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Use system SDL2 if can be found

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This commit is contained in:
Brad Svercl 2021-01-14 21:37:55 -06:00
parent 2e533e2a31
commit 502f57ad3d
1 changed files with 18 additions and 12 deletions
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30
CMakeLists.txt
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@ -92,20 +92,26 @@ if (SDL2_ENABLED)
if (EMSCRIPTEN)
set_target_properties(blah PROPERTIES COMPILE_FLAGS "-s USE_SDL=2")
else()
# TODO: Maybe select system SDL2 and then fallback to downloading if it doesn't exist
include(FetchContent)
FetchContent_Declare(
SDL2
GIT_REPOSITORY https://github.com/SDL-mirror/SDL
GIT_TAG release-2.0.14 # grab latest release
)
FetchContent_GetProperties(SDL2)
if (NOT sdl2_POPULATED)
FetchContent_Populate(SDL2)
add_subdirectory(${sdl2_SOURCE_DIR} ${sdl2_BINARY_DIR})
# Attempt to find SDL2
find_package(SDL2 QUIET)
# If CMake cannot find SDL2 library, then it gets downloaded and compiled that way
if (NOT ${SDL2_FOUND})
include(FetchContent)
FetchContent_Declare(
SDL2
GIT_REPOSITORY https://github.com/SDL-mirror/SDL
GIT_TAG release-2.0.14 # grab latest stable release
)
FetchContent_GetProperties(SDL2)
if (NOT sdl2_POPULATED)
FetchContent_Populate(SDL2)
add_subdirectory(${sdl2_SOURCE_DIR} ${sdl2_BINARY_DIR})
endif()
endif()
set(LIBS ${LIBS} SDL2) # link to SDL2 static library
# Either way we are linking to SDL2
set(LIBS ${LIBS} SDL2)
endif()
endif()