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-rw-r--r--ChangeLog35
-rw-r--r--config.make.in1
-rwxr-xr-xconfigure542
-rw-r--r--configure.in20
-rw-r--r--elf/Makefile21
-rw-r--r--elf/tst-execstack-mod.c30
-rw-r--r--elf/tst-execstack-needed.c36
-rw-r--r--elf/tst-execstack.c133
-rw-r--r--sysdeps/i386/dl-machine.h11
9 files changed, 683 insertions, 146 deletions
diff --git a/ChangeLog b/ChangeLog
index c05bc4ebe2..528df36a49 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,38 @@
+2003-09-23 Roland McGrath <roland@redhat.com>
+
+ * sysdeps/i386/dl-machine.h (RTLD_START): Set __libc_stack_end before
+ calling _dl_start, using GOTOFF access.
+
+ * configure.in (libc_cv_z_execstack): New check.
+ * configure: Regenerated.
+ * config.make.in (have-z-execstack): New variable set by it.
+ * elf/tst-execstack.c: New file.
+ * elf/tst-execstack-mod.c: New file.
+ * elf/tst-execstack-needed.c: New file.
+ * elf/Makefile (tests-execstack-yes, modules-execstack-yes): New
+ variables.
+ (tests, modules-names): Conditionally include them.
+ (distribute): Add tst-execstack-mod.c here.
+ ($(objpfx)tst-execstack, $(objpfx)tst-execstack.out): New targets.
+ (LDFLAGS-tst-execstack, LDFLAGS-tst-execstack-mod): New variables.
+ ($(objpfx)tst-execstack-needed): New target.
+ (LDFLAGS-tst-execstack-needed): New variable.
+
+ * sysdeps/generic/ldsodefs.h (struct rtld_global): Add _dl_stack_flags
+ and _dl_make_stack_executable_hook. Declare _dl_make_stack_executable.
+ * elf/rtld.c (_rtld_global): Add initializer for _dl_stack_flags.
+ (dl_main): Reset _dl_stack_flags according to PT_GNU_STACK phdr.
+ Initialize _dl_make_stack_executable_hook.
+ * elf/dl-support.c: Define those new variables.
+ (_dl_non_dynamic_init): Scan phdrs for PT_GNU_STACK.
+ (_dl_phdr): Fix type.
+ * elf/dl-load.c (_dl_map_object_from_fd): Grok PT_GNU_STACK phdr and
+ enable execute permission for the stack if necessary.
+ * sysdeps/generic/dl-execstack.c: New file.
+ * elf/Makefile (dl-routines): Add it.
+ * elf/Versions (ld: GLIBC_PRIVATE): Add _dl_make_stack_executable.
+ * sysdeps/unix/sysv/linux/dl-execstack.c: New file.
+
2003-09-23 Ulrich Drepper <drepper@redhat.com>
* sysdeps/posix/sprofil.c (pc_to_index): Remove inline marker.
diff --git a/config.make.in b/config.make.in
index 71ccf7131a..21d01f9bc6 100644
--- a/config.make.in
+++ b/config.make.in
@@ -42,6 +42,7 @@ have-z-nodelete = @libc_cv_z_nodelete@
have-z-nodlopen = @libc_cv_z_nodlopen@
have-z-initfirst = @libc_cv_z_initfirst@
have-z-combreloc = @libc_cv_z_combreloc@
+have-z-execstack = @libc_cv_z_execstack@
have-initfini = @libc_cv_have_initfini@
have-Bgroup = @libc_cv_Bgroup@
need-nopic-initfini = @nopic_initfini@
diff --git a/configure b/configure
index 2087db5046..6f8d6c8dce 100755
--- a/configure
+++ b/configure
@@ -1,7 +1,7 @@
#! /bin/sh
# From configure.in CVSid.
# Guess values for system-dependent variables and create Makefiles.
-# Generated by GNU Autoconf 2.54 for GNU C Library (see version.h).
+# Generated by GNU Autoconf 2.57 for GNU C Library (see version.h).
#
# Report bugs to <glibc>.
#
@@ -39,7 +39,10 @@ PS2='> '
PS4='+ '
# NLS nuisances.
-for as_var in LANG LANGUAGE LC_ALL LC_COLLATE LC_CTYPE LC_NUMERIC LC_MESSAGES LC_TIME
+for as_var in \
+ LANG LANGUAGE LC_ADDRESS LC_ALL LC_COLLATE LC_CTYPE LC_IDENTIFICATION \
+ LC_MEASUREMENT LC_MESSAGES LC_MONETARY LC_NAME LC_NUMERIC LC_PAPER \
+ LC_TELEPHONE LC_TIME
do
if (set +x; test -n "`(eval $as_var=C; export $as_var) 2>&1`"); then
eval $as_var=C; export $as_var
@@ -85,15 +88,15 @@ as_cr_alnum=$as_cr_Letters$as_cr_digits
# The user is always right.
if test "${PATH_SEPARATOR+set}" != set; then
- echo "#! /bin/sh" >conftest.sh
- echo "exit 0" >>conftest.sh
- chmod +x conftest.sh
- if (PATH="/nonexistent;."; conftest.sh) >/dev/null 2>&1; then
+ echo "#! /bin/sh" >conf$$.sh
+ echo "exit 0" >>conf$$.sh
+ chmod +x conf$$.sh
+ if (PATH="/nonexistent;."; conf$$.sh) >/dev/null 2>&1; then
PATH_SEPARATOR=';'
else
PATH_SEPARATOR=:
fi
- rm -f conftest.sh
+ rm -f conf$$.sh
fi
@@ -309,7 +312,7 @@ 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 subdirs force_install all_warnings build build_cpu build_vendor build_os host host_cpu host_vendor host_os 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 CCVERSION SYSINCLUDES libc_cv_gcc_static_libgcc BASH libc_cv_have_bash2 KSH libc_cv_have_ksh AWK PERL INSTALL_INFO OLD_DEBIAN_INSTALL_INFO BISON VERSIONING libc_cv_asm_protected_directive libc_cv_initfinit_array libc_cv_z_nodelete libc_cv_z_nodlopen libc_cv_z_initfirst libc_cv_Bgroup ASFLAGS_config libc_cv_z_combreloc libc_cv_have_initfini libc_cv_cpp_asm_debuginfo no_whole_archive exceptions LIBGD 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 subdirs force_install all_warnings build build_cpu build_vendor build_os host host_cpu host_vendor host_os 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 CCVERSION SYSINCLUDES libc_cv_gcc_static_libgcc BASH libc_cv_have_bash2 KSH libc_cv_have_ksh AWK PERL INSTALL_INFO OLD_DEBIAN_INSTALL_INFO BISON VERSIONING libc_cv_asm_protected_directive libc_cv_initfinit_array libc_cv_z_nodelete libc_cv_z_nodlopen libc_cv_z_initfirst libc_cv_Bgroup ASFLAGS_config libc_cv_z_combreloc libc_cv_z_execstack libc_cv_have_initfini libc_cv_cpp_asm_debuginfo no_whole_archive exceptions LIBGD 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_files=''
# Initialize some variables set by options.
@@ -976,7 +979,7 @@ test -n "$ac_init_help" && exit 0
if $ac_init_version; then
cat <<\_ACEOF
GNU C Library configure (see version.h)
-generated by GNU Autoconf 2.54
+generated by GNU Autoconf 2.57
Copyright 1992, 1993, 1994, 1995, 1996, 1998, 1999, 2000, 2001, 2002
Free Software Foundation, Inc.
@@ -991,7 +994,7 @@ This file contains any messages produced by compilers while
running configure, to aid debugging if configure makes a mistake.
It was created by GNU C Library $as_me (see version.h), which was
-generated by GNU Autoconf 2.54. Invocation command line was
+generated by GNU Autoconf 2.57. Invocation command line was
$ $0 $@
@@ -1043,24 +1046,54 @@ _ACEOF
# Keep a trace of the command line.
# Strip out --no-create and --no-recursion so they do not pile up.
+# Strip out --silent because we don't want to record it for future runs.
# Also quote any args containing shell meta-characters.
+# Make two passes to allow for proper duplicate-argument suppression.
ac_configure_args=
+ac_configure_args0=
+ac_configure_args1=
ac_sep=
-for ac_arg
+ac_must_keep_next=false
+for ac_pass in 1 2
do
- case $ac_arg in
- -no-create | --no-create | --no-creat | --no-crea | --no-cre \
- | --no-cr | --no-c | -n ) continue ;;
- -no-recursion | --no-recursion | --no-recursio | --no-recursi \
- | --no-recurs | --no-recur | --no-recu | --no-rec | --no-re | --no-r)
- continue ;;
- *" "*|*" "*|*[\[\]\~\#\$\^\&\*\(\)\{\}\\\|\;\<\>\?\"\']*)
- ac_arg=`echo "$ac_arg" | sed "s/'/'\\\\\\\\''/g"` ;;
- esac
- ac_configure_args="$ac_configure_args$ac_sep'$ac_arg'"
- # Get rid of the leading space.
- ac_sep=" "
+ for ac_arg
+ do
+ case $ac_arg in
+ -no-create | --no-c* | -n | -no-recursion | --no-r*) continue ;;
+ -q | -quiet | --quiet | --quie | --qui | --qu | --q \
+ | -silent | --silent | --silen | --sile | --sil)
+ continue ;;
+ *" "*|*" "*|*[\[\]\~\#\$\^\&\*\(\)\{\}\\\|\;\<\>\?\"\']*)
+ ac_arg=`echo "$ac_arg" | sed "s/'/'\\\\\\\\''/g"` ;;
+ esac
+ case $ac_pass in
+ 1) ac_configure_args0="$ac_configure_args0 '$ac_arg'" ;;
+ 2)
+ ac_configure_args1="$ac_configure_args1 '$ac_arg'"
+ if test $ac_must_keep_next = true; then
+ ac_must_keep_next=false # Got value, back to normal.
+ else
+ case $ac_arg in
+ *=* | --config-cache | -C | -disable-* | --disable-* \
+ | -enable-* | --enable-* | -gas | --g* | -nfp | --nf* \
+ | -q | -quiet | --q* | -silent | --sil* | -v | -verb* \
+ | -with-* | --with-* | -without-* | --without-* | --x)
+ case "$ac_configure_args0 " in
+ "$ac_configure_args1"*" '$ac_arg' "* ) continue ;;
+ esac
+ ;;
+ -* ) ac_must_keep_next=true ;;
+ esac
+ fi
+ ac_configure_args="$ac_configure_args$ac_sep'$ac_arg'"
+ # Get rid of the leading space.
+ ac_sep=" "
+ ;;
+ esac
+ done
done
+$as_unset ac_configure_args0 || test "${ac_configure_args0+set}" != set || { ac_configure_args0=; export ac_configure_args0; }
+$as_unset ac_configure_args1 || test "${ac_configure_args1+set}" != set || { ac_configure_args1=; export ac_configure_args1; }
# When interrupted or exit'd, cleanup temporary files, and complete
# config.log. We remove comments because anyway the quotes in there
@@ -2492,8 +2525,10 @@ fi
fi
-test -z "$CC" && { { echo "$as_me:$LINENO: error: no acceptable C compiler found in \$PATH" >&5
-echo "$as_me: error: no acceptable C compiler found in \$PATH" >&2;}
+test -z "$CC" && { { echo "$as_me:$LINENO: error: no acceptable C compiler found in \$PATH
+See \`config.log' for more details." >&5
+echo "$as_me: error: no acceptable C compiler found in \$PATH
+See \`config.log' for more details." >&2;}
{ (exit 1); exit 1; }; }
# Provide some information about the compiler.
@@ -2524,7 +2559,11 @@ if test "${ac_cv_objext+set}" = set; then
else
cat >conftest.$ac_ext <<_ACEOF
#line $LINENO "configure"
-#include "confdefs.h"
+/* confdefs.h. */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h. */
int
main ()
@@ -2549,9 +2588,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
done
else
echo "$as_me: failed program was:" >&5
-cat conftest.$ac_ext >&5
-{ { echo "$as_me:$LINENO: error: cannot compute suffix of object files: cannot compile" >&5
-echo "$as_me: error: cannot compute suffix of object files: cannot compile" >&2;}
+sed 's/^/| /' conftest.$ac_ext >&5
+
+{ { echo "$as_me:$LINENO: error: cannot compute suffix of object files: cannot compile
+See \`config.log' for more details." >&5
+echo "$as_me: error: cannot compute suffix of object files: cannot compile
+See \`config.log' for more details." >&2;}
{ (exit 1); exit 1; }; }
fi
@@ -2568,7 +2610,11 @@ if test "${ac_cv_c_compiler_gnu+set}" = set; then
else
cat >conftest.$ac_ext <<_ACEOF
#line $LINENO "configure"
-#include "confdefs.h"
+/* confdefs.h. */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h. */
int
main ()
@@ -2596,7 +2642,8 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
ac_compiler_gnu=yes
else
echo "$as_me: failed program was:" >&5
-cat conftest.$ac_ext >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
ac_compiler_gnu=no
fi
rm -f conftest.$ac_objext conftest.$ac_ext
@@ -2616,7 +2663,11 @@ if test "${ac_cv_prog_cc_g+set}" = set; then
else
cat >conftest.$ac_ext <<_ACEOF
#line $LINENO "configure"
-#include "confdefs.h"
+/* confdefs.h. */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h. */
int
main ()
@@ -2641,7 +2692,8 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
ac_cv_prog_cc_g=yes
else
echo "$as_me: failed program was:" >&5
-cat conftest.$ac_ext >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
ac_cv_prog_cc_g=no
fi
rm -f conftest.$ac_objext conftest.$ac_ext
@@ -2672,7 +2724,11 @@ else
ac_save_CC=$CC
cat >conftest.$ac_ext <<_ACEOF
#line $LINENO "configure"
-#include "confdefs.h"
+/* confdefs.h. */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h. */
#include <stdarg.h>
#include <stdio.h>
#include <sys/types.h>
@@ -2735,7 +2791,8 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
break
else
echo "$as_me: failed program was:" >&5
-cat conftest.$ac_ext >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
fi
rm -f conftest.$ac_objext
done
@@ -2786,7 +2843,11 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
do
cat >conftest.$ac_ext <<_ACEOF
#line $LINENO "configure"
-#include "confdefs.h"
+/* confdefs.h. */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h. */
#include <stdlib.h>
$ac_declaration
int
@@ -2812,13 +2873,18 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
:
else
echo "$as_me: failed program was:" >&5
-cat conftest.$ac_ext >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
continue
fi
rm -f conftest.$ac_objext conftest.$ac_ext
cat >conftest.$ac_ext <<_ACEOF
#line $LINENO "configure"
-#include "confdefs.h"
+/* confdefs.h. */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h. */
$ac_declaration
int
main ()
@@ -2843,7 +2909,8 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
break
else
echo "$as_me: failed program was:" >&5
-cat conftest.$ac_ext >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
fi
rm -f conftest.$ac_objext conftest.$ac_ext
done
@@ -2856,7 +2923,8 @@ fi
else
echo "$as_me: failed program was:" >&5
-cat conftest.$ac_ext >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
fi
rm -f conftest.$ac_objext conftest.$ac_ext
ac_ext=c
@@ -2931,12 +2999,22 @@ for ac_c_preproc_warn_flag in '' yes
do
# Use a header file that comes with gcc, so configuring glibc
# with a fresh cross-compiler works.
+ # Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+ # <limits.h> exists even on freestanding compilers.
# On the NeXT, cc -E runs the code through the compiler's parser,
# not just through cpp. "Syntax error" is here to catch this case.
cat >conftest.$ac_ext <<_ACEOF
#line $LINENO "configure"
-#include "confdefs.h"
-#include <assert.h>
+/* confdefs.h. */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h. */
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
Syntax error
_ACEOF
if { (eval echo "$as_me:$LINENO: \"$ac_cpp conftest.$ac_ext\"") >&5
@@ -2959,7 +3037,8 @@ if test -z "$ac_cpp_err"; then
:
else
echo "$as_me: failed program was:" >&5
- cat conftest.$ac_ext >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
# Broken: fails on valid input.
continue
fi
@@ -2969,7 +3048,11 @@ rm -f conftest.err conftest.$ac_ext
# can be detected and how.
cat >conftest.$ac_ext <<_ACEOF
#line $LINENO "configure"
-#include "confdefs.h"
+/* confdefs.h. */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h. */
#include <ac_nonexistent.h>
_ACEOF
if { (eval echo "$as_me:$LINENO: \"$ac_cpp conftest.$ac_ext\"") >&5
@@ -2993,7 +3076,8 @@ if test -z "$ac_cpp_err"; then
continue
else
echo "$as_me: failed program was:" >&5
- cat conftest.$ac_ext >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
# Passes both tests.
ac_preproc_ok=:
break
@@ -3022,12 +3106,22 @@ for ac_c_preproc_warn_flag in '' yes
do
# Use a header file that comes with gcc, so configuring glibc
# with a fresh cross-compiler works.
+ # Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+ # <limits.h> exists even on freestanding compilers.
# On the NeXT, cc -E runs the code through the compiler's parser,
# not just through cpp. "Syntax error" is here to catch this case.
cat >conftest.$ac_ext <<_ACEOF
#line $LINENO "configure"
-#include "confdefs.h"
-#include <assert.h>
+/* confdefs.h. */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h. */
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
Syntax error
_ACEOF
if { (eval echo "$as_me:$LINENO: \"$ac_cpp conftest.$ac_ext\"") >&5
@@ -3050,7 +3144,8 @@ if test -z "$ac_cpp_err"; then
:
else
echo "$as_me: failed program was:" >&5
- cat conftest.$ac_ext >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
# Broken: fails on valid input.
continue
fi
@@ -3060,7 +3155,11 @@ rm -f conftest.err conftest.$ac_ext
# can be detected and how.
cat >conftest.$ac_ext <<_ACEOF
#line $LINENO "configure"
-#include "confdefs.h"
+/* confdefs.h. */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h. */
#include <ac_nonexistent.h>
_ACEOF
if { (eval echo "$as_me:$LINENO: \"$ac_cpp conftest.$ac_ext\"") >&5
@@ -3084,7 +3183,8 @@ if test -z "$ac_cpp_err"; then
continue
else
echo "$as_me: failed program was:" >&5
- cat conftest.$ac_ext >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
# Passes both tests.
ac_preproc_ok=:
break
@@ -3097,8 +3197,10 @@ rm -f conftest.err conftest.$ac_ext
if $ac_preproc_ok; then
:
else
- { { echo "$as_me:$LINENO: error: C preprocessor \"$CPP\" fails sanity check" >&5
-echo "$as_me: error: C preprocessor \"$CPP\" fails sanity check" >&2;}
+ { { echo "$as_me:$LINENO: error: C preprocessor \"$CPP\" fails sanity check
+See \`config.log' for more details." >&5
+echo "$as_me: error: C preprocessor \"$CPP\" fails sanity check
+See \`config.log' for more details." >&2;}
{ (exit 1); exit 1; }; }
fi
@@ -3229,7 +3331,11 @@ if test "${ac_cv_cxx_compiler_gnu+set}" = set; then
else
cat >conftest.$ac_ext <<_ACEOF
#line $LINENO "configure"
-#include "confdefs.h"
+/* confdefs.h. */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h. */
int
main ()
@@ -3257,7 +3363,8 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
ac_compiler_gnu=yes
else
echo "$as_me: failed program was:" >&5
-cat conftest.$ac_ext >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
ac_compiler_gnu=no
fi
rm -f conftest.$ac_objext conftest.$ac_ext
@@ -3277,7 +3384,11 @@ if test "${ac_cv_prog_cxx_g+set}" = set; then
else
cat >conftest.$ac_ext <<_ACEOF
#line $LINENO "configure"
-#include "confdefs.h"
+/* confdefs.h. */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h. */
int
main ()
@@ -3302,7 +3413,8 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
ac_cv_prog_cxx_g=yes
else
echo "$as_me: failed program was:" >&5
-cat conftest.$ac_ext >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
ac_cv_prog_cxx_g=no
fi
rm -f conftest.$ac_objext conftest.$ac_ext
@@ -3335,7 +3447,11 @@ for ac_declaration in \
do
cat >conftest.$ac_ext <<_ACEOF
#line $LINENO "configure"
-#include "confdefs.h"
+/* confdefs.h. */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h. */
#include <stdlib.h>
$ac_declaration
int
@@ -3361,13 +3477,18 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
:
else
echo "$as_me: failed program was:" >&5
-cat conftest.$ac_ext >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
continue
fi
rm -f conftest.$ac_objext conftest.$ac_ext
cat >conftest.$ac_ext <<_ACEOF
#line $LINENO "configure"
-#include "confdefs.h"
+/* confdefs.h. */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h. */
$ac_declaration
int
main ()
@@ -3392,7 +3513,8 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
break
else
echo "$as_me: failed program was:" >&5
-cat conftest.$ac_ext >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
fi
rm -f conftest.$ac_objext conftest.$ac_ext
done
@@ -4540,7 +4662,11 @@ if test "${libc_cv_friendly_stddef+set}" = set; then
else
cat >conftest.$ac_ext <<_ACEOF
#line $LINENO "configure"
-#include "confdefs.h"
+/* confdefs.h. */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h. */
#define __need_size_t
#define __need_wchar_t
#include <stddef.h>
@@ -4573,7 +4699,8 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
libc_cv_friendly_stddef=yes
else
echo "$as_me: failed program was:" >&5
-cat conftest.$ac_ext >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
libc_cv_friendly_stddef=no
fi
rm -f conftest.$ac_objext conftest.$ac_ext
@@ -5260,6 +5387,7 @@ echo "${ECHO_T}$libc_cv_as_noexecstack" >&6
ASFLAGS_config="$ASFLAGS_config -Wa,--noexecstack"
fi
+
echo "$as_me:$LINENO: checking for -z combreloc" >&5
echo $ECHO_N "checking for -z combreloc... $ECHO_C" >&6
if test "${libc_cv_z_combreloc+set}" = set; then
@@ -5298,8 +5426,36 @@ echo "${ECHO_T}$libc_cv_z_combreloc" >&6
_ACEOF
fi
+
+
+ echo "$as_me:$LINENO: checking for -z execstack" >&5
+echo $ECHO_N "checking for -z execstack... $ECHO_C" >&6
+if test "${libc_cv_z_execstack+set}" = set; then
+ echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+ cat > conftest.c <<EOF
+int _start (void) { return 42; }
+EOF
+ if { ac_try='${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS
+ -shared -o conftest.so conftest.c
+ -Wl,-z,execstack -nostdlib
+ 1>&5'
+ { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+ (eval $ac_try) 2>&5
+ ac_status=$?
+ echo "$as_me:$LINENO: \$? = $ac_status" >&5
+ (exit $ac_status); }; }
+ then
+ libc_cv_z_execstack=yes
+ else
+ libc_cv_z_execstack=no
+ fi
+ rm -f conftest*
fi
+echo "$as_me:$LINENO: result: $libc_cv_z_execstack" >&5
+echo "${ECHO_T}$libc_cv_z_execstack" >&6
+fi
if test $elf != yes; then
echo "$as_me:$LINENO: checking for .init and .fini sections" >&5
@@ -5309,7 +5465,11 @@ if test "${libc_cv_have_initfini+set}" = set; then
else
cat >conftest.$ac_ext <<_ACEOF
#line $LINENO "configure"
-#include "confdefs.h"
+/* confdefs.h. */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h. */
int
main ()
@@ -5336,7 +5496,8 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
libc_cv_have_initfini=yes
else
echo "$as_me: failed program was:" >&5
-cat conftest.$ac_ext >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
libc_cv_have_initfini=no
fi
rm -f conftest.$ac_objext conftest.$ac_ext
@@ -5396,7 +5557,11 @@ if test "${libc_cv_asm_underscores+set}" = set; then
else
cat >conftest.$ac_ext <<_ACEOF
#line $LINENO "configure"
-#include "confdefs.h"
+/* confdefs.h. */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h. */
asm ("_glibc_foobar:");
int
main ()
@@ -5421,7 +5586,8 @@ if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
libc_cv_asm_underscores=yes
else
echo "$as_me: failed program was:" >&5
-cat conftest.$ac_ext >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
libc_cv_asm_underscores=no
fi
rm -f conftest.$ac_objext conftest$ac_exeext conftest.$ac_ext
@@ -5745,7 +5911,11 @@ if test "${libc_cv_c_asmcr0_bug+set}" = set; then
else
cat >conftest.$ac_ext <<_ACEOF
#line $LINENO "configure"
-#include "confdefs.h"
+/* confdefs.h. */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h. */
int tester(int x) { asm ("" : : : "cc"); return x & 123; }
int
main ()
@@ -5770,7 +5940,8 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
libc_cv_c_asmcr0_bug='no'
else
echo "$as_me: failed program was:" >&5
-cat conftest.$ac_ext >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
libc_cv_c_asmcr0_bug='yes'
fi
rm -f conftest.$ac_objext conftest.$ac_ext
@@ -6098,7 +6269,11 @@ if test "$with_gd" != "no"; then
LIBS="$LIBS -lgd -lpng -lz -lm"
cat >conftest.$ac_ext <<_ACEOF
#line $LINENO "configure"
-#include "confdefs.h"
+/* confdefs.h. */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h. */
#include <gd.h>
int
main ()
@@ -6123,7 +6298,8 @@ if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
LIBGD=yes
else
echo "$as_me: failed program was:" >&5
-cat conftest.$ac_ext >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
LIBGD=no
fi
rm -f conftest.$ac_objext conftest$ac_exeext conftest.$ac_ext
@@ -6160,43 +6336,54 @@ if test "${ac_cv_header_stdc+set}" = set; then
else
cat >conftest.$ac_ext <<_ACEOF
#line $LINENO "configure"
-#include "confdefs.h"
+/* confdefs.h. */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h. */
#include <stdlib.h>
#include <stdarg.h>
#include <string.h>
#include <float.h>
+int
+main ()
+{
+
+ ;
+ return 0;
+}
_ACEOF
-if { (eval echo "$as_me:$LINENO: \"$ac_cpp conftest.$ac_ext\"") >&5
- (eval $ac_cpp conftest.$ac_ext) 2>conftest.er1
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+ (eval $ac_compile) 2>&5
ac_status=$?
- grep -v '^ *+' conftest.er1 >conftest.err
- rm -f conftest.er1
- cat conftest.err >&5
echo "$as_me:$LINENO: \$? = $ac_status" >&5
- (exit $ac_status); } >/dev/null; then
- if test -s conftest.err; then
- ac_cpp_err=$ac_c_preproc_warn_flag
- else
- ac_cpp_err=
- fi
-else
- ac_cpp_err=yes
-fi
-if test -z "$ac_cpp_err"; then
+ (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 $ac_status); }; }; then
ac_cv_header_stdc=yes
else
echo "$as_me: failed program was:" >&5
- cat conftest.$ac_ext >&5
- ac_cv_header_stdc=no
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_cv_header_stdc=no
fi
-rm -f conftest.err conftest.$ac_ext
+rm -f conftest.$ac_objext conftest.$ac_ext
if test $ac_cv_header_stdc = yes; then
# SunOS 4.x string.h does not declare mem*, contrary to ANSI.
cat >conftest.$ac_ext <<_ACEOF
#line $LINENO "configure"
-#include "confdefs.h"
+/* confdefs.h. */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h. */
#include <string.h>
_ACEOF
@@ -6214,7 +6401,11 @@ if test $ac_cv_header_stdc = yes; then
# ISC 2.0.2 stdlib.h does not declare free, contrary to ANSI.
cat >conftest.$ac_ext <<_ACEOF
#line $LINENO "configure"
-#include "confdefs.h"
+/* confdefs.h. */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h. */
#include <stdlib.h>
_ACEOF
@@ -6235,13 +6426,18 @@ if test $ac_cv_header_stdc = yes; then
else
cat >conftest.$ac_ext <<_ACEOF
#line $LINENO "configure"
-#include "confdefs.h"
+/* confdefs.h. */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h. */
#include <ctype.h>
#if ((' ' & 0x0FF) == 0x020)
# define ISLOWER(c) ('a' <= (c) && (c) <= 'z')
# define TOUPPER(c) (ISLOWER(c) ? 'A' + ((c) - 'a') : (c))
#else
-# define ISLOWER(c) (('a' <= (c) && (c) <= 'i') \
+# define ISLOWER(c) \
+ (('a' <= (c) && (c) <= 'i') \
|| ('j' <= (c) && (c) <= 'r') \
|| ('s' <= (c) && (c) <= 'z'))
# define TOUPPER(c) (ISLOWER(c) ? ((c) | 0x40) : (c))
@@ -6274,7 +6470,8 @@ if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
else
echo "$as_me: program exited with status $ac_status" >&5
echo "$as_me: failed program was:" >&5
-cat conftest.$ac_ext >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
( exit $ac_status )
ac_cv_header_stdc=no
fi
@@ -6313,7 +6510,11 @@ if eval "test \"\${$as_ac_Header+set}\" = set"; then
else
cat >conftest.$ac_ext <<_ACEOF
#line $LINENO "configure"
-#include "confdefs.h"
+/* confdefs.h. */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h. */
$ac_includes_default
#include <$ac_header>
@@ -6333,7 +6534,8 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
eval "$as_ac_Header=yes"
else
echo "$as_me: failed program was:" >&5
-cat conftest.$ac_ext >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
eval "$as_ac_Header=no"
fi
rm -f conftest.$ac_objext conftest.$ac_ext
@@ -6357,7 +6559,11 @@ if test "${ac_cv_type_long_double+set}" = set; then
else
cat >conftest.$ac_ext <<_ACEOF
#line $LINENO "configure"
-#include "confdefs.h"
+/* confdefs.h. */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h. */
$ac_includes_default
int
main ()
@@ -6385,7 +6591,8 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
ac_cv_type_long_double=yes
else
echo "$as_me: failed program was:" >&5
-cat conftest.$ac_ext >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
ac_cv_type_long_double=no
fi
rm -f conftest.$ac_objext conftest.$ac_ext
@@ -6407,7 +6614,11 @@ else
# Depending upon the size, compute the lo and hi bounds.
cat >conftest.$ac_ext <<_ACEOF
#line $LINENO "configure"
-#include "confdefs.h"
+/* confdefs.h. */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h. */
$ac_includes_default
int
main ()
@@ -6435,7 +6646,11 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
while :; do
cat >conftest.$ac_ext <<_ACEOF
#line $LINENO "configure"
-#include "confdefs.h"
+/* confdefs.h. */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h. */
$ac_includes_default
int
main ()
@@ -6462,7 +6677,8 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
ac_hi=$ac_mid; break
else
echo "$as_me: failed program was:" >&5
-cat conftest.$ac_ext >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
ac_lo=`expr $ac_mid + 1`
if test $ac_lo -le $ac_mid; then
ac_lo= ac_hi=
@@ -6474,10 +6690,15 @@ rm -f conftest.$ac_objext conftest.$ac_ext
done
else
echo "$as_me: failed program was:" >&5
-cat conftest.$ac_ext >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
cat >conftest.$ac_ext <<_ACEOF
#line $LINENO "configure"
-#include "confdefs.h"
+/* confdefs.h. */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h. */
$ac_includes_default
int
main ()
@@ -6505,7 +6726,11 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
while :; do
cat >conftest.$ac_ext <<_ACEOF
#line $LINENO "configure"
-#include "confdefs.h"
+/* confdefs.h. */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h. */
$ac_includes_default
int
main ()
@@ -6532,7 +6757,8 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
ac_lo=$ac_mid; break
else
echo "$as_me: failed program was:" >&5
-cat conftest.$ac_ext >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
ac_hi=`expr '(' $ac_mid ')' - 1`
if test $ac_mid -le $ac_hi; then
ac_lo= ac_hi=
@@ -6544,7 +6770,8 @@ rm -f conftest.$ac_objext conftest.$ac_ext
done
else
echo "$as_me: failed program was:" >&5
-cat conftest.$ac_ext >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
ac_lo= ac_hi=
fi
rm -f conftest.$ac_objext conftest.$ac_ext
@@ -6555,7 +6782,11 @@ while test "x$ac_lo" != "x$ac_hi"; do
ac_mid=`expr '(' $ac_hi - $ac_lo ')' / 2 + $ac_lo`
cat >conftest.$ac_ext <<_ACEOF
#line $LINENO "configure"
-#include "confdefs.h"
+/* confdefs.h. */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h. */
$ac_includes_default
int
main ()
@@ -6582,26 +6813,35 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
ac_hi=$ac_mid
else
echo "$as_me: failed program was:" >&5
-cat conftest.$ac_ext >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
ac_lo=`expr '(' $ac_mid ')' + 1`
fi
rm -f conftest.$ac_objext conftest.$ac_ext
done
case $ac_lo in
?*) ac_cv_sizeof_long_double=$ac_lo;;
-'') { { echo "$as_me:$LINENO: error: cannot compute sizeof (long double), 77" >&5
-echo "$as_me: error: cannot compute sizeof (long double), 77" >&2;}
+'') { { echo "$as_me:$LINENO: error: cannot compute sizeof (long double), 77
+See \`config.log' for more details." >&5
+echo "$as_me: error: cannot compute sizeof (long double), 77
+See \`config.log' for more details." >&2;}
{ (exit 1); exit 1; }; } ;;
esac
else
if test "$cross_compiling" = yes; then
- { { echo "$as_me:$LINENO: error: cannot run test program while cross compiling" >&5
-echo "$as_me: error: cannot run test program while cross compiling" >&2;}
+ { { echo "$as_me:$LINENO: error: cannot run test program while cross compiling
+See \`config.log' for more details." >&5
+echo "$as_me: error: cannot run test program while cross compiling
+See \`config.log' for more details." >&2;}
{ (exit 1); exit 1; }; }
else
cat >conftest.$ac_ext <<_ACEOF
#line $LINENO "configure"
-#include "confdefs.h"
+/* confdefs.h. */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h. */
$ac_includes_default
long longval () { return (long) (sizeof (long double)); }
unsigned long ulongval () { return (long) (sizeof (long double)); }
@@ -6649,10 +6889,13 @@ if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
else
echo "$as_me: program exited with status $ac_status" >&5
echo "$as_me: failed program was:" >&5
-cat conftest.$ac_ext >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
( exit $ac_status )
-{ { echo "$as_me:$LINENO: error: cannot compute sizeof (long double), 77" >&5
-echo "$as_me: error: cannot compute sizeof (long double), 77" >&2;}
+{ { echo "$as_me:$LINENO: error: cannot compute sizeof (long double), 77
+See \`config.log' for more details." >&5
+echo "$as_me: error: cannot compute sizeof (long double), 77
+See \`config.log' for more details." >&2;}
{ (exit 1); exit 1; }; }
fi
rm -f core core.* *.core gmon.out bb.out conftest$ac_exeext conftest.$ac_objext conftest.$ac_ext
@@ -6951,7 +7194,7 @@ _ACEOF
t end
/^ac_cv_env/!s/^\([^=]*\)=\(.*\)$/\1=${\1=\2}/
: end' >>confcache
-if cmp -s $cache_file confcache; then :; else
+if diff $cache_file confcache >/dev/null 2>&1; then :; else
if test -w $cache_file; then
test "x$cache_file" != "x/dev/null" && echo "updating cache $cache_file"
cat confcache >$cache_file
@@ -7011,6 +7254,8 @@ cat >$CONFIG_STATUS <<_ACEOF
# configure, is in config.log if it exists.
debug=false
+ac_cs_recheck=false
+ac_cs_silent=false
SHELL=\${CONFIG_SHELL-$SHELL}
_ACEOF
@@ -7045,7 +7290,10 @@ PS2='> '
PS4='+ '
# NLS nuisances.
-for as_var in LANG LANGUAGE LC_ALL LC_COLLATE LC_CTYPE LC_NUMERIC LC_MESSAGES LC_TIME
+for as_var in \
+ LANG LANGUAGE LC_ADDRESS LC_ALL LC_COLLATE LC_CTYPE LC_IDENTIFICATION \
+ LC_MEASUREMENT LC_MESSAGES LC_MONETARY LC_NAME LC_NUMERIC LC_PAPER \
+ LC_TELEPHONE LC_TIME
do
if (set +x; test -n "`(eval $as_var=C; export $as_var) 2>&1`"); then
eval $as_var=C; export $as_var
@@ -7091,15 +7339,15 @@ as_cr_alnum=$as_cr_Letters$as_cr_digits
# The user is always right.
if test "${PATH_SEPARATOR+set}" != set; then
- echo "#! /bin/sh" >conftest.sh
- echo "exit 0" >>conftest.sh
- chmod +x conftest.sh
- if (PATH="/nonexistent;."; conftest.sh) >/dev/null 2>&1; then
+ echo "#! /bin/sh" >conf$$.sh
+ echo "exit 0" >>conf$$.sh
+ chmod +x conf$$.sh
+ if (PATH="/nonexistent;."; conf$$.sh) >/dev/null 2>&1; then
PATH_SEPARATOR=';'
else
PATH_SEPARATOR=:
fi
- rm -f conftest.sh
+ rm -f conf$$.sh
fi
@@ -7262,7 +7510,7 @@ _ASBOX
cat >&5 <<_CSEOF
This file was extended by GNU C Library $as_me (see version.h), which was
-generated by GNU Autoconf 2.54. Invocation command line was
+generated by GNU Autoconf 2.57. Invocation command line was
CONFIG_FILES = $CONFIG_FILES
CONFIG_HEADERS = $CONFIG_HEADERS
@@ -7302,6 +7550,7 @@ Usage: $0 [OPTIONS] [FILE]...
-h, --help print this help, then exit
-V, --version print version number, then exit
+ -q, --quiet do not print progress messages
-d, --debug don't remove temporary files
--recheck update $as_me by reconfiguring in the same conditions
--file=FILE[:TEMPLATE]
@@ -7324,7 +7573,7 @@ _ACEOF
cat >>$CONFIG_STATUS <<_ACEOF
ac_cs_version="\\
GNU C Library config.status (see version.h)
-configured by $0, generated by GNU Autoconf 2.54,
+configured by $0, generated by GNU Autoconf 2.57,
with options \\"`echo "$ac_configure_args" | sed 's/[\\""\`\$]/\\\\&/g'`\\"
Copyright 1992, 1993, 1994, 1995, 1996, 1998, 1999, 2000, 2001
@@ -7361,12 +7610,9 @@ do
case $ac_option in
# Handling of the options.
_ACEOF
-cat >>$CONFIG_STATUS <<_ACEOF
- -recheck | --recheck | --rechec | --reche | --rech | --rec | --re | --r)
- echo "running $SHELL $0 " $ac_configure_args " --no-create --no-recursion"
- exec $SHELL $0 $ac_configure_args --no-create --no-recursion ;;
-_ACEOF
cat >>$CONFIG_STATUS <<\_ACEOF
+ -recheck | --recheck | --rechec | --reche | --rech | --rec | --re | --r)
+ ac_cs_recheck=: ;;
--version | --vers* | -V )
echo "$ac_cs_version"; exit 0 ;;
--he | --h)
@@ -7388,6 +7634,9 @@ Try \`$0 --help' for more information." >&2;}
$ac_shift
CONFIG_HEADERS="$CONFIG_HEADERS $ac_optarg"
ac_need_defaults=false;;
+ -q | -quiet | --quiet | --quie | --qui | --qu | --q \
+ | -silent | --silent | --silen | --sile | --sil | --si | --s)
+ ac_cs_silent=: ;;
# This is an error.
-*) { { echo "$as_me:$LINENO: error: unrecognized option: $1
@@ -7402,6 +7651,20 @@ Try \`$0 --help' for more information." >&2;}
shift
done
+ac_configure_extra_args=
+
+if $ac_cs_silent; then
+ exec 6>/dev/null
+ ac_configure_extra_args="$ac_configure_extra_args --silent"
+fi
+
+_ACEOF
+cat >>$CONFIG_STATUS <<_ACEOF
+if \$ac_cs_recheck; then
+ echo "running $SHELL $0 " $ac_configure_args \$ac_configure_extra_args " --no-create --no-recursion" >&6
+ exec $SHELL $0 $ac_configure_args \$ac_configure_extra_args --no-create --no-recursion
+fi
+
_ACEOF
cat >>$CONFIG_STATUS <<_ACEOF
@@ -7442,6 +7705,9 @@ if $ac_need_defaults; then
test "${CONFIG_COMMANDS+set}" = set || CONFIG_COMMANDS=$config_commands
fi
+# Have a temporary directory for convenience. Make it in the build tree
+# simply because there is no reason to put it here, and in addition,
+# creating and moving files from /tmp can sometimes cause problems.
# Create a temporary directory, and hook for its removal unless debugging.
$debug ||
{
@@ -7450,17 +7716,17 @@ $debug ||
}
# Create a (secure) tmp directory for tmp files.
-: ${TMPDIR=/tmp}
+
{
- tmp=`(umask 077 && mktemp -d -q "$TMPDIR/csXXXXXX") 2>/dev/null` &&
+ tmp=`(umask 077 && mktemp -d -q "./confstatXXXXXX") 2>/dev/null` &&
test -n "$tmp" && test -d "$tmp"
} ||
{
- tmp=$TMPDIR/cs$$-$RANDOM
+ tmp=./confstat$$-$RANDOM
(umask 077 && mkdir $tmp)
} ||
{
- echo "$me: cannot create a temporary directory in $TMPDIR" >&2
+ echo "$me: cannot create a temporary directory in ." >&2
{ (exit 1); exit 1; }
}
@@ -7575,6 +7841,7 @@ s,@libc_cv_z_initfirst@,$libc_cv_z_initfirst,;t t
s,@libc_cv_Bgroup@,$libc_cv_Bgroup,;t t
s,@ASFLAGS_config@,$ASFLAGS_config,;t t
s,@libc_cv_z_combreloc@,$libc_cv_z_combreloc,;t t
+s,@libc_cv_z_execstack@,$libc_cv_z_execstack,;t t
s,@libc_cv_have_initfini@,$libc_cv_have_initfini,;t t
s,@libc_cv_cpp_asm_debuginfo@,$libc_cv_cpp_asm_debuginfo,;t t
s,@no_whole_archive@,$no_whole_archive,;t t
@@ -7990,7 +8257,7 @@ cat >>$CONFIG_STATUS <<\_ACEOF
cat $tmp/in >>$tmp/config.h
rm -f $tmp/in
if test x"$ac_file" != x-; then
- if cmp -s $ac_file $tmp/config.h 2>/dev/null; then
+ if diff $ac_file $tmp/config.h >/dev/null 2>&1; then
{ echo "$as_me:$LINENO: $ac_file is unchanged" >&5
echo "$as_me: $ac_file is unchanged" >&6;}
else
@@ -8123,8 +8390,11 @@ ac_clean_files=$ac_clean_files_save
# need to make the FD available again.
if test "$no_create" != yes; then
ac_cs_success=:
+ ac_config_status_args=
+ test "$silent" = yes &&
+ ac_config_status_args="$ac_config_status_args --quiet"
exec 5>/dev/null
- $SHELL $CONFIG_STATUS || ac_cs_success=false
+ $SHELL $CONFIG_STATUS $ac_config_status_args || ac_cs_success=false
exec 5>>config.log
# Use ||, not &&, to avoid exiting from the if with $? = 1, which
# would make configure fail if this is the last instruction.
diff --git a/configure.in b/configure.in
index 91d903f591..c3f4adb89d 100644
--- a/configure.in
+++ b/configure.in
@@ -1334,6 +1334,7 @@ EOF
ASFLAGS_config="$ASFLAGS_config -Wa,--noexecstack"
fi
AC_SUBST(ASFLAGS_config)
+
AC_CACHE_CHECK(for -z combreloc,
libc_cv_z_combreloc, [dnl
cat > conftest.c <<EOF
@@ -1363,8 +1364,25 @@ dnl look for a section named .rel.dyn.
if test "$libc_cv_z_combreloc" = yes; then
AC_DEFINE(HAVE_Z_COMBRELOC)
fi
+ AC_SUBST(libc_cv_z_combreloc)
+
+ AC_CACHE_CHECK(for -z execstack,
+ libc_cv_z_execstack, [dnl
+ cat > conftest.c <<EOF
+int _start (void) { return 42; }
+EOF
+ if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS
+ -shared -o conftest.so conftest.c
+ -Wl,-z,execstack -nostdlib
+ 1>&AS_MESSAGE_LOG_FD])
+ then
+ libc_cv_z_execstack=yes
+ else
+ libc_cv_z_execstack=no
+ fi
+ rm -f conftest*])
+ AC_SUBST(libc_cv_z_execstack)
fi
-AC_SUBST(libc_cv_z_combreloc)
if test $elf != yes; then
AC_CACHE_CHECK(for .init and .fini sections, libc_cv_have_initfini,
diff --git a/elf/Makefile b/elf/Makefile
index d5a1c3de34..36f205abb2 100644
--- a/elf/Makefile
+++ b/elf/Makefile
@@ -29,7 +29,8 @@ routines = $(dl-routines) dl-open dl-close dl-support dl-iteratephdr \
# profiled libraries.
dl-routines = $(addprefix dl-,load cache lookup object reloc deps \
runtime error init fini debug misc \
- version profile conflict tls origin)
+ version profile conflict tls origin \
+ execstack)
all-dl-routines = $(dl-routines) $(sysdep-dl-routines)
# But they are absent from the shared libc, because that code is in ld.so.
elide-routines.os = $(all-dl-routines) dl-support enbl-secure \
@@ -80,6 +81,7 @@ distribute := rtld-Rules \
reldep9.c reldep9mod1.c reldep9mod2.c reldep9mod3.c \
tst-array1.exp tst-array2.exp tst-array4.exp \
tst-array2dep.c \
+ tst-execstack-mod.c \
check-textrel.c dl-sysdep.h
CFLAGS-dl-runtime.c = -fexceptions -fasynchronous-unwind-tables
@@ -150,12 +152,14 @@ tests += loadtest restest1 preloadtest loadfail multiload origtest resolvfail \
neededtest3 neededtest4 unload2 lateglobal initfirst global \
restest2 next dblload dblunload reldep5 reldep6 reldep7 reldep8 \
circleload1 tst-tls3 tst-tls4 tst-tls5 tst-tls6 tst-tls7 tst-tls8 \
- tst-tls10 tst-tls11 tst-tls12 tst-tls13 tst-tls14 tst-align
+ tst-tls10 tst-tls11 tst-tls12 tst-tls13 tst-tls14 tst-align \
+ $(tests-execstack-$(have-z-execstack))
# reldep9
test-srcs = tst-pathopt
tests-vis-yes = vismain
tests-nodelete-yes = nodelete nodelete2
tests-nodlopen-yes = nodlopen nodlopen2
+tests-execstack-yes = tst-execstack tst-execstack-needed
endif
modules-names = testobj1 testobj2 testobj3 testobj4 testobj5 testobj6 \
testobj1_1 failobj constload2 constload3 unloadmod \
@@ -178,7 +182,7 @@ modules-names = testobj1 testobj2 testobj3 testobj4 testobj5 testobj6 \
circlemod3 circlemod3a \
reldep8mod1 reldep8mod2 reldep8mod3 \
reldep9mod1 reldep9mod2 reldep9mod3 \
- tst-alignmod
+ tst-alignmod $(modules-execstack-$(have-z-execstack))
ifeq (yes,$(have-initfini-array))
modules-names += tst-array2dep
endif
@@ -186,6 +190,7 @@ modules-vis-yes = vismod1 vismod2 vismod3
modules-nodelete-yes = nodelmod1 nodelmod2 nodelmod3 nodelmod4 \
nodel2mod1 nodel2mod2 nodel2mod3
modules-nodlopen-yes = nodlopenmod nodlopenmod2
+modules-execstack-yes = tst-execstack-mod
extra-objs += $(addsuffix .os,$(strip $(modules-names)))
# We need this variable to be sure the test modules get the right CPPFLAGS.
test-extras += $(modules-names)
@@ -660,6 +665,16 @@ $(objpfx)tst-tls9-static: $(common-objpfx)dlfcn/libdl.a
$(objpfx)tst-tls9-static.out: $(objpfx)tst-tlsmod5.so $(objpfx)tst-tlsmod6.so
endif
+ifeq ($(have-z-execstack),yes)
+$(objpfx)tst-execstack: $(libdl)
+$(objpfx)tst-execstack.out: $(objpfx)tst-execstack-mod.so
+LDFLAGS-tst-execstack = -Wl,-z,noexecstack
+LDFLAGS-tst-execstack-mod = -Wl,-z,execstack
+
+$(objpfx)tst-execstack-needed: $(objpfx)tst-execstack-mod.so
+LDFLAGS-tst-execstack-needed = -Wl,-z,noexecstack
+endif
+
$(objpfx)tst-array1.out: $(objpfx)tst-array1
$(elf-objpfx)$(rtld-installed-name) \
--library-path $(rpath-link)$(patsubst %,:%,$(sysdep-library-path)) \
diff --git a/elf/tst-execstack-mod.c b/elf/tst-execstack-mod.c
new file mode 100644
index 0000000000..038e6550b5
--- /dev/null
+++ b/elf/tst-execstack-mod.c
@@ -0,0 +1,30 @@
+/* Test module for making nonexecutable stacks executable
+ on load of a DSO that requires executable stacks. */
+
+#include <stdbool.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+void callme (void (*callback) (void));
+
+/* This is a function that makes use of executable stack by
+ using a local function trampoline. */
+void
+tryme (void)
+{
+ bool ok = false;
+ void callback (void) { ok = true; }
+
+ callme (&callback);
+
+ if (ok)
+ printf ("DSO called ok (local %p, trampoline %p)\n", &ok, &callback);
+ else
+ abort ();
+}
+
+void
+callme (void (*callback) (void))
+{
+ (*callback) ();
+}
diff --git a/elf/tst-execstack-needed.c b/elf/tst-execstack-needed.c
new file mode 100644
index 0000000000..03090f7dd6
--- /dev/null
+++ b/elf/tst-execstack-needed.c
@@ -0,0 +1,36 @@
+/* Test program for making nonexecutable stacks executable
+ on DT_NEEDED load of a DSO that requires executable stacks. */
+
+#include <dlfcn.h>
+#include <stdio.h>
+#include <string.h>
+#include <unistd.h>
+#include <error.h>
+
+extern void tryme (void); /* from tst-execstack-mod.so */
+
+static void deeper (void (*f) (void));
+
+static int
+do_test (void)
+{
+ tryme ();
+
+ /* Test that growing the stack region gets new executable pages too. */
+ deeper (&tryme);
+
+ return 0;
+}
+
+static void
+deeper (void (*f) (void))
+{
+ char stack[1100 * 1024];
+ memfrob (stack, sizeof stack);
+ (*f) ();
+ memfrob (stack, sizeof stack);
+}
+
+
+#define TEST_FUNCTION do_test ()
+#include "../test-skeleton.c"
diff --git a/elf/tst-execstack.c b/elf/tst-execstack.c
new file mode 100644
index 0000000000..21eaa9bc90
--- /dev/null
+++ b/elf/tst-execstack.c
@@ -0,0 +1,133 @@
+/* Test program for making nonexecutable stacks executable
+ on load of a DSO that requires executable stacks. */
+
+#include <dlfcn.h>
+#include <stdio.h>
+#include <string.h>
+#include <unistd.h>
+#include <error.h>
+
+static void
+print_maps (void)
+{
+#if 0
+ char *cmd = NULL;
+ asprintf (&cmd, "cat /proc/%d/maps", getpid ());
+ system (cmd);
+ free (cmd);
+#endif
+}
+
+static void deeper (void (*f) (void));
+
+#if USE_PTHREADS
+# include <pthread.h>
+
+static void *
+tryme_thread (void *f)
+{
+ (*((void (*) (void)) f)) ();
+
+ return 0;
+}
+
+static pthread_barrier_t startup_barrier, go_barrier;
+static void *
+waiter_thread (void *arg)
+{
+ void **f = arg;
+ pthread_barrier_wait (&startup_barrier);
+ pthread_barrier_wait (&go_barrier);
+
+ (*((void (*) (void)) *f)) ();
+
+ return 0;
+}
+#endif
+
+static int
+do_test (void)
+{
+ void *f;
+
+#if USE_PTHREADS
+ /* Create some threads while stacks are nonexecutable. */
+ #define N 5
+ pthread_t thr[N];
+
+ pthread_barrier_init (&startup_barrier, NULL, N + 1);
+ pthread_barrier_init (&go_barrier, NULL, N + 1);
+
+ for (int i = 0; i < N; ++i)
+ {
+ int rc = pthread_create (&thr[i], NULL, &waiter_thread, &f);
+ if (rc)
+ error (1, rc, "pthread_create");
+ }
+
+ /* Make sure they are all there using their stacks. */
+ pthread_barrier_wait (&startup_barrier);
+ puts ("threads waiting");
+#endif
+
+ print_maps ();
+
+ /* Loading this module should force stacks to become executable. */
+ void *h = dlopen ("tst-execstack-mod.so", RTLD_LAZY);
+ if (h == NULL)
+ {
+ printf ("cannot load: %s\n", dlerror ());
+ return 1;
+ }
+
+ f = dlsym (h, "tryme");
+ if (f == NULL)
+ {
+ printf ("symbol not found: %s\n", dlerror ());
+ return 1;
+ }
+
+ /* Test if that really made our stack executable.
+ The `tryme' function should crash if not. */
+
+ (*((void (*) (void)) f)) ();
+
+ print_maps ();
+
+ /* Test that growing the stack region gets new executable pages too. */
+ deeper ((void (*) (void)) f);
+
+ print_maps ();
+
+#if USE_PTHREADS
+ /* Test that a fresh thread now gets an executable stack. */
+ {
+ pthread_t th;
+ int rc = pthread_create (&th, NULL, &tryme_thread, f);
+ if (rc)
+ error (1, rc, "pthread_create");
+ }
+
+ puts ("threads go");
+ /* The existing threads' stacks should have been changed.
+ Let them run to test it. */
+ pthread_barrier_wait (&go_barrier);
+
+ pthread_exit (0);
+#endif
+
+ return 0;
+}
+
+static void
+deeper (void (*f) (void))
+{
+ char stack[1100 * 1024];
+ memfrob (stack, sizeof stack);
+ (*f) ();
+ memfrob (stack, sizeof stack);
+}
+
+
+#define TEST_FUNCTION do_test ()
+#include "../test-skeleton.c"
diff --git a/sysdeps/i386/dl-machine.h b/sysdeps/i386/dl-machine.h
index 34019b89bb..9e84e2c059 100644
--- a/sysdeps/i386/dl-machine.h
+++ b/sysdeps/i386/dl-machine.h
@@ -276,18 +276,17 @@ _dl_runtime_profile:\n\
.globl _start\n\
.globl _dl_start_user\n\
_start:\n\
+ # Point %ebx at the GOT.\n\
+ call 0b\n\
+ addl $_GLOBAL_OFFSET_TABLE_, %ebx\n\
# Note that _dl_start gets the parameter in %eax.\n\
movl %esp, %eax\n\
+ # Store the highest stack address\n\
+ movl %eax, __libc_stack_end@GOTOFF(%ebx)\n\
call _dl_start\n\
_dl_start_user:\n\
# Save the user entry point address in %edi.\n\
movl %eax, %edi\n\
- # Point %ebx at the GOT.\n\
- call 0b\n\
- addl $_GLOBAL_OFFSET_TABLE_, %ebx\n\
- # Store the highest stack address\n\
- movl __libc_stack_end@GOT(%ebx), %eax\n\
- movl %esp, (%eax)\n\
# See if we were run as a command with the executable file\n\
# name as an extra leading argument.\n\
movl _dl_skip_args@GOTOFF(%ebx), %eax\n\
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-05 17:49:23 +0000