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option(protobuf_USE_EXTERNAL_GTEST "Use external Google Test (i.e. not the one in third_party/googletest)" OFF)
if (protobuf_USE_EXTERNAL_GTEST)
find_package(GTest REQUIRED CONFIG)
else()
if (NOT EXISTS "${protobuf_SOURCE_DIR}/third_party/googletest/CMakeLists.txt")
message(FATAL_ERROR
"Cannot find third_party/googletest directory that's needed to "
"build tests. If you use git, make sure you have cloned submodules:\n"
" git submodule update --init --recursive\n"
"If instead you want to skip tests, run cmake with:\n"
" cmake -Dprotobuf_BUILD_TESTS=OFF\n")
endif()
set(googlemock_source_dir "${protobuf_SOURCE_DIR}/third_party/googletest/googlemock")
set(googletest_source_dir "${protobuf_SOURCE_DIR}/third_party/googletest/googletest")
include_directories(
${googlemock_source_dir}
${googletest_source_dir}
${googletest_source_dir}/include
${googlemock_source_dir}/include
)
add_library(gmock ${protobuf_SHARED_OR_STATIC}
"${googlemock_source_dir}/src/gmock-all.cc"
"${googletest_source_dir}/src/gtest-all.cc"
)
if (protobuf_BUILD_SHARED_LIBS)
set_target_properties(gmock
PROPERTIES
COMPILE_DEFINITIONS
"GTEST_CREATE_SHARED_LIBRARY=1"
)
endif()
if (protobuf_INSTALL)
set(protobuf_INSTALL_TESTS ON)
endif()
target_link_libraries(gmock ${CMAKE_THREAD_LIBS_INIT})
add_library(gmock_main STATIC "${googlemock_source_dir}/src/gmock_main.cc")
target_link_libraries(gmock_main gmock)
add_library(GTest::gmock ALIAS gmock)
add_library(GTest::gmock_main ALIAS gmock_main)
add_library(GTest::gtest ALIAS gmock)
add_library(GTest::gtest_main ALIAS gmock_main)
endif()
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