From 6724242cf15bfb9987ff5dfe00fe95667f42f0f9 Mon Sep 17 00:00:00 2001
From: Daniel Stenberg <daniel@haxx.se>
Date: Thu, 3 Nov 2016 23:37:59 +0100
Subject: [PATCH] configure: verify that compiler groks
 -Werror=partial-availability

Reported-by: bemoody

Fixes #1104
---
 acinclude.m4 | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/acinclude.m4 b/acinclude.m4
index f959e3d43..2abae8d8a 100644
--- a/acinclude.m4
+++ b/acinclude.m4
@@ -3232,7 +3232,14 @@ AC_DEFUN([CURL_MAC_CFLAGS], [
     else
       AC_MSG_RESULT([$min set])
     fi
+
+    old_CFLAGS=$CFLAGS
     CFLAGS="$CFLAGS -Werror=partial-availability"
+    AC_MSG_CHECKING([whether $CC accepts -Werror=partial-availability])
+    AC_COMPILE_IFELSE([AC_LANG_PROGRAM()],
+      [AC_MSG_RESULT([yes])],
+      [AC_MSG_RESULT([no])
+      CFLAGS=$old_CFLAGS])
   fi
 
 ])