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CMakeLists.txt
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# Minimum version follows the current Ubuntu LTS and RHEL version
cmake_minimum_required(VERSION 3.20)
if (POLICY CMP0140)
# Enable using return(PROPAGATE)
# TODO: Remove when cmake 3.25 is commonly distributed
cmake_policy(SET CMP0140 NEW)
endif ()
#[==============================================================================================[
# Basic project definition #
]==============================================================================================]
list(APPEND CMAKE_MESSAGE_CONTEXT CMakeExtraUtils)
# dogfooding `DynamicVersion` module in order to set the CMakeExtraUtils version
list(PREPEND CMAKE_MODULE_PATH ${CMAKE_CURRENT_LIST_DIR}/cmake)
include(DynamicVersion)
dynamic_version(PROJECT_PREFIX CMakeExtraUtils_
FALLBACK_VERSION 0.0.0
)
project(CMakeExtraUtils
VERSION ${PROJECT_VERSION}
DESCRIPTION "Extra utilities for cmake"
HOMEPAGE_URL https://github.com/LecrisUT/CmakeExtraUtils
LANGUAGES NONE
)
# Back-porting to PROJECT_IS_TOP_LEVEL to older cmake
# TODO: Remove when requiring cmake >= 3.21
if (NOT DEFINED CMakeExtraUtils_IS_TOP_LEVEL)
if (CMAKE_PROJECT_NAME STREQUAL PROJECT_NAME)
set(PROJECT_IS_TOP_LEVEL ON)
set(CMakeExtraUtils_IS_TOP_LEVEL ON)
else ()
set(PROJECT_IS_TOP_LEVEL OFF)
set(CMakeExtraUtils_IS_TOP_LEVEL_IS_TOP_LEVEL OFF)
endif ()
endif ()
#[==============================================================================================[
# Options #
]==============================================================================================]
option(CMAKEEXTRAUTILS_TESTS "CMakeExtraUtils: Include tests" ${PROJECT_IS_TOP_LEVEL})
option(CMAKEEXTRAUTILS_INSTALL "CMakeExtraUtils: Install project files" ${PROJECT_IS_TOP_LEVEL})
#[==============================================================================================[
# Project configuration #
]==============================================================================================]
if (CMAKEEXTRAUTILS_INSTALL)
include(CMakePackageConfigHelpers)
if (UNIX)
include(GNUInstallDirs)
endif ()
endif ()
#[==============================================================================================[
# External packages #
]==============================================================================================]
# No external dependencies
#[==============================================================================================[
# Main definition #
]==============================================================================================]
# Copy the module files to build directory
# This is needed to make the scripts importable by ${builddir}/CMakeExtraUtilsConfig.cmake
foreach (module IN ITEMS
DynamicVersion
PackageComps
)
configure_file(
${PROJECT_SOURCE_DIR}/cmake/${module}.cmake
${CMAKE_CURRENT_BINARY_DIR}/${module}.cmake
COPYONLY
)
endforeach ()
if (CMAKEEXTRAUTILS_TESTS)
enable_testing()
add_subdirectory(test)
endif ()
#[==============================================================================================[
# Install or Export #
]==============================================================================================]
# Install package files
if (CMAKEEXTRAUTILS_INSTALL)
# Will show developer warning, but can't supress it :(
# Package files
write_basic_package_version_file(
CMakeExtraUtilsConfigVersion.cmake
VERSION ${PROJECT_VERSION}
# TODO: Currently unstable api, change when v1.0 is released
COMPATIBILITY SameMinorVersion
ARCH_INDEPENDENT
)
configure_package_config_file(
cmake/CMakeExtraUtilsConfig.cmake.in
CMakeExtraUtilsConfig.cmake
INSTALL_DESTINATION ${CMAKE_INSTALL_DATAROOTDIR}/cmake/CMakeExtraUtils
)
install(FILES
${CMAKE_CURRENT_BINARY_DIR}/CMakeExtraUtilsConfigVersion.cmake
${CMAKE_CURRENT_BINARY_DIR}/CMakeExtraUtilsConfig.cmake
DESTINATION ${CMAKE_INSTALL_DATAROOTDIR}/cmake/CMakeExtraUtils
)
# Bundled cmake files
install(FILES
cmake/DynamicVersion.cmake
cmake/PackageComps.cmake
DESTINATION ${CMAKE_INSTALL_DATAROOTDIR}/cmake/CMakeExtraUtils
)
endif ()
# Make project available for FetchContent
if (NOT PROJECT_IS_TOP_LEVEL)
# Propagate variables for FetchContent
# All variables have to be consistent with CMakeExtraUtilsConfig.cmake
if (CMAKE_VERSION VERSION_LESS 3.25)
# TODO: Remove when cmake 3.25 is commonly distributed
set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} PARENT_SCOPE)
set(CMakeExtraUtils_VERSION ${CMakeExtraUtils_VERSION} PARENT_SCOPE)
set(CMakeExtraUtils_VERSION_MAJOR ${CMakeExtraUtils_VERSION_MAJOR} PARENT_SCOPE)
set(CMakeExtraUtils_VERSION_MINOR ${CMakeExtraUtils_VERSION_MINOR} PARENT_SCOPE)
set(CMakeExtraUtils_VERSION_PATCH ${CMakeExtraUtils_VERSION_PATCH} PARENT_SCOPE)
set(CMakeExtraUtils_VERSION_TWEAK ${CMakeExtraUtils_VERSION_TWEAK} PARENT_SCOPE)
endif ()
return(PROPAGATE
CMAKE_MODULE_PATH
CMakeExtraUtils_VERSION
CMakeExtraUtils_VERSION_MAJOR
CMakeExtraUtils_VERSION_MINOR
CMakeExtraUtils_VERSION_PATCH
CMakeExtraUtils_VERSION_TWEAK
)
endif ()