Re-establich configury checking for -Wno-pointer-sign. We need that
flag to compile pref/tinycc.c. Sigh.
git-svn-id: svn://svn.valgrind.org/valgrind/trunk@13126 a5019735-40e9-0310-863c-91ae7b9d1cf9
diff --git a/configure.in b/configure.in
index a8a12e5..17deedd 100644
--- a/configure.in
+++ b/configure.in
@@ -1397,6 +1397,26 @@
AC_SUBST(PREFERRED_STACK_BOUNDARY)
+# does this compiler support -Wno-pointer-sign ?
+AC_MSG_CHECKING([if gcc accepts -Wno-pointer-sign])
+
+safe_CFLAGS=$CFLAGS
+CFLAGS="-Wno-pointer-sign"
+
+AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[]], [[
+ return 0;
+]])], [
+no_pointer_sign=yes
+AC_MSG_RESULT([yes])
+], [
+no_pointer_sign=no
+AC_MSG_RESULT([no])
+])
+CFLAGS=$safe_CFLAGS
+
+AM_CONDITIONAL(HAS_POINTER_SIGN_WARNING, test x$no_pointer_sign = xyes)
+
+
# does this compiler support -Wno-empty-body ?
AC_MSG_CHECKING([if gcc accepts -Wno-empty-body])