add cmake options to perfer system libs to libwebp

.github/workflows/ci.yml

@@ -153,7 +153,7 @@ jobs:
     - name: Install Dependencies
       env:
         VCPKG_BINARY_SOURCES: "clear;x-gha,readwrite"
-      run: vcpkg install pkgconf:x64-windows libsodium:x64-windows-static pthreads:x64-windows-static opus:x64-windows-static libvpx:x64-windows-static libpng:x64-windows-static libjpeg-turbo:x64-windows-static freetype:x64-windows-static
+      run: vcpkg install pkgconf:x64-windows libsodium:x64-windows-static pthreads:x64-windows-static opus:x64-windows-static libvpx:x64-windows-static libwebp:x64-windows-static libpng:x64-windows-static libjpeg-turbo:x64-windows-static freetype:x64-windows-static
 
     # setup vs env
     - uses: ilammy/msvc-dev-cmd@v1
@@ -170,7 +170,7 @@ jobs:
     #    key: ${{github.event.repository.name}}-${{github.job}}
 
     - name: Configure CMake
-      run: cmake -G Ninja -B ${{github.workspace}}/build -DCMAKE_BUILD_TYPE=${{env.BUILD_TYPE}} -DCMAKE_TOOLCHAIN_FILE=C:/vcpkg/scripts/buildsystems/vcpkg.cmake -DVCPKG_TARGET_TRIPLET=x64-windows-static -DSDLIMAGE_VENDORED=OFF -DSDLIMAGE_DEPS_SHARED=OFF -DSDLIMAGE_JXL=OFF -DSDLIMAGE_AVIF=OFF -DPKG_CONFIG_EXECUTABLE=C:/vcpkg/installed/x64-windows/tools/pkgconf/pkgconf.exe
+      run: cmake -G Ninja -B ${{github.workspace}}/build -DCMAKE_BUILD_TYPE=${{env.BUILD_TYPE}} -DCMAKE_TOOLCHAIN_FILE=C:/vcpkg/scripts/buildsystems/vcpkg.cmake -DVCPKG_TARGET_TRIPLET=x64-windows-static -DTOMATO_DEP_LIBWEBP_USE_SYSTEM=ON -DSDLIMAGE_VENDORED=OFF -DSDLIMAGE_DEPS_SHARED=OFF -DSDLIMAGE_JXL=OFF -DSDLIMAGE_AVIF=OFF -DPKG_CONFIG_EXECUTABLE=C:/vcpkg/installed/x64-windows/tools/pkgconf/pkgconf.exe
 
     - name: Build
       run: cmake --build ${{github.workspace}}/build --config ${{env.BUILD_TYPE}} -j 4 -t tomato

external/libwebp/CMakeLists.txt

@@ -1,8 +1,36 @@
-cmake_minimum_required(VERSION 3.14...3.24 FATAL_ERROR)
+cmake_minimum_required(VERSION 3.16...3.24 FATAL_ERROR)
 
 include(FetchContent)
 
-if (NOT TARGET libwebp)
+option(TOMATO_DEP_LIBWEBP_USE_SYSTEM "Prefer system provided libwebp" OFF)
+
+if (TOMATO_DEP_LIBWEBP_USE_SYSTEM)
+	if (NOT TARGET WebP::libwebpmux)
+		find_package(WebP CONFIG GLOBAL QUIET COMPONENTS webp webpdemux libwebpmux)
+	endif()
+
+	#if (NOT TARGET libwebp)
+	#    find_package(WebP GLOBAL)
+	#endif()
+
+	if (TARGET WebP::webp)
+		message(STATUS "found WebP::webp")
+	endif()
+	if (TARGET WebP::webpdemux)
+		message(STATUS "found WebP::webpdemux")
+	endif()
+	if (TARGET WebP::libwebpmux)
+		message(STATUS "found WebP::libwebpmux")
+	endif()
+
+	if (TARGET WebP::libwebpmux)
+		message(STATUS "found system libwebp")
+	else()
+		message(STATUS "system libwebp not found")
+	endif()
+endif()
+
+if (NOT TARGET WebP::libwebpmux)
 	set(WEBP_LINK_STATIC ON CACHE BOOL "" FORCE)
 	set(WEBP_BUILD_ANIM_UTILS OFF CACHE BOOL "" FORCE)
 	set(WEBP_BUILD_CWEBP OFF CACHE BOOL "" FORCE)
@@ -19,11 +47,13 @@ if (NOT TARGET libwebp)
 
 	FetchContent_Declare(libwebp
 		GIT_REPOSITORY https://github.com/webmproject/libwebp
-		GIT_TAG v1.4.0
+		GIT_TAG v1.5.0
 		FIND_PACKAGE_ARGS
 	)
 	FetchContent_MakeAvailable(libwebp)
+
+	add_library(WebP::webp ALIAS webp)
+	add_library(WebP::webpdemux ALIAS webpdemux)
+	add_library(WebP::libwebpmux ALIAS libwebpmux)
 endif()
 
-#add_subdirectory(./libwebp EXCLUDE_FROM_ALL)
-

external/sdl/CMakeLists.txt

@@ -7,7 +7,7 @@ option(TOMATO_DEP_SDL_USE_SYSTEM "Prefer system provided SDL" OFF)
 if (TOMATO_DEP_SDL_USE_SYSTEM)
 	if (NOT TARGET SDL3::SDL3)
 		#find_package(SDL3 REQUIRED CONFIG REQUIRED COMPONENTS SDL3-shared)
-		find_package(SDL3 REQUIRED CONFIG GLOBAL QUIET)
+		find_package(SDL3 CONFIG GLOBAL QUIET)
 	endif()
 
 	if (TARGET SDL3::SDL3)

external/sdl_image/CMakeLists.txt

@@ -6,7 +6,7 @@ option(TOMATO_DEP_SDL_IMAGE_USE_SYSTEM "Prefer system provided SDL_image" OFF)
 
 if (TOMATO_DEP_SDL_IMAGE_USE_SYSTEM)
 	if (NOT TARGET SDL3_image::SDL3_image)
-		find_package(SDL3_image REQUIRED CONFIG GLOBAL QUIET)
+		find_package(SDL3_image CONFIG GLOBAL QUIET)
 	endif()
 
 	if (TARGET SDL3_image::SDL3_image)

flake.nix

@@ -90,6 +90,8 @@
           libopus
           libvpx
 
+          libwebp
+
           freetype
         ] ++ self.packages.${system}.default.dlopenBuildInputs;
 
@@ -104,8 +106,9 @@
           # TODO: use package instead
           "-DFETCHCONTENT_SOURCE_DIR_JSON=${nlohmann-json}" # we care about the version
           "-DFETCHCONTENT_SOURCE_DIR_ZSTD=${pkgs.zstd.src}" # we dont care about the version (we use 1.4.x features)
-          "-DFETCHCONTENT_SOURCE_DIR_LIBWEBP=${pkgs.libwebp.src}"
           "-DFETCHCONTENT_SOURCE_DIR_SDL3=${sdl3}"
+          #"-DFETCHCONTENT_SOURCE_DIR_LIBWEBP=${pkgs.libwebp.src}"
+          "-DTOMATO_DEP_LIBWEBP_USE_SYSTEM=ON"
           "-DFETCHCONTENT_SOURCE_DIR_SDL3_IMAGE=${sdl3_image}"
           "-DSDLIMAGE_JXL=ON"
           "-DFETCHCONTENT_SOURCE_DIR_PLUTOSVG=${plutosvg}" # not in pkgs

src/CMakeLists.txt

@@ -194,8 +194,8 @@ target_link_libraries(tomato PUBLIC
 
 	stb_image
 	stb_image_write
-	webpdemux
-	libwebpmux # the f why (needed for anim encode)
+	WebP::webpdemux
+	WebP::libwebpmux # the f why (needed for anim encode)
 	qoi
 	SDL3_image::SDL3_image
 )