Added flag to make builds of tests optional via cmake flag

git-svn-id: http://www.openmesh.org/svnrepo/OpenMesh/trunk@541 fdac6126-5c0c-442c-9429-916003d36597

src/Unittests/CMakeLists.txt

@@ -5,6 +5,11 @@ include_directories (
   ${CMAKE_CURRENT_SOURCE_DIR}
 )
 
+if ( NOT DEFINED OPENMESH_BUILD_UNIT_TESTS)
+    set( OPENMESH_BUILD_UNIT_TESTS false CACHE BOOL "Enable or disable unit test builds in OpenMesh." )
+endif()
+
+if ( OPENMESH_BUILD_UNIT_TESTS )
   # Search for gtest headers and libraries
   find_package(GoogleTest)
 
@@ -57,3 +62,4 @@ if(GTEST_FOUND)
   else(GTEST_FOUND)
       message("Google testing framework was not found!")
   endif(GTEST_FOUND)
+endif()