add CMake support to build gtest

CMakeLists.txt

@@ -270,10 +270,10 @@ ENDIF(INSTALL_LIBS)
 #	OPTION(INSTALL_EXTRA_LIBS "Set when you want extra libraries installed" OFF)
 #ENDIF (${CMAKE_MAJOR_VERSION}.${CMAKE_MINOR_VERSION} GREATER 2.5)
 
-OPTION(BUILD_UNIT_TESTS "Build Unit Tests"	OFF)
+OPTION(BUILD_UNIT_TESTS "Build Unit Tests"	ON)
 
 IF (BUILD_UNIT_TESTS)
-	SUBDIRS(UnitTests)
+	SUBDIRS(test)
 ENDIF()
 
 set (BULLET_CONFIG_CMAKE_PATH lib${LIB_SUFFIX}/cmake/bullet )

test/CMakeLists.txt

@@ -0,0 +1,3 @@
+#SUBDIRS(  gtest-1.7.0  TestBullet3OpenCL)
+SUBDIRS(  gtest-1.7.0  )
+

test/gtest-1.7.0/CMakeLists.txt

@@ -0,0 +1,16 @@
+
+INCLUDE_DIRECTORIES(
+	.
+	include
+)
+
+SET(gtest-1.7.0_SRCS
+	src/gtest-all.cc
+)
+
+#ADD_DEFINITIONS(-DGTEST_HAS_PTHREAD=1)
+ADD_DEFINITIONS(-D_VARIADIC_MAX=10)
+
+FILE(GLOB_RECURSE gtest-1.7.0_HDRS "*.h")
+
+ADD_LIBRARY(gtest ${gtest-1.7.0_SRCS} ${gtest-1.7.0_HDRS})