/cc \ + /svr4/usr/lib/cmplrs/cc \ + /usr/bin" + fi + + for dir in $test_dirs; do + if test -x $dir/ld$host_exeext; then + gcc_cv_ld=$dir/ld$host_exeext + break; + fi + done +fi +case $in_tree_ld in + yes) + AC_MSG_RESULT("newly built ld") + ;; + no) + AC_MSG_RESULT($gcc_cv_ld) + ;; +esac + +# Figure out what nm we will be using. +gcc_cv_binutils_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/binutils +AC_MSG_CHECKING(what nm to use) +in_tree_nm=no +if test -x nm$host_exeext; then + gcc_cv_nm=./nm$host_exeext +elif test -f $gcc_cv_binutils_srcdir/configure.in \ + && test -f ../binutils/Makefile; then + # Single tree build which includes binutils. + in_tree_nm=yes + gcc_cv_nm=./nm$host_exeext + rm -f nm$host_exeext + $symbolic_link ../binutils/nm-new$host_exeext nm$host_exeext 2>/dev/null +elif test "x$program_prefix" != xNONE; then + gcc_cv_nm=${program_prefix}nm$host_exeext +else + gcc_cv_nm=`echo nm | sed ${program_transform_name}`$host_exeext +fi +case $in_tree_nm in + yes) AC_MSG_RESULT("newly built nm") ;; + no) AC_MSG_RESULT($gcc_cv_nm) ;; +esac + +# Figure out what objdump we will be using. +AC_MSG_CHECKING(what objdump to use) +in_tree_objdump=no +if test -x objdump$host_exeext; then + gcc_cv_objdump=./objdump$host_exeext +elif test -f $gcc_cv_binutils_srcdir/configure.in \ + && test -f ../binutils/Makefile; then + # Single tree build which includes binutils. + in_tree_objdump=yes + gcc_cv_objdump=./objdump$host_exeext + rm -f objdump$host_exeext + $symbolic_link ../binutils/objdump$host_exeext \ + objdump$host_exeext 2>/dev/null +elif test "x$program_prefix" != xNONE; then + gcc_cv_objdump=${program_prefix}objdump$host_exeext +else + gcc_cv_objdump=`echo objdump | \ + sed ${program_transform_name}`$host_exeext +fi +case $in_tree_objdump in + yes) AC_MSG_RESULT("newly built objdump") ;; + no) AC_MSG_RESULT($gcc_cv_objdump) ;; +esac + +# Figure out what assembler alignment features are present. +gcc_GAS_CHECK_FEATURE([.balign and .p2align], gcc_cv_as_balign_and_p2align, + [2,6,0],, +[.balign 4 +.p2align 2],, +[AC_DEFINE(HAVE_GAS_BALIGN_AND_P2ALIGN, 1, + [Define if your assembler supports .balign and .p2align.])]) + +gcc_GAS_CHECK_FEATURE([.p2align with maximum skip], gcc_cv_as_max_skip_p2align, + [2,8,0],, + [.p2align 4,,7],, +[AC_DEFINE(HAVE_GAS_MAX_SKIP_P2ALIGN, 1, + [Define if your assembler supports specifying the maximum number + of bytes to skip when using the GAS .p2align command.])]) + +gcc_GAS_CHECK_FEATURE([working .subsection -1], gcc_cv_as_subsection_m1, + [elf,2,9,0],, + [conftest_label1: .word 0 +.subsection -1 +conftest_label2: .word 0 +.previous], + [if test x$gcc_cv_nm != x; then + $gcc_cv_nm conftest.o | grep conftest_label1 > conftest.nm1 + $gcc_cv_nm conftest.o | grep conftest_label2 | sed -e 's/label2/label1/' > conftest.nm2 + if cmp conftest.nm1 conftest.nm2 > /dev/null 2>&1 + then : + else gcc_cv_as_subsection_m1=yes + fi + rm -f conftest.nm1 conftest.nm2 + fi], + [AC_DEFINE(HAVE_GAS_SUBSECTION_ORDERING, 1, + [Define if your assembler supports .subsection and .subsection -1 starts + emitting at the beginning of your section.])]) + +gcc_GAS_CHECK_FEATURE([.weak], gcc_cv_as_weak, + [2,2,0],, + [ .weak foobar],, +[AC_DEFINE(HAVE_GAS_WEAK, 1, [Define if your assembler supports .weak.])]) + +# .hidden needs to be supported in both the assembler and the linker, +# because GNU LD versions before 2.12.1 have buggy support for STV_HIDDEN. +# This is irritatingly difficult to feature test for; we have to check the +# date string after the version number. If we've got an in-tree +# ld, we don't know its patchlevel version, so we set the baseline at 2.13 +# to be safe. +# The gcc_GAS_CHECK_FEATURE call just sets a cache variable. +gcc_GAS_CHECK_FEATURE([.hidden], gcc_cv_as_hidden, + [elf,2,13,0],, +[ .hidden foobar +foobar:]) + +AC_CACHE_CHECK(linker for .hidden support, gcc_cv_ld_hidden, +[if test $in_tree_ld = yes ; then + gcc_cv_ld_hidden=no + if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 13 -o "$gcc_cv_gld_major_version" -gt 2 \ + && test $in_tree_ld_is_elf = yes; then + gcc_cv_ld_hidden=yes + fi +else + gcc_cv_ld_hidden=yes + ld_ver=`$gcc_cv_ld --version 2>/dev/null | sed 1q` + if echo "$ld_ver" | grep GNU > /dev/null; then +changequote(,)dnl + ld_vers=`echo $ld_ver | sed -n \ + -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*\)$,\1,p' \ + -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\)$,\1,p' \ + -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\)$,\1,p' \ + -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*\)[ ].*$,\1,p' \ + -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\)[ ].*$,\1,p' \ + -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\)[ ].*$,\1,p'` + ld_date=`echo $ld_ver | sed -n 's,^.*\([2-9][0-9][0-9][0-9]\)[-]*\([01][0-9]\)[-]*\([0-3][0-9]\).*$,\1\2\3,p'` + if test 0"$ld_date" -lt 20020404; then + if test -n "$ld_date"; then + # If there was date string, but was earlier than 2002-04-04, fail + gcc_cv_ld_hidden=no + elif test -z "$ld_vers"; then + # If there was no date string nor ld version number, something is wrong + gcc_cv_ld_hidden=no + else + ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'` + ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'` + ld_vers_patch=`expr "$ld_vers" : '[0-9]*\.[0-9]*\.\([0-9]*\)'` + test -z "$ld_vers_patch" && ld_vers_patch=0 + if test "$ld_vers_major" -lt 2; then + gcc_cv_ld_hidden=no + elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 12; then + gcc_cv_ld_hidden="no" + elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 12 -a "$ld_vers_patch" -eq 0; then + gcc_cv_ld_hidden=no + fi + fi +changequote([,])dnl + fi + else + case "${target}" in + hppa64*-*-hpux* | ia64*-*-hpux*) + gcc_cv_ld_hidden=yes + ;; + *) + gcc_cv_ld_hidden=no + ;; + esac + fi +fi]) +libgcc_visibility=no +AC_SUBST(libgcc_visibility) +if test $gcc_cv_as_hidden = yes && test $gcc_cv_ld_hidden = yes; then + libgcc_visibility=yes + AC_DEFINE(HAVE_GAS_HIDDEN, 1, + [Define if your assembler and linker support .hidden.]) +fi + +# Check if we have .[us]leb128, and support symbol arithmetic with it. +gcc_GAS_CHECK_FEATURE([.sleb128 and .uleb128], gcc_cv_as_leb128, + [elf,2,11,0],, +[ .data + .uleb128 L2 - L1 +L1: + .uleb128 1280 + .sleb128 -1010 +L2:], + [# GAS versions before 2.11 do not support uleb128, + # despite appearing to. + # ??? There exists an elf-specific test that will crash + # the assembler. Perhaps it's better to figure out whether + # arbitrary sections are supported and try the test. + as_ver=`$gcc_cv_as --version 2>/dev/null | sed 1q` + if echo "$as_ver" | grep GNU > /dev/null; then +changequote(,)dnl + as_ver=`echo $as_ver | sed -e 's/GNU assembler \([0-9.][0-9.]*\).*/\1/'` + as_major=`echo $as_ver | sed 's/\..*//'` + as_minor=`echo $as_ver | sed 's/[^.]*\.\([0-9]*\).*/\1/'` +changequote([,])dnl + if test $as_major -eq 2 && test $as_minor -lt 11 + then : + else gcc_cv_as_leb128=yes + fi + fi], + [AC_DEFINE(HAVE_AS_LEB128, 1, + [Define if your assembler supports .sleb128 and .uleb128.])]) + +# GAS versions up to and including 2.11.0 may mis-optimize +# .eh_frame data. +gcc_GAS_CHECK_FEATURE(eh_frame optimization, gcc_cv_as_eh_frame, + [elf,2,12,0],, +[ .text +.LFB1: + .4byte 0 +.L1: + .4byte 0 +.LFE1: + .section .eh_frame,"aw",@progbits +__FRAME_BEGIN__: + .4byte .LECIE1-.LSCIE1 +.LSCIE1: + .4byte 0x0 + .byte 0x1 + .ascii "z\0" + .byte 0x1 + .byte 0x78 + .byte 0x1a + .byte 0x0 + .byte 0x4 + .4byte 1 + .p2align 1 +.LECIE1: +.LSFDE1: + .4byte .LEFDE1-.LASFDE1 +.LASFDE1: + .4byte .LASFDE1-__FRAME_BEGIN__ + .4byte .LFB1 + .4byte .LFE1-.LFB1 + .byte 0x4 + .4byte .LFE1-.LFB1 + .byte 0x4 + .4byte .L1-.LFB1 +.LEFDE1:], +[ dnl # For autoconf 2.5x, must protect trailing spaces with @&t@. +cat > conftest.lit <<EOF + 0000 10000000 00000000 017a0001 781a0004 .........z..x... + 0010 01000000 12000000 18000000 00000000 ................ + 0020 08000000 04080000 0044 .........D @&t@ +EOF +cat > conftest.big <<EOF + 0000 00000010 00000000 017a0001 781a0004 .........z..x... + 0010 00000001 00000012 00000018 00000000 ................ + 0020 00000008 04000000 0844 .........D @&t@ +EOF + # If the assembler didn't choke, and we can objdump, + # and we got the correct data, then succeed. + if test x$gcc_cv_objdump != x \ + && $gcc_cv_objdump -s -j .eh_frame conftest.o 2>/dev/null \ + | tail -3 > conftest.got \ + && { cmp conftest.lit conftest.got > /dev/null 2>&1 \ + || cmp conftest.big conftest.got > /dev/null 2>&1; } + then + gcc_cv_as_eh_frame=yes + elif AC_TRY_COMMAND($gcc_cv_as -o conftest.o --traditional-format /dev/null); then + gcc_cv_as_eh_frame=buggy + else + # Uh oh, what do we do now? + gcc_cv_as_eh_frame=no + fi]) + +if test $gcc_cv_as_eh_frame = buggy; then + AC_DEFINE(USE_AS_TRADITIONAL_FORMAT, 1, + [Define if your assembler mis-optimizes .eh_frame data.]) +fi + +gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge, + [elf,2,12,0], [--fatal-warnings], + [.section .rodata.str, "aMS", @progbits, 1]) +AC_DEFINE_UNQUOTED(HAVE_GAS_SHF_MERGE, + [`if test $gcc_cv_as_shf_merge = yes; then echo 1; else echo 0; fi`], +[Define 0/1 if your assembler supports marking sections with SHF_MERGE flag.]) + +# Thread-local storage - the check is heavily parametrized. +conftest_s= +tls_first_major= +tls_first_minor= +tls_as_opt= +case "$target" in +changequote(,)dnl + alpha*-*-*) + conftest_s=' + .section ".tdata","awT",@progbits +foo: .long 25 + .text + ldq $27,__tls_get_addr($29) !literal!1 + lda $16,foo($29) !tlsgd!1 + jsr $26,($27),__tls_get_addr !lituse_tlsgd!1 + ldq $27,__tls_get_addr($29) !literal!2 + lda $16,foo($29) !tlsldm!2 + jsr $26,($27),__tls_get_addr !lituse_tlsldm!2 + ldq $1,foo($29) !gotdtprel + ldah $2,foo($29) !dtprelhi + lda $3,foo($2) !dtprello + lda $4,foo($29) !dtprel + ldq $1,foo($29) !gottprel + ldah $2,foo($29) !tprelhi + lda $3,foo($2) !tprello + lda $4,foo($29) !tprel' + tls_first_major=2 + tls_first_minor=13 + tls_as_opt=--fatal-warnings + ;; + i[34567]86-*-*) + conftest_s=' + .section ".tdata","awT",@progbits +foo: .long 25 + .text + movl %gs:0, %eax + leal foo@TLSGD(,%ebx,1), %eax + leal foo@TLSLDM(%ebx), %eax + leal foo@DTPOFF(%eax), %edx + movl foo@GOTTPOFF(%ebx), %eax + subl foo@GOTTPOFF(%ebx), %eax + addl foo@GOTNTPOFF(%ebx), %eax + movl foo@INDNTPOFF, %eax + movl $foo@TPOFF, %eax + subl $foo@TPOFF, %eax + leal foo@NTPOFF(%ecx), %eax' + tls_first_major=2 + tls_first_minor=14 + tls_as_opt=--fatal-warnings + ;; + x86_64-*-*) + conftest_s=' + .section ".tdata","awT",@progbits +foo: .long 25 + .text + movq %fs:0, %rax + leaq foo@TLSGD(%rip), %rdi + leaq foo@TLSLD(%rip), %rdi + leaq foo@DTPOFF(%rax), %rdx + movq foo@GOTTPOFF(%rip), %rax + movq $foo@TPOFF, %rax' + tls_first_major=2 + tls_first_minor=14 + tls_as_opt=--fatal-warnings + ;; + ia64-*-*) + conftest_s=' + .section ".tdata","awT",@progbits +foo: data8 25 + .text + addl r16 = @ltoff(@dtpmod(foo#)), gp + addl r17 = @ltoff(@dtprel(foo#)), gp + addl r18 = @ltoff(@tprel(foo#)), gp + addl r19 = @dtprel(foo#), gp + adds r21 = @dtprel(foo#), r13 + movl r23 = @dtprel(foo#) + addl r20 = @tprel(foo#), gp + adds r22 = @tprel(foo#), r13 + movl r24 = @tprel(foo#)' + tls_first_major=2 + tls_first_minor=13 + tls_as_opt=--fatal-warnings + ;; + powerpc-*-*) + conftest_s=' + .section ".tdata","awT",@progbits + .align 2 +ld0: .space 4 +ld1: .space 4 +x1: .space 4 +x2: .space 4 +x3: .space 4 + .text + addi 3,31,ld0@got@tlsgd + bl __tls_get_addr + addi 3,31,x1@got@tlsld + bl __tls_get_addr + addi 9,3,x1@dtprel + addis 9,3,x2@dtprel@ha + addi 9,9,x2@dtprel@l + lwz 9,x3@got@tprel(31) + add 9,9,x@tls + addi 9,2,x1@tprel + addis 9,2,x2@tprel@ha + addi 9,9,x2@tprel@l' + tls_first_major=2 + tls_first_minor=14 + tls_as_opt="-a32 --fatal-warnings" + ;; + powerpc64-*-*) + conftest_s=' + .section ".tdata","awT",@progbits + .align 3 +ld0: .space 8 +ld1: .space 8 +x1: .space 8 +x2: .space 8 +x3: .space 8 + .text + addi 3,2,ld0@got@tlsgd + bl .__tls_get_addr + nop + addi 3,2,ld1@toc + bl .__tls_get_addr + nop + addi 3,2,x1@got@tlsld + bl .__tls_get_addr + nop + addi 9,3,x1@dtprel + bl .__tls_get_addr + nop + addis 9,3,x2@dtprel@ha + addi 9,9,x2@dtprel@l + bl .__tls_get_addr + nop + ld 9,x3@got@dtprel(2) + add 9,9,3 + bl .__tls_get_addr + nop' + tls_first_major=2 + tls_first_minor=14 + tls_as_opt="-a64 --fatal-warnings" + ;; + s390-*-*) + conftest_s=' + .section ".tdata","awT",@progbits +foo: .long 25 + .text + .long foo@TLSGD + .long foo@TLSLDM + .long foo@DTPOFF + .long foo@NTPOFF + .long foo@GOTNTPOFF + .long foo@INDNTPOFF + l %r1,foo@GOTNTPOFF(%r12) + l %r1,0(%r1):tls_load:foo + bas %r14,0(%r1,%r13):tls_gdcall:foo + bas %r14,0(%r1,%r13):tls_ldcall:foo' + tls_first_major=2 + tls_first_minor=14 + tls_as_opt="-m31 --fatal-warnings" + ;; + s390x-*-*) + conftest_s=' + .section ".tdata","awT",@progbits +foo: .long 25 + .text + .quad foo@TLSGD + .quad foo@TLSLDM + .quad foo@DTPOFF + .quad foo@NTPOFF + .quad foo@GOTNTPOFF + lg %r1,foo@GOTNTPOFF(%r12) + larl %r1,foo@INDNTPOFF + brasl %r14,__tls_get_offset@PLT:tls_gdcall:foo + brasl %r14,__tls_get_offset@PLT:tls_ldcall:foo' + tls_first_major=2 + tls_first_minor=14 + tls_as_opt="-m64 -Aesame --fatal-warnings" + ;; + sh-*-* | sh[34]-*-*) + conftest_s=' + .section ".tdata","awT",@progbits +foo: .long 25 + .text + .long foo@TLSGD + .long foo@TLSLDM + .long foo@DTPOFF + .long foo@GOTTPOFF + .long foo@TPOFF' + tls_first_major=2 + tls_first_minor=13 + tls_as_opt=--fatal-warnings + ;; + sparc*-*-*) + case "$target" in + sparc*-sun-solaris2.*) + on_solaris=yes + ;; + *) + on_solaris=no + ;; + esac + if test x$on_solaris = xyes && test x$gas_flag = xno; then + conftest_s=' + .section ".tdata",#alloc,#write,#tls +foo: .long 25 + .text + sethi %tgd_hi22(foo), %o0 + add %o0, %tgd_lo10(foo), %o1 + add %l7, %o1, %o0, %tgd_add(foo) + call __tls_get_addr, %tgd_call(foo) + sethi %tldm_hi22(foo), %l1 + add %l1, %tldm_lo10(foo), %l2 + add %l7, %l2, %o0, %tldm_add(foo) + call __tls_get_addr, %tldm_call(foo) + sethi %tldo_hix22(foo), %l3 + xor %l3, %tldo_lox10(foo), %l4 + add %o0, %l4, %l5, %tldo_add(foo) + sethi %tie_hi22(foo), %o3 + add %o3, %tie_lo10(foo), %o3 + ld [%l7 + %o3], %o2, %tie_ld(foo) + add %g7, %o2, %o4, %tie_add(foo) + sethi %tle_hix22(foo), %l1 + xor %l1, %tle_lox10(foo), %o5 + ld [%g7 + %o5], %o1' + tls_first_major=0 + tls_first_minor=0 + else + conftest_s=' + .section ".tdata","awT",@progbits +foo: .long 25 + .text + sethi %tgd_hi22(foo), %o0 + add %o0, %tgd_lo10(foo), %o1 + add %l7, %o1, %o0, %tgd_add(foo) + call __tls_get_addr, %tgd_call(foo) + sethi %tldm_hi22(foo), %l1 + add %l1, %tldm_lo10(foo), %l2 + add %l7, %l2, %o0, %tldm_add(foo) + call __tls_get_addr, %tldm_call(foo) + sethi %tldo_hix22(foo), %l3 + xor %l3, %tldo_lox10(foo), %l4 + add %o0, %l4, %l5, %tldo_add(foo) + sethi %tie_hi22(foo), %o3 + add %o3, %tie_lo10(foo), %o3 + ld [%l7 + %o3], %o2, %tie_ld(foo) + add %g7, %o2, %o4, %tie_add(foo) + sethi %tle_hix22(foo), %l1 + xor %l1, %tle_lox10(foo), %o5 + ld [%g7 + %o5], %o1' + tls_first_major=2 + tls_first_minor=14 + tls_as_opt="-32 --fatal-warnings" + fi + ;; +changequote([,])dnl +esac +if test -z "$tls_first_major"; then + : # If we don't have a check, assume no support. +else + gcc_GAS_CHECK_FEATURE(thread-local storage support, gcc_cv_as_tls, + [$tls_first_major,$tls_first_minor,0], [$tls_as_opt], [$conftest_s],, + [AC_DEFINE(HAVE_AS_TLS, 1, + [Define if your assembler supports thread-local storage.])]) +fi + +# Target-specific assembler checks. + +case "$target" in + # All TARGET_ABI_OSF targets. + alpha*-*-osf* | alpha*-*-linux* | alpha*-*-*bsd*) + gcc_GAS_CHECK_FEATURE([explicit relocation support], + gcc_cv_as_alpha_explicit_relocs, [2,12,0],, +[ .set nomacro + .text + extbl $3, $2, $3 !lituse_bytoff!1 + ldq $2, a($29) !literal!1 + ldq $4, b($29) !literal!2 + ldq_u $3, 0($2) !lituse_base!1 + ldq $27, f($29) !literal!5 + jsr $26, ($27), f !lituse_jsr!5 + ldah $29, 0($26) !gpdisp!3 + lda $0, c($29) !gprel + ldah $1, d($29) !gprelhigh + lda $1, d($1) !gprellow + lda $29, 0($29) !gpdisp!3],, + [AC_DEFINE(HAVE_AS_EXPLICIT_RELOCS, 1, + [Define if your assembler supports explicit relocations.])]) + ;; + + cris-*-*) + gcc_GAS_CHECK_FEATURE([-no-mul-bug-abort option], + gcc_cv_as_cris_no_mul_bug,[2,15,91], + [-no-mul-bug-abort], [.text],, + [AC_DEFINE(HAVE_AS_NO_MUL_BUG_ABORT_OPTION, 1, + [Define if your assembler supports the -no-mul-bug-abort option.])]) + ;; + + sparc*-*-*) + gcc_GAS_CHECK_FEATURE([.register], gcc_cv_as_sparc_register_op,,, + [.register %g2, #scratch],, + [AC_DEFINE(HAVE_AS_REGISTER_PSEUDO_OP, 1, + [Define if your assembler supports .register.])]) + + gcc_GAS_CHECK_FEATURE([-relax option], gcc_cv_as_sparc_relax,, + [-relax], [.text],, + [AC_DEFINE(HAVE_AS_RELAX_OPTION, 1, + [Define if your assembler supports -relax option.])]) + + gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs], + gcc_cv_as_sparc_ua_pcrel,, + [-K PIC], +[.text +foo: + nop +.data +.align 4 +.byte 0 +.uaword %r_disp32(foo)], + [if test x$gcc_cv_ld != x \ + && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then + gcc_cv_as_sparc_ua_pcrel=yes + fi + rm -f conftest], + [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL, 1, + [Define if your assembler and linker support unaligned PC relative relocs.]) + + gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs against hidden symbols], + gcc_cv_as_sparc_ua_pcrel_hidden,, + [-K PIC], +[.data +.align 4 +.byte 0x31 +.uaword %r_disp32(foo) +.byte 0x32, 0x33, 0x34 +.global foo +.hidden foo +foo: +.skip 4], + [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \ + && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1 \ + && $gcc_cv_objdump -s -j .data conftest 2> /dev/null \ + | grep ' 31000000 07323334' > /dev/null 2>&1; then + if $gcc_cv_objdump -R conftest 2> /dev/null \ + | grep 'DISP32' > /dev/null 2>&1; then + : + else + gcc_cv_as_sparc_ua_pcrel_hidden=yes + fi + fi + rm -f conftest], + [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL_HIDDEN, 1, + [Define if your assembler and linker support unaligned PC relative relocs against hidden symbols.])]) + ]) # unaligned pcrel relocs + + gcc_GAS_CHECK_FEATURE([offsetable %lo()], + gcc_cv_as_sparc_offsetable_lo10,, + [-xarch=v9], +[.text + or %g1, %lo(ab) + 12, %g1 + or %g1, %lo(ab + 12), %g1], + [if test x$gcc_cv_objdump != x \ + && $gcc_cv_objdump -s -j .text conftest.o 2> /dev/null \ + | grep ' 82106000 82106000' > /dev/null 2>&1; then + gcc_cv_as_offsetable_lo10=yes + fi], + [AC_DEFINE(HAVE_AS_OFFSETABLE_LO10, 1, + [Define if your assembler supports offsetable %lo().])]) + ;; + +changequote(,)dnl + i[34567]86-*-* | x86_64-*-*) +changequote([,])dnl + gcc_GAS_CHECK_FEATURE([filds and fists mnemonics], + gcc_cv_as_ix86_filds_fists, + [2,9,0],, [filds mem; fists mem],, + [AC_DEFINE(HAVE_GAS_FILDS_FISTS, 1, + [Define if your assembler uses the new HImode fild and fist notation.])]) + + gcc_GAS_CHECK_FEATURE([cmov syntax], + gcc_cv_as_ix86_cmov_sun_syntax,,, + [cmovl.l %edx, %eax],, + [AC_DEFINE(HAVE_AS_IX86_CMOV_SUN_SYNTAX, 1, + [Define if your assembler supports the Sun syntax for cmov.])]) + + # This one is used unconditionally by i386.[ch]; it is to be defined + # to 1 if the feature is present, 0 otherwise. + gcc_GAS_CHECK_FEATURE([GOTOFF in data], + gcc_cv_as_ix86_gotoff_in_data, [2,11,0],, +[ .text +.L0: + nop + .data + .long .L0@GOTOFF]) + AC_DEFINE_UNQUOTED(HAVE_AS_GOTOFF_IN_DATA, + [`if test $gcc_cv_as_ix86_gotoff_in_data = yes; then echo 1; else echo 0; fi`], + [Define true if the assembler supports '.long foo@GOTOFF'.]) + ;; + + ia64*-*-*) + gcc_GAS_CHECK_FEATURE([ltoffx and ldxmov relocs], + gcc_cv_as_ia64_ltoffx_ldxmov_relocs, [2,14,0],, +[ .text + addl r15 = @ltoffx(x#), gp + ;; + ld8.mov r16 = [[r15]], x#],, + [AC_DEFINE(HAVE_AS_LTOFFX_LDXMOV_RELOCS, 1, + [Define if your assembler supports ltoffx and ldxmov relocations.])]) + + ;; + + powerpc*-*-*) + case $target in + *-*-aix*) conftest_s=' .csect .text[[PR]] + mfcr 3,128';; + *-*-darwin*) conftest_s=' .text + mfcr r3,128';; + *) conftest_s=' .text + mfcr 3,128';; + esac + + gcc_GAS_CHECK_FEATURE([mfcr field support], + gcc_cv_as_powerpc_mfcrf, [2,14,0],, + [$conftest_s],, + [AC_DEFINE(HAVE_AS_MFCRF, 1, + [Define if your assembler supports mfcr field.])]) + ;; + + mips*-*-*) + gcc_GAS_CHECK_FEATURE([explicit relocation support], + gcc_cv_as_mips_explicit_relocs, [2,14,0],, +[ lw $4,%gp_rel(foo)($4)],, + [if test x$target_cpu_default = x + then target_cpu_default=MASK_EXPLICIT_RELOCS + else target_cpu_default="($target_cpu_default)|MASK_EXPLICIT_RELOCS" + fi]) + + ;; +esac +# ??? Not all targets support dwarf2 debug_line, even within a version +# of gas. Moreover, we need to emit a valid instruction to trigger any +# info to the output file. So, as supported targets are added to gas 2.11, +# add some instruction here to (also) show we expect this might work. +# ??? Once 2.11 is released, probably need to add first known working +# version to the per-target configury. +case "$target" in + i?86*-*-* | mips*-*-* | alpha*-*-* | powerpc*-*-* | sparc*-*-* | m68*-*-* \ + | x86_64*-*-* | hppa*-*-* | arm*-*-* | strongarm*-*-* | xscale*-*-* \ + | xstormy16*-*-* | cris-*-* | xtensa-*-*) + insn="nop" + ;; + ia64*-*-* | s390*-*-*) + insn="nop 0" + ;; + mmix-*-*) + insn="swym 0" + ;; +esac +if test x"$insn" != x; then + conftest_s="\ + .file 1 \"conftest.s\" + .loc 1 3 0 + $insn" + gcc_GAS_CHECK_FEATURE([dwarf2 debug_line support], + gcc_cv_as_dwarf2_debug_line, + [elf,2,11,0],, [$conftest_s], + [# ??? This fails with non-gnu grep. Maybe use objdump? + if grep debug_line conftest.o > /dev/null 2>&1; then + gcc_cv_as_dwarf2_debug_line=yes + fi]) + +# The .debug_line file table must be in the exact order that +# we specified the files, since these indices are also used +# by DW_AT_decl_file. Approximate this test by testing if +# the assembler bitches if the same index is assigned twice. + gcc_GAS_CHECK_FEATURE([buggy dwarf2 .file directive], + gcc_cv_as_dwarf2_file_buggy,,, +[ .file 1 "foo.s" + .file 1 "bar.s"]) + + if test $gcc_cv_as_dwarf2_debug_line = yes \ + && test $gcc_cv_as_dwarf2_file_buggy = no; then + AC_DEFINE(HAVE_AS_DWARF2_DEBUG_LINE, 1, + [Define if your assembler supports dwarf2 .file/.loc directives, + and preserves file table indices exactly as given.]) + fi + + gcc_GAS_CHECK_FEATURE([--gdwarf2 option], + gcc_cv_as_gdwarf2_flag, + [elf,2,11,0], [--gdwarf2], [$insn],, + [AC_DEFINE(HAVE_AS_GDWARF2_DEBUG_FLAG, 1, +[Define if your assembler supports the --gdwarf2 option.])]) + + gcc_GAS_CHECK_FEATURE([--gstabs option], + gcc_cv_as_gstabs_flag, + [elf,2,11,0], [--gstabs], [$insn], + [# The native Solaris 9/Intel assembler doesn't understand --gstabs + # and warns about it, but still exits successfully. So check for + # this. + if AC_TRY_COMMAND([$gcc_cv_as --gstabs -o conftest.o conftest.s 2>&1 | grep -i warning > /dev/null]) + then : + else gcc_cv_as_gstabs_flag=yes + fi], + [AC_DEFINE(HAVE_AS_GSTABS_DEBUG_FLAG, 1, +[Define if your assembler supports the --gstabs option.])]) +fi + +AC_MSG_CHECKING(linker read-only and read-write section mixing) +gcc_cv_ld_ro_rw_mix=unknown +if test $in_tree_ld = yes ; then + if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2 \ + && test $in_tree_ld_is_elf = yes; then + gcc_cv_ld_ro_rw_mix=read-write + fi +elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then + echo '.section myfoosect, "a"' > conftest1.s + echo '.section myfoosect, "aw"' > conftest2.s + echo '.byte 1' >> conftest2.s + echo '.section myfoosect, "a"' > conftest3.s + echo '.byte 0' >> conftest3.s + if $gcc_cv_as -o conftest1.o conftest1.s > /dev/null 2>&1 \ + && $gcc_cv_as -o conftest2.o conftest2.s > /dev/null 2>&1 \ + && $gcc_cv_as -o conftest3.o conftest3.s > /dev/null 2>&1 \ + && $gcc_cv_ld -shared -o conftest1.so conftest1.o \ + conftest2.o conftest3.o > /dev/null 2>&1; then + gcc_cv_ld_ro_rw_mix=`$gcc_cv_objdump -h conftest1.so \ + | sed -e '/myfoosect/!d' -e N` + if echo "$gcc_cv_ld_ro_rw_mix" | grep CONTENTS > /dev/null; then + if echo "$gcc_cv_ld_ro_rw_mix" | grep READONLY > /dev/null; then + gcc_cv_ld_ro_rw_mix=read-only + else + gcc_cv_ld_ro_rw_mix=read-write + fi + fi + fi +changequote(,)dnl + rm -f conftest.* conftest[123].* +changequote([,])dnl +fi +if test x$gcc_cv_ld_ro_rw_mix = xread-write; then + AC_DEFINE(HAVE_LD_RO_RW_SECTION_MIXING, 1, + [Define if your linker links a mix of read-only + and read-write sections into a read-write section.]) +fi +AC_MSG_RESULT($gcc_cv_ld_ro_rw_mix) + +AC_MSG_CHECKING(linker PT_GNU_EH_FRAME support) +gcc_cv_ld_eh_frame_hdr=no +if test $in_tree_ld = yes ; then + if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 12 -o "$gcc_cv_gld_major_version" -gt 2 \ + && test $in_tree_ld_is_elf = yes; then + gcc_cv_ld_eh_frame_hdr=yes + fi +elif test x$gcc_cv_ld != x; then + # Check if linker supports --eh-frame-hdr option + if $gcc_cv_ld --help 2>/dev/null | grep eh-frame-hdr > /dev/null; then + gcc_cv_ld_eh_frame_hdr=yes + fi +fi +if test x"$gcc_cv_ld_eh_frame_hdr" = xyes; then + AC_DEFINE(HAVE_LD_EH_FRAME_HDR, 1, +[Define if your linker supports --eh-frame-hdr option.]) +fi +AC_MSG_RESULT($gcc_cv_ld_eh_frame_hdr) + +AC_MSG_CHECKING(linker position independent executable support) +gcc_cv_ld_pie=no +if test $in_tree_ld = yes ; then + if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 15 -o "$gcc_cv_gld_major_version" -gt 2 \ + && test $in_tree_ld_is_elf = yes; then + gcc_cv_ld_pie=yes + fi +elif test x$gcc_cv_ld != x; then + # Check if linker supports -pie option + if $gcc_cv_ld --help 2>/dev/null | grep -- -pie > /dev/null; then + gcc_cv_ld_pie=yes + fi +fi +if test x"$gcc_cv_ld_pie" = xyes; then + AC_DEFINE(HAVE_LD_PIE, 1, +[Define if your linker supports -pie option.]) +fi +AC_MSG_RESULT($gcc_cv_ld_pie) + +case "$target" in + *-*-linux*) + AC_CACHE_CHECK(linker --as-needed support, + gcc_cv_ld_as_needed, + [gcc_cv_ld_as_needed=no + if test $in_tree_ld = yes ; then + if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \ + && test $in_tree_ld_is_elf = yes; then + gcc_cv_ld_as_needed=yes + fi + elif test x$gcc_cv_ld != x; then + # Check if linker supports --as-needed and --no-as-needed options + if $gcc_cv_ld --help 2>/dev/null | grep as-needed > /dev/null; then + gcc_cv_ld_as_needed=yes + fi + fi + ]) + if test x"$gcc_cv_ld_as_needed" = xyes; then + AC_DEFINE(HAVE_LD_AS_NEEDED, 1, + [Define if your linker supports --as-needed and --no-as-needed options.]) + fi + ;; +esac + +if test x$with_sysroot = x && test x$host = x$target \ + && test "$prefix" != "/usr" && test "x$prefix" != "x$local_prefix" ; then + AC_DEFINE_UNQUOTED(PREFIX_INCLUDE_DIR, "$prefix/include", +[Define to PREFIX/include if cpp should also search that directory.]) +fi + +# Figure out what language subdirectories are present. +# Look if the user specified --enable-languages="..."; if not, use +# the environment variable $LANGUAGES if defined. $LANGUAGES might +# go away some day. +# NB: embedded tabs in this IF block -- do not untabify +if test x"${enable_languages+set}" != xset; then + if test x"${LANGUAGES+set}" = xset; then + enable_languages="${LANGUAGES}" + AC_MSG_WARN([setting LANGUAGES is deprecated, use --enable-languages instead]) + + else + enable_languages=all + fi +else + if test x"${enable_languages}" = x \ + || test x"${enable_languages}" = xyes; + then + AC_MSG_ERROR([--enable-languages needs at least one language argument]) + fi +fi +enable_languages=`echo "${enable_languages}" | sed -e 's/[[ ,]][[ ,]]*/,/g' -e 's/,$//'` + +# First scan to see if an enabled language requires some other language. +# We assume that a given config-lang.in will list all the language +# front ends it requires, even if some are required indirectly. +for lang in ${srcdir}/*/config-lang.in +do + case $lang in + # The odd quoting in the next line works around + # an apparent bug in bash 1.12 on linux. +changequote(,)dnl + ${srcdir}/[*]/config-lang.in) + ;; + *) + lang_alias=`sed -n -e 's,^language=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^language=\([^ ]*\).*$,\1,p' $lang` + this_lang_requires=`sed -n -e 's,^lang_requires=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^lang_requires=\([^ ]*\).*$,\1,p' $lang` + for other in $this_lang_requires + do + case ,${enable_languages}, in + *,$other,*) + ;; + *,all,*) + ;; + *,$lang_alias,*) + enable_languages="$enable_languages,$other" + ;; + esac + done + ;; +changequote([,])dnl + esac +done + +expected_languages=`echo ,${enable_languages}, | sed -e 's:,: :g' -e 's: *: :g' -e 's: *: :g' -e 's:^ ::' -e 's: $::'` +found_languages= +subdirs= +for lang in ${srcdir}/*/config-lang.in +do + case $lang in + # The odd quoting in the next line works around + # an apparent bug in bash 1.12 on linux. +changequote(,)dnl + ${srcdir}/[*]/config-lang.in) ;; + *) + lang_alias=`sed -n -e 's,^language=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^language=\([^ ]*\).*$,\1,p' $lang` + this_lang_libs=`sed -n -e 's,^target_libs=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^target_libs=\([^ ]*\).*$,\1,p' $lang` + build_by_default=`sed -n -e 's,^build_by_default=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^build_by_default=\([^ ]*\).*$,\1,p' $lang` + if test "x$lang_alias" = x + then + echo "$lang doesn't set \$language." 1>&2 + exit 1 + fi + case ${build_by_default},${enable_languages}, in + *,$lang_alias,*) add_this_lang=yes ;; + no,*) add_this_lang=no ;; + *,all,*) add_this_lang=yes ;; + *) add_this_lang=no ;; + esac + found_languages="${found_languages} ${lang_alias}" + if test x"${add_this_lang}" = xyes; then + case $lang in + ${srcdir}/ada/config-lang.in) + if test x$have_gnat = xyes ; then + subdirs="$subdirs `echo $lang | sed -e 's,^.*/\([^/]*\)/config-lang.in$,\1,'`" + fi + ;; + *) + subdirs="$subdirs `echo $lang | sed -e 's,^.*/\([^/]*\)/config-lang.in$,\1,'`" + ;; + esac + fi + ;; +changequote([,])dnl + esac +done + +missing_languages= +for expected_language in ${expected_languages} .. +do + if test "${expected_language}" != ..; then + missing_language="${expected_language}" + if test "${expected_language}" = "c" \ + || test "${expected_language}" = "all"; then + missing_language= + fi + for found_language in ${found_languages} .. + do + if test "${found_language}" != ..; then + if test "${expected_language}" = "${found_language}"; then + missing_language= + fi + fi + done + if test "x${missing_language}" != x; then + missing_languages="${missing_languages} ${missing_language}" + fi + fi +done + +if test "x$missing_languages" != x; then + AC_MSG_ERROR([ +The following requested languages were not found:${missing_languages} +The following languages were available: c${found_languages}]) +fi + +# Make gthr-default.h if we have a thread file. +gthread_flags= +if test $thread_file != single; then + rm -f gthr-default.h + echo "#include \"gthr-${thread_file}.h\"" > gthr-default.h + gthread_flags=-DHAVE_GTHR_DEFAULT +fi +AC_SUBST(gthread_flags) + +# Find out what GC implementation we want, or may, use. +AC_ARG_WITH(gc, +[ --with-gc={simple,page,zone} choose the garbage collection mechanism to use + with the compiler], +[case "$withval" in + simple | page | zone) + GGC=ggc-$withval + ;; + *) + AC_MSG_ERROR([$withval is an invalid option to --with-gc]) + ;; +esac], +[GGC=ggc-page]) +AC_SUBST(GGC) +echo "Using $GGC for garbage collection." + +# Use the system's zlib library. +zlibdir=-L../zlib +zlibinc="-I\$(srcdir)/../zlib" +AC_ARG_WITH(system-zlib, +[ --with-system-zlib use installed libz], +zlibdir= +zlibinc= +) +AC_SUBST(zlibdir) +AC_SUBST(zlibinc) + +dnl Very limited version of automake's enable-maintainer-mode + +AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles]) + dnl maintainer-mode is disabled by default + AC_ARG_ENABLE(maintainer-mode, +[ --enable-maintainer-mode + enable make rules and dependencies not useful + (and sometimes confusing) to the casual installer], + maintainer_mode=$enableval, + maintainer_mode=no) + +AC_MSG_RESULT($maintainer_mode) + +if test "$maintainer_mode" = "yes"; then + MAINT='' +else + MAINT='#' +fi +AC_SUBST(MAINT)dnl + +# Make empty files to contain the specs and options for each language. +# Then add #include lines to for a compiler that has specs and/or options. + +lang_opt_files= +lang_specs_files= +lang_tree_files= +for subdir in . $subdirs +do + if test -f $srcdir/$subdir/lang.opt; then + lang_opt_files="$lang_opt_files $srcdir/$subdir/lang.opt" + fi + if test -f $srcdir/$subdir/lang-specs.h; then + lang_specs_files="$lang_specs_files $srcdir/$subdir/lang-specs.h" + fi + if test -f $srcdir/$subdir/$subdir-tree.def; then + lang_tree_files="$lang_tree_files $srcdir/$subdir/$subdir-tree.def" + fi +done + +# These (without "all_") are set in each config-lang.in. +# `language' must be a single word so is spelled singularly. +all_languages= +all_boot_languages= +all_compilers= +all_stagestuff= +all_outputs='Makefile fixinc/Makefile gccbug mklibgcc mkheaders' +# List of language makefile fragments. +all_lang_makefrags= +# List of language subdirectory makefiles. Deprecated. +all_lang_makefiles= +# Files for gengtype +all_gtfiles="$target_gtfiles" +# Files for gengtype with language +all_gtfiles_files_langs= +all_gtfiles_files_files= + +# Add the language fragments. +# Languages are added via two mechanisms. Some information must be +# recorded in makefile variables, these are defined in config-lang.in. +# We accumulate them and plug them into the main Makefile. +# The other mechanism is a set of hooks for each of the main targets +# like `clean', `install', etc. + +language_hooks="Make-hooks" + +for s in $subdirs +do + language= + boot_language= + compilers= + stagestuff= + outputs= + gtfiles= + . ${srcdir}/$s/config-lang.in + if test "x$language" = x + then + echo "${srcdir}/$s/config-lang.in doesn't set \$language." 1>&2 + exit 1 + fi + all_lang_makefrags="$all_lang_makefrags \$(srcdir)/$s/Make-lang.in" + if test -f ${srcdir}/$s/Makefile.in + then all_lang_makefiles="$s/Makefile" + fi + all_languages="$all_languages $language" + if test "x$boot_language" = xyes + then + all_boot_languages="$all_boot_languages $language" + fi + all_compilers="$all_compilers $compilers" + all_stagestuff="$all_stagestuff $stagestuff" + all_outputs="$all_outputs $outputs" + all_gtfiles="$all_gtfiles $gtfiles" + for f in $gtfiles + do + all_gtfiles_files_langs="$all_gtfiles_files_langs ${s} " + all_gtfiles_files_files="$all_gtfiles_files_files ${f} " + done +done + +# Pick up gtfiles for c +gtfiles= +s="c" +. ${srcdir}/c-config-lang.in +all_gtfiles="$all_gtfiles $gtfiles" +for f in $gtfiles +do + all_gtfiles_files_langs="$all_gtfiles_files_langs ${s} " + all_gtfiles_files_files="$all_gtfiles_files_files ${f} " +done + +check_languages= +for language in $all_languages +do + check_languages="$check_languages check-$language" +done + +# We link each language in with a set of hooks, reached indirectly via +# lang.${target}. + +rm -f Make-hooks +touch Make-hooks +target_list="all.build all.cross start.encap rest.encap tags \ + install-normal install-common install-man \ + uninstall info man srcextra srcman srcinfo \ + mostlyclean clean distclean maintainer-clean \ + stage1 stage2 stage3 stage4 stageprofile stagefeedback" +for t in $target_list +do + x= + for lang in $all_languages + do + x="$x $lang.$t" + done + echo "lang.$t: $x" >> Make-hooks +done + +# Create .gdbinit. + +echo "dir ." > .gdbinit +echo "dir ${srcdir}" >> .gdbinit +if test x$gdb_needs_out_file_path = xyes +then + echo "dir ${srcdir}/config/"`dirname ${out_file}` >> .gdbinit +fi +if test "x$subdirs" != x; then + for s in $subdirs + do + echo "dir ${srcdir}/$s" >> .gdbinit + done +fi +echo "source ${srcdir}/gdbinit.in" >> .gdbinit + +# If $(exec_prefix) exists and is not the same as $(prefix), then compute an +# absolute path for gcc_tooldir based on inserting the number of up-directory +# movements required to get from $(exec_prefix) to $(prefix) into the basic +# $(libsubdir)/@(unlibsubdir) based path. +# Don't set gcc_tooldir to tooldir since that's only passed in by the toplevel +# make and thus we'd get different behavior depending on where we built the +# sources. +if test x$exec_prefix = xNONE -o x$exec_prefix = x$prefix; then + gcc_tooldir='$(libsubdir)/$(unlibsubdir)/../$(target_noncanonical)' +else +changequote(<<, >>)dnl +# An explanation of the sed strings: +# -e 's|^\$(prefix)||' matches and eliminates 'prefix' from 'exec_prefix' +# -e 's|/$||' match a trailing forward slash and eliminates it +# -e 's|^[^/]|/|' forces the string to start with a forward slash (*) +# -e 's|/[^/]*|../|g' replaces each occurrence of /<directory> with ../ +# +# (*) Note this pattern overwrites the first character of the string +# with a forward slash if one is not already present. This is not a +# problem because the exact names of the sub-directories concerned is +# unimportant, just the number of them matters. +# +# The practical upshot of these patterns is like this: +# +# prefix exec_prefix result +# ------ ----------- ------ +# /foo /foo/bar ../ +# /foo/ /foo/bar ../ +# /foo /foo/bar/ ../ +# /foo/ /foo/bar/ ../ +# /foo /foo/bar/ugg ../../ +# + dollar='$$' + gcc_tooldir="\$(libsubdir)/\$(unlibsubdir)/\`echo \$(exec_prefix) | sed -e 's|^\$(prefix)||' -e 's|/\$(dollar)||' -e 's|^[^/]|/|' -e 's|/[^/]*|../|g'\`\$(target_noncanonical)" +changequote([, ])dnl +fi +AC_SUBST(gcc_tooldir) +AC_SUBST(dollar) + +# Find a directory in which to install a shared libgcc. + +AC_ARG_ENABLE(version-specific-runtime-libs, +[ --enable-version-specific-runtime-libs + specify that runtime libraries should be + installed in a compiler-specific directory]) + +AC_ARG_WITH(slibdir, +[ --with-slibdir=DIR shared libraries in DIR [LIBDIR]], +slibdir="$with_slibdir", +if test "${enable_version_specific_runtime_libs+set}" = set; then + slibdir='$(libsubdir)' +elif test "$host" != "$target"; then + slibdir='$(build_tooldir)/lib' +else + slibdir='$(libdir)' +fi) +AC_SUBST(slibdir) + +objdir=`${PWDCMD-pwd}` +AC_SUBST(objdir) + +# Substitute configuration variables +AC_SUBST(subdirs) +AC_SUBST(srcdir) +AC_SUBST(all_boot_languages) +AC_SUBST(all_compilers) +AC_SUBST(all_gtfiles) +AC_SUBST(all_gtfiles_files_langs) +AC_SUBST(all_gtfiles_files_files) +AC_SUBST(all_lang_makefrags) +AC_SUBST(all_lang_makefiles) +AC_SUBST(all_languages) +AC_SUBST(all_stagestuff) +AC_SUBST(build_exeext) +AC_SUBST(build_install_headers_dir) +AC_SUBST(build_xm_file_list) +AC_SUBST(build_xm_include_list) +AC_SUBST(build_xm_defines) +AC_SUBST(check_languages) +AC_SUBST(cc_set_by_configure) +AC_SUBST(quoted_cc_set_by_configure) +AC_SUBST(cpp_install_dir) +AC_SUBST(xmake_file) +AC_SUBST(tmake_file) +AC_SUBST(extra_gcc_objs) +AC_SUBST(extra_headers_list) +AC_SUBST(extra_objs) +AC_SUBST(extra_parts) +AC_SUBST(extra_passes) +AC_SUBST(extra_programs) +AC_SUBST(float_h_file) +AC_SUBST(gcc_config_arguments) +AC_SUBST(gcc_gxx_include_dir) +AC_SUBST(libstdcxx_incdir) +AC_SUBST(gcc_version) +AC_SUBST(gcc_version_full) +AC_SUBST(gcc_version_trigger) +AC_SUBST(host_exeext) +AC_SUBST(host_xm_file_list) +AC_SUBST(host_xm_include_list) +AC_SUBST(host_xm_defines) +AC_SUBST(out_host_hook_obj) +AC_SUBST(install) +AC_SUBST(lang_opt_files) +AC_SUBST(lang_specs_files) +AC_SUBST(lang_tree_files) +AC_SUBST(local_prefix) +AC_SUBST(md_file) +AC_SUBST(objc_boehm_gc) +AC_SUBST(out_file) +AC_SUBST(out_object_file) +AC_SUBST(stage_prefix_set_by_configure) +AC_SUBST(quoted_stage_prefix_set_by_configure) +AC_SUBST(symbolic_link) +AC_SUBST(thread_file) +AC_SUBST(tm_file_list) +AC_SUBST(tm_include_list) +AC_SUBST(tm_defines) +AC_SUBST(tm_p_file_list) +AC_SUBST(tm_p_include_list) +AC_SUBST(xm_file_list) +AC_SUBST(xm_include_list) +AC_SUBST(xm_defines) +AC_SUBST(target_noncanonical) +AC_SUBST(c_target_objs) +AC_SUBST(cxx_target_objs) +AC_SUBST(target_cpu_default) + +AC_SUBST_FILE(language_hooks) + +# If it doesn't already exist, create document directory +echo "checking for the document directory." 1>&2 +if test -d doc ; then + true +else + mkdir doc +fi + +# Echo link setup. +if test x${build} = x${host} ; then + if test x${host} = x${target} ; then + echo "Links are now set up to build a native compiler for ${target}." 1>&2 + else + echo "Links are now set up to build a cross-compiler" 1>&2 + echo " from ${host} to ${target}." 1>&2 + fi +else + if test x${host} = x${target} ; then + echo "Links are now set up to build (on ${build}) a native compiler" 1>&2 + echo " for ${target}." 1>&2 + else + echo "Links are now set up to build (on ${build}) a cross-compiler" 1>&2 + echo " from ${host} to ${target}." 1>&2 + fi +fi + +# Configure the subdirectories +# AC_CONFIG_SUBDIRS($subdirs) + +# Create the Makefile +# and configure language subdirectories +AC_CONFIG_FILES($all_outputs) + +AC_CONFIG_COMMANDS([default], +[ +case ${CONFIG_HEADERS} in + *auto-host.h:config.in*) + echo > cstamp-h ;; +esac +# Make sure all the subdirs exist. +for d in $subdirs +do + test -d $d || mkdir $d +done +# If the host supports symlinks, point stage[1234] at ../stage[1234] so +# bootstrapping and the installation procedure can still use +# CC="stage1/xgcc -Bstage1/". If the host doesn't support symlinks, +# FLAGS_TO_PASS has been modified to solve the problem there. +# This is virtually a duplicate of what happens in configure.lang; we do +# an extra check to make sure this only happens if ln -s can be used. +if test "$symbolic_link" = "ln -s"; then + for d in ${subdirs} fixinc ; do + STARTDIR=`${PWDCMD-pwd}` + cd $d + for t in stage1 stage2 stage3 stage4 stageprofile stagefeedback include + do + rm -f $t + $symbolic_link ../$t $t 2>/dev/null + done + cd $STARTDIR + done +else true ; fi +], +[subdirs='$subdirs' +symbolic_link='$symbolic_link' +]) +AC_OUTPUT |
