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2011-12-07	Magnus Granberg		<zorry@gentoo.org>, Anthony G. Basile	<basile@opensource.dyc.edu>

		* configure		Add --enable-esp.  Add-fno-stack-protector
		to stage1_cflags.
		* gcc/configure		Add --enable-esp. Check -z now and -z relro.
		Define ENABLE_ESP.
		Check if we support crtbeginP and define ENABLE_CRTBEGINP.
		* libmudflap/configure		Add AC_SUBST enable_esp.


--- configure	2010-01-31 13:12:21.000000000 -0500
+++ configure	2010-02-07 14:29:51.000000000 -0500
@@ -707,6 +707,7 @@
 CFLAGS
 CC
 target_subdir
+enable_esp
 host_subdir
 build_subdir
 build_libsubdir
@@ -934,6 +934,11 @@
   --enable-FEATURE[=ARG]  include FEATURE [ARG=yes]
   --enable-gold           use gold instead of ld
   --enable-libada         build libada directory
+  --enable-esp
+			   Enable Stack protector, Position independent executable as
+			   default if we have suppot for it when compiling
+			   and link with -z relro and -z now as default.
+			   Linux targets supported i*86, x86_64, powerpc, powerpc64, ia64 and arm
   --enable-libssp         build libssp directory
   --disable-ppl-version-check    disable check for PPL version
   --disable-cloog-version-check  disable check for CLooG version
@@ -2145,6 +2150,25 @@
   noconfigdirs="$noconfigdirs gnattools"
 fi
 
+# Check whether --enable-esp was given and target have the support.
+# Check whether --enable-esp or --disable-esp was given.
+if test "${enable_esp+set}" = set; then
+  enableval="$enable_esp"
+
+  case $target in
+    i?86*-*-linux* | x86_64*-*-linux* | powerpc-*-linux* | powerpc64-*-linux* | arm*-*-linux* | ia64-*-linux*)
+      enable_esp=yes
+      ;;
+    *)
+      { { echo "$as_me:$LINENO: error: *** --enable-esp is not supported on this $target target." >&5
+echo "$as_me: error: *** --enable-esp is not supported on this $target target." >&2;}
+   { (exit 1); exit 1; }; }
+      ;;
+  esac
+
+fi;
+
+
 # Check whether --enable-libssp was given.
 if test "${enable_libssp+set}" = set; then :
   enableval=$enable_libssp; ENABLE_LIBSSP=$enableval
@@ -14266,6 +14290,9 @@
       *) stage1_cflags="-g -J" ;;
     esac ;;
 esac
+if test x$enable_esp = xyes; then
+       stage1_cflags="$stage1_cflags -fno-stack-protector"
+fi
 
 # This is aimed to mimic bootstrap with a non-GCC compiler to catch problems.
 if test "$GCC" = yes -a "$ENABLE_BUILD_WITH_CXX" != yes; then
--- gcc/configure	2010-01-31 10:01:53.000000000 -0500
+++ gcc/configure	2010-02-07 14:29:56.000000000 -0500
@@ -678,6 +678,8 @@
 HOST_LIBS
 GGC
 libgcc_visibility
+enable_esp
+enable_crtbeginP
 gcc_cv_readelf
 gcc_cv_objdump
 ORIGINAL_NM_FOR_TARGET
@@ -24480,6 +24481,50 @@
     ;;
 esac
 
+echo "$as_me:$LINENO: checking linker -z now support" >&5
+echo $ECHO_N "checking linker -z now support... $ECHO_C" >&6
+if test "${gcc_cv_ld_now+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  gcc_cv_ld_now=no
+if test $in_tree_ld = yes ; then
+  if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
+     && test $in_tree_ld_is_elf = yes; then
+    gcc_cv_ld_now=yes
+  fi
+elif test x$gcc_cv_ld != x; then
+       # Check if linker supports -z now options
+       if $gcc_cv_ld --help 2>/dev/null | grep now > /dev/null; then
+               gcc_cv_ld_now=yes
+       fi
+fi
+
+fi
+echo "$as_me:$LINENO: result: $gcc_cv_ld_now" >&5
+echo "${ECHO_T}$gcc_cv_ld_now" >&6
+
+echo "$as_me:$LINENO: checking linker -z relro support" >&5
+echo $ECHO_N "checking linker -z relro support... $ECHO_C" >&6
+if test "${gcc_cv_ld_relro+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  gcc_cv_ld_relro=no
+if test $in_tree_ld = yes ; then
+  if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
+     && test $in_tree_ld_is_elf = yes; then
+    gcc_cv_ld_relro=yes
+  fi
+elif test x$gcc_cv_ld != x; then
+       # Check if linker supports -z relro and -z norelro options
+       if $gcc_cv_ld --help 2>/dev/null | grep relro > /dev/null; then
+               gcc_cv_ld_relro=yes
+       fi
+fi
+
+fi
+echo "$as_me:$LINENO: result: $gcc_cv_ld_relro" >&5
+echo "${ECHO_T}$gcc_cv_ld_relro" >&6
+
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking linker --build-id support" >&5
 $as_echo_n "checking linker --build-id support... " >&6; }
 if test "${gcc_cv_ld_buildid+set}" = set; then :
@@ -24411,6 +23745,74 @@
 
 fi
 
+if test x$enable_esp = xyes ; then
+case $target in
+		ia64*-*-linux*)
+			if test x$gcc_cv_ld_now = xyes; then
+				enable_esp_ld=yes
+			else
+				enable_esp_ld=no
+			fi
+			;;
+		*-*-linux*)
+			if test x$gcc_cv_ld_relro = xyes && test x$gcc_cv_ld_now = xyes; then
+				enable_esp_ld=yes
+			else
+				enable_esp_ld=no
+			fi
+			;;
+		*)
+			enable_esp_ld=no
+			;;
+	esac
+else
+	enable_espf_ld=no
+fi
+if test x$enable_esp_ld = xyes; then
+
+cat >>confdefs.h <<\_ACEOF
+#define ENABLE_ESP 1
+_ACEOF
+
+fi
+
+if test x$enable_esp = xyes && test x$enable_esp_ld = xno; then
+	{ { echo "$as_me:$LINENO: error: *** --enable-esp is not supported. You don't have -z,relro or -z,now support in the linker." >&5
+echo "$as_me: error: *** --enable-esp is not supported. You don't have -z,relro or -z,now support in the linker." >&2;}
+   { (exit 1); exit 1; }; }
+fi
+
+echo "$as_me:$LINENO: checking for crtbeginP.o support" >&5
+echo $ECHO_N "checking for crtbeginP.o support... $ECHO_C" >&6
+if test "${enable_crtbeginP+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+
+if test x$enable_esp = xyes ; then
+	case "$target" in
+	  ia64*-*-linux*)
+			enable_crtbeginP=no ;;
+      *-*-linux*)
+		if test x$gcc_cv_ld_pie = xyes && test x$lt_cv_prog_compiler_static_works = xyes; then
+			enable_crtbeginP=yes
+     	fi
+		;;
+  	  *) enable_crtbeginP=no ;;
+    esac
+fi
+
+fi
+echo "$as_me:$LINENO: result: $enable_crtbeginP" >&5
+echo "${ECHO_T}$enable_crtbeginP" >&6
+
+if test x$enable_crtbeginP = xyes; then
+
+cat >>confdefs.h <<\_ACEOF
+#define ENABLE_CRTBEGINP 1
+_ACEOF
+
+fi
+
 # Check if TFmode long double should be used by default or not.
 # Some glibc targets used DFmode long double, but with glibc 2.4
 # and later they can use TFmode.
--- libmudflap/configure	2009-12-05 12:18:53.000000000 -0500
+++ libmudflap/configure	2010-02-07 14:29:51.000000000 -0500
@@ -652,6 +652,7 @@
 MAINTAINER_MODE_FALSE
 MAINTAINER_MODE_TRUE
 am__untar
+enable_esp
 am__tar
 AMTAR
 am__leading_dot