configure.ac (gcc_cv_ld_eh_frame_hdr): Only check GNU ld for --eh-frame-hdr.

	* configure.ac (gcc_cv_ld_eh_frame_hdr): Only check GNU ld for
	--eh-frame-hdr.
	Check for working Sun ld version.
	(HAVE_LD_EH_FRAME_HDR): Adapt comment.
	(glibc_header_dir): Set only once.
	Rename to ...
	(target_header_dir): ... this.
	Adapt users.
	(gcc_cv_target_dl_iterate_frame_hdr): Check on *-*-solaris2*.
	(TARGET_DL_ITERATE_PHDR): Define if present.
	* configure: Regenerate.
	* config.in: Likewise.
	* config/t-sol2 (LIB2ADDEH, LIB2ADDEHDEP): Define.
	* crtstuff.c (USE_PT_GNU_EH_FRAME): Define for recent Solaris 11
	with linker support and dl_iterate_phdr.
	* unwind-dw2-fde-glibc.c (USE_PT_GNU_EH_FRAME): Likewise.
	(_Unwind_IteratePhdrCallback) [PT_SUNW_UNWIND]: Also accept
	PT_SUNW_UNWIND .eh_frame_hdr sections.
	[CRT_GET_RFIB_DATA && __i386__ && __sun__ && __svr4__]: Add
	load_base to data->dbase.
	[CRT_GET_RFIB_DATA && __x86_64__ && __sun__ && __svr4__]: Handle
	64-bit Solaris 10+/x86.
	* config/sol2-gld.h [TARGET_DL_ITERATE_PHDR && HAVE_LD_EH_FRAME_HDR]
	(LINK_EH_SPEC): Define.

From-SVN: r168204

1 files changed, 64 insertions, 41 deletions

diff --git a/gcc/configure b/gcc/configure
index 9d76b41..1c95830 100755
--- a/gcc/configure
+++ b/gcc/configure
@@ -25271,10 +25271,21 @@ if test $in_tree_ld = yes ; then
     gcc_cv_ld_eh_frame_hdr=yes
   fi
 elif test x$gcc_cv_ld != x; then
-	# Check if linker supports --eh-frame-hdr option
-	if $gcc_cv_ld --help 2>/dev/null | grep eh-frame-hdr > /dev/null; then
-		gcc_cv_ld_eh_frame_hdr=yes
-	fi
+  if echo "$ld_ver" | grep GNU > /dev/null; then
+    # Check if linker supports --eh-frame-hdr option
+    if $gcc_cv_ld --help 2>/dev/null | grep eh-frame-hdr > /dev/null; then
+      gcc_cv_ld_eh_frame_hdr=yes
+    fi
+  else
+    case "$target" in
+      *-*-solaris2*)
+        # Sun ld has various bugs in .eh_frame_hdr support before version 1.2249.
+        if test "$ld_vers_major" -gt 1 || test "$ld_vers_minor" -ge 2249; then
+          gcc_cv_ld_eh_frame_hdr=yes
+        fi
+        ;;
+    esac
+  fi
 fi
 
 if test x"$gcc_cv_ld_eh_frame_hdr" = xyes; then
@@ -25616,6 +25627,22 @@ _ACEOF
 
 fi
 
+if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x; then
+  if test "x$with_headers" != x; then
+    target_header_dir=$with_headers
+  elif test "x$with_sysroot" = x; then
+    target_header_dir="${exec_prefix}/${target_noncanonical}/sys-include"
+  elif test "x$with_build_sysroot" != "x"; then
+    target_header_dir="${with_build_sysroot}/usr/include"
+  elif test "x$with_sysroot" = xyes; then
+    target_header_dir="${exec_prefix}/${target_noncanonical}/sys-root/usr/include"
+  else
+    target_header_dir="${with_sysroot}/usr/include"
+  fi
+else
+  target_header_dir=/usr/include
+fi
+
 # Test for stack protector support in target C library.
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking __stack_chk_fail in target C library" >&5
 $as_echo_n "checking __stack_chk_fail in target C library... " >&6; }
@@ -25625,39 +25652,24 @@ else
   gcc_cv_libc_provides_ssp=no
     case "$target" in
        *-*-linux* | *-*-kfreebsd*-gnu | *-*-knetbsd*-gnu)
-      if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x; then
-	if test "x$with_headers" != x; then
-	  glibc_header_dir=$with_headers
-	elif test "x$with_sysroot" = x; then
-	  glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-include"
-	elif test "x$with_build_sysroot" != "x"; then
-	  glibc_header_dir="${with_build_sysroot}/usr/include"
-	elif test "x$with_sysroot" = xyes; then
-	  glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-root/usr/include"
-	else
-	  glibc_header_dir="${with_sysroot}/usr/include"
-	fi
-      else
-	glibc_header_dir=/usr/include
-      fi
       # glibc 2.4 and later provides __stack_chk_fail and
       # either __stack_chk_guard, or TLS access to stack guard canary.
-      if test -f $glibc_header_dir/features.h \
+      if test -f $target_header_dir/features.h \
 	 && $EGREP '^[ 	]*#[ 	]*define[ 	]+__GNU_LIBRARY__[ 	]+([1-9][0-9]|[6-9])' \
-	    $glibc_header_dir/features.h > /dev/null; then
+	    $target_header_dir/features.h > /dev/null; then
 	if $EGREP '^[ 	]*#[ 	]*define[ 	]+__GLIBC__[ 	]+([1-9][0-9]|[3-9])' \
-	   $glibc_header_dir/features.h > /dev/null; then
+	   $target_header_dir/features.h > /dev/null; then
 	  gcc_cv_libc_provides_ssp=yes
 	elif $EGREP '^[ 	]*#[ 	]*define[ 	]+__GLIBC__[ 	]+2' \
-	     $glibc_header_dir/features.h > /dev/null \
+	     $target_header_dir/features.h > /dev/null \
 	     && $EGREP '^[ 	]*#[ 	]*define[ 	]+__GLIBC_MINOR__[ 	]+([1-9][0-9]|[4-9])' \
-	     $glibc_header_dir/features.h > /dev/null; then
+	     $target_header_dir/features.h > /dev/null; then
 	  gcc_cv_libc_provides_ssp=yes
 	elif $EGREP '^[ 	]*#[ 	]*define[ 	]+__UCLIBC__[ 	]+1' \
-	     $glibc_header_dir/features.h > /dev/null && \
-	     test -f $glibc_header_dir/bits/uClibc_config.h && \
+	     $target_header_dir/features.h > /dev/null && \
+	     test -f $target_header_dir/bits/uClibc_config.h && \
 	     $EGREP '^[ 	]*#[ 	]*define[ 	]+__UCLIBC_HAS_SSP__[ 	]+1' \
-	     $glibc_header_dir/bits/uClibc_config.h > /dev/null; then
+	     $target_header_dir/bits/uClibc_config.h > /dev/null; then
 	  gcc_cv_libc_provides_ssp=yes
 	fi
       fi
@@ -25704,21 +25716,8 @@ if test "${with_long_double_128+set}" = set; then :
   withval=$with_long_double_128; gcc_cv_target_ldbl128="$with_long_double_128"
 else
   gcc_cv_target_ldbl128=no
-      if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x; then
-	if test "x$with_sysroot" = x; then
-	  glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-include"
-	elif test "x$with_build_sysroot" != "x"; then
-	  glibc_header_dir="${with_build_sysroot}/usr/include"
-	elif test "x$with_sysroot" = xyes; then
-	  glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-root/usr/include"
-	else
-	  glibc_header_dir="${with_sysroot}/usr/include"
-	fi
-      else
-	glibc_header_dir=/usr/include
-      fi
       grep '^[ 	]*#[ 	]*define[ 	][ 	]*__LONG_DOUBLE_MATH_OPTIONAL' \
-        $glibc_header_dir/bits/wordsize.h > /dev/null 2>&1 \
+        $target_header_dir/bits/wordsize.h > /dev/null 2>&1 \
       && gcc_cv_target_ldbl128=yes
 
 fi
@@ -25731,6 +25730,30 @@ $as_echo "#define TARGET_DEFAULT_LONG_DOUBLE_128 1" >>confdefs.h
 
 fi
 
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking dl_iterate_phdr in target C library" >&5
+$as_echo_n "checking dl_iterate_phdr in target C library... " >&6; }
+gcc_cv_target_dl_iterate_phdr=unknown
+case "$target" in
+  *-*-solaris2*)
+    # <link.h> needs both a dl_iterate_phdr declaration and support for
+    # compilation with largefile support.
+    if grep dl_iterate_phdr $target_header_dir/link.h > /dev/null 2>&1 \
+      && grep 'large file capable' $target_header_dir/link.h > /dev/null 2>&1; then
+      gcc_cv_target_dl_iterate_phdr=yes
+    else
+      gcc_cv_target_dl_iterate_phdr=no
+    fi
+    ;;
+esac
+
+if test x$gcc_cv_target_dl_iterate_phdr = xyes; then
+
+$as_echo "#define TARGET_DL_ITERATE_PHDR 1" >>confdefs.h
+
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $gcc_cv_target_dl_iterate_phdr" >&5
+$as_echo "$gcc_cv_target_dl_iterate_phdr" >&6; }
+
 # Find out what GC implementation we want, or may, use.
 
 # Check whether --with-gc was given.