CMake: Find OpenEXR, support it in pnmimagetypes

cmake/modules/FindOpenEXR.cmake

@@ -0,0 +1,90 @@
+# 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
+#
+
+if(NOT OPENEXR_INCLUDE_DIR)
+  find_path(OPENEXR_INCLUDE_DIR
+    "ImfVersion.h"
+    PATH_SUFFIXES "OpenEXR")
+
+  mark_as_advanced(OPENEXR_INCLUDE_DIR)
+endif()
+
+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

@@ -149,6 +149,11 @@ find_package(TIFF QUIET)
 package_option(TIFF "Enable support for loading .tif images.")
 config_package(TIFF "libtiff")
 
+# OpenEXR:
+find_package(OpenEXR QUIET)
+package_option(OPENEXR "Enable support for loading .exr images.")
+config_package(OPENEXR "OpenEXR")
+
 #
 # ------------ LIBTAR ------------
 #

dtool/dtool_config.h.in

@@ -67,6 +67,9 @@
 /* Define if we have libtiff installed.  */
 #cmakedefine HAVE_TIFF
 
+/* Define if we have OpenEXR installed.  */
+#cmakedefine HAVE_OPENEXR
+
 /* Define if we want to build these other image file formats. */
 #cmakedefine HAVE_SGI_RGB
 #cmakedefine HAVE_TGA

panda/src/pnmimagetypes/CMakeLists.txt

@@ -33,7 +33,8 @@ set(P3PNMIMAGETYPES_SOURCES
 composite_sources(p3pnmimagetypes P3PNMIMAGETYPES_SOURCES)
 add_component_library(p3pnmimagetypes SYMBOL BUILDING_PANDA_PNMIMAGETYPES
   ${P3PNMIMAGETYPES_HEADERS} ${P3PNMIMAGETYPES_SOURCES})
-target_link_libraries(p3pnmimagetypes p3pnmimage PKG::JPEG PKG::TIFF PKG::PNG)
+target_link_libraries(p3pnmimagetypes p3pnmimage
+  PKG::JPEG PKG::TIFF PKG::PNG PKG::OPENEXR)
 set_target_properties(p3pnmimagetypes PROPERTIES CXX_EXCEPTIONS ON)
 
 if(NOT BUILD_METALIBS)