130 lines
3.7 KiB
CMake
130 lines
3.7 KiB
CMake
# Copyright 2016-2018 by Martin Moene
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#
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# https://github.com/martinmoene/optional-lite
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#
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# Distributed under the Boost Software License, Version 1.0.
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# (See accompanying file LICENSE.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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cmake_minimum_required( VERSION 3.5 FATAL_ERROR )
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# optional-lite project and version, updated by script/update-version.py:
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project(
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optional_lite
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VERSION 3.4.0
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# DESCRIPTION "A C++17-like optional, a nullable object for C++98, C++11 and later in a single-file header-only library"
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# HOMEPAGE_URL "https://github.com/martinmoene/optional-lite"
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LANGUAGES CXX )
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# Package information:
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set( unit_name "optional" )
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set( package_nspace "nonstd" )
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set( package_name "${unit_name}-lite" )
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set( package_version "${${PROJECT_NAME}_VERSION}" )
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message( STATUS "Project '${PROJECT_NAME}', package '${package_name}' version: '${package_version}'")
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# Toplevel or subproject:
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if ( CMAKE_PROJECT_NAME STREQUAL PROJECT_NAME )
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set( optional_IS_TOPLEVEL_PROJECT TRUE )
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else()
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set( optional_IS_TOPLEVEL_PROJECT FALSE )
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endif()
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# If toplevel project, enable building and performing of tests, disable building of examples:
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option( OPTIONAL_LITE_OPT_BUILD_TESTS "Build and perform optional-lite tests" ${optional_IS_TOPLEVEL_PROJECT} )
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option( OPTIONAL_LITE_OPT_BUILD_EXAMPLES "Build optional-lite examples" OFF )
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option( OPTIONAL_LITE_OPT_SELECT_STD "Select std::optional" OFF )
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option( OPTIONAL_LITE_OPT_SELECT_NONSTD "Select nonstd::optional" OFF )
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# If requested, build and perform tests, build examples:
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if ( OPTIONAL_LITE_OPT_BUILD_TESTS )
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enable_testing()
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add_subdirectory( test )
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endif()
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if ( OPTIONAL_LITE_OPT_BUILD_EXAMPLES )
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add_subdirectory( example )
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endif()
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#
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# Interface, installation and packaging
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#
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# CMake helpers:
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include( GNUInstallDirs )
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include( CMakePackageConfigHelpers )
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# Interface library:
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add_library(
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${package_name} INTERFACE )
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add_library(
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${package_nspace}::${package_name} ALIAS ${package_name} )
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target_include_directories(
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${package_name}
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INTERFACE
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"$<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>"
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"$<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}>" )
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# Package configuration:
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# Note: package_name and package_target are used in package_config_in
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set( package_folder "${package_name}" )
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set( package_target "${package_name}-targets" )
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set( package_config "${package_name}-config.cmake" )
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set( package_config_in "${package_name}-config.cmake.in" )
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set( package_config_version "${package_name}-config-version.cmake" )
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configure_package_config_file(
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"${CMAKE_CURRENT_SOURCE_DIR}/cmake/${package_config_in}"
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"${CMAKE_CURRENT_BINARY_DIR}/${package_config}"
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INSTALL_DESTINATION "${CMAKE_INSTALL_LIBDIR}/cmake/${package_folder}"
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)
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configure_file(
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"${CMAKE_CURRENT_SOURCE_DIR}/cmake/${package_config_version}.in"
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"${CMAKE_CURRENT_BINARY_DIR}/${package_config_version}" @ONLY
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)
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# Installation:
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install(
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TARGETS ${package_name}
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EXPORT ${package_target}
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# INCLUDES DESTINATION "${...}" # already set via target_include_directories()
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)
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install(
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EXPORT ${package_target}
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NAMESPACE ${package_nspace}::
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DESTINATION "${CMAKE_INSTALL_LIBDIR}/cmake/${package_folder}"
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)
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install(
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FILES "${CMAKE_CURRENT_BINARY_DIR}/${package_config}"
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"${CMAKE_CURRENT_BINARY_DIR}/${package_config_version}"
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DESTINATION "${CMAKE_INSTALL_LIBDIR}/cmake/${package_folder}"
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)
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install(
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DIRECTORY "include/"
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DESTINATION "${CMAKE_INSTALL_INCLUDEDIR}"
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)
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export(
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EXPORT ${package_target}
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NAMESPACE ${package_nspace}::
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FILE "${CMAKE_CURRENT_BINARY_DIR}/${package_name}-targets.cmake"
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)
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# end of file
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