75222ccef8
Changes how dependency options are handled and moves them out of `CMakeLists.txt`. Major changes: 1. The static default now takes `TARGET_SUPPORTS_SHARED_LIBS` into account 2. The `DIST` setting no longer affects the static default. 3. The static option is now visible for system dependencies as well. (it was previously hidden by `cmake_dependent_option`). 4. The auto-detection mechanism for `libfmt` and `SDL_image` only applies if the setting has not been set. 5. SDL2 on Android is now also linked statically, resulting in a 1.1 MiB smaller APK. When using non-system dependencies, the default should always be static, as there are 2 main use cases for these: 1. Dependencies that we must currently vendor because our forks have significant changes that are not yet merged/released upstream. 2. Platforms that have no system packages, such as Android and iOS. In both cases, static linking is the most appropriate default.
59 lines
2.1 KiB
CMake
59 lines
2.1 KiB
CMake
include(dependency_options)
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if(NOT DEFINED DEVILUTIONX_SYSTEM_LIBPNG)
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find_package(PNG QUIET)
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if(PNG_FOUND)
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message("-- Found png ${PNG_VERSION_STRING}")
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else()
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message("-- Suitable system png package not found, will use png from source")
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set(DEVILUTIONX_SYSTEM_LIBPNG OFF)
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endif()
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elseif(DEVILUTIONX_SYSTEM_LIBPNG)
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# In previous versions of DevilutionX, libpng could be built from
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# source even if `DEVILUTIONX_SYSTEM_LIBPNG` was true.
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# Detect the older CMake cache and update to the new behaviour.
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#
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# This is a temporary upgrade path that will be removed one week from commit date.
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find_package(PNG QUIET)
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if(NOT PNG_FOUND)
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set(DEVILUTIONX_SYSTEM_LIBPNG OFF CACHE BOOL "" FORCE)
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endif()
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endif()
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dependency_options("libpng" DEVILUTIONX_SYSTEM_LIBPNG ON DEVILUTIONX_STATIC_LIBPNG)
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if(DEVILUTIONX_SYSTEM_LIBPNG)
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find_package(PNG REQUIRED)
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else()
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add_subdirectory(../libpng libpng)
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endif()
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include(FetchContent_MakeAvailableExcludeFromAll)
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include(FetchContent)
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if(USE_SDL1)
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FetchContent_Declare(SDL_image
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URL https://github.com/libsdl-org/SDL_image/archive/refs/tags/release-1.2.12.tar.gz
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URL_HASH MD5=5d499e3cf6be00bfb0a7bff1cbdbd348
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)
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else()
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FetchContent_Declare(SDL_image
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URL https://github.com/libsdl-org/SDL_image/archive/refs/tags/release-2.0.5.tar.gz
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URL_HASH MD5=3446ed7ee3c700065dcb33426a9b0c6e
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)
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endif()
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FetchContent_MakeAvailableExcludeFromAll(SDL_image)
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if(DEVILUTIONX_STATIC_SDL_IMAGE)
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add_library(SDL_image STATIC ${CMAKE_CURRENT_LIST_DIR}/IMG.c ${sdl_image_SOURCE_DIR}/IMG_png.c)
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else()
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add_library(SDL_image SHARED ${CMAKE_CURRENT_LIST_DIR}/IMG.c ${sdl_image_SOURCE_DIR}/IMG_png.c)
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endif()
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target_include_directories(SDL_image PRIVATE ${sdl_image_SOURCE_DIR})
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target_compile_definitions(SDL_image PRIVATE LOAD_PNG SDL_IMAGE_USE_COMMON_BACKEND)
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target_link_libraries(SDL_image PNG::PNG)
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if(USE_SDL1)
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target_link_libraries(SDL_image ${SDL_LIBRARY})
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else()
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target_link_libraries(SDL_image SDL2::SDL2)
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add_library(SDL2::SDL2_image ALIAS SDL_image)
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endif()
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