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chore: make libwebp optional and support system libwebp (#1387)

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Co-authored-by: leejet <leejet714@gmail.com>
This commit is contained in:
Wagner Bruna 2026-04-05 12:52:05 -03:00 committed by GitHub
parent 87ecb95cbc
commit 687a81f251
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2 changed files with 34 additions and 2 deletions
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34
CMakeLists.txt
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@ -22,6 +22,16 @@ else()
set(SD_STANDALONE OFF)
endif()
set(SD_SUBMODULE_WEBP FALSE)
if(EXISTS "${CMAKE_CURRENT_SOURCE_DIR}/thirdparty/libwebp/CMakeLists.txt")
set(SD_SUBMODULE_WEBP TRUE)
endif()
if(SD_SUBMODULE_WEBP)
set(SD_WEBP_DEFAULT ON)
else()
set(SD_WEBP_DEFAULT ${SD_USE_SYSTEM_WEBP})
endif()
#
# Option list
#
@ -29,7 +39,8 @@ endif()
# general
#option(SD_BUILD_TESTS "sd: build tests" ${SD_STANDALONE})
option(SD_BUILD_EXAMPLES "sd: build examples" ${SD_STANDALONE})
option(SD_WEBP "sd: enable WebP image I/O support" ON)
option(SD_WEBP "sd: enable WebP image I/O support" ${SD_WEBP_DEFAULT})
option(SD_USE_SYSTEM_WEBP "sd: link against system libwebp" OFF)
option(SD_CUDA "sd: cuda backend" OFF)
option(SD_HIPBLAS "sd: rocm backend" OFF)
option(SD_METAL "sd: metal backend" OFF)
@ -79,6 +90,27 @@ if(SD_MUSA)
endif()
if(SD_WEBP)
if(NOT SD_SUBMODULE_WEBP AND NOT SD_USE_SYSTEM_WEBP)
message(FATAL_ERROR "WebP support enabled but no source found.
Either initialize the submodule:\n git submodule update --init thirdparty/libwebp\n\n"
"Or link against system library:\n cmake (...) -DSD_USE_SYSTEM_WEBP=ON")
endif()
if(SD_USE_SYSTEM_WEBP)
find_package(WebP REQUIRED)
add_library(webp ALIAS WebP::webp)
# libwebp CMake target naming is not consistent across versions/distros.
# Some export WebP::libwebpmux, others export WebP::webpmux.
if(TARGET WebP::libwebpmux)
add_library(libwebpmux ALIAS WebP::libwebpmux)
elseif(TARGET WebP::webpmux)
add_library(libwebpmux ALIAS WebP::webpmux)
else()
message(FATAL_ERROR
"Could not find a compatible webpmux target in system WebP package. "
"Expected WebP::libwebpmux or WebP::webpmux."
)
endif()
endif()
add_compile_definitions(SD_USE_WEBP)
endif()

2
thirdparty/CMakeLists.txt vendored
View File

@ -2,7 +2,7 @@ set(Z_TARGET zip)
add_library(${Z_TARGET} OBJECT zip.c zip.h miniz.h)
target_include_directories(${Z_TARGET} PUBLIC .)
if(SD_WEBP)
if(SD_WEBP AND NOT SD_USE_SYSTEM_WEBP)
set(WEBP_BUILD_ANIM_UTILS OFF)
set(WEBP_BUILD_CWEBP OFF)
set(WEBP_BUILD_DWEBP OFF)