include(ExternalProject)

# GoogleTest
ExternalProject_Add(googletest
        PREFIX googletest
        URL ${CMAKE_CURRENT_SOURCE_DIR}/googletest-release-1.8.0.tar.gz
        URL_MD5 16877098823401d1bf2ed7891d7dce36
        CMAKE_ARGS
                -DCMAKE_INSTALL_PREFIX=<INSTALL_DIR>
                -DCMAKE_BUILD_TYPE=${CMAKE_BUILD_TYPE}
)

ExternalProject_Get_Property(googletest INSTALL_DIR)
file(MAKE_DIRECTORY ${INSTALL_DIR}/include)

add_library(gtest STATIC IMPORTED GLOBAL)
add_dependencies(gtest googletest)
set_property(TARGET gtest PROPERTY IMPORTED_LOCATION ${INSTALL_DIR}/lib/libgtest.a)
set_property(TARGET gtest PROPERTY INTERFACE_INCLUDE_DIRECTORIES ${INSTALL_DIR}/include)
set_property(TARGET gtest PROPERTY INTERFACE_LINK_LIBRARIES pthread)

add_library(gmock STATIC IMPORTED GLOBAL)
add_dependencies(gmock googletest)
set_property(TARGET gmock PROPERTY IMPORTED_LOCATION ${INSTALL_DIR}/lib/libgmock.a)
set_property(TARGET gmock PROPERTY INTERFACE_INCLUDE_DIRECTORIES ${INSTALL_DIR}/include)