From 0ba48793ea260849afd67d57bd73104c502e1687 Mon Sep 17 00:00:00 2001
From: ThorstenB <brehmt@gmail.com>
Date: Sun, 19 Feb 2012 22:12:52 +0100
Subject: [PATCH] Disable OSG dependencies to osg/Vec2 for simgear compile
 test.

---
 CMakeModules/FindSimGear.cmake | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/CMakeModules/FindSimGear.cmake b/CMakeModules/FindSimGear.cmake
index 409490426..0be68ba0d 100644
--- a/CMakeModules/FindSimGear.cmake
+++ b/CMakeModules/FindSimGear.cmake
@@ -231,6 +231,8 @@ SET(CMAKE_REQUIRED_INCLUDES ${SIMGEAR_INCLUDE_DIR})
 # clear cache, run a fresh compile test every time
 unset(SIMGEAR_COMPILE_TEST CACHE)
 
+# disable OSG dependencies for test-compiling
+set(CMAKE_REQUIRED_DEFINITIONS "-DNO_OPENSCENEGRAPH_INTERFACE")
 check_cxx_source_runs(
     "#include <cstdio>
     #include \"simgear/version.h\"
@@ -266,6 +268,7 @@ if(NOT SIMGEAR_COMPILE_TEST)
     message(FATAL_ERROR "Oops, you have installed SimGear includes, however test compiling failed. "
             "Try removing 'CMakeCache.txt' and reconfigure with 'cmake'.")
 endif()
+unset(CMAKE_REQUIRED_DEFINITIONS)
 
 include(FindPackageHandleStandardArgs)
 FIND_PACKAGE_HANDLE_STANDARD_ARGS(SimGear DEFAULT_MSG