From 8564ad21d5bbb3e41ddbb083a44e3b67bc4b1439 Mon Sep 17 00:00:00 2001
From: law <law@138bc75d-0d04-0410-961f-82ee72b054a4>
Date: Sun, 10 May 1998 01:27:49 +0000
Subject:         * acconfig.h (HAVE_VOLATILE): Insert stub for autoconf.      
   * alocal.m4 (GCC_C_VOLATILE): New autoconf test.         * configure.in:
 Use GCC_C_VOLATILE.         * system.h (volatile): Define as empty if no
 volatile support is         available.         * genemit.c
 (output_add_clobbers): Removed unused variable 'i' from         generated
 fucntion.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@19653 138bc75d-0d04-0410-961f-82ee72b054a4
---
 gcc/aclocal.m4 | 10 ++++++++++
 1 file changed, 10 insertions(+)

(limited to 'gcc/aclocal.m4')

diff --git a/gcc/aclocal.m4 b/gcc/aclocal.m4
index 007fb5eb5f6..7149a2ab98a 100644
--- a/gcc/aclocal.m4
+++ b/gcc/aclocal.m4
@@ -143,6 +143,16 @@ fi
 AC_SUBST(LN)dnl
 ])
 
+dnl See whether the stage1 host compiler accepts the volatile keyword.
+AC_DEFUN(GCC_C_VOLATILE,
+[AC_CACHE_CHECK([for volatile], gcc_cv_c_volatile,
+[AC_TRY_COMPILE(, [volatile int foo;],
+        gcc_cv_c_volatile=yes, gcc_cv_c_volatile=no)])
+if test $gcc_cv_c_volatile = yes ; then
+  AC_DEFINE(HAVE_VOLATILE)
+fi
+])
+
 AC_DEFUN(EGCS_PROG_INSTALL,
 [AC_REQUIRE([AC_CONFIG_AUX_DIR_DEFAULT])dnl
 # Find a good install program.  We prefer a C program (faster),
-- 
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