CMake: Update OpenEXR package handling to use new targets

cmake/modules/FindOpenEXR.cmake

@@ -1,88 +0,0 @@
-# Filename: FindOpenEXR.cmake
-# Authors: CFSworks (5 Nov, 2018)
-#
-# Usage:
-#   find_package(OpenEXR [REQUIRED] [QUIET])
-#
-# Once done this will define:
-#   OPENEXR_FOUND       - system has OpenEXR
-#   OPENEXR_INCLUDE_DIR - the include directory containing OpenEXR header files
-#   OPENEXR_LIBRARIES   - the path to the OpenEXR libraries
-#
-
-find_path(OPENEXR_INCLUDE_DIR
-  "ImfVersion.h"
-  PATH_SUFFIXES "OpenEXR")
-
-mark_as_advanced(OPENEXR_INCLUDE_DIR)
-
-find_library(OPENEXR_imf_LIBRARY
-  NAMES "IlmImf")
-
-if(OPENEXR_imf_LIBRARY)
-  get_filename_component(_imf_dir "${OPENEXR_imf_LIBRARY}" DIRECTORY)
-  find_library(OPENEXR_imfutil_LIBRARY
-    NAMES "IlmImfUtil"
-    PATHS "${_imf_dir}"
-    NO_DEFAULT_PATH)
-
-  find_library(OPENEXR_ilmthread_LIBRARY
-    NAMES "IlmThread"
-    PATHS "${_imf_dir}"
-    NO_DEFAULT_PATH)
-
-  find_library(OPENEXR_iex_LIBRARY
-    NAMES "Iex"
-    PATHS "${_imf_dir}"
-    NO_DEFAULT_PATH)
-
-  find_library(OPENEXR_iexmath_LIBRARY
-    NAMES "IexMath"
-    PATHS "${_imf_dir}"
-    NO_DEFAULT_PATH)
-
-  find_library(OPENEXR_imath_LIBRARY
-    NAMES "Imath"
-    PATHS "${_imf_dir}"
-    NO_DEFAULT_PATH)
-
-  find_library(OPENEXR_half_LIBRARY
-    NAMES "Half"
-    PATHS "${_imf_dir}"
-    NO_DEFAULT_PATH)
-
-  unset(_imf_dir)
-endif()
-
-mark_as_advanced(
-  OPENEXR_imf_LIBRARY
-  OPENEXR_imfutil_LIBRARY
-  OPENEXR_ilmthread_LIBRARY
-  OPENEXR_iex_LIBRARY
-  OPENEXR_iexmath_LIBRARY
-  OPENEXR_imath_LIBRARY
-  OPENEXR_half_LIBRARY
-)
-
-set(OPENEXR_LIBRARIES
-  ${OPENEXR_imf_LIBRARY}
-  ${OPENEXR_imfutil_LIBRARY}
-  ${OPENEXR_ilmthread_LIBRARY}
-  ${OPENEXR_iex_LIBRARY}
-  ${OPENEXR_iexmath_LIBRARY}
-  ${OPENEXR_imath_LIBRARY}
-  ${OPENEXR_half_LIBRARY}
-)
-
-include(FindPackageHandleStandardArgs)
-find_package_handle_standard_args(OpenEXR DEFAULT_MSG
-  OPENEXR_INCLUDE_DIR OPENEXR_LIBRARIES
-
-  OPENEXR_imf_LIBRARY
-  OPENEXR_imfutil_LIBRARY
-  OPENEXR_ilmthread_LIBRARY
-  OPENEXR_iex_LIBRARY
-  OPENEXR_iexmath_LIBRARY
-  OPENEXR_imath_LIBRARY
-  OPENEXR_half_LIBRARY
-)

dtool/Package.cmake

@@ -377,9 +377,17 @@ package_option(TIFF "Enable support for loading .tif images.")
 package_status(TIFF "libtiff")
 
 # OpenEXR
-find_package(OpenEXR QUIET MODULE)
+find_package(OpenEXR QUIET)
 
-package_option(OpenEXR "Enable support for loading .exr images.")
+if (TARGET OpenEXR::IlmImf AND NOT TARGET OpenEXR::OpenEXR)
+  package_option(OpenEXR
+    "Enable support for loading .exr images."
+    IMPORTED_AS OpenEXR::IlmImf)
+else()
+  package_option(OpenEXR
+    "Enable support for loading .exr images."
+    IMPORTED_AS OpenEXR::OpenEXR)
+endif()
 
 package_status(OpenEXR "OpenEXR")