dnl Process this file with autoconf to produce a configure script.
dnl
-dnl Copyright 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013
-dnl Free Software Foundation, Inc.
+dnl Copyright (C) 2006-2015 Free Software Foundation, Inc.
dnl
dnl This file is free software; you can redistribute it and/or modify
dnl it under the terms of the GNU General Public License as published by
dnl the Free Software Foundation; either version 3 of the License, or
dnl (at your option) any later version.
-dnl
+dnl
dnl This program is distributed in the hope that it will be useful,
dnl but WITHOUT ANY WARRANTY; without even the implied warranty of
dnl MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
dnl GNU General Public License for more details.
-dnl
+dnl
dnl You should have received a copy of the GNU General Public License
dnl along with this program; see the file COPYING3. If not see
dnl <http://www.gnu.org/licenses/>.
default_big_endian=$targ_big_endian
default_osabi=$targ_osabi
+ AM_CONDITIONAL(DEFAULT_TARGET_AARCH64, test "$targ_obj" = "aarch64")
AM_CONDITIONAL(DEFAULT_TARGET_ARM, test "$targ_obj" = "arm")
AM_CONDITIONAL(DEFAULT_TARGET_I386, test "$targ_obj" = "i386")
AM_CONDITIONAL(DEFAULT_TARGET_POWERPC, test "$targ_obj" = "powerpc")
AM_CONDITIONAL(DEFAULT_TARGET_SPARC, test "$targ_obj" = "sparc")
- AM_CONDITIONAL(DEFAULT_TARGET_X86_64, test "$targ_obj" = "x86_64")
+ AM_CONDITIONAL(DEFAULT_TARGET_S390, test "$targ_obj" = "s390")
+ target_x86_64=no
+ target_x32=no
+ if test "$targ_obj" = "x86_64"; then
+ case "$target" in
+ x86_64*-linux-gnux32)
+ target_x32=yes
+ default_size=32
+ ;;
+ *)
+ target_x86_64=yes
+ ;;
+ esac
+ fi
+ AM_CONDITIONAL(DEFAULT_TARGET_X86_64, test "$target_x86_64" = "yes")
+ AM_CONDITIONAL(DEFAULT_TARGET_X32, test "$target_x32" = "yes")
AM_CONDITIONAL(DEFAULT_TARGET_TILEGX, test "$targ_obj" = "tilegx")
+ AM_CONDITIONAL(DEFAULT_TARGET_MIPS, test "$targ_obj" = "mips")
DEFAULT_TARGET=${targ_obj}
AC_SUBST(DEFAULT_TARGET)
fi
powerpc*) false;;
x86_64) false;;
sparc64) false;;
+ s390x) false;;
*) true;;
esac])
AM_CONDITIONAL(MCMODEL_MEDIUM,
[test "$target_cpu" = "x86_64" -a "$have_mcmodel_medium" = "yes" -a "$gold_cv_prog_gcc41" = "yes"])
+AC_CACHE_CHECK([whether $CC supports -fmerge-constants],
+ [gold_cv_merge_constants], [
+save_CFLAGS="$CFLAGS"
+CFLAGS="$CFLAGS -fmerge-constants"
+AC_COMPILE_IFELSE([const char *s = "foo";],
+ [gold_cv_merge_constants=yes],
+ [gold_cv_merge_constants=no])
+CFLAGS="$save_CFLAGS"])
+AC_SUBST([MERGE_CONSTANTS_FLAG])
+AS_IF([test "$gold_cv_merge_constants" = yes],
+ [MERGE_CONSTANTS_FLAG=-fmerge-constants],
+ [MERGE_CONSTANTS_FLAG=])
+
dnl Test for __thread support.
AC_CACHE_CHECK([for thread support], [gold_cv_c_thread],
[AC_COMPILE_IFELSE([__thread int i = 1;],
AM_CONDITIONAL(OMP_SUPPORT, test "$gold_cv_c_threadprivate" = "yes")
dnl Test for the -ftls-dialect=gnu2 option.
+dnl Use -Werror in case of compilers that make unknown -m options warnings.
+dnl They would pass the test here, but fail in actual use when $WARN_CFLAGS
+dnl gets set later by default Autoconf magic to include -Werror. (We are
+dnl assuming here that there is no compiler that groks -mtls-dialect=gnu2
+dnl but does not grok -Werror.)
save_CFLAGS="$CFLAGS"
-CFLAGS="$CFLAGS -fpic -mtls-dialect=gnu2"
+CFLAGS="$CFLAGS -Werror -fpic -mtls-dialect=gnu2"
AC_COMPILE_IFELSE([
__thread int i;
void foo (void)
# Link in zlib if we can. This allows us to write compressed sections.
AM_ZLIB
-AM_CONDITIONAL(HAVE_ZLIB, test "$ac_cv_header_zlib_h" = "yes")
dnl We have to check these in C, not C++, because autoconf generates
dnl tests which have no type information, and current glibc provides
dnl with C++.
AC_CHECK_DECLS([basename, ffs, asprintf, vasprintf, snprintf, vsnprintf, strverscmp])
+dnl Check if gcc supports the -gpubnames option.
+dnl Use -Werror in case of compilers that make unknown -g options warnings.
+dnl They would pass the test here, but fail in actual use when $WARN_CFLAGS
+dnl gets set later by default Autoconf magic to include -Werror. (We are
+dnl assuming here that there is no compiler that groks -gpubnames
+dnl but does not grok -Werror.)
+save_CFLAGS="$CFLAGS"
+CFLAGS="$CFLAGS -Werror -gpubnames"
+AC_COMPILE_IFELSE([int i;], [have_pubnames=yes], [have_pubnames=no])
+CFLAGS="$save_CFLAGS"
+AM_CONDITIONAL(HAVE_PUBNAMES, test "$have_pubnames" = "yes")
+
+dnl Check if gcc supports the -fno-use-linker-plugin option.
+save_CFLAGS="$CFLAGS"
+CFLAGS="$CFLAGS -Werror -fno-use-linker-plugin"
+AC_COMPILE_IFELSE([int i;], [have_no_use_linker_plugin=yes], [have_no_use_linker_plugin=no])
+CFLAGS="$save_CFLAGS"
+AM_CONDITIONAL(HAVE_NO_USE_LINKER_PLUGIN, test "$have_no_use_linker_plugin" = "yes")
+
AC_LANG_PUSH(C++)
+AC_CHECK_HEADERS(unordered_set unordered_map)
AC_CHECK_HEADERS(tr1/unordered_set tr1/unordered_map)
AC_CHECK_HEADERS(ext/hash_map ext/hash_set)
AC_CHECK_HEADERS(byteswap.h)
dnl When plugins enabled dynamic loader interface is required. Check headers
-dnl which may provide this interface. In case of dlfcn.h add libdl to link.
+dnl which may provide this interface. Add the necessary library to link.
AC_CHECK_HEADERS(windows.h)
-AC_CHECK_HEADERS(dlfcn.h, [DLOPEN_LIBS="-ldl"], [DLOPEN_LIBS=""])
+AC_CHECK_HEADERS(dlfcn.h)
+AC_SEARCH_LIBS(dlopen, [dl dld])
+case "$ac_cv_search_dlopen" in
+ no*) DLOPEN_LIBS="";;
+ *) DLOPEN_LIBS="$ac_cv_search_dlopen";;
+esac
AC_SUBST(DLOPEN_LIBS)
AC_CHECK_FUNCS(mallinfo posix_fallocate fallocate readv sysconf times)
[Define if struct stat has a field st_mtim with timespec for mtime])
fi
-dnl Check if gcc supports the -gpubnames option.
-save_CXXFLAGS="$CXXFLAGS"
-CXXFLAGS="$CXXFLAGS -gpubnames"
-AC_COMPILE_IFELSE([int i;], [have_pubnames=yes], [have_pubnames=no])
-CXXFLAGS="$save_CXXFLAGS"
-AM_CONDITIONAL(HAVE_PUBNAMES, test "$have_pubnames" = "yes")
-
AC_LANG_POP(C++)
AC_CHECK_HEADERS(locale.h)