mirror of
https://github.com/wesnoth/wesnoth
synced 2024-09-20 07:51:33 +00:00
105 lines
3.9 KiB
CMake
105 lines
3.9 KiB
CMake
#[=======================================================================[.rst:
|
|
FindSDL2
|
|
--------
|
|
|
|
Find the SDL2 includes and libraries.
|
|
|
|
IMPORTED Targets
|
|
^^^^^^^^^^^^^^^^
|
|
|
|
This module defines the `IMPORTED` targets ``SDL2::SDL2`` and ``SDL2::SDL2main``, if
|
|
SDL2 has been found.
|
|
|
|
Result Variables
|
|
^^^^^^^^^^^^^^^^
|
|
|
|
This module defines the following variables:
|
|
|
|
SDL2_FOUND - True if SDL2 found.
|
|
SDL2_INCLUDE_DIRS - Where to find SDL2/SDL.h.
|
|
SDL2_LIBRARIES - Libraries when using SDL2.
|
|
|
|
#]=======================================================================]
|
|
|
|
include(FindPackageHandleStandardArgs)
|
|
|
|
# first specifically look for the CMake config version of SDL2 (either system or package manager)
|
|
# provides two TARGETs SDL2::SDL2 and SDL2::SDL2Main
|
|
find_package(SDL2 QUIET NO_MODULE)
|
|
|
|
# after the CONFIG type `find_package` we get, if available, a SDL2_VERSION var
|
|
# if we found the SDL2 cmake package then we are almost done
|
|
# we still need to check the version for some edge cases where the -version.cmake file
|
|
# is missing
|
|
if(SDL2_FOUND)
|
|
find_package_handle_standard_args(SDL2 HANDLE_COMPONENTS CONFIG_MODE)
|
|
|
|
# in some cases the target is an ALIAS, we want the original
|
|
get_target_property(_SDL2_ORIGINAL_TARGET "SDL2::SDL2" ALIASED_TARGET)
|
|
|
|
# if it's a regular target, just set it to SDL2::SDL2
|
|
if(NOT _SDL2_ORIGINAL_TARGET)
|
|
set(_SDL2_ORIGINAL_TARGET "SDL2::SDL2")
|
|
endif()
|
|
|
|
get_target_property(_SDL2_INCLUDE_DIRS_FROM_CONFIG "${_SDL2_ORIGINAL_TARGET}" INTERFACE_INCLUDE_DIRECTORIES)
|
|
|
|
# in the original sdl2-config.cmake we get only <path>/include/SDL2 and in vcpkg we that + <path>/include/
|
|
if(_SDL2_INCLUDE_DIRS_FROM_CONFIG MATCHES ".*/include/SDL2.*")
|
|
get_filename_component(_SDL2_INCLUDE_DIRS "${_SDL2_INCLUDE_DIRS_FROM_CONFIG}" DIRECTORY)
|
|
list(APPEND _SDL2_INCLUDE_DIRS_FROM_CONFIG "${_SDL2_INCLUDE_DIRS}")
|
|
# we can endup with a duplicate with vcpkg
|
|
list(REMOVE_DUPLICATES _SDL2_INCLUDE_DIRS_FROM_CONFIG)
|
|
|
|
set_property(TARGET "${_SDL2_ORIGINAL_TARGET}" PROPERTY INTERFACE_INCLUDE_DIRECTORIES "${_SDL2_INCLUDE_DIRS_FROM_CONFIG}")
|
|
endif()
|
|
|
|
get_target_property(_SDL2_INCLUDE_DIRS_FROM_CONFIG "${_SDL2_ORIGINAL_TARGET}" INTERFACE_INCLUDE_DIRECTORIES)
|
|
|
|
mark_as_advanced(SDL2_INCLUDE_DIRS SDL2_LIBRARIES)
|
|
|
|
if(NOT TARGET SDL2::SDL2main)
|
|
# In SDL 2.24.0, the CONFIG method doesn't add a target for libSDL2main. Seen on Debian
|
|
# Unstable, and seems to be https://github.com/libsdl-org/SDL/issues/6119 which is reported
|
|
# upstream on macOS. For consistency's sake, let's add a phony library we can link with,
|
|
# which is also the workaround that upstream suggests in the bug report.
|
|
message(STATUS "SDL2 found via CONFIG, but it didn't define SDL2::SDL2main, adding dummy target")
|
|
add_library(SDL2::SDL2main INTERFACE IMPORTED)
|
|
endif()
|
|
|
|
return()
|
|
endif()
|
|
|
|
# let's try pkg-config
|
|
find_package(PkgConfig QUIET)
|
|
if(PKG_CONFIG_FOUND)
|
|
pkg_check_modules(PC_SDL2 REQUIRED sdl2>=${SDL2_FIND_VERSION})
|
|
endif()
|
|
|
|
find_package_handle_standard_args(SDL2 DEFAULT_MSG PC_SDL2_INCLUDE_DIRS PC_SDL2_LIBRARIES)
|
|
|
|
if(SDL2_FOUND)
|
|
if(NOT TARGET SDL2::SDL2)
|
|
# the .pc file for SDL2 contains `<prefix>/include/SDL2` which is different from the cmake version
|
|
# i.e. `<prefix>/include`
|
|
get_filename_component(SDL2_INCLUDE_DIRS ${PC_SDL2_INCLUDE_DIRS} DIRECTORY)
|
|
|
|
set(SDL2_INCLUDE_DIRS ${SDL2_INCLUDE_DIRS} CACHE STRING "SDL2 include directories")
|
|
set(SDL2_LIBRARIES ${PC_SDL2_LIBRARIES} CACHE STRING "SDL2 libraries")
|
|
|
|
mark_as_advanced(SDL2_INCLUDE_DIRS SDL2_LIBRARIES)
|
|
|
|
add_library(SDL2::SDL2 INTERFACE IMPORTED)
|
|
set_target_properties(SDL2::SDL2 PROPERTIES
|
|
INTERFACE_INCLUDE_DIRECTORIES "${SDL2_INCLUDE_DIRS}"
|
|
INTERFACE_LINK_DIRECTORIES "${PC_SDL2_LIBDIR}"
|
|
INTERFACE_LINK_LIBRARIES "${SDL2_LIBRARIES}")
|
|
endif()
|
|
|
|
if(NOT TARGET SDL2::SDL2main)
|
|
# on *nix it seems that .pc files don't actually include libSDL2main, but for consistency's sake,
|
|
# let's add a phony library we can link with
|
|
add_library(SDL2::SDL2main INTERFACE IMPORTED)
|
|
endif()
|
|
endif()
|