Description: Update FindOpenEXR from blender. This version properly handles OpenEXR3 https://developer.blender.org/diffusion/B/browse/master/build_files/cmake/Modules/FindOpenEXR.cmake Author: Andreas Metzler Bug-Debian: https://bugs.debian.org/1023997 Origin: vendor Forwarded: https://sourceforge.net/p/pfstools/bugs/54/ Last-Update: 2022-11-15 --- a/cmake/FindOpenEXR.cmake +++ b/cmake/FindOpenEXR.cmake @@ -1,5 +1,8 @@ +# SPDX-License-Identifier: BSD-3-Clause +# Copyright 2011 Blender Foundation. + # - Find OpenEXR library # Find the native OpenEXR includes and library # This module defines # OPENEXR_INCLUDE_DIRS, where to find ImfXdr.h, etc. Set when # OPENEXR_INCLUDE_DIR is found. @@ -16,108 +19,191 @@ # OPENEXR_IMATH_LIBRARY, Path to Imath library # # also defined, but not for general use are # OPENEXR_LIBRARY, where to find the OpenEXR library. -#============================================================================= -# Copyright 2011 Blender Foundation. -# -# Distributed under the OSI-approved BSD License (the "License"); -# see accompanying file Copyright.txt for details. -# -# This software is distributed WITHOUT ANY WARRANTY; without even the -# implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. -# See the License for more information. -#============================================================================= - # If OPENEXR_ROOT_DIR was defined in the environment, use it. IF(NOT OPENEXR_ROOT_DIR AND NOT $ENV{OPENEXR_ROOT_DIR} STREQUAL "") SET(OPENEXR_ROOT_DIR $ENV{OPENEXR_ROOT_DIR}) ENDIF() -SET(_openexr_FIND_COMPONENTS - Half - Iex - IlmImf - IlmThread - Imath -) - +# Old versions (before 2.0?) do not have any version string, +# just assuming this should be fine though. +SET(_openexr_libs_ver_init "2.0") SET(_openexr_SEARCH_DIRS ${OPENEXR_ROOT_DIR} - /usr/local - /sw # Fink - /opt/local # DarwinPorts - /opt/csw # Blastwave - "C:/Program Files (x86)/OpenEXR" # Windows + /opt/lib/openexr ) FIND_PATH(OPENEXR_INCLUDE_DIR NAMES - ImfXdr.h + OpenEXR/ImfXdr.h HINTS ${_openexr_SEARCH_DIRS} PATH_SUFFIXES - include/OpenEXR include + include ) -#message( "Include dir: ${OPENEXR_INCLUDE_DIR}" ) +# If the headers were found, get the version from config file, if not already set. +IF(OPENEXR_INCLUDE_DIR) + IF(NOT OPENEXR_VERSION) + + FIND_FILE(_openexr_CONFIG + NAMES + OpenEXRConfig.h + PATHS + "${OPENEXR_INCLUDE_DIR}" + "${OPENEXR_INCLUDE_DIR}/OpenEXR" + NO_DEFAULT_PATH + ) + + IF(_openexr_CONFIG) + FILE(STRINGS "${_openexr_CONFIG}" OPENEXR_BUILD_SPECIFICATION + REGEX "^[ \t]*#define[ \t]+OPENEXR_VERSION_STRING[ \t]+\"[.0-9]+\".*$") + ELSE() + MESSAGE(WARNING "Could not find \"OpenEXRConfig.h\" in \"${OPENEXR_INCLUDE_DIR}\"") + ENDIF() + + IF(OPENEXR_BUILD_SPECIFICATION) + MESSAGE(STATUS "${OPENEXR_BUILD_SPECIFICATION}") + STRING(REGEX REPLACE ".*#define[ \t]+OPENEXR_VERSION_STRING[ \t]+\"([.0-9]+)\".*" + "\\1" _openexr_libs_ver_init ${OPENEXR_BUILD_SPECIFICATION}) + ELSE() + MESSAGE(WARNING "Could not determine ILMBase library version, assuming ${_openexr_libs_ver_init}.") + ENDIF() + + UNSET(_openexr_CONFIG CACHE) + + ENDIF() +ENDIF() + +SET("OPENEXR_VERSION" ${_openexr_libs_ver_init} CACHE STRING "Version of OpenEXR lib") +UNSET(_openexr_libs_ver_init) + +STRING(REGEX REPLACE "([0-9]+)[.]([0-9]+).*" "\\1_\\2" _openexr_libs_ver ${OPENEXR_VERSION}) + +# Different library names in 3.0, and Imath and Half moved out. +IF(OPENEXR_VERSION VERSION_GREATER_EQUAL "3.0.0") + SET(_openexr_FIND_COMPONENTS + Iex + OpenEXR + OpenEXRCore + IlmThread + ) +ELSE() + SET(_openexr_FIND_COMPONENTS + Half + Iex + IlmImf + IlmThread + Imath + ) +ENDIF() SET(_openexr_LIBRARIES) FOREACH(COMPONENT ${_openexr_FIND_COMPONENTS}) STRING(TOUPPER ${COMPONENT} UPPERCOMPONENT) FIND_LIBRARY(OPENEXR_${UPPERCOMPONENT}_LIBRARY NAMES - ${COMPONENT}-2_2 ${COMPONENT}-2.2 ${COMPONENT}-2.1 ${COMPONENT}-2_1 ${COMPONENT} # The newest version first + ${COMPONENT}-${_openexr_libs_ver} ${COMPONENT} + NAMES_PER_DIR HINTS ${_openexr_SEARCH_DIRS} PATH_SUFFIXES lib64 lib ) + LIST(APPEND _openexr_LIBRARIES "${OPENEXR_${UPPERCOMPONENT}_LIBRARY}") +ENDFOREACH() -# message( "Lib: ${OPENEXR_${UPPERCOMPONENT}_LIBRARY}" ) +UNSET(_openexr_libs_ver) -# IF( NOT "${OPENEXR_${UPPERCOMPONENT}_LIBRARY}" ) -# message( "Library ${COMPONENT} not found" ) -# SET( OPENEXR_FOUND "" ) -# break() -# ENDIF() - - LIST(APPEND _openexr_LIBRARIES OPENEXR_${UPPERCOMPONENT}_LIBRARY) - -ENDFOREACH() +IF(OPENEXR_VERSION VERSION_GREATER_EQUAL "3.0.0") + # For OpenEXR 3.x, we also need to find the now separate Imath library. + # For simplicity we add it to the OpenEXR includes and libraries, as we + # have no direct dependency on Imath and it's simpler to support both + # 2.x and 3.x this way. -# OpenEXR needs zlib, which could be tricky to locate on Windows -# You may need to manually do something like this: -#SET(ZLIB_DIR "e:/zlib/") -#SET(CMAKE_INCLUDE_PATH ${ZLIB_DIR}/include ${CMAKE_INCLUDE_PATH}) -#SET(CMAKE_LIBRARY_PATH ${ZLIB_DIR}/ ${ZLIB_DIR}/lib ${CMAKE_LIBRARY_PATH}) + # Find include directory + FIND_PATH(IMATH_INCLUDE_DIR + NAMES + Imath/ImathMath.h + HINTS + ${_openexr_SEARCH_DIRS} + PATH_SUFFIXES + include + ) + + # Find version + FIND_FILE(_imath_config + NAMES + ImathConfig.h + PATHS + ${IMATH_INCLUDE_DIR}/Imath + NO_DEFAULT_PATH + ) + + # Find line with version, extract string, and format for library suffix. + FILE(STRINGS "${_imath_config}" _imath_build_specification + REGEX "^[ \t]*#define[ \t]+IMATH_VERSION_STRING[ \t]+\"[.0-9]+\".*$") + STRING(REGEX REPLACE ".*#define[ \t]+IMATH_VERSION_STRING[ \t]+\"([.0-9]+)\".*" + "\\1" _imath_libs_ver ${_imath_build_specification}) + STRING(REGEX REPLACE "([0-9]+)[.]([0-9]+).*" "\\1_\\2" _imath_libs_ver ${_imath_libs_ver}) + + # Find library, with or without version number. + FIND_LIBRARY(IMATH_LIBRARY + NAMES + Imath-${_imath_libs_ver} Imath + NAMES_PER_DIR + HINTS + ${_openexr_SEARCH_DIRS} + PATH_SUFFIXES + lib64 lib + ) + LIST(APPEND _openexr_LIBRARIES "${IMATH_LIBRARY}") -FIND_PACKAGE(ZLIB REQUIRED) -LIST(APPEND _openexr_LIBRARIES ZLIB_LIBRARY) + # In cmake version 3.21 and up, we can instead use the NO_CACHE option for + # FIND_FILE so we don't need to clear it from the cache here. + UNSET(_imath_config CACHE) + UNSET(_imath_libs_ver) + UNSET(_imath_build_specification) +ENDIF() -# handle the QUIETLY and REQUIRED arguments and set OPENEXR_FOUND to TRUE if +# handle the QUIETLY and REQUIRED arguments and set OPENEXR_FOUND to TRUE if # all listed variables are TRUE INCLUDE(FindPackageHandleStandardArgs) +FIND_PACKAGE_HANDLE_STANDARD_ARGS(OpenEXR DEFAULT_MSG + _openexr_LIBRARIES OPENEXR_INCLUDE_DIR) -#FIND_PACKAGE_HANDLE_STANDARD_ARGS(OpenEXR DEFAULT_MSG -# ${_openexr_LIBRARIES} OPENEXR_INCLUDE_DIR) - -# message( "${_openexr_LIBRARIES}" ) - -# This is a work-around as passing the list does not work in cmake 2.8.11.2 (cygwin) -FIND_PACKAGE_HANDLE_STANDARD_ARGS(OpenEXR DEFAULT_MSG - OPENEXR_HALF_LIBRARY OPENEXR_IEX_LIBRARY OPENEXR_ILMIMF_LIBRARY OPENEXR_ILMTHREAD_LIBRARY OPENEXR_IMATH_LIBRARY ZLIB_LIBRARY OPENEXR_INCLUDE_DIR) - IF(OPENEXR_FOUND) - SET(OPENEXR_LIBRARIES ${OPENEXR_ILMTHREAD_LIBRARY} ${OPENEXR_IEX_LIBRARY} ${OPENEXR_ILMIMF_LIBRARY} ${OPENEXR_IMATH_LIBRARY} ${OPENEXR_HALF_LIBRARY} ${ZLIB_LIBRARY}) - # Both include paths are needed because of dummy OSL headers mixing #include and #include :( - SET(OPENEXR_INCLUDE_DIRS ${OPENEXR_INCLUDE_DIR} ${OPENEXR_INCLUDE_DIR}/OpenEXR ${ZLIB_INCLUDE_DIR}) + SET(OPENEXR_LIBRARIES ${_openexr_LIBRARIES}) + # Both include paths are needed because of dummy OSL headers mixing + # #include and #include , as well as Alembic + # include directly. + SET(OPENEXR_INCLUDE_DIRS + ${OPENEXR_INCLUDE_DIR} + ${OPENEXR_INCLUDE_DIR}/OpenEXR) + + IF(OPENEXR_VERSION VERSION_GREATER_EQUAL "3.0.0") + LIST(APPEND OPENEXR_INCLUDE_DIRS + ${IMATH_INCLUDE_DIR} + ${IMATH_INCLUDE_DIR}/Imath) + ENDIF() ENDIF() -MARK_AS_ADVANCED(OPENEXR_INCLUDE_DIR) +MARK_AS_ADVANCED( + OPENEXR_INCLUDE_DIR + OPENEXR_VERSION + IMATH_INCLUDE_DIR + IMATH_LIBRARY +) FOREACH(COMPONENT ${_openexr_FIND_COMPONENTS}) STRING(TOUPPER ${COMPONENT} UPPERCOMPONENT) MARK_AS_ADVANCED(OPENEXR_${UPPERCOMPONENT}_LIBRARY) ENDFOREACH() + +UNSET(COMPONENT) +UNSET(UPPERCOMPONENT) +UNSET(_openexr_FIND_COMPONENTS) +UNSET(_openexr_LIBRARIES) +UNSET(_openexr_SEARCH_DIRS)