CMakePackageConfigHelpers example sets redundant VERSION
The Example Generating Package Files documentation contains example content for a CMakeLists.txt
and the typical corresponding FooConfig.cmake.in
:
CMakeLists.txt
:
set(INCLUDE_INSTALL_DIR include/ ... CACHE )
set(LIB_INSTALL_DIR lib/ ... CACHE )
set(SYSCONFIG_INSTALL_DIR etc/foo/ ... CACHE )
#...
include(CMakePackageConfigHelpers)
configure_package_config_file(FooConfig.cmake.in
${CMAKE_CURRENT_BINARY_DIR}/FooConfig.cmake
INSTALL_DESTINATION ${LIB_INSTALL_DIR}/Foo/cmake
PATH_VARS INCLUDE_INSTALL_DIR SYSCONFIG_INSTALL_DIR)
write_basic_package_version_file(
${CMAKE_CURRENT_BINARY_DIR}/FooConfigVersion.cmake
VERSION 1.2.3
COMPATIBILITY SameMajorVersion )
install(FILES ${CMAKE_CURRENT_BINARY_DIR}/FooConfig.cmake
${CMAKE_CURRENT_BINARY_DIR}/FooConfigVersion.cmake
DESTINATION ${LIB_INSTALL_DIR}/Foo/cmake )
FooConfig.cmake.in
:
set(FOO_VERSION x.y.z)
...
@PACKAGE_INIT@
...
set_and_check(FOO_INCLUDE_DIR "@PACKAGE_INCLUDE_INSTALL_DIR@")
set_and_check(FOO_SYSCONFIG_DIR "@PACKAGE_SYSCONFIG_INSTALL_DIR@")
check_required_components(Foo)
But... why would FooConfig.cmake.in
be manually setting the FOO_VERSION
? Isn't that the entire point of the generated FooConfigVersion.cmake
? Feels like that set(FOO_VERSION...)
line shouldn't be there at all.