From 701ef1d8829a0f479705e3d7f432e105dbabe432 Mon Sep 17 00:00:00 2001
From: Gerald Pfeifer <gerald@pfeifer.com>
Date: Mon, 28 Jan 2008 01:28:59 +0100
Subject: [PATCH] configure: Use GCC's -Wtype-limits if possible.

---
 configure    | 58 ++++++++++++++++++++++++++++++++++++++++++++++++++++
 configure.ac |  1 +
 2 files changed, 59 insertions(+)

diff --git a/configure b/configure
index 39b320a938a..47f55fc87b9 100755
--- a/configure
+++ b/configure
@@ -16077,6 +16077,64 @@ if test $ac_cv_cflags__Wwrite_strings = yes; then
   EXTRACFLAGS="$EXTRACFLAGS -Wwrite-strings"
 fi
 
+  { echo "$as_me:$LINENO: checking whether the compiler supports -Wtype-limits" >&5
+echo $ECHO_N "checking whether the compiler supports -Wtype-limits... $ECHO_C" >&6; }
+if test "${ac_cv_cflags__Wtype_limits+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  ac_wine_try_cflags_saved=$CFLAGS
+CFLAGS="$CFLAGS -Wtype-limits"
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+
+int
+main ()
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (ac_try="$ac_link"
+case "(($ac_try" in
+  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+  *) ac_try_echo=$ac_try;;
+esac
+eval "echo \"\$as_me:$LINENO: $ac_try_echo\"") >&5
+  (eval "$ac_link") 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } && {
+	 test -z "$ac_c_werror_flag" ||
+	 test ! -s conftest.err
+       } && test -s conftest$ac_exeext &&
+       $as_test_x conftest$ac_exeext; then
+  ac_cv_cflags__Wtype_limits=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+	ac_cv_cflags__Wtype_limits=no
+fi
+
+rm -f core conftest.err conftest.$ac_objext conftest_ipa8_conftest.oo \
+      conftest$ac_exeext conftest.$ac_ext
+CFLAGS=$ac_wine_try_cflags_saved
+fi
+{ echo "$as_me:$LINENO: result: $ac_cv_cflags__Wtype_limits" >&5
+echo "${ECHO_T}$ac_cv_cflags__Wtype_limits" >&6; }
+if test $ac_cv_cflags__Wtype_limits = yes; then
+  EXTRACFLAGS="$EXTRACFLAGS -Wtype-limits"
+fi
+
 
     saved_CFLAGS="$CFLAGS"
   CFLAGS="$CFLAGS -Wpointer-arith -Werror"
diff --git a/configure.ac b/configure.ac
index 2de529391f0..21f07c6f245 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1211,6 +1211,7 @@ then
   WINE_TRY_CFLAGS([-fno-strict-aliasing])
   WINE_TRY_CFLAGS([-Wdeclaration-after-statement])
   WINE_TRY_CFLAGS([-Wwrite-strings])
+  WINE_TRY_CFLAGS([-Wtype-limits])
 
   dnl Check for noisy string.h
   saved_CFLAGS="$CFLAGS"