[openimageio] build with libraw support (#3830)

* [openimageio] build with libraw

* patch: replace 'LibRaw_r_LIBRARIES' occurrences by 'LibRaw_LIBRARIES' since libraw port installs 'raw_r' library as 'raw' 
* activate USE_LIBRAW
* declare dependency to libraw in CONTROL file

* [openimageio] 'libraw' as Feature

* [openimageio] Use PATCHES parameter of vcpkg_from_github()

ports/openimageio/CONTROL

@@ -1,4 +1,8 @@
 Source: openimageio
-Version: Release-1.8.12
+Version: Release-1.8.12-1
 Description: A library for reading and writing images, and a bunch of related classes, utilities, and application
 Build-Depends: libjpeg-turbo, tiff, libpng, openexr, boost-thread, boost-smart-ptr, boost-foreach, boost-regex, boost-type-traits, boost-static-assert, boost-unordered, boost-config, boost-algorithm, boost-filesystem, boost-system, boost-thread, boost-asio, boost-random, robin-map
+
+Feature: libraw
+Build-Depends: libraw
+Description: Enable RAW image files support

ports/openimageio/fix_libraw.patch

@@ -0,0 +1,40 @@
+diff --git a/src/cmake/externalpackages.cmake b/src/cmake/externalpackages.cmake
+index 5eeb7d3..3e8bfcb 100644
+--- a/src/cmake/externalpackages.cmake
++++ b/src/cmake/externalpackages.cmake
+@@ -336,7 +336,7 @@ if (USE_LIBRAW)
+         message (STATUS "Looking for LibRaw with ${LIBRAW_PATH}")
+     endif ()
+     find_package (LibRaw)
+-    if (LibRaw_r_LIBRARIES AND LibRaw_INCLUDE_DIR)
++    if (LibRaw_LIBRARIES AND LibRaw_INCLUDE_DIR)
+         set (LIBRAW_FOUND TRUE)
+         include_directories (${LibRaw_INCLUDE_DIR})
+         if (NOT LibRaw_FIND_QUIETLY)
+@@ -350,7 +350,7 @@ if (USE_LIBRAW)
+     if (LINKSTATIC)
+         find_package (Jasper)
+         find_library (LCMS2_LIBRARIES NAMES lcms2)
+-        set (LibRaw_r_LIBRARIES ${LibRaw_r_LIBRARIES} ${JASPER_LIBRARIES} ${LCMS2_LIBRARIES})
++        set (LibRaw_LIBRARIES ${LibRaw_LIBRARIES} ${JASPER_LIBRARIES} ${LCMS2_LIBRARIES})
+     endif ()
+ else ()
+     message (STATUS "Not using LibRaw")
+@@ -494,4 +494,3 @@ if (USE_DICOM)
+ endif()
+ # end DCMTK setup
+ ###########################################################################
+-
+diff --git a/src/raw.imageio/CMakeLists.txt b/src/raw.imageio/CMakeLists.txt
+index e3608a2..f503035 100644
+--- a/src/raw.imageio/CMakeLists.txt
++++ b/src/raw.imageio/CMakeLists.txt
+@@ -1,7 +1,7 @@
+ if (USE_LIBRAW AND LIBRAW_FOUND)
+     add_oiio_plugin (rawinput.cpp
+                      INCLUDE_DIRS ${LibRaw_INCLUDE_DIR}
+-                     LINK_LIBRARIES ${LibRaw_r_LIBRARIES}
++                     LINK_LIBRARIES ${LibRaw_LIBRARIES}
+                      DEFINITIONS "-DUSE_LIBRAW=1")
+ else ()
+     message (WARNING "Raw plugin will not be built")

ports/openimageio/portfile.cmake

@@ -6,6 +6,10 @@ vcpkg_from_github(
     REF Release-1.8.12
     SHA512 2475792ff475d34b47b6af5ca71c6cf6d9d8c60452a506b1bf740b9dbb20ea72109117dc9a531b8302095de99f6280172723f26e23dc6e038256cbb43b697145
     HEAD_REF master
+    PATCHES
+        # fix_libraw: replace 'LibRaw_r_LIBRARIES' occurences by 'LibRaw_LIBRARIES'
+        #             since libraw port installs 'raw_r' library as 'raw'
+        ${CMAKE_CURRENT_LIST_DIR}/fix_libraw.patch
 )
 
 file(REMOVE_RECURSE "${SOURCE_PATH}/ext")
@@ -19,6 +23,12 @@ else()
     set(LINKSTATIC OFF)
 endif()
 
+# Features
+set(USE_LIBRAW OFF)
+if("libraw" IN_LIST FEATURES)
+    set(USE_LIBRAW ON)
+endif()
+
 vcpkg_configure_cmake(
     SOURCE_PATH ${SOURCE_PATH}
     PREFER_NINJA
@@ -30,7 +40,7 @@ vcpkg_configure_cmake(
         -DUSE_FIELD3D=OFF
         -DUSE_FREETYPE=OFF
         -DUSE_GIF=OFF
-        -DUSE_LIBRAW=OFF
+        -DUSE_LIBRAW=${USE_LIBRAW}
         -DUSE_NUKE=OFF
         -DUSE_OCIO=OFF
         -DUSE_OPENCV=OFF