X-Git-Url: http://git.sourceforge.jp/view?a=blobdiff_plain;f=gcc%2Fconfigure.ac;h=c067770cb5935f6e2eedd9e6217fb0260213516a;hb=49b6dba67f06de2ec02bf958c556fc34b171408e;hp=0ffa8f630fe94e1c85175905b28f347a2909b7c3;hpb=ae74c4915e42582ba8b8127b6fdf64de0d0ad62b;p=pf3gnuchains%2Fgcc-fork.git

diff --git a/gcc/configure.ac b/gcc/configure.ac
index 0ffa8f630fe..c067770cb59 100644
--- a/gcc/configure.ac
+++ b/gcc/configure.ac
@@ -2005,6 +2005,29 @@ else
 	AC_MSG_RESULT($gcc_cv_objdump)
 fi
 
+# Figure out what readelf we will be using.
+AS_VAR_SET_IF(gcc_cv_readelf,, [
+if test -f $gcc_cv_binutils_srcdir/configure.in \
+     && test -f ../binutils/Makefile \
+     && test x$build = x$host; then
+	# Single tree build which includes binutils.
+	gcc_cv_readelf=../binutils/readelf$build_exeext
+elif test -x readelf$build_exeext; then
+	gcc_cv_readelf=./readelf$build_exeext
+else
+        AC_PATH_PROG(gcc_cv_readelf, readelf)
+fi])
+
+AC_MSG_CHECKING(what readelf to use)
+if test "$gcc_cv_readelf" = ../binutils/readelf$build_exeext; then
+	# Single tree build which includes binutils.
+	AC_MSG_RESULT(newly built readelf)
+elif test x$gcc_cv_readelf = x; then
+	AC_MSG_RESULT(not found)
+else
+	AC_MSG_RESULT($gcc_cv_readelf)
+fi
+
 # Figure out what assembler alignment features are present.
 gcc_GAS_CHECK_FEATURE([.balign and .p2align], gcc_cv_as_balign_and_p2align,
  [2,6,0],,
@@ -2081,10 +2104,10 @@ AC_CACHE_CHECK(linker for .hidden support, gcc_cv_ld_hidden,
      gcc_cv_ld_hidden=yes
   fi
 else
+changequote(,)dnl
   gcc_cv_ld_hidden=yes
   ld_ver=`$gcc_cv_ld --version 2>/dev/null | sed 1q`
   if echo "$ld_ver" | grep GNU > /dev/null; then
-changequote(,)dnl
     ld_vers=`echo $ld_ver | sed -n \
 	-e 's,^.*[	 ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
     ld_date=`echo $ld_ver | sed -n 's,^.*\([2-9][0-9][0-9][0-9]\)[-]*\([01][0-9]\)[-]*\([0-3][0-9]\).*$,\1\2\3,p'`
@@ -2108,18 +2131,21 @@ changequote(,)dnl
 	  gcc_cv_ld_hidden=no
 	fi
       fi
-changequote([,])dnl
     fi
   else
     case "${target}" in
       hppa64*-*-hpux* | ia64*-*-hpux*)
 	gcc_cv_ld_hidden=yes
 	;;
+      *-*-solaris2.9* | *-*-solaris2.1[0-9]*)
+        gcc_cv_ld_hidden=yes
+	;;
       *)
 	gcc_cv_ld_hidden=no
 	;;
     esac
   fi
+changequote([,])dnl
 fi])
 libgcc_visibility=no
 AC_SUBST(libgcc_visibility)
@@ -2234,8 +2260,30 @@ gcc_GAS_CHECK_FEATURE([cfi directives], gcc_cv_as_cfi_directive,
     gcc_cv_as_cfi_directive=yes
     ;;
 esac])
+if test $gcc_cv_as_cfi_directive = yes && test x$gcc_cv_readelf != x; then
+gcc_GAS_CHECK_FEATURE([working cfi advance], gcc_cv_as_cfi_advance_working,
+  ,,
+[	.text
+	.cfi_startproc
+	.cfi_adjust_cfa_offset 64
+	.skip 512, 0
+	.cfi_adjust_cfa_offset 128
+	.cfi_endproc],
+[
+changequote(,)dnl
+if $gcc_cv_readelf -wf conftest.o 2>/dev/null \
+    | grep 'DW_CFA_advance_loc[12]:[ 	][ 	]*512[ 	]' >/dev/null; then
+   gcc_cv_as_cfi_advance_working=yes
+fi
+changequote([,])dnl
+])
+else
+  # no readelf, err on the side of caution
+  gcc_cv_as_cfi_advance_working=no
+fi
 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_DIRECTIVE,
-  [`if test $gcc_cv_as_cfi_directive = yes; then echo 1; else echo 0; fi`],
+  [`if test $gcc_cv_as_cfi_directive = yes \
+       && test $gcc_cv_as_cfi_advance_working = yes; then echo 1; else echo 0; fi`],
   [Define 0/1 if your assembler supports CFI directives.])
 
 gcc_GAS_CHECK_FEATURE([cfi personality directive],