SDL2 image: Add features for libjpeg, tiff and webp (#3531)

* SDL2 image: Add features for libjpeg, tiff and webp

* [sdl2-image] Avoid passing lists through vcpkg_configure_cmake()

ports/sdl2-image/CMakeLists.txt

@@ -3,7 +3,7 @@ project(SDL2_image C)
 
 ### configuration ###
 
-list(APPEND CMAKE_MODULE_PATH "${CMAKE_CURRENT_LIST_DIR}/cmake")
+list(APPEND CMAKE_MODULE_PATH "${CURRENT_INSTALLED_DIR}/share/libwebp")
 # enable all file formats which are supported natively
 set(SUPPORTED_FORMATS BMP GIF LBM PCX PNM TGA XPM XCF XV SVG)
 
@@ -11,6 +11,8 @@ set(SUPPORTED_FORMATS BMP GIF LBM PCX PNM TGA XPM XCF XV SVG)
 # first try to load them statically (lib file in vcpkg installation)
 # if this fails try to make them a dynamic dependency (dll will be loaded at runtime) if possible. vcpkg cannot resolve these dependencies!
 # else do not support this file format at all
+
+# Can be explicitly enabled or disabled via USE_XYZ
 set(DEPENDENCIES PNG JPEG TIFF WEBP)
 
 # patch library names for preprocessor flags
@@ -62,7 +64,10 @@ include_directories(${CMAKE_SOURCE_DIR})
 target_link_libraries(SDL2_image ${SDL_LIBRARY})
 
 # external dependencies
-foreach(DEPENDENCY ${DEPENDENCIES})
+foreach(DEPENDENCY IN LISTS DEPENDENCIES)
+    if(NOT USE_${DEPENDENCY})
+        continue()
+    endif()
     find_package(${DEPENDENCY})
 
     if(NOT DEFINED ${DEPENDENCY}_FLAG)

ports/sdl2-image/CONTROL

@@ -1,5 +1,16 @@
 Source: sdl2-image
-Version: 2.0.2-1
-Build-Depends: sdl2, libpng, libjpeg-turbo, tiff, libwebp
+Version: 2.0.2-3
+Build-Depends: sdl2, libpng
 Description: SDL_image is an image file loading library. It loads images as SDL surfaces and textures, and supports the following formats: BMP, GIF, JPEG, LBM, PCX, PNG, PNM, TGA, TIFF, WEBP, XCF, XPM, XV
 
+Feature: libjpeg-turbo
+Description: Support for JPEG image format
+Build-Depends: libjpeg-turbo
+
+Feature: tiff
+Description: Support for TIFF image format
+Build-Depends: tiff
+
+Feature: libwebp
+Description: Support for WEBP image format.
+Build-Depends: libwebp

ports/sdl2-image/FindWEBP.cmake

@@ -1,24 +0,0 @@
-# - Find WEBP
-# Find the WEBP library 
-# This module defines
-#  WEBP_INCLUDE_DIRS, where to find webp/decode.h
-#  WEBP_LIBRARIES, the libraries needed to use WEBP
-#
-
-find_path(WEBP_INCLUDE_DIRS
-    NAMES webp/decode.h
-)
-mark_as_advanced(WEBP_INCLUDE_DIRS)
-
-find_library(
-    WEBP_LIBRARIES
-    NAMES webp
-)
-
-find_library(WEBP_LIBRARY_RELEASE NAMES webp PATH_SUFFIXES lib)
-find_library(WEBP_LIBRARY_DEBUG NAMES webpd PATH_SUFFIXES lib)
-include(SelectLibraryConfigurations)
-select_library_configurations(WEBP)
-
-include(FindPackageHandleStandardArgs)
-FIND_PACKAGE_HANDLE_STANDARD_ARGS(WEBP DEFAULT_MSG WEBP_INCLUDE_DIRS WEBP_LIBRARIES)

ports/sdl2-image/portfile.cmake

@@ -1,11 +1,3 @@
-# Common Ambient Variables:
-#   VCPKG_ROOT_DIR = <C:\path\to\current\vcpkg>
-#   TARGET_TRIPLET is the current triplet (x86-windows, etc)
-#   PORT is the current port name (zlib, etc)
-#   CURRENT_BUILDTREES_DIR = ${VCPKG_ROOT_DIR}\buildtrees\${PORT}
-#   CURRENT_PACKAGES_DIR  = ${VCPKG_ROOT_DIR}\packages\${PORT}_${TARGET_TRIPLET}
-#
-
 include(vcpkg_common_functions)
 set(SDL2_IMAGE_VERSION "2.0.2")
 set(SOURCE_PATH ${CURRENT_BUILDTREES_DIR}/src/SDL2_image-${SDL2_IMAGE_VERSION})
@@ -17,14 +9,31 @@ vcpkg_download_distfile(ARCHIVE
 vcpkg_extract_source_archive(${ARCHIVE})
 
 file(COPY ${CMAKE_CURRENT_LIST_DIR}/CMakeLists.txt DESTINATION ${SOURCE_PATH})
-file(COPY ${CMAKE_CURRENT_LIST_DIR}/FindWEBP.cmake DESTINATION ${SOURCE_PATH}/cmake)
+
+set(USE_JPEG OFF)
+if("libjpeg-turbo" IN_LIST FEATURES)
+    set(USE_JPEG ON)
+endif()
+
+set(USE_TIFF OFF)
+if("tiff" IN_LIST FEATURES)
+    set(USE_TIFF ON)
+endif()
+
+set(USE_WEBP OFF)
+if("libwebp" IN_LIST FEATURES)
+    set(USE_WEBP ON)
+endif()
 
 vcpkg_configure_cmake(
     SOURCE_PATH ${SOURCE_PATH}
     PREFER_NINJA
-    # OPTIONS
-    # OPTIONS_RELEASE -DOPTIMIZE=1
-    # OPTIONS_DEBUG -DDEBUGGABLE=1
+    OPTIONS
+        "-DCURRENT_INSTALLED_DIR=${CURRENT_INSTALLED_DIR}"
+        -DUSE_PNG=ON
+        -DUSE_JPEG=${USE_JPEG}
+        -DUSE_TIFF=${USE_TIFF}
+        -DUSE_WEBP=${USE_WEBP}
 )
 
 vcpkg_install_cmake()