From 7892c2e65369062da328b798a97f9409d7559d94 Mon Sep 17 00:00:00 2001
From: Chris Robinson <chris.kcat@gmail.com>
Date: Thu, 6 Dec 2007 21:50:28 -0800
Subject: [PATCH] Test for -W switch

---
 CMakeLists.txt | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 7de8ae76..b5721a0e 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -51,7 +51,12 @@ SET(EXTRA_LIBS m ${EXTRA_LIBS})
 IF("${MSVC}")
     # ???
 ELSE()
-    ADD_DEFINITIONS(-W -Wall)
+    CHECK_C_COMPILER_FLAG(-W HAVE_W_SWITCH)
+    IF("${HAVE_W_SWITCH}")
+        ADD_DEFINITIONS(-W)
+    ENDIF()
+
+    ADD_DEFINITIONS(-Wall)
     IF(WERROR)
         ADD_DEFINITIONS(-Werror)
     ENDIF()