set(OLD_CMAKE_REQUIRED_LIBRARIES ${CMAKE_REQUIRED_LIBRARIES})
set(CMAKE_REQUIRED_FLAGS "-DGTEST_USE_OWN_TR1_TUPLE ${CMAKE_EXE_LINKER_FLAGS}")
set(CMAKE_REQUIRED_INCLUDES ${GTEST_INCLUDE_DIRS} )
-set(CMAKE_REQUIRED_LIBRARIES ${GTEST_LIBRARIES} ${EXTERNAL_SYSTEM_LIBS} )
+set(CMAKE_REQUIRED_LIBRARIES ${GTEST_LIBRARIES} ${CMAKE_THREAD_LIBS_INIT} ${EXTERNAL_SYSTEM_LIBS} )
CHECK_CXX_SOURCE_COMPILES("
#include <gtest/gtest.h>
class fixture: public ::testing::Test, public ::testing::WithParamInterface< int >