From 1d78fb83f0d0c05d0d0bd8b4bbb53747fc55778d Mon Sep 17 00:00:00 2001
From: Alexander Neundorf <neundorf@kde.org>
Date: Wed, 25 Jan 2006 20:41:54 +0000
Subject: add the stuff moved from kdesdk, maybe...

Alex

svn path=/trunk/KDE/kdelibs/; revision=502383
---
 modules/CheckPrototypeExists.cmake | 17 +++++++++++++----
 1 file changed, 13 insertions(+), 4 deletions(-)

(limited to 'modules/CheckPrototypeExists.cmake')

diff --git a/modules/CheckPrototypeExists.cmake b/modules/CheckPrototypeExists.cmake
index 4797865f..38d9d6ba 100644
--- a/modules/CheckPrototypeExists.cmake
+++ b/modules/CheckPrototypeExists.cmake
@@ -6,11 +6,20 @@
 #  VARIABLE - variable to store the result
 #
 
-INCLUDE(CheckTypeSize)
+INCLUDE(CheckCXXSourceCompiles)
 
 MACRO(CHECK_PROTOTYPE_EXISTS _SYMBOL _HEADER _RESULT)
-   SET(CMAKE_EXTRA_INCLUDE_FILES ${_HEADER})
-   CHECK_TYPE_SIZE(${_SYMBOL} ${_RESULT})
-   SET(CMAKE_EXTRA_INCLUDE_FILES)
+   SET(_CHECK_PROTO_EXISTS_SOURCE_CODE "
+#include <${_HEADER}>
+void cmakeRequireSymbol(int dummy,...){(void)dummy;}
+int main()
+{
+#ifndef ${_SYMBOL}
+  cmakeRequireSymbol(0,&${_SYMBOL});
+#endif
+  return 0;
+}
+")
+   CHECK_CXX_SOURCE_COMPILES("${_CHECK_PROTO_EXISTS_SOURCE_CODE}" ${_RESULT})
 ENDMACRO(CHECK_PROTOTYPE_EXISTS _SYMBOL _HEADER _RESULT)
 
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