binutils-gdb/gold/configure.ac

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2006-08-05 01:10:59 +02:00
dnl Process this file with autoconf to produce a configure script.
AC_PREREQ(2.59)
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AC_INIT(gold, 0.1)
AC_CONFIG_SRCDIR(gold.cc)
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AC_CANONICAL_TARGET
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AM_INIT_AUTOMAKE
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AM_CONFIG_HEADER(config.h:config.in)
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AC_ARG_WITH(sysroot,
[ --with-sysroot[=DIR] search for usr/lib et al within DIR],
[sysroot=$withval], [sysroot=no])
if test "$sysroot" = "yes"; then
sysroot='${exec_prefix}/${target_alias}/sys-root'
elif test "$sysroot" = "no"; then
sysroot=
fi
sysroot_relocatable=0
if test -n "$sysroot"; then
case "sysroot" in
"${prefix}" | "${prefix}/"* | \
"${exec_prefix}" | "${exec_prefix}/"* | \
'${prefix}' | '${prefix}/'*| \
'${exec_prefix}' | '${exec_prefix}/'*)
sysroot_relocatable=1
;;
esac
fi
AC_DEFINE_UNQUOTED(TARGET_SYSTEM_ROOT, "$sysroot",
[System root for target files])
AC_DEFINE_UNQUOTED(TARGET_SYSTEM_ROOT_RELOCATABLE, $sysroot_relocatable,
[Whether the system root can be relocated])
dnl For now threads are a configure time option.
AC_ARG_ENABLE([threads],
[ --enable-threads multi-threaded linking],
[case "${enableval}" in
yes | "") threads=yes ;;
no) threads=no ;;
*) threads=yes ;;
esac],
[threads=no])
if test "$threads" = "yes"; then
AC_DEFINE(ENABLE_THREADS, 1,
[Define to do multi-threaded linking])
fi
AM_CONDITIONAL(THREADS, test "$threads" = "yes")
AC_ARG_ENABLE([targets],
[ --enable-targets alternative target configurations],
[case "${enableval}" in
yes | "")
AC_MSG_ERROR([--enable-targets option must specify target names or 'all'])
;;
no)
enable_targets=
;;
*)
enable_targets=$enableval
;;
esac],
[# For now, enable all targets by default
enable_targets=all
])
# Canonicalize the enabled targets.
if test -n "$enable_targets"; then
for targ in `echo $enable_targets | sed -e 's/,/ /g'`; do
result=`$ac_config_sub $targ 2>/dev/null`
if test -n "$result"; then
canon_targets="$canon_targets $result"
else
# Permit unrecognized target names, like "all".
canon_targets="$canon_targets $targ"
fi
done
fi
# See which specific instantiations we need.
targetobjs=
all_targets=
default_machine=
default_size=
default_big_endian=
targ_32_little=
targ_32_big=
targ_64_little=
targ_64_big=
for targ in $target $canon_targets; do
if test "$targ" = "all"; then
targ_32_little=yes
targ_32_big=yes
targ_64_little=yes
targ_64_big=yes
all_targets=yes
else
. ${srcdir}/configure.tgt
if test "$targ_obj" = "UNKNOWN"; then
AC_MSG_ERROR("unsupported target $targ")
else
targetobjs="$targetobjs ${targ_obj}.\$(OBJEXT)"
if test "$targ_size" = "32"; then
if test "$targ_big_endian" = "false"; then
targ_32_little=yes
elif test "$targ_big_endian" = "true"; then
targ_32_big=yes
else
AC_MSG_ERROR("bad configure.tgt endian $targ_big_endian")
fi
elif test "$targ_size" = "64"; then
if test "$targ_big_endian" = "false"; then
targ_64_little=yes
elif test "$targ_big_endian" = "true"; then
targ_64_big=yes
else
AC_MSG_ERROR("bad configure.tgt endian $targ_big_endian")
fi
else
AC_MSG_ERROR("bad configure.tgt size $targ_size")
fi
if test "$target" = "$targ"; then
default_machine=$targ_machine
default_size=$targ_size
default_big_endian=$targ_big_endian
fi
fi
fi
done
if test -n "$targ_32_little"; then
AC_DEFINE(HAVE_TARGET_32_LITTLE, 1,
[Define to support 32-bit little-endian targets])
fi
if test -n "$targ_32_big"; then
AC_DEFINE(HAVE_TARGET_32_BIG, 1,
[Define to support 32-bit big-endian targets])
fi
if test -n "$targ_64_little"; then
AC_DEFINE(HAVE_TARGET_64_LITTLE, 1,
[Define to support 64-bit little-endian targets])
fi
if test -n "$targ_64_big"; then
AC_DEFINE(HAVE_TARGET_64_BIG, 1,
[Define to support 64-bit big-endian targets])
fi
if test -n "$all_targets"; then
TARGETOBJS='$(ALL_TARGETOBJS)'
else
TARGETOBJS="$targetobjs"
fi
AC_SUBST(TARGETOBJS)
AC_DEFINE_UNQUOTED(GOLD_DEFAULT_MACHINE, $default_machine,
[Default machine code])
AC_DEFINE_UNQUOTED(GOLD_DEFAULT_SIZE, $default_size,
[Default size (32 or 64)])
AC_DEFINE_UNQUOTED(GOLD_DEFAULT_BIG_ENDIAN, $default_big_endian,
[Default big endian (true or false)])
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AC_PROG_CC
AC_PROG_CXX
AC_PROG_YACC
AC_PROG_RANLIB
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AC_PROG_INSTALL
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AC_PROG_LN_S
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AC_GNU_SOURCE
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ZW_GNU_GETTEXT_SISTER_DIR
AM_PO_SUBDIRS
AC_C_BIGENDIAN
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AC_EXEEXT
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AM_CONDITIONAL(NATIVE_LINKER,
test "x$target_alias" = "x" -o "x$host_alias" = "x$target_alias")
AM_CONDITIONAL(GCC, test "$GCC" = yes)
dnl Some architectures do not support taking pointers of functions
dnl defined in shared libraries except in -fPIC mode. We need to
dnl tell the unittest framework if we're compiling for one of those
dnl targets, so it doesn't try to run the tests that do that.
AM_CONDITIONAL(FN_PTRS_IN_SO_WITHOUT_PIC, [
case $target_cpu in
i?86) true;;
x86_64) false;;
*) true;;
esac])
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dnl Test for __thread support.
AC_CACHE_CHECK([for thread support], [gold_cv_c_thread],
[AC_COMPILE_IFELSE([__thread int i = 1;],
[gold_cv_c_thread=yes], [gold_cv_c_thread=no])])
AM_CONDITIONAL(TLS, test "$gold_cv_c_thread" = "yes")
dnl On GNU/Linux TLS in static programs only works when using glibc
dnl 2.4 or later.
AC_CACHE_CHECK([for glibc >= 2.4], [gold_cv_lib_glibc24],
[AC_COMPILE_IFELSE([
#include <features.h>
#if !defined __GLIBC__
error
#elif __GLIBC__ < 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ < 4)
error
#endif
], [gold_cv_lib_glibc24=yes], [gold_cv_lib_glibc24=no])])
AM_CONDITIONAL(STATIC_TLS, test "$gold_cv_lib_glibc24" = "yes")
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2008-04-11 Cary Coutant <ccoutant@google.com> Add support for TLS descriptors for i386 and x86_64. * i386.cc (Target_i386::Relocate::tls_desc_gd_to_ie): New function. (Target_i386::Relocate::tls_desc_gd_to_le): New function. (Target_i386::Got_type): Add GOT_TYPE_TLS_NOFFSET and GOT_TYPE_TLS_DESC. (Target_i386::got_mod_index_entry): Remove unnecessary code. (Target_i386::Scan::local): Implement R_386_TLS_GOTDESC and R_386_TLS_DESC_CALL relocations. Fix problem with initial-exec relocations. (Target_i386::Scan::global): Fix problem with GD-to-IE relaxation. Implement R_386_TLS_GOTDESC and R_386_TLS_DESC_CALL relocations; Fix problem with initial-exec relocations. (Target_i386::Relocate::relocate_tls): Likewise. (Target_i386::Relocate::tls_gd_to_ie): Fix problem with GD-to-IE relaxation. * output.cc (Output_data_dynamic::Dynamic_entry::write): Add support for section-plus-offset dynamic table entries. * output.h (Output_data_dynamic::add_section_plus_offset): New function. (Output_data_dynamic::Dynamic_entry): Add support for section-plus-offset dynamic table entries. (Output_data_dynamic::Classification): Likewise. (Output_data_dynamic::classification_): Renamed offset_. * x86_64.cc (Target_x86_64::Relocate::tls_desc_gd_to_ie): New function. (Target_x86_64::Relocate::tls_desc_gd_to_le): New function. (Target_x86_64::make_plt_section): New function. (Target_x86_64::reserve_tlsdesc_entries): New function. (Output_data_plt_x86_64::Output_data_plt_x86_64): Add new parameter. (Output_data_plt_x86_64::reserve_tlsdesc_entry): New function. (Output_data_plt_x86_64::has_tlsdesc_entry): New function. (Output_data_plt_x86_64::get_tlsdesc_got_offset): New function. (Output_data_plt_x86_64::get_tlsdesc_plt_offset): New function. (Output_data_plt_x86_64::tlsdesc_plt_entry): New field. (Output_data_plt_x86_64::set_final_data_size): Move out of line; add extra PLT entry for TLS descriptors. (Output_data_plt_x86_64::got_): New field. (Output_data_plt_x86_64::tlsdesc_got_offset_): New field. (Output_data_plt_x86_64::Output_data_plt_x86_64): Initialize new fields. (Output_data_plt_x86_64::do_write): Write extra PLT entry for TLS descriptors. (Target_x86_64::make_plt_entry): Factor out make_plt_section. (Target_x86_64::got_mod_index_entry): Remove unnecessary code. (Target_x86_64::Scan::local): Implement R_386_TLS_GOTDESC and R_386_TLS_DESC_CALL relocations. (Target_x86_64::Scan::global): Likewise. (Target_x86_64::do_finalize_sections): Add dynamic table entries for TLS descriptors. (Relocate::relocate_tls): Fix problem with GD-to-IE relaxation. Implement R_386_TLS_GOTDESC and R_386_TLS_DESC_CALL relocations. (Target_x86_64::Relocate::tls_gd_to_ie): Fix problem with GD-to-IE relaxation. * configure.ac: Export new conditional variables TLS_GNU2_DIALECT and TLS_DESCRIPTORS. * Makefile.in: Rebuild. * configure: Rebuild. * testsuite/Makefile.am (tls_shared_gd_to_ie_test): New target. (tls_test_shared2.so): New target. (tls_shared_gd_to_ie_test_SOURCES): New variable. (tls_shared_gd_to_ie_test_DEPENDENCIES): New variable. (tls_shared_gd_to_ie_test_LDFLAGS): New variable. (tls_shared_gd_to_ie_test_LDADD): New variable. (tls_shared_gnu2_gd_to_ie_test): New target. (tls_test_gnu2.o, tls_test_file2_gnu2.o, tls_test_gnu2_shared2.so): New targets. (tls_shared_gnu2_gd_to_ie_test_SOURCES): New variable. (ls_shared_gnu2_gd_to_ie_test_DEPENDENCIES): New variable. (tls_shared_gnu2_gd_to_ie_test_LDFLAGS): New variable. (tls_shared_gnu2_gd_to_ie_test_LDADD): New variable. (tls_shared_gnu2_test): New target. (tls_test_gnu2_shared.so): New target. (tls_shared_gnu2_test_SOURCES): New variable. (tls_shared_gnu2_test_DEPENDENCIES): New variable. (tls_shared_gnu2_test_LDFLAGS): New variable. (tls_shared_gnu2_test_LDADD): New variable. * testsuite/Makefile.in: Rebuild. * testsuite/Makefile.
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dnl Test for the -ftls-dialect=gnu2 option.
save_CFLAGS="$CFLAGS"
CFLAGS="$CFLAGS -mtls-dialect=gnu2"
AC_COMPILE_IFELSE([int i;], [have_tls_gnu2=yes], [have_tls_gnu2=no])
CFLAGS="$save_CFLAGS"
AM_CONDITIONAL(TLS_GNU2_DIALECT, test "$have_tls_gnu2" = "yes")
dnl On GNU/Linux TLS descriptors are supported by the dynamic loader
dnl only with glibc 2.5 or later.
AC_CACHE_CHECK([for glibc >= 2.5], [gold_cv_lib_glibc25],
[AC_COMPILE_IFELSE([
#include <features.h>
#if !defined __GLIBC__
error
#elif __GLIBC__ < 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ < 5)
error
#endif
], [gold_cv_lib_glibc25=yes], [gold_cv_lib_glibc25=no])])
AM_CONDITIONAL(TLS_DESCRIPTORS, test "$gold_cv_lib_glibc25" = "yes")
* layout.cc (Layout::layout): If we see an input section with a name that needs sorting, set the must_sort flag for the output section. (Layout::make_output_section): If the name of the output section indicates that it might require sorting, set the may_sort flag. * output.h (Output_section::may_sort_attached_input_sections): New function. (Output_section::set_may_sort_attached_input_sections): New function. (Output_section::must_sort_attached_input_sections): New function. (Output_section::set_must_sort_attached_input_sections): New function. (class Output_section): Declare Input_section_sort_entry. Define Input_section_sort_compare. Declare sort_attached_input_sections. Add new fields: may_sort_attached_input_sections_, must_sort_attached_input_sections_, attached_input_sections_are_sorted_. * output.cc (Output_section::Output_section): Initialize new fields. (Output_section::add_input_section): Add an entry to input_sections_ if may_sort or must_sort are true. (Output_section::set_final_data_size): Call sort_attached_input_sections if necessary. (Output_section::Input_section_sort_entry): Define new class. (Output_section::Input_section_sort_compare::operator()): New function. (Output_section::sort_attached_input_sections): New function. * configure.ac: Check whether the compiler supports constructor priorities. Define a CONSTRUCTOR_PRIORITY automake conditional. * testsuite/initpri1.c: New file. * testsuite/Makefile.am (check_PROGRAMS): Add initpri1 if CONSTRUCTOR_PRIORITY. (initpri1_SOURCES, initpri1_DEPENDENCIES): New variables. (initpri1_LDFLAGS): New variable. * configure, Makefile.in, testsuite/Makefile.in: Rebuild.
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dnl Check whether the compiler supports constructor priorities in
dnl attributes, which were added in gcc 4.3.
AC_CACHE_CHECK([for constructor priorities], [gold_cv_c_conprio],
[AC_COMPILE_IFELSE([void f() __attribute__ ((constructor (1)));],
[gold_cv_c_conprio=yes], [gold_cv_c_conprio=no])])
AM_CONDITIONAL(CONSTRUCTOR_PRIORITY, test "$gold_cv_c_conprio" = "yes")
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AM_BINUTILS_WARNINGS
WARN_CXXFLAGS=`echo ${WARN_CFLAGS} | sed -e 's/-Wstrict-prototypes//' -e 's/-Wmissing-prototypes//'`
AC_SUBST(WARN_CXXFLAGS)
dnl Force support for large files by default. This may need to be
dnl host dependent. If build == host, we can check getconf LFS_CFLAGS.
LFS_CFLAGS="-D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64"
AC_SUBST(LFS_CFLAGS)
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AC_REPLACE_FUNCS(pread)
# Link in zlib if we can. This allows us to write compressed sections.
AC_SEARCH_LIBS(zlibVersion, z, [AC_CHECK_HEADERS(zlib.h)])
AM_CONDITIONAL(HAVE_ZLIB, test "$ac_cv_search_zlibVersion" != "no")
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AC_LANG_PUSH(C++)
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AC_CHECK_HEADERS(tr1/unordered_set tr1/unordered_map)
AC_CHECK_HEADERS(ext/hash_map ext/hash_set)
AC_CHECK_FUNCS(mallinfo)
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# gcc 4.3.0 doesn't recognize the printf attribute on a template
# function. Check for that. This is gcc bug 35546. This test can
# probably be removed after the bug has been fixed for a while.
AC_CACHE_CHECK([whether we can use attributes with template functions],
[gold_cv_template_attribute],
[AC_COMPILE_IFELSE([
template<typename T> extern void foo(const char*, ...)
__attribute__ ((__format__ (__printf__, 1, 2)));
template<typename T> void foo(const char* format, ...) {}
void bar() { foo<int>("%s\n", "foo"); }
], [gold_cv_template_attribute=yes], [gold_cv_template_attribute=no])])
if test "$gold_cv_template_attribute" = "yes"; then
AC_DEFINE(HAVE_TEMPLATE_ATTRIBUTES, 1,
[Define if attributes work on C++ templates])
fi
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AC_LANG_POP(C++)
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AM_MAINTAINER_MODE
AC_OUTPUT(Makefile testsuite/Makefile po/Makefile.in:po/Make-in)