From 6cd4433d3e6ada0e04d1a36ddd1c574a4cba09fe Mon Sep 17 00:00:00 2001
From: proski <proski@localhost>
Date: Thu, 10 Apr 2008 22:26:50 +0000
Subject: [PATCH] 2008-04-10  Pavel Roskin  <proski@gnu.org>

	* configure.ac: Always use "_cv_" in cache variables for
	compatibility with Autoconf 2.62.
---
 ChangeLog    |  5 +++++
 configure.ac | 26 +++++++++++++-------------
 2 files changed, 18 insertions(+), 13 deletions(-)

diff --git a/ChangeLog b/ChangeLog
index 816315a20..b2464143f 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+2008-04-10  Pavel Roskin  <proski@gnu.org>
+
+	* configure.ac: Always use "_cv_" in cache variables for
+	compatibility with Autoconf 2.62.
+
 2008-03-28  Robert Millan  <rmh@aybabtu.com>
 
 	Surpass 1 TiB disk addressing limit.  Note: there are no plans to handle
diff --git a/configure.ac b/configure.ac
index 540691f3c..2c6e5c95e 100644
--- a/configure.ac
+++ b/configure.ac
@@ -86,13 +86,13 @@ if test "x$ac_cv_prog_gcc" = xyes; then
     fi
     STAGE1_CFLAGS="-O2"
     GRUB_CFLAGS="-O2"
-    AC_CACHE_CHECK([whether optimization for size works], size_flag, [
+    AC_CACHE_CHECK([whether optimization for size works], grub_cv_cc_Os, [
       saved_CFLAGS=$CFLAGS
       CFLAGS="-Os -g"
-      AC_TRY_COMPILE(, , size_flag=yes, size_flag=no)
+      AC_TRY_COMPILE(, , grub_cv_cc_Os=yes, grub_cv_cc_Os=no)
       CFLAGS=$saved_CFLAGS
     ])
-    if test "x$size_flag" = xyes; then
+    if test "x$grub_cv_cc_Os" = xyes; then
       STAGE2_CFLAGS="-Os"
     else
       STAGE2_CFLAGS="-O2 -fno-strength-reduce -fno-unroll-loops"
@@ -100,16 +100,16 @@ if test "x$ac_cv_prog_gcc" = xyes; then
     # OpenBSD has a GCC extension for protecting applications from
     # stack smashing attacks, but GRUB doesn't want this feature.
     AC_CACHE_CHECK([whether gcc has -fno-stack-protector],
-		   no_stack_protector_flag, [
+		   grub_cv_cc_no_stack_protector, [
       saved_CFLAGS=$CFLAGS
       CFLAGS="-fno-stack-protector"
       AC_TRY_COMPILE(,
 		     ,
-		     no_stack_protector_flag=yes,
-		     no_stack_protector_flag=no)
+		     grub_cv_cc_no_stack_protector=yes,
+		     grub_cv_cc_no_stack_protector=no)
       CFLAGS=$saved_CFLAGS
     ])
-    if test "x$no_stack_protector_flag" = xyes; then
+    if test "x$grub_cv_cc_no_stack_protector" = xyes; then
       STAGE2_CFLAGS="$STAGE2_CFLAGS -fno-stack-protector"
     fi
   fi
@@ -123,30 +123,30 @@ AC_SUBST(GRUB_CFLAGS)
 CPPFLAGS="$CPPFLAGS -Wall -Wmissing-prototypes -Wunused -Wshadow"
 CPPFLAGS="$CPPFLAGS -Wpointer-arith"
 
-AC_CACHE_CHECK([whether -Wundef works], undef_flag, [
+AC_CACHE_CHECK([whether -Wundef works], grub_cv_cc_Wundef, [
   saved_CPPFLAGS="$CPPFLAGS"
   CPPFLAGS="-Wundef"
-  AC_TRY_COMPILE(, , undef_flag=yes, undef_flag=no)
+  AC_TRY_COMPILE(, , grub_cv_cc_Wundef=yes, grub_cv_cc_Wundef=no)
   CPPFLAGS="$saved_CPPFLAGS"
 ])
 
 # The options `-falign-*' are supported by gcc 3.0 or later.
 # Probably it is sufficient to only check for -falign-loops.
-AC_CACHE_CHECK([whether -falign-loops works], [falign_loop_flag], [
+AC_CACHE_CHECK([whether -falign-loops works], [grub_cv_cc_falign_loop], [
   saved_CPPFLAGS="$CPPFLAGS"
   CPPFLAGS="-falign-loops=1"
-  AC_TRY_COMPILE(, , [falign_loop_flag=yes], [falign_loop_flag=no])
+  AC_TRY_COMPILE(, , [grub_cv_cc_falign_loop=yes], [grub_cv_cc_falign_loop=no])
   CPPFLAGS="$saved_CPPFLAGS"
 ])
 
 # Force no alignment to save space.
-if test "x$falign_loop_flag" = xyes; then
+if test "x$grub_cv_cc_falign_loop" = xyes; then
   CPPFLAGS="$CPPFLAGS -falign-jumps=1 -falign-loops=1 -falign-functions=1"
 else
   CPPFLAGS="$CPPFLAGS -malign-jumps=1 -malign-loops=1 -malign-functions=1"
 fi
 
-if test "x$undef_flag" = xyes; then
+if test "x$grub_cv_cc_Wundef" = xyes; then
   CPPFLAGS="$CPPFLAGS -Wundef"
 fi