mirror of
https://github.com/webmproject/libwebp.git
synced 2024-11-20 12:28:26 +01:00
004d569086
This will well isolate contributions for original code,
generated code and SIMD (especially for Android).
Change-Id: Ie47664decc7f43c2f57260a72cab951c347281a7
(cherry picked from commit 6c62841076)
64 lines
2.1 KiB
CMake
64 lines
2.1 KiB
CMake
## Check for SIMD extensions.
|
|
set(WEBP_SIMD_FLAGS "SSE2;SSE41;AVX2")
|
|
set(WEBP_SIMD_FILE_EXTENSIONS "_sse2.c;_sse41.c;_avx2.c")
|
|
if(MSVC)
|
|
# MSVC does not have a SSE4 flag but AVX2 support implies
|
|
# SSE4 support.
|
|
set(SIMD_ENABLE_FLAGS "/arch:SSE2;/arch:AVX2;/arch:AVX2")
|
|
set(SIMD_DISABLE_FLAGS)
|
|
else()
|
|
set(SIMD_ENABLE_FLAGS "-msse2;-msse4.1;-mavx2")
|
|
set(SIMD_DISABLE_FLAGS "-mno-sse2;-mno-sse4.1;-mno-avx2")
|
|
endif()
|
|
|
|
set(WEBP_SIMD_FILES_TO_NOT_INCLUDE)
|
|
set(WEBP_SIMD_FILES_TO_INCLUDE)
|
|
set(WEBP_SIMD_FLAGS_TO_INCLUDE)
|
|
|
|
list(LENGTH WEBP_SIMD_FLAGS WEBP_SIMD_FLAGS_LENGTH)
|
|
math(EXPR WEBP_SIMD_FLAGS_RANGE "${WEBP_SIMD_FLAGS_LENGTH} - 1")
|
|
|
|
foreach(I_SIMD RANGE ${WEBP_SIMD_FLAGS_RANGE})
|
|
list(GET WEBP_SIMD_FLAGS ${I_SIMD} WEBP_SIMD_FLAG)
|
|
list(GET SIMD_ENABLE_FLAGS ${I_SIMD} SIMD_COMPILE_FLAG)
|
|
set(CMAKE_REQUIRED_FLAGS ${SIMD_COMPILE_FLAG})
|
|
check_c_source_compiles("
|
|
#include \"${CMAKE_CURRENT_LIST_DIR}/../src/dsp/dsp.h\"
|
|
int main(void) {
|
|
#if !defined(WEBP_USE_${WEBP_SIMD_FLAG})
|
|
this is not valid code
|
|
#endif
|
|
return 0;
|
|
}
|
|
"
|
|
WEBP_HAVE_${WEBP_SIMD_FLAG}
|
|
)
|
|
|
|
# Check which files we should include or not.
|
|
list(GET WEBP_SIMD_FILE_EXTENSIONS ${I_SIMD} WEBP_SIMD_FILE_EXTENSION)
|
|
file(GLOB SIMD_FILES "${CMAKE_CURRENT_LIST_DIR}/../"
|
|
"src/dsp/*${WEBP_SIMD_FILE_EXTENSION}"
|
|
)
|
|
if(WEBP_HAVE_${WEBP_SIMD_FLAG})
|
|
# Memorize the file and flags.
|
|
foreach(FILE ${SIMD_FILES})
|
|
list(APPEND WEBP_SIMD_FILES_TO_INCLUDE ${FILE})
|
|
list(APPEND WEBP_SIMD_FLAGS_TO_INCLUDE ${SIMD_COMPILE_FLAG})
|
|
endforeach()
|
|
else()
|
|
# Remove the file from the list.
|
|
foreach(FILE ${SIMD_FILES})
|
|
list(APPEND WEBP_SIMD_FILES_NOT_TO_INCLUDE ${FILE})
|
|
endforeach()
|
|
# Explicitly disable SIMD.
|
|
if(SIMD_DISABLE_FLAGS)
|
|
list(GET SIMD_DISABLE_FLAGS ${I_SIMD} SIMD_COMPILE_FLAG)
|
|
include(CheckCCompilerFlag)
|
|
check_c_compiler_flag(${SIMD_COMPILE_FLAG} HAS_COMPILE_FLAG)
|
|
if(HAS_COMPILE_FLAG)
|
|
set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${SIMD_COMPILE_FLAG}")
|
|
endif()
|
|
endif()
|
|
endif()
|
|
endforeach()
|