From 68b92f787e534dd1a1fff4e239fdf9e9f6aeb88c Mon Sep 17 00:00:00 2001
From: Roger Sayle <roger@eyesopen.com>
Date: Thu, 2 Nov 2006 00:56:38 +0000
Subject: configure.ac (HAVE_AS_IX86_DIFF_SECT_DELTA): New test to determine
 whether the assembler supports taking the difference of...

	* configure.ac (HAVE_AS_IX86_DIFF_SECT_DELTA): New test to determine
	whether the assembler supports taking the difference of symbols in
	different sections.  On x86/Solaris, GAS does but Solaris as doesn't.
	* configure: Regenerate.
	* config.in: Regenerate.
	* config/i386/sol2-10.h (JUMP_TABLES_IN_TEXT_SECTION): Define if
	the assembler doesn't support taking the difference of symbols in
	different sections, i.e. we're using the native solaris assembler.

From-SVN: r118405
---
 gcc/configure | 39 +++++++++++++++++++++++++++++++++++++++
 1 file changed, 39 insertions(+)

(limited to 'gcc/configure')

diff --git a/gcc/configure b/gcc/configure
index 2e2b0bc..582e37b 100755
--- a/gcc/configure
+++ b/gcc/configure
@@ -15253,6 +15253,45 @@ _ACEOF
 
 fi
 
+    echo "$as_me:$LINENO: checking assembler for different section symbol subtraction" >&5
+echo $ECHO_N "checking assembler for different section symbol subtraction... $ECHO_C" >&6
+if test "${gcc_cv_as_ix86_diff_sect_delta+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  gcc_cv_as_ix86_diff_sect_delta=no
+  if test x$gcc_cv_as != x; then
+    echo '.section .rodata
+.L1:
+        .long .L2-.L1
+        .long .L3-.L1
+        .text
+.L3:    nop
+.L2:    nop' > conftest.s
+    if { ac_try='$gcc_cv_as  -o conftest.o conftest.s >&5'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }
+    then
+	gcc_cv_as_ix86_diff_sect_delta=yes
+    else
+      echo "configure: failed program was" >&5
+      cat conftest.s >&5
+    fi
+    rm -f conftest.o conftest.s
+  fi
+fi
+echo "$as_me:$LINENO: result: $gcc_cv_as_ix86_diff_sect_delta" >&5
+echo "${ECHO_T}$gcc_cv_as_ix86_diff_sect_delta" >&6
+if test $gcc_cv_as_ix86_diff_sect_delta = yes; then
+
+cat >>confdefs.h <<\_ACEOF
+#define HAVE_AS_IX86_DIFF_SECT_DELTA 1
+_ACEOF
+
+fi
+
     # This one is used unconditionally by i386.[ch]; it is to be defined
     # to 1 if the feature is present, 0 otherwise.
     echo "$as_me:$LINENO: checking assembler for GOTOFF in data" >&5
-- 
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