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authorRoland McGrath <roland@gnu.org>2005-03-06 00:08:10 +0000
committerRoland McGrath <roland@gnu.org>2005-03-06 00:08:10 +0000
commit2103c260f999160d0abae3a594b8b712b3935395 (patch)
treeb9325feeb1a90539c5f26d62ce2906121b1e8526
parent3ff37e899a3fbb0c21ab6a2c5ab126b419326071 (diff)
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* sysdeps/generic/ldsodefs.h (_dl_out_of_memory_internal): Remove decl.
(_dl_out_of_memory): Use rtld_hidden_proto. * elf/dl-error.c (_dl_out_of_memory): Use rtld_hidden_data_def. (_dl_signal_error): Don't use INTUSE on _dl_out_of_memory. * elf/dl-open.c (_dl_open): Likewise. * elf/dl-deps.c (_dl_map_object_deps): Likewise. * sunrpc/des_impl.c (des_set_key): Make first argument unsigned char *. * elf/dl-addr.c (_dl_addr): Add a cast. * elf/unload3mod4.c: Declare foo. * elf/testobj2.c: Include <stdio.h>. * sysdeps/gnu/errlist.awk: Emit NERR macro for _sys_nerr_internal value constant, and use it in the defn. * sysdeps/gnu/errlist-compat.awk: Use NERR in array decl. Use actual size for compat array decls. * config.make.in (cc-mtune): New substituted variable. * configure.in (libc_cv_cc_mtune): New test for -mtune= switch, done only if libc_mtune_example is defined. * configure: Regenerated. * sysdeps/i386/configure.in (libc_mtune_example): Set it. * sysdeps/i386/configure: Regenerated. * sysdeps/i386/Makefile (CFLAGS-initfini.s): Use $(cc-mtune).
-rw-r--r--ChangeLog29
-rw-r--r--config.make.in1
-rwxr-xr-xconfigure69
-rw-r--r--configure.in16
-rw-r--r--elf/dl-addr.c3
-rw-r--r--elf/dl-deps.c4
-rw-r--r--elf/dl-error.c6
-rw-r--r--elf/dl-open.c2
-rw-r--r--elf/testobj2.c1
-rw-r--r--elf/unload3mod4.c2
-rw-r--r--linuxthreads/ChangeLog4
-rw-r--r--linuxthreads/sysdeps/i386/Makefile2
-rw-r--r--sunrpc/des_impl.c6
-rw-r--r--sysdeps/generic/ldsodefs.h5
-rw-r--r--sysdeps/gnu/errlist-compat.awk7
-rw-r--r--sysdeps/gnu/errlist.awk7
-rw-r--r--sysdeps/i386/Makefile2
-rwxr-xr-xsysdeps/i386/configure3
-rw-r--r--sysdeps/i386/configure.in3
19 files changed, 149 insertions, 23 deletions
diff --git a/ChangeLog b/ChangeLog
index 445b3ad..1aea4bb 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,32 @@
+2005-03-05 Roland McGrath <roland@redhat.com>
+
+ * sysdeps/generic/ldsodefs.h (_dl_out_of_memory_internal): Remove decl.
+ (_dl_out_of_memory): Use rtld_hidden_proto.
+ * elf/dl-error.c (_dl_out_of_memory): Use rtld_hidden_data_def.
+ (_dl_signal_error): Don't use INTUSE on _dl_out_of_memory.
+ * elf/dl-open.c (_dl_open): Likewise.
+ * elf/dl-deps.c (_dl_map_object_deps): Likewise.
+
+ * sunrpc/des_impl.c (des_set_key): Make first argument unsigned char *.
+
+ * elf/dl-addr.c (_dl_addr): Add a cast.
+
+ * elf/unload3mod4.c: Declare foo.
+ * elf/testobj2.c: Include <stdio.h>.
+
+ * sysdeps/gnu/errlist.awk: Emit NERR macro for _sys_nerr_internal
+ value constant, and use it in the defn.
+ * sysdeps/gnu/errlist-compat.awk: Use NERR in array decl.
+ Use actual size for compat array decls.
+
+ * config.make.in (cc-mtune): New substituted variable.
+ * configure.in (libc_cv_cc_mtune): New test for -mtune= switch,
+ done only if libc_mtune_example is defined.
+ * configure: Regenerated.
+ * sysdeps/i386/configure.in (libc_mtune_example): Set it.
+ * sysdeps/i386/configure: Regenerated.
+ * sysdeps/i386/Makefile (CFLAGS-initfini.s): Use $(cc-mtune).
+
2005-03-05 Jakub Jelinek <jakub@redhat.com>
* Makerules ($(inst_libdir)/libc.so): Use $(slibdir) instead of
diff --git a/config.make.in b/config.make.in
index 81cb95b..1115460 100644
--- a/config.make.in
+++ b/config.make.in
@@ -62,6 +62,7 @@ have-selinux = @have_selinux@
have-cc-with-libunwind = @libc_cv_cc_with_libunwind@
fno-unit-at-a-time = @fno_unit_at_a_time@
bind-now = @bindnow@
+cc-mtune = @cc_mtune@
static-libgcc = @libc_cv_gcc_static_libgcc@
diff --git a/configure b/configure
index 1e9e50c..f35641a 100755
--- a/configure
+++ b/configure
@@ -313,7 +313,7 @@ ac_includes_default="\
# include <unistd.h>
#endif"
-ac_subst_vars='SHELL PATH_SEPARATOR PACKAGE_NAME PACKAGE_TARNAME PACKAGE_VERSION PACKAGE_STRING PACKAGE_BUGREPORT exec_prefix prefix program_transform_name bindir sbindir libexecdir datadir sysconfdir sharedstatedir localstatedir libdir includedir oldincludedir infodir mandir build_alias host_alias target_alias DEFS ECHO_C ECHO_N ECHO_T LIBS with_fp with_cvs enable_check_abi oldest_abi bindnow force_install all_warnings build build_cpu build_vendor build_os host host_cpu host_vendor host_os subdirs add_ons base_machine sysnames INSTALL_PROGRAM INSTALL_SCRIPT INSTALL_DATA LN_S CC CFLAGS LDFLAGS CPPFLAGS ac_ct_CC OBJEXT BUILD_CC cross_compiling CPP CXX CXXFLAGS ac_ct_CXX AR OBJDUMP RANLIB ac_ct_RANLIB MIG AS LD PWD_P MAKE MSGFMT MAKEINFO SED AUTOCONF SYSINCLUDES libc_cv_gcc_static_libgcc BASH libc_cv_have_bash2 KSH libc_cv_have_ksh AWK PERL INSTALL_INFO BISON VERSIONING libc_cv_asm_protected_directive libc_cv_initfinit_array libc_cv_cc_with_libunwind libc_cv_z_nodelete libc_cv_z_nodlopen libc_cv_z_initfirst libc_cv_z_relro libc_cv_Bgroup libc_cv_libgcc_s_suffix libc_cv_as_needed ASFLAGS_config libc_cv_z_combreloc libc_cv_z_execstack libc_cv_fpie fno_unit_at_a_time libc_cv_have_initfini no_whole_archive exceptions LIBGD have_selinux EGREP sizeof_long_double libc_cv_gcc_unwind_find_fde uname_sysname uname_release uname_version old_glibc_headers libc_cv_slibdir libc_cv_localedir libc_cv_sysconfdir libc_cv_rootsbindir libc_cv_forced_unwind use_ldconfig ldd_rewrite_script gnu_ld gnu_as elf xcoff static shared pic_default profile omitfp bounded static_nss nopic_initfini DEFINES linux_doors mach_interface_list VERSION RELEASE LIBOBJS LTLIBOBJS'
+ac_subst_vars='SHELL PATH_SEPARATOR PACKAGE_NAME PACKAGE_TARNAME PACKAGE_VERSION PACKAGE_STRING PACKAGE_BUGREPORT exec_prefix prefix program_transform_name bindir sbindir libexecdir datadir sysconfdir sharedstatedir localstatedir libdir includedir oldincludedir infodir mandir build_alias host_alias target_alias DEFS ECHO_C ECHO_N ECHO_T LIBS with_fp with_cvs enable_check_abi oldest_abi bindnow force_install all_warnings build build_cpu build_vendor build_os host host_cpu host_vendor host_os subdirs add_ons base_machine sysnames INSTALL_PROGRAM INSTALL_SCRIPT INSTALL_DATA LN_S CC CFLAGS LDFLAGS CPPFLAGS ac_ct_CC OBJEXT BUILD_CC cross_compiling CPP CXX CXXFLAGS ac_ct_CXX AR OBJDUMP RANLIB ac_ct_RANLIB MIG AS LD PWD_P MAKE MSGFMT MAKEINFO SED AUTOCONF SYSINCLUDES libc_cv_gcc_static_libgcc BASH libc_cv_have_bash2 KSH libc_cv_have_ksh AWK PERL INSTALL_INFO BISON VERSIONING libc_cv_asm_protected_directive libc_cv_initfinit_array libc_cv_cc_with_libunwind libc_cv_z_nodelete libc_cv_z_nodlopen libc_cv_z_initfirst libc_cv_z_relro libc_cv_Bgroup libc_cv_libgcc_s_suffix libc_cv_as_needed ASFLAGS_config libc_cv_z_combreloc libc_cv_z_execstack libc_cv_fpie fno_unit_at_a_time libc_cv_have_initfini no_whole_archive exceptions LIBGD have_selinux EGREP sizeof_long_double libc_cv_gcc_unwind_find_fde uname_sysname uname_release uname_version old_glibc_headers libc_cv_slibdir libc_cv_localedir libc_cv_sysconfdir libc_cv_rootsbindir libc_cv_forced_unwind use_ldconfig ldd_rewrite_script gnu_ld gnu_as elf xcoff static shared pic_default cc_mtune profile omitfp bounded static_nss nopic_initfini DEFINES linux_doors mach_interface_list VERSION RELEASE LIBOBJS LTLIBOBJS'
ac_subst_files=''
# Initialize some variables set by options.
@@ -7615,6 +7615,72 @@ echo "$as_me:$LINENO: result: $pic_default" >&5
echo "${ECHO_T}$pic_default" >&6
+# This test comes after sysdeps configure fragments, so that they can
+# define the variable libc_mtune_example to tell us a valid -mtune=value
+# argument that we can test with.
+cc_mtune=-mcpu
+if test "x$libc_mtune_example" != x; then
+ echo "$as_me:$LINENO: checking if compiler supports -mtune option" >&5
+echo $ECHO_N "checking if compiler supports -mtune option... $ECHO_C" >&6
+if test "${libc_cv_cc_mtune+set}" = set; then
+ echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+ libc_cv_cc_mtune=no
+ save_CFLAGS="$CFLAGS"
+ CFLAGS="$CFLAGS -mtune=$libc_mtune_example"
+ cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h. */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h. */
+
+int
+main ()
+{
+
+ ;
+ return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+ (eval $ac_compile) 2>conftest.er1
+ ac_status=$?
+ grep -v '^ *+' conftest.er1 >conftest.err
+ rm -f conftest.er1
+ cat conftest.err >&5
+ echo "$as_me:$LINENO: \$? = $ac_status" >&5
+ (exit $ac_status); } &&
+ { ac_try='test -z "$ac_c_werror_flag"
+ || test ! -s conftest.err'
+ { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+ (eval $ac_try) 2>&5
+ ac_status=$?
+ echo "$as_me:$LINENO: \$? = $ac_status" >&5
+ (exit $ac_status); }; } &&
+ { ac_try='test -s conftest.$ac_objext'
+ { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+ (eval $ac_try) 2>&5
+ ac_status=$?
+ echo "$as_me:$LINENO: \$? = $ac_status" >&5
+ (exit $ac_status); }; }; then
+ libc_cv_cc_mtune=yes
+else
+ echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+
+fi
+echo "$as_me:$LINENO: result: $libc_cv_cc_mtune" >&5
+echo "${ECHO_T}$libc_cv_cc_mtune" >&6
+ if test "x$libc_cv_cc_mtune" = xyes; then
+ cc_mtune=-mtune
+ fi
+fi
+
@@ -8371,6 +8437,7 @@ s,@xcoff@,$xcoff,;t t
s,@static@,$static,;t t
s,@shared@,$shared,;t t
s,@pic_default@,$pic_default,;t t
+s,@cc_mtune@,$cc_mtune,;t t
s,@profile@,$profile,;t t
s,@omitfp@,$omitfp,;t t
s,@bounded@,$bounded,;t t
diff --git a/configure.in b/configure.in
index 11f78b0..6ec23d5 100644
--- a/configure.in
+++ b/configure.in
@@ -2116,6 +2116,22 @@ fi
rm -f conftest.*])
AC_SUBST(pic_default)
+# This test comes after sysdeps configure fragments, so that they can
+# define the variable libc_mtune_example to tell us a valid -mtune=value
+# argument that we can test with.
+AC_SUBST(cc_mtune)cc_mtune=-mcpu
+if test "x$libc_mtune_example" != x; then
+ AC_CACHE_CHECK(if compiler supports -mtune option, libc_cv_cc_mtune, [dnl
+ libc_cv_cc_mtune=no
+ save_CFLAGS="$CFLAGS"
+ CFLAGS="$CFLAGS -mtune=$libc_mtune_example"
+ AC_TRY_COMPILE(,,[libc_cv_cc_mtune=yes])
+ ])
+ if test "x$libc_cv_cc_mtune" = xyes; then
+ cc_mtune=-mtune
+ fi
+fi
+
AC_SUBST(profile)
AC_SUBST(omitfp)
AC_SUBST(bounded)
diff --git a/elf/dl-addr.c b/elf/dl-addr.c
index c56736c..6bd7f7b 100644
--- a/elf/dl-addr.c
+++ b/elf/dl-addr.c
@@ -68,7 +68,8 @@ _dl_addr (const void *address, Dl_info *info,
&& match->l_type == lt_executable)
info->dli_fname = _dl_argv[0];
- const ElfW(Sym) *symtab = D_PTR (match, l_info[DT_SYMTAB]);
+ const ElfW(Sym) *symtab
+ = (const ElfW(Sym) *) D_PTR (match, l_info[DT_SYMTAB]);
const char *strtab = (const char *) D_PTR (match, l_info[DT_STRTAB]);
ElfW(Word) strtabsize = match->l_info[DT_STRSZ]->d_un.d_val;
diff --git a/elf/dl-deps.c b/elf/dl-deps.c
index a1c16d7..a959930 100644
--- a/elf/dl-deps.c
+++ b/elf/dl-deps.c
@@ -1,5 +1,5 @@
/* Load the dependencies of a mapped object.
- Copyright (C) 1996-2003, 2004 Free Software Foundation, Inc.
+ Copyright (C) 1996-2003, 2004, 2005 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
@@ -307,7 +307,7 @@ _dl_map_object_deps (struct link_map *map,
{
/* We are not interested in the error message. */
assert (errstring != NULL);
- if (errstring != INTUSE(_dl_out_of_memory))
+ if (errstring != _dl_out_of_memory)
free ((char *) errstring);
/* Simply ignore this error and continue the work. */
diff --git a/elf/dl-error.c b/elf/dl-error.c
index 0ef76c8..993b7c2 100644
--- a/elf/dl-error.c
+++ b/elf/dl-error.c
@@ -1,5 +1,5 @@
/* Error handling for runtime dynamic linker.
- Copyright (C) 1995-2002,2004 Free Software Foundation, Inc.
+ Copyright (C) 1995-2002,2004,2005 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
@@ -45,7 +45,7 @@ struct catch
variable since we have to avoid freeing it and so have to enable
a pointer comparison. See below and in dlfcn/dlerror.c. */
const char _dl_out_of_memory[] = "out of memory";
-INTVARDEF(_dl_out_of_memory)
+rtld_hidden_data_def (_dl_out_of_memory)
/* This points to a function which is called when an continuable error is
@@ -95,7 +95,7 @@ _dl_signal_error (int errcode, const char *objname, const char *occation,
{
/* This is better than nothing. */
lcatch->objname = "";
- lcatch->errstring = INTUSE(_dl_out_of_memory);
+ lcatch->errstring = _dl_out_of_memory;
}
longjmp (lcatch->env, errcode ?: -1);
}
diff --git a/elf/dl-open.c b/elf/dl-open.c
index 4de2072..f1fcfbc 100644
--- a/elf/dl-open.c
+++ b/elf/dl-open.c
@@ -618,7 +618,7 @@ no more namespaces available for dlmopen()"));
memcpy (local_errstring, errstring, len_errstring);
}
- if (errstring != INTUSE(_dl_out_of_memory))
+ if (errstring != _dl_out_of_memory)
free ((char *) errstring);
assert (_dl_debug_initialize (0, args.nsid)->r_state == RT_CONSISTENT);
diff --git a/elf/testobj2.c b/elf/testobj2.c
index f00ba9f..7e4b610 100644
--- a/elf/testobj2.c
+++ b/elf/testobj2.c
@@ -1,5 +1,6 @@
#include <dlfcn.h>
#include <stdlib.h>
+#include <stdio.h>
#include "testobj.h"
diff --git a/elf/unload3mod4.c b/elf/unload3mod4.c
index 4586ff7..52f808e 100644
--- a/elf/unload3mod4.c
+++ b/elf/unload3mod4.c
@@ -1,5 +1,7 @@
#include <stdio.h>
+extern int foo (int x);
+
int
bar (int x)
{
diff --git a/linuxthreads/ChangeLog b/linuxthreads/ChangeLog
index 90ccb1b..f3531e2 100644
--- a/linuxthreads/ChangeLog
+++ b/linuxthreads/ChangeLog
@@ -1,3 +1,7 @@
+2005-03-05 Roland McGrath <roland@redhat.com>
+
+ * sysdeps/i386/Makefile (CFLAGS-initfini.s): Use $(cc-mtune).
+
2005-03-05 Jakub Jelinek <jakub@redhat.com>
* sysdeps/powerpc/tcb-offsets.sym (thread_offsetof): Rework for GCC 4.
diff --git a/linuxthreads/sysdeps/i386/Makefile b/linuxthreads/sysdeps/i386/Makefile
index 418fa5c..70124b3 100644
--- a/linuxthreads/sysdeps/i386/Makefile
+++ b/linuxthreads/sysdeps/i386/Makefile
@@ -1,7 +1,7 @@
ifeq ($(subdir),linuxthreads)
# On i686 we must avoid generating the trampoline functions generated
# to get the GOT pointer.
-CFLAGS-pt-initfini.s += -march=i386 -mcpu=i386
+CFLAGS-pt-initfini.s += -march=i386 $(cc-mtune)=i386
# Most files must not be compiled without frame pointer since we need
# the frame base address which is stored in %ebp unless the frame pointer
diff --git a/sunrpc/des_impl.c b/sunrpc/des_impl.c
index 702bd02..d0004b9 100644
--- a/sunrpc/des_impl.c
+++ b/sunrpc/des_impl.c
@@ -391,14 +391,14 @@ static const unsigned long des_skb[8][64] =
static const char shifts2[16] =
{0, 0, 1, 1, 1, 1, 1, 1, 0, 1, 1, 1, 1, 1, 1, 0};
-static void des_set_key (char *, unsigned long *) internal_function;
+static void des_set_key (unsigned char *, unsigned long *) internal_function;
static void des_encrypt (unsigned long *, unsigned long *, int)
internal_function;
int _des_crypt (char *, unsigned, struct desparams *);
static void
internal_function
-des_set_key (char *key, unsigned long *schedule)
+des_set_key (unsigned char *key, unsigned long *schedule)
{
register unsigned long c, d, t, s;
register unsigned char *in;
@@ -406,7 +406,7 @@ des_set_key (char *key, unsigned long *schedule)
register int i;
k = (unsigned long *) schedule;
- in = (unsigned char *) key;
+ in = key;
c2l (in, c);
c2l (in, d);
diff --git a/sysdeps/generic/ldsodefs.h b/sysdeps/generic/ldsodefs.h
index 08039e1..a3cef20 100644
--- a/sysdeps/generic/ldsodefs.h
+++ b/sysdeps/generic/ldsodefs.h
@@ -694,10 +694,7 @@ extern char **_dl_argv_internal attribute_hidden
/* The array with message we print as a last resort. */
extern const char _dl_out_of_memory[];
-#ifdef IS_IN_rtld
-/* XXX #ifdef should go away. */
-extern const char _dl_out_of_memory_internal[] attribute_hidden;
-#endif
+rtld_hidden_proto (_dl_out_of_memory)
/* Flag set at startup and cleared when the last initializer has run. */
extern int _dl_starting_up;
diff --git a/sysdeps/gnu/errlist-compat.awk b/sysdeps/gnu/errlist-compat.awk
index db827f3..f357232 100644
--- a/sysdeps/gnu/errlist-compat.awk
+++ b/sysdeps/gnu/errlist-compat.awk
@@ -90,7 +90,7 @@ END {
n = vcount[old];
printf "#if SHLIB_COMPAT (libc, %s, %s)\n", old, new;
printf "# include <bits/wordsize.h>\n";
- printf "extern const char *const __sys_errlist_%s[];\n", old;
+ printf "extern const char *const __sys_errlist_%s[%d];\n", old, n;
printf "const int __sys_nerr_%s = %d;\n", old, n;
printf "strong_alias (_sys_errlist_internal, __sys_errlist_%s)\n", old;
printf "declare_symbol (__sys_errlist_%s, object, __WORDSIZE/8*%d)\n", \
@@ -99,7 +99,7 @@ END {
old, old;
printf "compat_symbol (libc, __sys_nerr_%s, sys_nerr, %s);\n", old, old;
- printf "extern const char *const ___sys_errlist_%s[];\n", old;
+ printf "extern const char *const ___sys_errlist_%s[%d];\n", old, n;
printf "extern const int __sys_nerr_%s;\n", old;
printf "strong_alias (__sys_errlist_%s, ___sys_errlist_%s)\n", old, old;
printf "strong_alias (__sys_nerr_%s, ___sys_nerr_%s)\n", old, old;
@@ -110,10 +110,11 @@ END {
}
printf "\
-extern const char *const __sys_errlist_internal[];\n\
+extern const char *const __sys_errlist_internal[NERR];\n\
extern const int __sys_nerr_internal;\n\
strong_alias (_sys_errlist_internal, __sys_errlist_internal)\n\
strong_alias (_sys_nerr_internal, __sys_nerr_internal)\n\
+extern const char *const sys_errlist[NERR];\n\
versioned_symbol (libc, _sys_errlist_internal, sys_errlist, %s);\n\
versioned_symbol (libc, __sys_errlist_internal, _sys_errlist, %s);\n\
versioned_symbol (libc, _sys_nerr_internal, sys_nerr, %s);\n\
diff --git a/sysdeps/gnu/errlist.awk b/sysdeps/gnu/errlist.awk
index 3f074ed..365ac81 100644
--- a/sysdeps/gnu/errlist.awk
+++ b/sysdeps/gnu/errlist.awk
@@ -1,4 +1,4 @@
-# Copyright (C) 1991-1999,2002,2004 Free Software Foundation, Inc.
+# Copyright (C) 1991-1999,2002,2004,2005 Free Software Foundation, Inc.
# This file is part of the GNU C Library.
# The GNU C Library is free software; you can redistribute it and/or
@@ -106,8 +106,9 @@ errnoh == 4 \
END {
print " };";
print "";
- print "const int _sys_nerr_internal";
- print " = sizeof _sys_errlist_internal / sizeof _sys_errlist_internal [0];";
+ print "#define NERR \\";
+ print " (sizeof _sys_errlist_internal / sizeof _sys_errlist_internal [0])";
+ print "const int _sys_nerr_internal = NERR;"
print "";
print "#if !defined NOT_IN_libc && !ERRLIST_NO_COMPAT";
print "# include <errlist-compat.c>";
diff --git a/sysdeps/i386/Makefile b/sysdeps/i386/Makefile
index ece94f3..24d09c7 100644
--- a/sysdeps/i386/Makefile
+++ b/sysdeps/i386/Makefile
@@ -8,7 +8,7 @@ long-double-fcts = yes
ifeq ($(subdir),csu)
# On i686 we must avoid generating the trampoline functions generated
# to get the GOT pointer.
-CFLAGS-initfini.s += -march=i386 -mcpu=i386
+CFLAGS-initfini.s += -march=i386 $(cc-mtune)=i386
endif
ifeq ($(subdir),gmon)
diff --git a/sysdeps/i386/configure b/sysdeps/i386/configure
index d1d4dc1..ecba166 100755
--- a/sysdeps/i386/configure
+++ b/sysdeps/i386/configure
@@ -52,3 +52,6 @@ if test $libc_cv_cpp_asm_debuginfo = yes; then
_ACEOF
fi
+
+# Tell top-level configure to try -mtune=i386.
+libc_mtune_example=i386
diff --git a/sysdeps/i386/configure.in b/sysdeps/i386/configure.in
index 028e1ae..93b62b6 100644
--- a/sysdeps/i386/configure.in
+++ b/sysdeps/i386/configure.in
@@ -33,3 +33,6 @@ rm -f conftest*])AC_SUBST(libc_cv_cpp_asm_debuginfo)
if test $libc_cv_cpp_asm_debuginfo = yes; then
AC_DEFINE(HAVE_CPP_ASM_DEBUGINFO)
fi
+
+# Tell top-level configure to try -mtune=i386.
+libc_mtune_example=i386