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#==============================================================================
# Build Google Benchmark
#==============================================================================
include(ExternalProject)
set(BENCHMARK_COMPILE_FLAGS
-Wno-unused-command-line-argument
-nostdinc++
-isystem "${LIBCXX_GENERATED_INCLUDE_DIR}"
-L${LIBCXX_LIBRARY_DIR}
-Wl,-rpath,${LIBCXX_LIBRARY_DIR}
${SANITIZER_FLAGS}
)
if(LLVM_ENABLE_PER_TARGET_RUNTIME_DIR AND NOT APPLE)
list(APPEND BENCHMARK_COMPILE_FLAGS
-isystem "${LIBCXX_GENERATED_INCLUDE_TARGET_DIR}")
endif()
if (DEFINED LIBCXX_CXX_ABI_LIBRARY_PATH)
list(APPEND BENCHMARK_COMPILE_FLAGS
-L${LIBCXX_CXX_ABI_LIBRARY_PATH}
-Wl,-rpath,${LIBCXX_CXX_ABI_LIBRARY_PATH})
endif()
split_list(BENCHMARK_COMPILE_FLAGS)
set(BENCHMARK_CXX_LIBRARIES)
list(APPEND BENCHMARK_CXX_LIBRARIES c++)
if (NOT LIBCXX_ENABLE_SHARED)
list(APPEND BENCHMARK_CXX_LIBRARIES c++abi)
endif()
ExternalProject_Add(google-benchmark
EXCLUDE_FROM_ALL ON
DEPENDS cxx cxx-headers
PREFIX google-benchmark
SOURCE_DIR ${LLVM_THIRD_PARTY_DIR}/benchmark
INSTALL_DIR ${CMAKE_CURRENT_BINARY_DIR}/google-benchmark
CMAKE_CACHE_ARGS
-DCMAKE_C_COMPILER:FILEPATH=${CMAKE_C_COMPILER}
-DCMAKE_CXX_COMPILER:FILEPATH=${CMAKE_CXX_COMPILER}
-DCMAKE_MAKE_PROGRAM:FILEPATH=${CMAKE_MAKE_PROGRAM}
-DCMAKE_BUILD_TYPE:STRING=RELEASE
-DCMAKE_INSTALL_PREFIX:PATH=<INSTALL_DIR>
-DCMAKE_CXX_FLAGS:STRING=${BENCHMARK_COMPILE_FLAGS}
-DBENCHMARK_USE_LIBCXX:BOOL=ON
-DBENCHMARK_ENABLE_TESTING:BOOL=OFF
-DBENCHMARK_CXX_LIBRARIES:STRING=${BENCHMARK_CXX_LIBRARIES})
add_dependencies(cxx-test-depends google-benchmark)
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