extra-cmake-modules/find-modules/FindOpenEXR.cmake

0001 # SPDX-FileCopyrightText: 2013-2014 Alex Merry <alex.merry@kdemail.net>
0002 # SPDX-FileCopyrightText: 2006 Alexander Neundorf <neundorf@kde.org>
0003 #
0004 # SPDX-License-Identifier: BSD-3-Clause
0005
0006 #[=======================================================================[.rst:
0007 FindOpenEXR
0008 -----------
0009
0010 Try to find the OpenEXR libraries.
0011
0012 This will define the following variables:
0013
0014 ``OpenEXR_FOUND``
0015     True if OpenEXR is available
0016 ``OpenEXR_LIBRARIES``
0017     Link to these to use OpenEXR
0018 ``OpenEXR_INCLUDE_DIRS``
0019     Include directory for OpenEXR
0020 ``OpenEXR_DEFINITIONS``
0021     Compiler flags required to link against OpenEXR
0022
0023 and the following imported targets:
0024
0025 ``OpenEXR::IlmImf``
0026     The OpenEXR core library
0027
0028 In general we recommend using the imported target, as it is easier to use.
0029 Bear in mind, however, that if the target is in the link interface of an
0030 exported library, it must be made available by the package config file.
0031
0032 Since pre-1.0.0.
0033 #]=======================================================================]
0034
0035 include(${CMAKE_CURRENT_LIST_DIR}/ECMFindModuleHelpersStub.cmake)
0036
0037 ecm_find_package_version_check(OpenEXR)
0038
0039 # use pkg-config to get the directories and then use these values
0040 # in the FIND_PATH() and FIND_LIBRARY() calls
0041 find_package(PkgConfig QUIET)
0042 pkg_check_modules(PC_OpenEXR QUIET OpenEXR)
0043
0044 set(OpenEXR_DEFINITIONS ${PC_OpenEXR_CFLAGS_OTHER})
0045
0046 find_path(OpenEXR_INCLUDE_DIR ImfRgbaFile.h
0047    PATHS
0048    ${PC_OpenEXR_INCLUDEDIR}
0049    ${PC_OpenEXR_INCLUDE_DIRS}
0050    PATH_SUFFIXES OpenEXR
0051 )
0052
0053 # Required libraries for OpenEXR
0054 find_library(OpenEXR_HALF_LIBRARY NAMES Half
0055    PATHS
0056    ${PC_OpenEXR_LIBDIR}
0057    ${PC_OpenEXR_LIBRARY_DIRS}
0058 )
0059 find_library(OpenEXR_IEX_LIBRARY NAMES Iex
0060    PATHS
0061    ${PC_OpenEXR_LIBDIR}
0062    ${PC_OpenEXR_LIBRARY_DIRS}
0063 )
0064 find_library(OpenEXR_IMATH_LIBRARY NAMES Imath
0065    PATHS
0066    ${PC_OpenEXR_LIBDIR}
0067    ${PC_OpenEXR_LIBRARY_DIRS}
0068 )
0069 find_library(OpenEXR_ILMTHREAD_LIBRARY NAMES IlmThread
0070    PATHS
0071    ${PC_OpenEXR_LIBDIR}
0072    ${PC_OpenEXR_LIBRARY_DIRS}
0073 )
0074 # This is the actual OpenEXR library
0075 find_library(OpenEXR_ILMIMF_LIBRARY NAMES IlmImf
0076    PATHS
0077    ${PC_OpenEXR_LIBDIR}
0078    ${PC_OpenEXR_LIBRARY_DIRS}
0079 )
0080
0081 set(_OpenEXR_deps
0082    ${OpenEXR_HALF_LIBRARY}
0083    ${OpenEXR_IEX_LIBRARY}
0084    ${OpenEXR_IMATH_LIBRARY}
0085    ${OpenEXR_ILMTHREAD_LIBRARY})
0086
0087 set(OpenEXR_LIBRARIES
0088    ${_OpenEXR_deps}
0089    ${OpenEXR_ILMIMF_LIBRARY})
0090
0091 if (OpenEXR_INCLUDE_DIR AND EXISTS "${OpenEXR_INCLUDE_DIR}/OpenEXRConfig.h")
0092     file(STRINGS "${OpenEXR_INCLUDE_DIR}/OpenEXRConfig.h" openexr_version_str
0093          REGEX "^#define[\t ]+OPENEXR_VERSION_STRING[\t ]+\"[^\"]*\"")
0094     string(REGEX REPLACE "^#define[\t ]+OPENEXR_VERSION_STRING[\t ]+\"([^\"]*).*"
0095            "\\1" OpenEXR_VERSION_STRING "${openexr_version_str}")
0096     unset(openexr_version_str)
0097 endif ()
0098
0099 include(FindPackageHandleStandardArgs)
0100 # find_package_handle_standard_args reports the value of the first variable
0101 # on success, so make sure this is the actual OpenEXR library
0102 find_package_handle_standard_args(OpenEXR
0103    FOUND_VAR OpenEXR_FOUND
0104    REQUIRED_VARS
0105       OpenEXR_ILMIMF_LIBRARY
0106       OpenEXR_HALF_LIBRARY
0107       OpenEXR_IEX_LIBRARY
0108       OpenEXR_IMATH_LIBRARY
0109       OpenEXR_ILMTHREAD_LIBRARY
0110       OpenEXR_INCLUDE_DIR
0111    VERSION_VAR OpenEXR_VERSION_STRING)
0112
0113 set(OpenEXR_INCLUDE_DIRS ${OpenEXR_INCLUDE_DIR})
0114
0115 include(FeatureSummary)
0116 set_package_properties(OpenEXR PROPERTIES
0117    URL https://www.openexr.com/
0118    DESCRIPTION "A library for handling OpenEXR high dynamic-range image files")
0119
0120 mark_as_advanced(
0121    OpenEXR_INCLUDE_DIR
0122    OpenEXR_LIBRARIES
0123    OpenEXR_DEFINITIONS
0124    OpenEXR_ILMIMF_LIBRARY
0125    OpenEXR_ILMTHREAD_LIBRARY
0126    OpenEXR_IMATH_LIBRARY
0127    OpenEXR_IEX_LIBRARY
0128    OpenEXR_HALF_LIBRARY
0129 )
0130
0131 if(OpenEXR_FOUND AND NOT TARGET OpenEXR::IlmImf)
0132     add_library(OpenEXR::IlmImf UNKNOWN IMPORTED)
0133     set_target_properties(OpenEXR::IlmImf PROPERTIES
0134         IMPORTED_LOCATION "${OpenEXR_ILMIMF_LIBRARY}"
0135         INTERFACE_COMPILE_OPTIONS "${OpenEXR_DEFINITIONS}"
0136         INTERFACE_INCLUDE_DIRECTORIES "${OpenEXR_INCLUDE_DIR}"
0137         INTERFACE_LINK_LIBRARIES "${_OpenEXR_deps}"
0138     )
0139 endif()