CMakeLists.txt
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cmake_minimum_required(VERSION 3.3.2)
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project(SDL_image C)
if (ANDROID)
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else()
find_package(SDL2 REQUIRED)
endif()
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option(SUPPORT_JPG "Support loading JPEG images" ON)
option(SUPPORT_PNG "Support loading PNG images" ON)
option(SUPPORT_WEBP "Support loading WEBP images" OFF)
option(BUILD_SHOWIMAGE "Build the showimage sample program" OFF)
option(BUILD_SHARED_LIBS "Build the library as a shared library" ON)
add_library(SDL2_image SHARED)
target_sources(SDL2_image PRIVATE IMG.c IMG_png.c IMG_bmp.c IMG_gif.c
IMG_jpg.c IMG_lbm.c IMG_pcx.c IMG_pnm.c IMG_svg.c IMG_tga.c
IMG_tif.c IMG_webp.c IMG_WIC.c IMG_xcf.c IMG_xpm.c IMG_xv.c IMG_xxx.c)
target_compile_definitions(SDL2_image PRIVATE
-DLOAD_BMP -DLOAD_GIF -DLOAD_LBM -DLOAD_PCX -DLOAD_PNM
-DLOAD_TGA -DLOAD_XCF -DLOAD_XPM -DLOAD_XV -DLOAD_XPM)
if (SUPPORT_JPG)
target_compile_definitions(SDL2_image PRIVATE -DLOAD_JPG)
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add_subdirectory(external/jpeg-9c)
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target_link_libraries(SDL2_image PRIVATE jpeg)
endif()
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if (SUPPORT_PNG)
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# missing libpng.vers
set(HAVE_LD_VERSION_SCRIPT OFF CACHE BOOL "" FORCE)
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target_compile_definitions(SDL2_image PRIVATE -DLOAD_PNG)
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add_subdirectory(external/libpng-1.6.37)
include_directories(external/libpng-1.6.37)
target_link_libraries(SDL2_image PRIVATE png)
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if (SUPPORT_WEBP)
target_compile_definitions(SDL2_image PRIVATE -DLOAD_WEBP)
# missing cpufeatures
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add_subdirectory(external/libwebp-1.0.3)
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target_link_libraries(SDL2_image PRIVATE webp)
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add_library(SDL2::image ALIAS SDL2_image)
target_include_directories(SDL2_image PUBLIC ${CMAKE_CURRENT_SOURCE_DIR})
if (ANDROID)
target_link_libraries(SDL2_image PRIVATE SDL2)
else()
target_link_libraries(SDL2_image PRIVATE SDL2::SDL2)
endif()
if(BUILD_SHOWIMAGE)
add_executable(showimage showimage.c)
target_link_libraries(showimage PRIVATE SDL2::SDL2 SDL2::image)
endif()