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cmake,wasm: simplify SDL2 related flags

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Use the result of find_package(SDL2); the cmake module is available
prior to downloading the port. Previously the result of this call was
ignored. This also updates the flags to use the results of
SDL2_LIBRARIES which may be more future proof than specifying them
manually.

SDL2_INCLUDE_DIRS do not appear to be necessary with -sUSE_SDL2.

Based in part on:
d0b3e8efe3/ports/libwebp/0008-sdl.patch

Bug: b:301040580
Change-Id: I83386b6c3d9628e3f0d9d17f20d47338d0db044a
This commit is contained in:
James Zern 2024-03-28 17:51:39 -07:00
parent d537cd3704
commit e2c8f233ef
1 changed files with 9 additions and 6 deletions
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15
CMakeLists.txt
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@ -694,13 +694,10 @@ if(WEBP_BUILD_WEBP_JS)
else()
set(emscripten_stack_size "-sTOTAL_STACK=5MB")
endif()
# Set SDL2 flags so that ports are downloaded by emscripten.
set(EMSCRIPTEN_SDL2_FLAGS "-sUSE_SDL=2 -sUSE_SDL_IMAGE=2")
set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${EMSCRIPTEN_SDL2_FLAGS}")
find_package(SDL2 REQUIRED)
# wasm2js does not support SIMD.
if(NOT WEBP_ENABLE_SIMD)
# JavaScript version
find_package(SDL2 QUIET)
add_executable(webp_js ${CMAKE_CURRENT_SOURCE_DIR}/extras/webp_to_sdl.c)
target_link_libraries(webp_js webpdecoder SDL2)
target_include_directories(webp_js PRIVATE ${CMAKE_CURRENT_BINARY_DIR})
@ -708,10 +705,13 @@ if(WEBP_BUILD_WEBP_JS)
set_target_properties(
webp_js
PROPERTIES
# Emscripten puts -sUSE_SDL2=1 in this variable, though it's needed at
# compile time to ensure the headers are downloaded.
COMPILE_OPTIONS "${SDL2_LIBRARIES}"
LINK_FLAGS
"-sWASM=0 ${emscripten_stack_size} \
-sEXPORTED_FUNCTIONS=_WebPToSDL -sINVOKE_RUN=0 \
-sEXPORTED_RUNTIME_METHODS=cwrap ${EMSCRIPTEN_SDL2_FLAGS} \
-sEXPORTED_RUNTIME_METHODS=cwrap ${SDL2_LIBRARIES} \
-sALLOW_MEMORY_GROWTH")
set_target_properties(webp_js PROPERTIES OUTPUT_NAME webp)
target_compile_definitions(webp_js PUBLIC EMSCRIPTEN WEBP_HAVE_SDL)
@ -724,10 +724,13 @@ if(WEBP_BUILD_WEBP_JS)
set_target_properties(
webp_wasm
PROPERTIES
# Emscripten puts -sUSE_SDL2=1 in this variable, though it's needed at
# compile time to ensure the headers are downloaded.
COMPILE_OPTIONS "${SDL2_LIBRARIES}"
LINK_FLAGS
"-sWASM=1 ${emscripten_stack_size} \
-sEXPORTED_FUNCTIONS=_WebPToSDL -sINVOKE_RUN=0 \
-sEXPORTED_RUNTIME_METHODS=cwrap ${EMSCRIPTEN_SDL2_FLAGS} \
-sEXPORTED_RUNTIME_METHODS=cwrap ${SDL2_LIBRARIES} \
-sALLOW_MEMORY_GROWTH")
target_compile_definitions(webp_wasm PUBLIC EMSCRIPTEN WEBP_HAVE_SDL)