vcpkg/ports/openimageio/fix-dependencies.patch

diff --git a/src/cmake/Config.cmake.in b/src/cmake/Config.cmake.in
index 740da06..a34d4c9 100644
--- a/src/cmake/Config.cmake.in
+++ b/src/cmake/Config.cmake.in
@@ -11,6 +11,9 @@ elseif (@OpenEXR_VERSION@ VERSION_GREATER_EQUAL 2.4 AND @FOUND_OPENEXR_WITH_CONF
                     HINTS @IlmBase_DIR@ @OpenEXR_DIR@)
     find_dependency(OpenEXR @OpenEXR_VERSION@
                     HINTS @OpenEXR_DIR@)
+    find_dependency(libpng CONFIG REQUIRED)
+    find_dependency(libheif CONFIG REQUIRED)
+    find_dependency(unofficial-libsquish CONFIG REQUIRED)
     find_dependency(ZLIB @ZLIB_VERSION@)  # Because OpenEXR doesn't do it
     find_dependency(Threads)  # Because OpenEXR doesn't do it
 endif ()
diff --git a/src/cmake/externalpackages.cmake b/src/cmake/externalpackages.cmake
index 957abe3..2c093dd 100644
--- a/src/cmake/externalpackages.cmake
+++ b/src/cmake/externalpackages.cmake
@@ -148,7 +148,7 @@ find_python()
 # Dependencies for optional formats and features. If these are not found,
 # we will continue building, but the related functionality will be disabled.
 
-checked_find_package (PNG)
+checked_find_package (png PREFER_CONFIG)
 
 checked_find_package (BZip2)   # Used by ffmpeg and freetype
 if (NOT BZIP2_FOUND)
@@ -158,8 +158,6 @@ endif ()
 checked_find_package (Freetype
                    DEFINITIONS  -DUSE_FREETYPE=1 )
 
-checked_find_package (HDF5
-                   ISDEPOF      Field3D)
 checked_find_package (OpenColorIO
                       DEFINITIONS  -DUSE_OCIO=1 -DUSE_OPENCOLORIO=1
                       # PREFER_CONFIG
@@ -176,15 +174,15 @@ checked_find_package (TBB 2017
 checked_find_package (DCMTK VERSION_MIN 3.6.1)  # For DICOM images
 checked_find_package (FFmpeg VERSION_MIN 3.0)
 checked_find_package (Field3D
-                   DEPS         HDF5
-                   DEFINITIONS  -DUSE_FIELD3D=1)
+                      DEFINITIONS  -DUSE_FIELD3D=1)
 checked_find_package (GIF
                       VERSION_MIN 4
                       RECOMMEND_MIN 5.0
                       RECOMMEND_MIN_REASON "for stability and thread safety")
 
 # For HEIF/HEIC/AVIF formats
-checked_find_package (Libheif VERSION_MIN 1.3
+checked_find_package (libheif VERSION_MIN 1.3
+                      PREFER_CONFIG
                       RECOMMEND_MIN 1.7
                       RECOMMEND_MIN_REASON "for AVIF support")
 if (APPLE AND LIBHEIF_VERSION VERSION_GREATER_EQUAL 1.10 AND LIBHEIF_VERSION VERSION_LESS 1.11)
@@ -291,7 +289,8 @@ endmacro()
 option (USE_EMBEDDED_LIBSQUISH
         "Force use of embedded Libsquish, even if external is found" OFF)
 if (NOT USE_EMBEDDED_LIBSQUISH)
-    checked_find_package (Libsquish)
+    checked_find_package (unofficial-libsquish PREFER_CONFIG)
+    set(Libsquish_FOUND 1)
 endif ()
 
 
diff --git a/src/dds.imageio/CMakeLists.txt b/src/dds.imageio/CMakeLists.txt
index d693453..9bef055 100644
--- a/src/dds.imageio/CMakeLists.txt
+++ b/src/dds.imageio/CMakeLists.txt
@@ -5,7 +5,7 @@
 if (Libsquish_FOUND)
     # External libsquish was found -- use it
     add_oiio_plugin (ddsinput.cpp
-                     LINK_LIBRARIES Libsquish::Libsquish
+                     LINK_LIBRARIES unofficial::libsquish::squish
                      )
 else ()
     # No external libsquish was found -- use the embedded version.
diff --git a/src/field3d.imageio/CMakeLists.txt b/src/field3d.imageio/CMakeLists.txt
index a9e54e3..cc73ac4 100644
--- a/src/field3d.imageio/CMakeLists.txt
+++ b/src/field3d.imageio/CMakeLists.txt
@@ -9,7 +9,7 @@ if (Field3D_FOUND)
     endif ()
     add_oiio_plugin (field3dinput.cpp field3doutput.cpp
                      INCLUDE_DIRS ${FIELD3D_INCLUDES}
-                     LINK_LIBRARIES Field3D::Field3D
+                     LINK_LIBRARIES ${FIELD3D_LIBRARIES}
                                     # ${HDF5_LIBRARIES}
                                     ${SZIP_LIBRARY})
 endif()
diff --git a/src/heif.imageio/CMakeLists.txt b/src/heif.imageio/CMakeLists.txt
index fed8001..15e87ae 100644
--- a/src/heif.imageio/CMakeLists.txt
+++ b/src/heif.imageio/CMakeLists.txt
@@ -2,9 +2,9 @@
 # SPDX-License-Identifier: BSD-3-Clause
 # https://github.com/OpenImageIO/oiio/blob/master/LICENSE.md
 
-if (Libheif_FOUND)
+if (libheif_FOUND)
     add_oiio_plugin (heifinput.cpp heifoutput.cpp
-                     LINK_LIBRARIES Libheif::Libheif
+                     LINK_LIBRARIES heif
                      DEFINITIONS "-DUSE_HEIF=1")
 else ()
     message (WARNING "heif plugin will not be built")
diff --git a/src/ico.imageio/CMakeLists.txt b/src/ico.imageio/CMakeLists.txt
index 9ba76ac..13db4ac 100644
--- a/src/ico.imageio/CMakeLists.txt
+++ b/src/ico.imageio/CMakeLists.txt
@@ -2,9 +2,15 @@
 # SPDX-License-Identifier: BSD-3-Clause
 # https://github.com/OpenImageIO/oiio/blob/master/LICENSE.md
 
-if (TARGET PNG::PNG)
+if (libpng_FOUND)
+    if (TARGET png_static)
+        set(PNG_TARGET png_static)
+    elseif (TARGET png)
+        set(PNG_TARGET png)
+    endif()
+
     add_oiio_plugin (icoinput.cpp icooutput.cpp
-                     LINK_LIBRARIES PNG::PNG ZLIB::ZLIB)
+                     LINK_LIBRARIES ${PNG_TARGET} ZLIB::ZLIB)
 else ()
     message (WARNING "libpng not found, so ICO support will not work")
     set (format_plugin_definitions ${format_plugin_definitions} DISABLE_ICO=1 PARENT_SCOPE)
diff --git a/src/openvdb.imageio/CMakeLists.txt b/src/openvdb.imageio/CMakeLists.txt
index 57a0f62..3a07c31 100644
--- a/src/openvdb.imageio/CMakeLists.txt
+++ b/src/openvdb.imageio/CMakeLists.txt
@@ -4,6 +4,6 @@
 
 if (OpenVDB_FOUND)
     add_oiio_plugin (openvdbinput.cpp
-                     INCLUDE_DIRS ${TBB_INCLUDE_DIRS}
-                     LINK_LIBRARIES OpenVDB::OpenVDB ${TBB_tbb_LIBRARY} ${BOOST_LIBRARIES})
+                     INCLUDE_DIRS ${OPENVDB_INCLUDES} ${TBB_INCLUDE_DIRS}
+                     LINK_LIBRARIES ${OPENVDB_LIBRARIES} ${TBB_tbb_LIBRARY} ${BOOST_LIBRARIES})
 endif()
diff --git a/src/webp.imageio/CMakeLists.txt b/src/webp.imageio/CMakeLists.txt
index 44462c4..e1cb068 100644
--- a/src/webp.imageio/CMakeLists.txt
+++ b/src/webp.imageio/CMakeLists.txt
@@ -4,7 +4,8 @@
 
 if (WebP_FOUND)
     add_oiio_plugin (webpinput.cpp webpoutput.cpp
-                     LINK_LIBRARIES WebP::WebP WebP::WebPDemux
+                     INCLUDE_DIRS ${WEBP_INCLUDES}
+                     LINK_LIBRARIES ${WEBP_LIBRARIES}
                      DEFINITIONS "-DUSE_WEBP=1")
 else ()
     message (STATUS "WebP plugin will not be built")