Update.

2002-02-28  Jakub Jelinek  <jakub@redhat.com>

	* elf/rtld.c (_rtld_global): Remove .protected.
	(_rtld_local): Strong alias to _rtld_global.
	* elf/Makefile (CFLAGS-.os): Add -D_RTLD_LOCAL if compiling rtld
	only .os object.
	* sysdeps/generic/ldsodefs.h (GL): If SHARED and _RTLD_LOCAL, use
	_rtld_local instead of _rtld_global.
	(_rtld_local): Add hidden extern, possibly in .sdata section.
	* configure.in: Add tests for visibility attribute and .sdata.
	* config.h.in: Add HAVE_VISIBILITY_ATTRIBUTE and HAVE_SDATA_SECTION.
	* sysdeps/alpha/dl-machine.h: Use _rtld_local instead of _rtld_global.
	* sysdeps/arm/dl-machine.h: Likewise.
	* sysdeps/generic/ldsodefs.h: Likewise.
	* sysdeps/hppa/dl-machine.h: Likewise.
	* sysdeps/cris/dl-machine.h: Likewise.
	* sysdeps/i386/dl-machine.h: Likewise.
	* sysdeps/ia64/dl-machine.h: Likewise.
	* sysdeps/m68k/dl-machine.h: Likewise.
	* sysdeps/mips/mips64/dl-machine.h: Likewise.
	* sysdeps/mips/dl-machine.h: Likewise.
	* sysdeps/sparc/sparc32/dl-machine.h: Likewise.
	* sysdeps/sparc/sparc64/dl-machine.h: Likewise.
	* sysdeps/sh/dl-machine.h: Likewise.
	* sysdeps/s390/s390-32/dl-machine.h: Likewise.
	* sysdeps/s390/s390-64/dl-machine.h: Likewise.
	* sysdeps/x86_64/dl-machine.h: Likewise.

1 files changed, 112 insertions, 56 deletions

diff --git a/configure b/configure
index e6460308ea..606283442f 100755
--- a/configure
+++ b/configure
@@ -2806,8 +2806,64 @@ echo "$ac_t""$libc_cv_asm_protected_directive" 1>&6
 EOF
 
 
+  if test $libc_cv_asm_protected_directive = yes; then
+    echo $ac_n "checking whether __attribute__((visibility())) is supported""... $ac_c" 1>&6
+echo "configure:2812: checking whether __attribute__((visibility())) is supported" >&5
+if eval "test \"`echo '$''{'libc_cv_visibility_attribute'+set}'`\" = set"; then
+  echo $ac_n "(cached) $ac_c" 1>&6
+else
+  cat > conftest.c <<EOF
+		  int foo __attribute__ ((visibility ("hidden"))) = 1;
+		  int bar __attribute__ ((visibility ("protected"))) = 1;
+EOF
+		  libc_cv_visibility_attribute=no
+		  if ${CC-cc} -Werror -S conftest.c -o conftest.s >/dev/null 2>&1; then
+		    if grep '\.hidden.*foo' conftest.s >/dev/null; then
+		      if grep '\.protected.*bar' conftest.s >/dev/null; then
+			libc_cv_visibility_attribute=yes
+		      fi
+		    fi
+		  fi
+		  rm -f conftest.cs
+		 
+fi
+
+echo "$ac_t""$libc_cv_visibility_attribute" 1>&6
+    if test $libc_cv_visibility_attribute = yes; then
+      cat >> confdefs.h <<\EOF
+#define HAVE_VISIBILITY_ATTRIBUTE 1
+EOF
+
+    fi
+  fi
+
+  if test $libc_cv_visibility_attribute = yes -a $gnu_ld = yes; then
+    echo $ac_n "checking whether to put _rtld_local into .sdata section""... $ac_c" 1>&6
+echo "configure:2843: checking whether to put _rtld_local into .sdata section" >&5
+if eval "test \"`echo '$''{'libc_cv_have_sdata_section'+set}'`\" = set"; then
+  echo $ac_n "(cached) $ac_c" 1>&6
+else
+  echo "int i;" > conftest.c
+		  libc_cv_have_sdata_section=no
+		  if ${CC-cc} -shared -Wl,--verbose conftest.c -o conftest.so 2>&1 \
+		     | grep '\.sdata' >/dev/null; then
+		    libc_cv_have_sdata_section=yes
+		  fi
+		  rm -f conftest.c conftest.so
+		 
+fi
+
+echo "$ac_t""$libc_cv_have_sdata_section" 1>&6
+    if test $libc_cv_have_sdata_section = yes; then
+      cat >> confdefs.h <<\EOF
+#define HAVE_SDATA_SECTION 1
+EOF
+
+    fi
+  fi
+
   echo $ac_n "checking for -z nodelete option""... $ac_c" 1>&6
-echo "configure:2811: checking for -z nodelete option" >&5
+echo "configure:2867: checking for -z nodelete option" >&5
 if eval "test \"`echo '$''{'libc_cv_z_nodelete'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -2816,7 +2872,7 @@ int _start (void) { return 42; }
 EOF
   if { ac_try='${CC-cc} -shared -o conftest.so conftest.c
 		     -nostartfiles -nostdlib
-		     -Wl,--enable-new-dtags,-z,nodelete 1>&5'; { (eval echo configure:2820: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }; }
+		     -Wl,--enable-new-dtags,-z,nodelete 1>&5'; { (eval echo configure:2876: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }; }
   then
     libc_cv_z_nodelete=yes
   else
@@ -2829,7 +2885,7 @@ echo "$ac_t""$libc_cv_z_nodelete" 1>&6
   
 
   echo $ac_n "checking for -z nodlopen option""... $ac_c" 1>&6
-echo "configure:2833: checking for -z nodlopen option" >&5
+echo "configure:2889: checking for -z nodlopen option" >&5
 if eval "test \"`echo '$''{'libc_cv_z_nodlopen'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -2838,7 +2894,7 @@ int _start (void) { return 42; }
 EOF
   if { ac_try='${CC-cc} -shared -o conftest.so conftest.c
 			-nostartfiles -nostdlib
-			-Wl,--enable-new-dtags,-z,nodlopen 1>&5'; { (eval echo configure:2842: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }; }
+			-Wl,--enable-new-dtags,-z,nodlopen 1>&5'; { (eval echo configure:2898: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }; }
   then
     libc_cv_z_nodlopen=yes
   else
@@ -2851,7 +2907,7 @@ echo "$ac_t""$libc_cv_z_nodlopen" 1>&6
   
 
   echo $ac_n "checking for -z initfirst option""... $ac_c" 1>&6
-echo "configure:2855: checking for -z initfirst option" >&5
+echo "configure:2911: checking for -z initfirst option" >&5
 if eval "test \"`echo '$''{'libc_cv_z_initfirst'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -2860,7 +2916,7 @@ int _start (void) { return 42; }
 EOF
   if { ac_try='${CC-cc} -shared -o conftest.so conftest.c
 			-nostartfiles -nostdlib
-			-Wl,--enable-new-dtags,-z,initfirst 1>&5'; { (eval echo configure:2864: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }; }
+			-Wl,--enable-new-dtags,-z,initfirst 1>&5'; { (eval echo configure:2920: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }; }
   then
     libc_cv_z_initfirst=yes
   else
@@ -2873,14 +2929,14 @@ echo "$ac_t""$libc_cv_z_initfirst" 1>&6
   
 
   echo $ac_n "checking for -Bgroup option""... $ac_c" 1>&6
-echo "configure:2877: checking for -Bgroup option" >&5
+echo "configure:2933: checking for -Bgroup option" >&5
 if eval "test \"`echo '$''{'libc_cv_Bgroup'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
     cat > conftest.c <<EOF
 int _start (void) { return 42; }
 EOF
-  if { ac_try='${CC-cc} -shared -o conftest.so conftest.c -Wl,-Bgroup -nostdlib 1>&5'; { (eval echo configure:2884: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }; }
+  if { ac_try='${CC-cc} -shared -o conftest.so conftest.c -Wl,-Bgroup -nostdlib 1>&5'; { (eval echo configure:2940: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }; }
   then
     libc_cv_Bgroup=yes
   else
@@ -2893,7 +2949,7 @@ echo "$ac_t""$libc_cv_Bgroup" 1>&6
   
 
   echo $ac_n "checking for -z combreloc""... $ac_c" 1>&6
-echo "configure:2897: checking for -z combreloc" >&5
+echo "configure:2953: checking for -z combreloc" >&5
 if eval "test \"`echo '$''{'libc_cv_z_combreloc'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -2904,7 +2960,7 @@ int foo (void) { return bar (mumble); }
 EOF
   if { ac_try='${CC-cc} -shared -o conftest.so conftest.c
 			-nostdlib -nostartfiles
-			-Wl,-z,combreloc 1>&5'; { (eval echo configure:2908: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }; }
+			-Wl,-z,combreloc 1>&5'; { (eval echo configure:2964: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }; }
   then
     if readelf -S conftest.so | grep '\.rel\(a\|\)\.dyn' > /dev/null; then
       libc_cv_z_combreloc=yes
@@ -2929,12 +2985,12 @@ fi
 
 if test $elf != yes; then
   echo $ac_n "checking for .init and .fini sections""... $ac_c" 1>&6
-echo "configure:2933: checking for .init and .fini sections" >&5
+echo "configure:2989: checking for .init and .fini sections" >&5
 if eval "test \"`echo '$''{'libc_cv_have_initfini'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 2938 "configure"
+#line 2994 "configure"
 #include "confdefs.h"
 
 int main() {
@@ -2943,7 +2999,7 @@ asm (".section .init");
 				    asm ("${libc_cv_dot_text}");
 ; return 0; }
 EOF
-if { (eval echo configure:2947: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:3003: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   libc_cv_have_initfini=yes
 else
@@ -2966,7 +3022,7 @@ fi
 
 if test $elf = yes -a $gnu_ld = yes; then
   echo $ac_n "checking whether cc puts quotes around section names""... $ac_c" 1>&6
-echo "configure:2970: checking whether cc puts quotes around section names" >&5
+echo "configure:3026: checking whether cc puts quotes around section names" >&5
 if eval "test \"`echo '$''{'libc_cv_have_section_quotes'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -3003,19 +3059,19 @@ if test $elf = yes; then
 else
   if test $ac_cv_prog_cc_works = yes; then
     echo $ac_n "checking for _ prefix on C symbol names""... $ac_c" 1>&6
-echo "configure:3007: checking for _ prefix on C symbol names" >&5
+echo "configure:3063: checking for _ prefix on C symbol names" >&5
 if eval "test \"`echo '$''{'libc_cv_asm_underscores'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 3012 "configure"
+#line 3068 "configure"
 #include "confdefs.h"
 asm ("_glibc_foobar:");
 int main() {
 glibc_foobar ();
 ; return 0; }
 EOF
-if { (eval echo configure:3019: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:3075: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   libc_cv_asm_underscores=yes
 else
@@ -3030,17 +3086,17 @@ fi
 echo "$ac_t""$libc_cv_asm_underscores" 1>&6
   else
     echo $ac_n "checking for _ prefix on C symbol names""... $ac_c" 1>&6
-echo "configure:3034: checking for _ prefix on C symbol names" >&5
+echo "configure:3090: checking for _ prefix on C symbol names" >&5
 if eval "test \"`echo '$''{'libc_cv_asm_underscores'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 3039 "configure"
+#line 3095 "configure"
 #include "confdefs.h"
 void underscore_test(void) {
 return; }
 EOF
-if { (eval echo configure:3044: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:3100: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   if grep _underscore_test conftest* >/dev/null; then
     rm -f conftest*
     libc_cv_asm_underscores=yes
@@ -3072,7 +3128,7 @@ if test $elf = yes; then
 fi
 
 echo $ac_n "checking for assembler .weak directive""... $ac_c" 1>&6
-echo "configure:3076: checking for assembler .weak directive" >&5
+echo "configure:3132: checking for assembler .weak directive" >&5
 if eval "test \"`echo '$''{'libc_cv_asm_weak_directive'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -3095,7 +3151,7 @@ echo "$ac_t""$libc_cv_asm_weak_directive" 1>&6
 
 if test $libc_cv_asm_weak_directive = no; then
   echo $ac_n "checking for assembler .weakext directive""... $ac_c" 1>&6
-echo "configure:3099: checking for assembler .weakext directive" >&5
+echo "configure:3155: checking for assembler .weakext directive" >&5
 if eval "test \"`echo '$''{'libc_cv_asm_weakext_directive'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -3142,14 +3198,14 @@ EOF
     ;;
   hppa*linux*)
   echo $ac_n "checking for assembler line separator""... $ac_c" 1>&6
-echo "configure:3146: checking for assembler line separator" >&5
+echo "configure:3202: checking for assembler line separator" >&5
 if eval "test \"`echo '$''{'libc_cv_asm_line_sep'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
     cat > conftest.s <<EOF
  nop ; is_old_puffin
 EOF
-  if { ac_try='${CC-cc} -c $CFLAGS conftest.s 1>&5'; { (eval echo configure:3153: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }; }; then
+  if { ac_try='${CC-cc} -c $CFLAGS conftest.s 1>&5'; { (eval echo configure:3209: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }; }; then
     libc_cv_asm_line_sep='!'
   else
     if test -z "$enable_hacker_mode"; then
@@ -3171,7 +3227,7 @@ EOF
 esac
 
 echo $ac_n "checking for ld --no-whole-archive""... $ac_c" 1>&6
-echo "configure:3175: checking for ld --no-whole-archive" >&5
+echo "configure:3231: checking for ld --no-whole-archive" >&5
 if eval "test \"`echo '$''{'libc_cv_ld_no_whole_archive'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -3182,7 +3238,7 @@ __throw () {}
 EOF
 if { ac_try='${CC-cc} $CFLAGS
 			    -nostdlib -nostartfiles -Wl,--no-whole-archive
-			    -o conftest conftest.c 1>&5'; { (eval echo configure:3186: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }; }; then
+			    -o conftest conftest.c 1>&5'; { (eval echo configure:3242: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }; }; then
   libc_cv_ld_no_whole_archive=yes
 else
   libc_cv_ld_no_whole_archive=no
@@ -3196,7 +3252,7 @@ if test $libc_cv_ld_no_whole_archive = yes; then
 fi
 
 echo $ac_n "checking for gcc -fexceptions""... $ac_c" 1>&6
-echo "configure:3200: checking for gcc -fexceptions" >&5
+echo "configure:3256: checking for gcc -fexceptions" >&5
 if eval "test \"`echo '$''{'libc_cv_gcc_exceptions'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -3207,7 +3263,7 @@ __throw () {}
 EOF
 if { ac_try='${CC-cc} $CFLAGS
 			    -nostdlib -nostartfiles -fexceptions
-			    -o conftest conftest.c 1>&5'; { (eval echo configure:3211: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }; }; then
+			    -o conftest conftest.c 1>&5'; { (eval echo configure:3267: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }; }; then
   libc_cv_gcc_exceptions=yes
 else
   libc_cv_gcc_exceptions=no
@@ -3222,14 +3278,14 @@ fi
 
 if test "$base_machine" = alpha ; then
 echo $ac_n "checking for function ..ng prefix""... $ac_c" 1>&6
-echo "configure:3226: checking for function ..ng prefix" >&5
+echo "configure:3282: checking for function ..ng prefix" >&5
 if eval "test \"`echo '$''{'libc_cv_gcc_alpha_ng_prefix'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.c <<\EOF
 foo () { }
 EOF
-if { ac_try='${CC-cc} -S conftest.c -o - | fgrep "\$foo..ng" > /dev/null'; { (eval echo configure:3233: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }; };
+if { ac_try='${CC-cc} -S conftest.c -o - | fgrep "\$foo..ng" > /dev/null'; { (eval echo configure:3289: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }; };
 then
   libc_cv_gcc_alpha_ng_prefix=yes
 else
@@ -3256,19 +3312,19 @@ if test "$host_cpu" = powerpc ; then
 # Check for a bug present in at least versions 2.8.x of GCC
 # and versions 1.0.x of EGCS.
 echo $ac_n "checking whether clobbering cr0 causes problems""... $ac_c" 1>&6
-echo "configure:3260: checking whether clobbering cr0 causes problems" >&5
+echo "configure:3316: checking whether clobbering cr0 causes problems" >&5
 if eval "test \"`echo '$''{'libc_cv_c_asmcr0_bug'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 3265 "configure"
+#line 3321 "configure"
 #include "confdefs.h"
 int tester(int x) { asm ("" : : : "cc"); return x & 123; }
 int main() {
 
 ; return 0; }
 EOF
-if { (eval echo configure:3272: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:3328: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   libc_cv_c_asmcr0_bug='no'
 else
@@ -3290,12 +3346,12 @@ fi
 fi
 
 echo $ac_n "checking for DWARF2 unwind info support""... $ac_c" 1>&6
-echo "configure:3294: checking for DWARF2 unwind info support" >&5
+echo "configure:3350: checking for DWARF2 unwind info support" >&5
 if eval "test \"`echo '$''{'libc_cv_gcc_dwarf2_unwind_info'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.c <<EOF
-#line 3299 "configure"
+#line 3355 "configure"
 static char __EH_FRAME_BEGIN__;
 _start ()
 {
@@ -3322,7 +3378,7 @@ __bzero () {}
 EOF
 if { ac_try='${CC-cc} $CFLAGS -DCHECK__register_frame_info
 			    -nostdlib -nostartfiles
-			    -o conftest conftest.c -lgcc >&5'; { (eval echo configure:3326: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }; }; then
+			    -o conftest conftest.c -lgcc >&5'; { (eval echo configure:3382: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }; }; then
   libc_cv_gcc_dwarf2_unwind_info=static
 else
   libc_cv_gcc_dwarf2_unwind_info=no
@@ -3330,7 +3386,7 @@ fi
 if test $libc_cv_gcc_dwarf2_unwind_info = no; then
   if { ac_try='${CC-cc} $CFLAGS -DCHECK__register_frame
 			      -nostdlib -nostartfiles
-			      -o conftest conftest.c -lgcc >&5'; { (eval echo configure:3334: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }; }; then
+			      -o conftest conftest.c -lgcc >&5'; { (eval echo configure:3390: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }; }; then
     libc_cv_gcc_dwarf2_unwind_info=yes
   else
     libc_cv_gcc_dwarf2_unwind_info=no
@@ -3360,12 +3416,12 @@ EOF
 esac
 
 echo $ac_n "checking for __builtin_expect""... $ac_c" 1>&6
-echo "configure:3364: checking for __builtin_expect" >&5
+echo "configure:3420: checking for __builtin_expect" >&5
 if eval "test \"`echo '$''{'libc_cv_gcc_builtin_expect'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.c <<EOF
-#line 3369 "configure"
+#line 3425 "configure"
 int foo (int a)
 {
   a = __builtin_expect (a, 10);
@@ -3373,7 +3429,7 @@ int foo (int a)
 }
 EOF
 if { ac_try='${CC-cc} $CFLAGS -nostdlib -nostartfiles
-			    -o conftest conftest.c -lgcc >&5'; { (eval echo configure:3377: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }; }; then
+			    -o conftest conftest.c -lgcc >&5'; { (eval echo configure:3433: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }; }; then
   libc_cv_gcc_builtin_expect=yes
 else
   libc_cv_gcc_builtin_expect=no
@@ -3390,7 +3446,7 @@ EOF
 fi
 
 echo $ac_n "checking for __builtin_memset""... $ac_c" 1>&6
-echo "configure:3394: checking for __builtin_memset" >&5
+echo "configure:3450: checking for __builtin_memset" >&5
 if eval "test \"`echo '$''{'libc_cv_gcc_builtin_memset'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -3400,7 +3456,7 @@ void zero (void *x)
   __builtin_memset (x, 0, 1000);
 }
 EOF
-if { ac_try='${CC-cc} -O3 -S conftest.c -o - | fgrep "memset" > /dev/null'; { (eval echo configure:3404: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }; };
+if { ac_try='${CC-cc} -O3 -S conftest.c -o - | fgrep "memset" > /dev/null'; { (eval echo configure:3460: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }; };
 then
   libc_cv_gcc_builtin_memset=no
 else
@@ -3418,12 +3474,12 @@ EOF
 fi
 
 echo $ac_n "checking for local label subtraction""... $ac_c" 1>&6
-echo "configure:3422: checking for local label subtraction" >&5
+echo "configure:3478: checking for local label subtraction" >&5
 if eval "test \"`echo '$''{'libc_cv_gcc_subtract_local_labels'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.c <<EOF
-#line 3427 "configure"
+#line 3483 "configure"
 int foo (int a)
 {
   static const int ar[] = { &&l1 - &&l1, &&l2 - &&l1 };
@@ -3436,7 +3492,7 @@ int foo (int a)
 }
 EOF
 if { ac_try='${CC-cc} $CFLAGS -nostdlib -nostartfiles
-			    -o conftest conftest.c -lgcc >&5'; { (eval echo configure:3440: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }; }; then
+			    -o conftest conftest.c -lgcc >&5'; { (eval echo configure:3496: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }; }; then
   libc_cv_gcc_subtract_local_labels=yes
 else
   libc_cv_gcc_subtract_local_labels=no
@@ -3453,7 +3509,7 @@ EOF
 fi
 
 echo $ac_n "checking for libgd""... $ac_c" 1>&6
-echo "configure:3457: checking for libgd" >&5
+echo "configure:3513: checking for libgd" >&5
 if test "$with_gd" != "no"; then
   old_CFLAGS="$CFLAGS"
   CFLAGS="$CFLAGS $libgd_include"
@@ -3462,14 +3518,14 @@ if test "$with_gd" != "no"; then
   old_LIBS="$LIBS"
   LIBS="$LIBS -lgd -lpng -lz -lm"
   cat > conftest.$ac_ext <<EOF
-#line 3466 "configure"
+#line 3522 "configure"
 #include "confdefs.h"
 #include <gd.h>
 int main() {
 gdImagePng (0, 0)
 ; return 0; }
 EOF
-if { (eval echo configure:3473: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:3529: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   LIBGD=yes
 else
@@ -3489,7 +3545,7 @@ echo "$ac_t""$LIBGD" 1>&6
 
 
 echo $ac_n "checking size of long double""... $ac_c" 1>&6
-echo "configure:3493: checking size of long double" >&5
+echo "configure:3549: checking size of long double" >&5
 if eval "test \"`echo '$''{'ac_cv_sizeof_long_double'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -3497,7 +3553,7 @@ else
   ac_cv_sizeof_long_double=0
 else
   cat > conftest.$ac_ext <<EOF
-#line 3501 "configure"
+#line 3557 "configure"
 #include "confdefs.h"
 #include <stdio.h>
 int main()
@@ -3508,7 +3564,7 @@ int main()
   return(0);
 }
 EOF
-if { (eval echo configure:3512: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
+if { (eval echo configure:3568: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
 then
   ac_cv_sizeof_long_double=`cat conftestval`
 else
@@ -3586,7 +3642,7 @@ if test "$uname" = "sysdeps/generic"; then
   fi
 
   echo $ac_n "checking OS release for uname""... $ac_c" 1>&6
-echo "configure:3590: checking OS release for uname" >&5
+echo "configure:3646: checking OS release for uname" >&5
 if eval "test \"`echo '$''{'libc_cv_uname_release'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -3608,7 +3664,7 @@ echo "$ac_t""$libc_cv_uname_release" 1>&6
   uname_release="$libc_cv_uname_release"
 
   echo $ac_n "checking OS version for uname""... $ac_c" 1>&6
-echo "configure:3612: checking OS version for uname" >&5
+echo "configure:3668: checking OS version for uname" >&5
 if eval "test \"`echo '$''{'libc_cv_uname_version'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -3630,7 +3686,7 @@ else
 fi
 
 echo $ac_n "checking stdio selection""... $ac_c" 1>&6
-echo "configure:3634: checking stdio selection" >&5
+echo "configure:3690: checking stdio selection" >&5
 
 case $stdio in
 libio) cat >> confdefs.h <<\EOF
@@ -3644,7 +3700,7 @@ echo "$ac_t""$stdio" 1>&6
 # Test for old glibc 2.0.x headers so that they can be removed properly
 # Search only in includedir.
 echo $ac_n "checking for old glibc 2.0.x headers""... $ac_c" 1>&6
-echo "configure:3648: checking for old glibc 2.0.x headers" >&5
+echo "configure:3704: checking for old glibc 2.0.x headers" >&5
 if eval test -f "${includedir}/elfclass.h" -a -f "${includedir}/fcntlbits.h"
 then
   old_glibc_headers=yes
@@ -3705,7 +3761,7 @@ if test $shared = default; then
 fi
 
 echo $ac_n "checking whether -fPIC is default""... $ac_c" 1>&6
-echo "configure:3709: checking whether -fPIC is default" >&5
+echo "configure:3765: checking whether -fPIC is default" >&5
 if eval "test \"`echo '$''{'pic_default'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else