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CMAKE_MINIMUM_REQUIRED(VERSION 3.5 FATAL_ERROR)
# ---[ Project
PROJECT(FXdiv C CXX)
# ---[ Options.
OPTION(FXDIV_USE_INLINE_ASSEMBLY "Allow use of inline assembly in FXdiv" OFF)
IF("${CMAKE_SOURCE_DIR}" STREQUAL "${PROJECT_SOURCE_DIR}")
OPTION(FXDIV_BUILD_TESTS "Build FXdiv unit tests" ON)
OPTION(FXDIV_BUILD_BENCHMARKS "Build FXdiv micro-benchmarks" ON)
ELSE()
SET(FXDIV_BUILD_TESTS OFF CACHE BOOL "Build FXdiv unit tests")
SET(FXDIV_BUILD_BENCHMARKS OFF CACHE BOOL "Build FXdiv micro-benchmarks")
ENDIF()
# ---[ CMake options
INCLUDE(GNUInstallDirs)
IF(FXDIV_BUILD_TESTS)
ENABLE_TESTING()
ENDIF()
# ---[ Download deps
IF(FXDIV_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")
ENDIF()
IF(FXDIV_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")
ENDIF()
# ---[ FXdiv library
ADD_LIBRARY(fxdiv INTERFACE)
TARGET_INCLUDE_DIRECTORIES(fxdiv INTERFACE include)
IF(FXDIV_USE_INLINE_ASSEMBLY)
TARGET_COMPILE_DEFINITIONS(fxdiv INTERFACE FXDIV_USE_INLINE_ASSEMBLY=1)
ELSE()
TARGET_COMPILE_DEFINITIONS(fxdiv INTERFACE FXDIV_USE_INLINE_ASSEMBLY=0)
ENDIF()
INSTALL(FILES include/fxdiv.h DESTINATION ${CMAKE_INSTALL_INCLUDEDIR})
IF(FXDIV_BUILD_TESTS)
# ---[ Build google test
IF(NOT TARGET gtest)
SET(gtest_force_shared_crt ON CACHE BOOL "" FORCE)
ADD_SUBDIRECTORY(
"${GOOGLETEST_SOURCE_DIR}"
"${CMAKE_BINARY_DIR}/googletest")
ENDIF()
ADD_EXECUTABLE(multiply-high-test test/multiply-high.cc)
SET_TARGET_PROPERTIES(multiply-high-test PROPERTIES
CXX_STANDARD 11
CXX_EXTENSIONS YES)
TARGET_LINK_LIBRARIES(multiply-high-test fxdiv gtest gtest_main)
ADD_TEST(multiply-high multiply-high-test)
ADD_EXECUTABLE(quotient-test test/quotient.cc)
SET_TARGET_PROPERTIES(quotient-test PROPERTIES
CXX_STANDARD 11
CXX_EXTENSIONS YES)
TARGET_LINK_LIBRARIES(quotient-test fxdiv gtest gtest_main)
ADD_TEST(quotient quotient-test)
ENDIF()
IF(FXDIV_BUILD_BENCHMARKS)
# ---[ Build google benchmark
IF(NOT TARGET benchmark)
SET(BENCHMARK_ENABLE_TESTING OFF CACHE BOOL "" FORCE)
ADD_SUBDIRECTORY(
"${GOOGLEBENCHMARK_SOURCE_DIR}"
"${CMAKE_BINARY_DIR}/googlebenchmark")
ENDIF()
ADD_EXECUTABLE(init-bench bench/init.cc)
SET_TARGET_PROPERTIES(init-bench PROPERTIES
CXX_STANDARD 11
CXX_EXTENSIONS YES)
TARGET_LINK_LIBRARIES(init-bench fxdiv benchmark)
ADD_EXECUTABLE(multiply-bench bench/multiply.cc)
SET_TARGET_PROPERTIES(multiply-bench PROPERTIES
CXX_STANDARD 11
CXX_EXTENSIONS YES)
TARGET_LINK_LIBRARIES(multiply-bench fxdiv benchmark)
ADD_EXECUTABLE(divide-bench bench/divide.cc)
SET_TARGET_PROPERTIES(divide-bench PROPERTIES
CXX_STANDARD 11
CXX_EXTENSIONS YES)
TARGET_LINK_LIBRARIES(divide-bench fxdiv benchmark)
ADD_EXECUTABLE(quotient-bench bench/quotient.cc)
SET_TARGET_PROPERTIES(quotient-bench PROPERTIES
CXX_STANDARD 11
CXX_EXTENSIONS YES)
TARGET_LINK_LIBRARIES(quotient-bench fxdiv benchmark)
ADD_EXECUTABLE(round-down-bench bench/round-down.cc)
SET_TARGET_PROPERTIES(round-down-bench PROPERTIES
CXX_STANDARD 11
CXX_EXTENSIONS YES)
TARGET_LINK_LIBRARIES(round-down-bench fxdiv benchmark)
ENDIF()
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