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Add CMake option CXXOPTS_ENABLE_INSTALL (#195)

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Install targets will not be generated if this option is set to OFF,
which is useful when including it as a bundled dependency of
another project.
This commit is contained in:
Anders 2019-08-01 09:51:01 +02:00 committed by jarro2783
parent 531c00b96f
commit 6e31c227e2
1 changed files with 29 additions and 26 deletions
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33
CMakeLists.txt
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@ -36,6 +36,7 @@ enable_testing()
option(CXXOPTS_BUILD_EXAMPLES "Set to ON to build examples" ON) option(CXXOPTS_BUILD_EXAMPLES "Set to ON to build examples" ON)
option(CXXOPTS_BUILD_TESTS "Set to ON to build tests" ON) option(CXXOPTS_BUILD_TESTS "Set to ON to build tests" ON)
option(CXXOPTS_ENABLE_INSTALL "Generate the install target" ON)
# request c++11 without gnu extension for the whole project and enable more warnings # request c++11 without gnu extension for the whole project and enable more warnings
if (CXXOPTS_CXX_STANDARD) if (CXXOPTS_CXX_STANDARD)
@ -71,35 +72,37 @@ target_include_directories(cxxopts INTERFACE
$<INSTALL_INTERFACE:include> $<INSTALL_INTERFACE:include>
) )
include(CMakePackageConfigHelpers) if(CXXOPTS_ENABLE_INSTALL)
set(CXXOPTS_CMAKE_DIR "lib/cmake/cxxopts" CACHE STRING include(CMakePackageConfigHelpers)
set(CXXOPTS_CMAKE_DIR "lib/cmake/cxxopts" CACHE STRING
"Installation directory for cmake files, relative to ${CMAKE_INSTALL_PREFIX}.") "Installation directory for cmake files, relative to ${CMAKE_INSTALL_PREFIX}.")
set(version_config "${PROJECT_BINARY_DIR}/cxxopts-config-version.cmake") set(version_config "${PROJECT_BINARY_DIR}/cxxopts-config-version.cmake")
set(project_config "${PROJECT_BINARY_DIR}/cxxopts-config.cmake") set(project_config "${PROJECT_BINARY_DIR}/cxxopts-config.cmake")
set(targets_export_name cxxopts-targets) set(targets_export_name cxxopts-targets)
# Generate the version, config and target files into the build directory. # Generate the version, config and target files into the build directory.
write_basic_package_version_file( write_basic_package_version_file(
${version_config} ${version_config}
VERSION ${VERSION} VERSION ${VERSION}
COMPATIBILITY AnyNewerVersion) COMPATIBILITY AnyNewerVersion)
configure_package_config_file( configure_package_config_file(
${PROJECT_SOURCE_DIR}/cxxopts-config.cmake.in ${PROJECT_SOURCE_DIR}/cxxopts-config.cmake.in
${project_config} ${project_config}
INSTALL_DESTINATION ${CXXOPTS_CMAKE_DIR}) INSTALL_DESTINATION ${CXXOPTS_CMAKE_DIR})
export(TARGETS cxxopts NAMESPACE cxxopts:: export(TARGETS cxxopts NAMESPACE cxxopts::
FILE ${PROJECT_BINARY_DIR}/${targets_export_name}.cmake) FILE ${PROJECT_BINARY_DIR}/${targets_export_name}.cmake)
# Install version, config and target files. # Install version, config and target files.
install( install(
FILES ${project_config} ${version_config} FILES ${project_config} ${version_config}
DESTINATION ${CXXOPTS_CMAKE_DIR}) DESTINATION ${CXXOPTS_CMAKE_DIR})
install(EXPORT ${targets_export_name} DESTINATION ${CXXOPTS_CMAKE_DIR} install(EXPORT ${targets_export_name} DESTINATION ${CXXOPTS_CMAKE_DIR}
NAMESPACE cxxopts::) NAMESPACE cxxopts::)
# Install the header file and export the target # Install the header file and export the target
install(TARGETS cxxopts EXPORT ${targets_export_name} DESTINATION lib) install(TARGETS cxxopts EXPORT ${targets_export_name} DESTINATION lib)
install(FILES ${PROJECT_SOURCE_DIR}/include/cxxopts.hpp DESTINATION include) install(FILES ${PROJECT_SOURCE_DIR}/include/cxxopts.hpp DESTINATION include)
endif()
add_subdirectory(src) add_subdirectory(src)
add_subdirectory(test) add_subdirectory(test)