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# Build the gtest libraries
# Check if Google Test exists
SET(GTEST_SOURCE_DIR "${CMAKE_CURRENT_SOURCE_DIR}/gtest")
MESSAGE(STATUS ${GTEST_SOURCE_DIR})
IF(NOT EXISTS "${GTEST_SOURCE_DIR}/README")
MESSAGE(STATUS "GTest submodules unavailable. Updating submodules.")
EXECUTE_PROCESS(
COMMAND git submodule update --init --recursive
WORKING_DIRECTORY ${CMAKE_SOURCE_DIR}
OUTPUT_QUIET
)
ENDIF()
if(CMAKE_VERSION VERSION_LESS 3.2 AND CMAKE_GENERATOR MATCHES "Ninja")
message(WARNING "Building GTest with Ninja has known issues with CMake older than 3.2")
endif()
include(ExternalProject)
# Set the build type if it isn't already
if(NOT CMAKE_BUILD_TYPE)
set(CMAKE_BUILD_TYPE Release)
endif()
# Set default ExternalProject root directory
set(prefix "${CMAKE_BINARY_DIR}/third_party/gtest")
# the binary dir must be know before creating the external project in order
# to pass the byproducts
set(binary_dir "${prefix}/src/googletest-build")
set(stdlib_binary_dir "${prefix}/src/googletest-build-stdlib")
set(GTEST_LIBRARIES gtest gtest_main)
set(GTEST_LIBRARIES_STDLIB gtest_stdlib gtest_main_stdlib)
set(byproducts)
set(byproducts_libstdcpp)
foreach(lib ${GTEST_LIBRARIES})
set(${lib}_location
${binary_dir}/${CMAKE_CFG_INTDIR}/${CMAKE_STATIC_LIBRARY_PREFIX}${lib}${CMAKE_STATIC_LIBRARY_SUFFIX})
set(${lib}_location_libstdcpp
${stdlib_binary_dir}/${CMAKE_CFG_INTDIR}/${CMAKE_STATIC_LIBRARY_PREFIX}${lib}${CMAKE_STATIC_LIBRARY_SUFFIX})
list(APPEND byproducts ${${lib}_location})
list(APPEND byproducts_libstdcpp ${${lib}_location_libstdcpp})
endforeach()
SET(CMAKE_CXX_FLAGS_STD "${CMAKE_CXX_FLAGS} -stdlib=libstdc++")
FUNCTION(GTEST_BUILD BUILD_NAME BUILD_TYPE BUILD_BINARY_DIR BUILD_BYPRODUCTS)
# Add gtest
ExternalProject_Add(
${BUILD_NAME}
# URL http://googletest.googlecode.com/files/gtest-1.7.0.zip
# URL_MD5 2d6ec8ccdf5c46b05ba54a9fd1d130d7
SOURCE_DIR "/usr/src/gtest"
PREFIX ${prefix}
BINARY_DIR ${BUILD_BINARY_DIR}
TIMEOUT 10
CMAKE_ARGS -Dgtest_force_shared_crt=ON
-DCMAKE_CXX_COMPILER=${CMAKE_CXX_COMPILER}
-DCMAKE_BUILD_TYPE=${BUILD_TYPE}
-DCMAKE_CXX_FLAGS=${CMAKE_CXX_FLAGS}
-DCMAKE_CXX_FLAGS_LIBSTDCPP=${CMAKE_CXX_FLAGS_STD}
-DCMAKE_CXX_FLAGS_DEBUG=${CMAKE_CXX_FLAGS_DEBUG}
-DCMAKE_CXX_FLAGS_MINSIZEREL=${CMAKE_CXX_FLAGS_MINSIZEREL}
-DCMAKE_CXX_FLAGS_RELEASE=${CMAKE_CXX_FLAGS_RELEASE}
-DCMAKE_CXX_FLAGS_RELWITHDEBINFO=${CMAKE_CXX_FLAGS_RELWITHDEBINFO}
BUILD_BYPRODUCTS ${BUILD_BYPRODUCTS}
# Disable install step
INSTALL_COMMAND ""
# Wrap download, configure and build steps in a script to log output
LOG_DOWNLOAD 0
LOG_UPDATE 0
LOG_CONFIGURE 0
LOG_BUILD 0)
ENDFUNCTION(GTEST_BUILD)
GTEST_BUILD(googletest ${CMAKE_BUILD_TYPE} ${binary_dir} "${byproducts}")
# If we are on OSX and using the clang compiler go ahead and build
# GTest using libstdc++ just in case we compile the CUDA backend
IF("${APPLE}" AND ${CMAKE_CXX_COMPILER_ID} STREQUAL "Clang")
GTEST_BUILD(googletest_libstdcpp LibStdCpp ${stdlib_binary_dir} "${byproducts_libstdcpp}")
ENDIF("${APPLE}" AND ${CMAKE_CXX_COMPILER_ID} STREQUAL "Clang")
foreach(lib ${GTEST_LIBRARIES})
add_library(${lib} IMPORTED STATIC)
add_dependencies(${lib} googletest)
set_target_properties(${lib} PROPERTIES IMPORTED_LOCATION ${${lib}_location})
IF("${APPLE}" AND ${CMAKE_CXX_COMPILER_ID} STREQUAL "Clang")
add_library(${lib}_stdlib IMPORTED STATIC)
add_dependencies(${lib}_stdlib googletest_libstdcpp)
set_target_properties(${lib}_stdlib PROPERTIES IMPORTED_LOCATION ${${lib}_location_libstdcpp})
ENDIF("${APPLE}" AND ${CMAKE_CXX_COMPILER_ID} STREQUAL "Clang")
endforeach()
# Specify include dir
ExternalProject_Get_Property(googletest source_dir)
set(GTEST_INCLUDE_DIRS ${source_dir}/include)
set(GTEST_FOUND ON)
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