llvm-project/pstl/CMakeLists.txt
Mark de Wever 92523a35a8 Revert "[CMake] Bumps minimum version to 3.20.0."
Some build bots have not been updated to the new minimal CMake version.
Reverting for now and ping the buildbot owners.

This reverts commit 44c6b905f8.
2023-03-04 18:28:13 +01:00

103 lines
4.8 KiB
CMake

#===-- CMakeLists.txt ----------------------------------------------------===##
#
# Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
# See https://llvm.org/LICENSE.txt for license information.
# SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
#
#===----------------------------------------------------------------------===##
cmake_minimum_required(VERSION 3.13.4)
set(PARALLELSTL_VERSION_FILE "${CMAKE_CURRENT_SOURCE_DIR}/include/pstl/internal/pstl_config.h")
file(STRINGS "${PARALLELSTL_VERSION_FILE}" PARALLELSTL_VERSION_SOURCE REGEX "#define _PSTL_VERSION .*$")
string(REGEX REPLACE "#define _PSTL_VERSION (.*)$" "\\1" PARALLELSTL_VERSION_SOURCE "${PARALLELSTL_VERSION_SOURCE}")
math(EXPR VERSION_MAJOR "(${PARALLELSTL_VERSION_SOURCE} / 1000)")
math(EXPR VERSION_MINOR "((${PARALLELSTL_VERSION_SOURCE} % 1000) / 10)")
math(EXPR VERSION_PATCH "(${PARALLELSTL_VERSION_SOURCE} % 10)")
project(ParallelSTL VERSION ${VERSION_MAJOR}.${VERSION_MINOR}.${VERSION_PATCH} LANGUAGES CXX)
# Must go below project(..)
include(GNUInstallDirs)
set(PSTL_PARALLEL_BACKEND "serial" CACHE STRING "Threading backend to use. Valid choices are 'serial', 'omp', and 'tbb'. The default is 'serial'.")
set(PSTL_HIDE_FROM_ABI_PER_TU OFF CACHE BOOL "Whether to constrain ABI-unstable symbols to each translation unit (basically, mark them with C's static keyword).")
set(_PSTL_HIDE_FROM_ABI_PER_TU ${PSTL_HIDE_FROM_ABI_PER_TU}) # For __pstl_config_site
if (NOT TBB_DIR)
get_filename_component(PSTL_DIR_NAME ${CMAKE_CURRENT_SOURCE_DIR} NAME)
string(REPLACE pstl tbb TBB_DIR_NAME ${PSTL_DIR_NAME})
if (EXISTS "${CMAKE_CURRENT_SOURCE_DIR}/../${TBB_DIR_NAME}/cmake")
get_filename_component(TBB_DIR "${CMAKE_CURRENT_SOURCE_DIR}/../${TBB_DIR_NAME}/cmake" ABSOLUTE)
endif()
endif()
###############################################################################
# Setup the ParallelSTL library target
###############################################################################
add_library(ParallelSTL INTERFACE)
add_library(pstl::ParallelSTL ALIAS ParallelSTL)
target_compile_features(ParallelSTL INTERFACE cxx_std_17)
if (PSTL_PARALLEL_BACKEND STREQUAL "serial")
message(STATUS "Parallel STL uses the serial backend")
set(_PSTL_PAR_BACKEND_SERIAL ON)
elseif (PSTL_PARALLEL_BACKEND STREQUAL "tbb")
find_package(TBB 2018 REQUIRED tbb OPTIONAL_COMPONENTS tbbmalloc)
message(STATUS "Parallel STL uses TBB ${TBB_VERSION} (interface version: ${TBB_INTERFACE_VERSION})")
target_link_libraries(ParallelSTL INTERFACE TBB::tbb)
set(_PSTL_PAR_BACKEND_TBB ON)
elseif (PSTL_PARALLEL_BACKEND STREQUAL "omp")
message(STATUS "Parallel STL uses the omp backend")
target_compile_options(ParallelSTL INTERFACE "-fopenmp=libomp")
set(_PSTL_PAR_BACKEND_OPENMP ON)
else()
message(FATAL_ERROR "Requested unknown Parallel STL backend '${PSTL_PARALLEL_BACKEND}'.")
endif()
set(PSTL_GENERATED_HEADERS_DIR "${CMAKE_CURRENT_BINARY_DIR}/generated_headers")
set(PSTL_CONFIG_SITE_PATH "${PSTL_GENERATED_HEADERS_DIR}/__pstl_config_site")
configure_file("include/__pstl_config_site.in"
"${PSTL_CONFIG_SITE_PATH}"
@ONLY)
target_include_directories(ParallelSTL
INTERFACE
$<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>
$<BUILD_INTERFACE:${PSTL_GENERATED_HEADERS_DIR}>
$<INSTALL_INTERFACE:include>)
###############################################################################
# Setup tests
###############################################################################
enable_testing()
add_subdirectory(test)
###############################################################################
# Install the target and the associated CMake files
###############################################################################
include(CMakePackageConfigHelpers)
write_basic_package_version_file("${CMAKE_CURRENT_BINARY_DIR}/ParallelSTLConfigVersion.cmake"
COMPATIBILITY ExactVersion)
configure_file(cmake/ParallelSTLConfig.cmake.in
"${CMAKE_CURRENT_BINARY_DIR}/ParallelSTLConfig.cmake"
@ONLY)
install(TARGETS ParallelSTL
EXPORT ParallelSTLTargets)
install(EXPORT ParallelSTLTargets
FILE ParallelSTLTargets.cmake
NAMESPACE pstl::
DESTINATION lib/cmake/ParallelSTL)
install(FILES "${CMAKE_CURRENT_BINARY_DIR}/ParallelSTLConfig.cmake"
"${CMAKE_CURRENT_BINARY_DIR}/ParallelSTLConfigVersion.cmake"
DESTINATION lib/cmake/ParallelSTL)
install(DIRECTORY include/
DESTINATION "${CMAKE_INSTALL_INCLUDEDIR}"
PATTERN "*.in" EXCLUDE)
install(FILES "${PSTL_CONFIG_SITE_PATH}"
DESTINATION "${CMAKE_INSTALL_INCLUDEDIR}")
add_custom_target(install-pstl
COMMAND "${CMAKE_COMMAND}" -P "${PROJECT_BINARY_DIR}/cmake_install.cmake" -DCOMPONENT=ParallelSTL)