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cmake: add FP16_USE_SYSTEM_* options; support find_package(FP16) #23

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cmake: add FP16_USE_SYSTEM_* options; support find_package(FP16) #23

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62 changes: 44 additions & 18 deletions CMakeLists.txt
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Original file line number Diff line number Diff line change
Expand Up @@ -9,6 +9,10 @@ OPTION(FP16_BUILD_BENCHMARKS "Build FP16 micro-benchmarks" ON)
OPTION(FP16_BUILD_COMPARATIVE_BENCHMARKS "Build FP16 micro-benchmarks comparing to alternatives" OFF)
OPTION(FP16_INSTALL_LIBRARY "Install the FP16 library headers" ON)

OPTION(FP16_USE_SYSTEM_LIBS "Use system libraries instead of downloading and building them" OFF)
OPTION(FP16_USE_SYSTEM_GOOGLEBENCHMARK "Use system Google Benchmark instead of downloading and building it" ${FP16_USE_SYSTEM_LIBS})
OPTION(FP16_USE_SYSTEM_GOOGLETEST "Use system Google Test instead of downloading and building it" ${FP16_USE_SYSTEM_LIBS})

# ---[ CMake options
IF(FP16_BUILD_TESTS OR FP16_BUILD_BENCHMARKS)
ENABLE_LANGUAGE(CXX)
Expand All @@ -19,24 +23,32 @@ IF(FP16_BUILD_TESTS)
ENDIF()

# ---[ Download deps
IF(FP16_BUILD_TESTS AND NOT DEFINED GOOGLETEST_SOURCE_DIR)
MESSAGE(STATUS "Downloading Google Test to ${CMAKE_BINARY_DIR}/googletest-source (define GOOGLETEST_SOURCE_DIR to avoid it)")
CONFIGURE_FILE(cmake/DownloadGoogleTest.cmake "${CMAKE_BINARY_DIR}/googletest-download/CMakeLists.txt")
EXECUTE_PROCESS(COMMAND "${CMAKE_COMMAND}" -G "${CMAKE_GENERATOR}" .
WORKING_DIRECTORY "${CMAKE_BINARY_DIR}/googletest-download")
EXECUTE_PROCESS(COMMAND "${CMAKE_COMMAND}" --build .
WORKING_DIRECTORY "${CMAKE_BINARY_DIR}/googletest-download")
SET(GOOGLETEST_SOURCE_DIR "${CMAKE_BINARY_DIR}/googletest-source" CACHE STRING "Google Test source directory")
IF(FP16_BUILD_TESTS)
IF(FP16_USE_SYSTEM_GOOGLETEST)
FIND_PACKAGE(GTest REQUIRED)
ELSEIF(NOT DEFINED GOOGLETEST_SOURCE_DIR)
MESSAGE(STATUS "Downloading Google Test to ${CMAKE_BINARY_DIR}/googletest-source (define GOOGLETEST_SOURCE_DIR to avoid it)")
CONFIGURE_FILE(cmake/DownloadGoogleTest.cmake "${CMAKE_BINARY_DIR}/googletest-download/CMakeLists.txt")
EXECUTE_PROCESS(COMMAND "${CMAKE_COMMAND}" -G "${CMAKE_GENERATOR}" .
WORKING_DIRECTORY "${CMAKE_BINARY_DIR}/googletest-download")
EXECUTE_PROCESS(COMMAND "${CMAKE_COMMAND}" --build .
WORKING_DIRECTORY "${CMAKE_BINARY_DIR}/googletest-download")
SET(GOOGLETEST_SOURCE_DIR "${CMAKE_BINARY_DIR}/googletest-source" CACHE STRING "Google Test source directory")
ENDIF()
ENDIF()

IF(FP16_BUILD_BENCHMARKS AND NOT DEFINED GOOGLEBENCHMARK_SOURCE_DIR)
MESSAGE(STATUS "Downloading Google Benchmark to ${CMAKE_BINARY_DIR}/googlebenchmark-source (define GOOGLEBENCHMARK_SOURCE_DIR to avoid it)")
CONFIGURE_FILE(cmake/DownloadGoogleBenchmark.cmake "${CMAKE_BINARY_DIR}/googlebenchmark-download/CMakeLists.txt")
EXECUTE_PROCESS(COMMAND "${CMAKE_COMMAND}" -G "${CMAKE_GENERATOR}" .
WORKING_DIRECTORY "${CMAKE_BINARY_DIR}/googlebenchmark-download")
EXECUTE_PROCESS(COMMAND "${CMAKE_COMMAND}" --build .
WORKING_DIRECTORY "${CMAKE_BINARY_DIR}/googlebenchmark-download")
SET(GOOGLEBENCHMARK_SOURCE_DIR "${CMAKE_BINARY_DIR}/googlebenchmark-source" CACHE STRING "Google Benchmark source directory")
IF(FP16_BUILD_BENCHMARKS)
IF(FP16_USE_SYSTEM_GOOGLEBENCHMARK)
FIND_PACKAGE(benchmark REQUIRED)
ELSEIF(NOT DEFINED GOOGLEBENCHMARK_SOURCE_DIR)
MESSAGE(STATUS "Downloading Google Benchmark to ${CMAKE_BINARY_DIR}/googlebenchmark-source (define GOOGLEBENCHMARK_SOURCE_DIR to avoid it)")
CONFIGURE_FILE(cmake/DownloadGoogleBenchmark.cmake "${CMAKE_BINARY_DIR}/googlebenchmark-download/CMakeLists.txt")
EXECUTE_PROCESS(COMMAND "${CMAKE_COMMAND}" -G "${CMAKE_GENERATOR}" .
WORKING_DIRECTORY "${CMAKE_BINARY_DIR}/googlebenchmark-download")
EXECUTE_PROCESS(COMMAND "${CMAKE_COMMAND}" --build .
WORKING_DIRECTORY "${CMAKE_BINARY_DIR}/googlebenchmark-download")
SET(GOOGLEBENCHMARK_SOURCE_DIR "${CMAKE_BINARY_DIR}/googlebenchmark-source" CACHE STRING "Google Benchmark source directory")
ENDIF()
ENDIF()

# ---[ FP16 library
Expand All @@ -56,9 +68,23 @@ IF(FP16_INSTALL_LIBRARY)
DESTINATION "${CMAKE_INSTALL_INCLUDEDIR}/fp16")
ENDIF()

INCLUDE(CMakePackageConfigHelpers)
CONFIGURE_PACKAGE_CONFIG_FILE(
${CMAKE_CURRENT_SOURCE_DIR}/cmake/${CMAKE_PROJECT_NAME}Config.cmake.in
${CMAKE_CURRENT_BINARY_DIR}/${CMAKE_PROJECT_NAME}Config.cmake
INSTALL_DESTINATION ${CMAKE_INSTALL_LIBDIR}/cmake/${CMAKE_PROJECT_NAME}
)

INSTALL(TARGETS fp16 EXPORT ${CMAKE_PROJECT_NAME}Targets)
INSTALL(EXPORT ${CMAKE_PROJECT_NAME}Targets
FILE ${CMAKE_PROJECT_NAME}Config.cmake
DESTINATION ${CMAKE_INSTALL_LIBDIR}/cmake/${CMAKE_PROJECT_NAME}
)
INSTALL(DIRECTORY include/ DESTINATION include)

IF(FP16_BUILD_TESTS)
# ---[ Build google test
IF(NOT TARGET gtest)
IF(NOT TARGET gtest AND NOT FP16_USE_SYSTEM_GOOGLETEST)
SET(gtest_force_shared_crt ON CACHE BOOL "" FORCE)
ADD_SUBDIRECTORY(
"${GOOGLETEST_SOURCE_DIR}"
Expand Down Expand Up @@ -131,7 +157,7 @@ ENDIF()

IF(FP16_BUILD_BENCHMARKS)
# ---[ Build google benchmark
IF(NOT TARGET benchmark)
IF(NOT TARGET benchmark AND NOT FP16_USE_SYSTEM_GOOGLEBENCHMARK)
SET(BENCHMARK_ENABLE_TESTING OFF CACHE BOOL "")
ADD_SUBDIRECTORY(
"${GOOGLEBENCHMARK_SOURCE_DIR}"
Expand Down
5 changes: 5 additions & 0 deletions cmake/FP16Config.cmake.in
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Original file line number Diff line number Diff line change
@@ -0,0 +1,5 @@
@PACKAGE_INIT@

include("${CMAKE_CURRENT_LIST_DIR}/FP16Targets.cmake")

check_required_components(FP16)