From f4d98ff1b2d1e86221639fd7cd8fbca35efded63 Mon Sep 17 00:00:00 2001
From: Brent Cook <bcook@openbsd.org>
Date: Sun, 20 Jul 2014 14:45:26 -0500
Subject: conditionally disable -Wpointer-sign where supported

ok beck@
---
 configure.ac.tpl | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/configure.ac.tpl b/configure.ac.tpl
index cbd62a0..99c2f6f 100644
--- a/configure.ac.tpl
+++ b/configure.ac.tpl
@@ -44,6 +44,16 @@ AC_PROG_LIBTOOL
 AC_PROG_CC_STDC
 AM_PROG_CC_C_O
 
+save_cflags="$CFLAGS"
+CFLAGS=-Wno-pointer-sign
+AC_MSG_CHECKING([whether CC supports -Wno-pointer-sign])
+AC_COMPILE_IFELSE([AC_LANG_PROGRAM([])],
+	[AC_MSG_RESULT([yes])]
+	[AM_CFLAGS=-Wno-pointer-sign],
+	[AC_MSG_RESULT([no])]
+)
+CFLAGS="$save_cflags $AM_CFLAGS"
+
 AC_CHECK_FUNC(strlcpy,[AC_SEARCH_LIBS(strlcpy,, [NO_STRLCPY=],
 			  [NO_STRLCPY=yes])], [NO_STRLCPY=yes])
 AC_SUBST(NO_STRLCPY)
-- 
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