cmake: use improved FindOpenEXR module
This commit is contained in:
itsmattkc
+143
-87
@@ -1,99 +1,155 @@
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# Module to find OpenEXR.
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#
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# Copyright 2016 Pixar
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# This module will set
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# OPENEXR_FOUND true, if found
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# OPENEXR_INCLUDES directory where headers are found
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# OPENEXR_LIBRARIES libraries for OpenEXR + IlmBase
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# ILMBASE_LIBRARIES libraries just IlmBase
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# OPENEXR_VERSION OpenEXR version (accurate for >= 2.0.0,
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# otherwise will just guess 1.6.1)
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#
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# Licensed under the Apache License, Version 2.0 (the "Apache License")
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# with the following modification; you may not use this file except in
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# compliance with the Apache License and the following modification to it:
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# Section 6. Trademarks. is deleted and replaced with:
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#
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# 6. Trademarks. This License does not grant permission to use the trade
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# names, trademarks, service marks, or product names of the Licensor
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# and its affiliates, except as required to comply with Section 4(c) of
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# the License and to reproduce the content of the NOTICE file.
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#
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# You may obtain a copy of the Apache License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the Apache License with the above modification is
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# distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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# KIND, either express or implied. See the Apache License for the specific
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# language governing permissions and limitations under the Apache License.
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#
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find_path(OPENEXR_INCLUDE_DIR
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OpenEXR/half.h
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HINTS
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"${OPENEXR_LOCATION}"
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"$ENV{OPENEXR_LOCATION}"
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PATH_SUFFIXES
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include/
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DOC
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"OpenEXR headers path"
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)
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# Other standard issue macros
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include (FindPackageHandleStandardArgs)
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include (SelectLibraryConfigurations)
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if(OPENEXR_INCLUDE_DIR)
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set(openexr_config_file "${OPENEXR_INCLUDE_DIR}/OpenEXR/OpenEXRConfig.h")
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if(EXISTS ${openexr_config_file})
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file(STRINGS
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${openexr_config_file}
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TMP
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REGEX "#define OPENEXR_VERSION_STRING.*$")
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string(REGEX MATCHALL "[0-9.]+" OPENEXR_VERSION "${TMP}")
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find_package (ZLIB REQUIRED)
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file(STRINGS
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${openexr_config_file}
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TMP
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REGEX "#define OPENEXR_VERSION_MAJOR.*$")
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string(REGEX MATCHALL "[0-9]" OPENEXR_MAJOR_VERSION "${TMP}")
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# Link with pthreads if required
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find_package (Threads)
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if (CMAKE_USE_PTHREADS_INIT)
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set (ILMBASE_PTHREADS ${CMAKE_THREAD_LIBS_INIT})
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endif ()
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file(STRINGS
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${openexr_config_file}
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TMP
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REGEX "#define OPENEXR_VERSION_MINOR.*$")
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string(REGEX MATCHALL "[0-9]" OPENEXR_MINOR_VERSION "${TMP}")
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endif()
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endif()
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# Attempt to find OpenEXR with pkgconfig
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find_package(PkgConfig)
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if (PKG_CONFIG_FOUND)
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if (NOT Ilmbase_ROOT AND NOT ILMBASE_ROOT
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AND NOT DEFINED ENV{Ilmbase_ROOT} AND NOT DEFINED ENV{ILMBASE_ROOT})
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pkg_check_modules(_ILMBASE QUIET IlmBase>=2.0.0)
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endif ()
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if (NOT OpenEXR_ROOT AND NOT OPENEXR_ROOT
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AND NOT DEFINED ENV{OpenEXR_ROOT} AND NOT DEFINED ENV{OPENEXR_ROOT})
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pkg_check_modules(_OPENEXR QUIET OpenEXR>=2.0.0)
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endif ()
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endif (PKG_CONFIG_FOUND)
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foreach(OPENEXR_LIB
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Half
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Iex
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Imath
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IlmImf
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IlmThread
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# List of likely places to find the headers -- note priority override of
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# ${OPENEXR_ROOT}/include.
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# ILMBASE is needed in case ilmbase an openexr are installed in separate
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# directories, like NixOS does
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set (GENERIC_INCLUDE_PATHS
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${OPENEXR_ROOT}/include
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$ENV{OPENEXR_ROOT}/include
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${ILMBASE_ROOT}/include
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$ENV{ILMBASE_ROOT}/include
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${_ILMBASE_INCLUDEDIR}
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${_OPENEXR_INCLUDEDIR}
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/usr/local/include
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/usr/include
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/usr/include/${CMAKE_LIBRARY_ARCHITECTURE}
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/sw/include
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/opt/local/include )
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# Find the include file locations.
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find_path (ILMBASE_INCLUDE_PATH OpenEXR/IlmBaseConfig.h
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HINTS ${ILMBASE_INCLUDE_DIR} ${OPENEXR_INCLUDE_DIR}
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${GENERIC_INCLUDE_PATHS} )
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find_path (OPENEXR_INCLUDE_PATH OpenEXR/OpenEXRConfig.h
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HINTS ${OPENEXR_INCLUDE_DIR}
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${GENERIC_INCLUDE_PATHS} )
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# Try to figure out version number
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if (DEFINED _OPENEXR_VERSION AND NOT "${_OPENEXR_VERSION}" STREQUAL "")
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set (OPENEXR_VERSION "${_OPENEXR_VERSION}")
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string (REGEX REPLACE "([0-9]+)\\.[0-9\\.]+" "\\1" OPENEXR_VERSION_MAJOR "${_OPENEXR_VERSION}")
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string (REGEX REPLACE "[0-9]+\\.([0-9]+)(\\.[0-9]+)?" "\\1" OPENEXR_VERSION_MINOR "${_OPENEXR_VERSION}")
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elseif (EXISTS "${OPENEXR_INCLUDE_PATH}/OpenEXR/ImfMultiPartInputFile.h")
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# Must be at least 2.0
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file(STRINGS "${OPENEXR_INCLUDE_PATH}/OpenEXR/OpenEXRConfig.h" TMP REGEX "^#define OPENEXR_VERSION_STRING .*$")
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string (REGEX MATCHALL "[0-9]+[.0-9]+" OPENEXR_VERSION ${TMP})
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file(STRINGS "${OPENEXR_INCLUDE_PATH}/OpenEXR/OpenEXRConfig.h" TMP REGEX "^#define OPENEXR_VERSION_MAJOR .*$")
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string (REGEX MATCHALL "[0-9]+" OPENEXR_VERSION_MAJOR ${TMP})
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file(STRINGS "${OPENEXR_INCLUDE_PATH}/OpenEXR/OpenEXRConfig.h" TMP REGEX "^#define OPENEXR_VERSION_MINOR .*$")
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string (REGEX MATCHALL "[0-9]+" OPENEXR_VERSION_MINOR ${TMP})
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else ()
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# Assume an old one, predates 2.x that had versions
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set (OPENEXR_VERSION 1.6.1)
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set (OPENEXR_MAJOR 1)
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set (OPENEXR_MINOR 6)
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endif ()
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# List of likely places to find the libraries -- note priority override of
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# ${OPENEXR_ROOT}/lib.
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set (GENERIC_LIBRARY_PATHS
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${OPENEXR_ROOT}/lib
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${ILMBASE_ROOT}/lib
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${OPENEXR_INCLUDE_PATH}/../lib
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${ILMBASE_INCLUDE_PATH}/../lib
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${_ILMBASE_LIBDIR}
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${_OPENEXR_LIBDIR}
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/usr/local/lib
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/usr/local/lib/${CMAKE_LIBRARY_ARCHITECTURE}
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/usr/lib
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/usr/lib/${CMAKE_LIBRARY_ARCHITECTURE}
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/sw/lib
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/opt/local/lib
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$ENV{PROGRAM_FILES}/OpenEXR/lib/static )
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# message (STATUS "Generic lib paths: ${GENERIC_LIBRARY_PATHS}")
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# Handle request for static libs by altering CMAKE_FIND_LIBRARY_SUFFIXES.
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# We will restore it at the end of this file.
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set (_openexr_orig_suffixes ${CMAKE_FIND_LIBRARY_SUFFIXES})
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if (OpenEXR_USE_STATIC_LIBS)
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if (WIN32)
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set (CMAKE_FIND_LIBRARY_SUFFIXES .lib .a ${CMAKE_FIND_LIBRARY_SUFFIXES})
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else ()
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set (CMAKE_FIND_LIBRARY_SUFFIXES .a)
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endif ()
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endif ()
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# Look for the libraries themselves, for all the components.
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# This is complicated because the OpenEXR libraries may or may not be
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# built with version numbers embedded.
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set (_openexr_components IlmThread IlmImf Imath Iex Half)
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foreach (COMPONENT ${_openexr_components})
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string (TOUPPER ${COMPONENT} UPPERCOMPONENT)
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# First try with the version embedded
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find_library (OPENEXR_${UPPERCOMPONENT}_LIBRARY
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NAMES ${COMPONENT}-${OPENEXR_VERSION_MAJOR}_${OPENEXR_VERSION_MINOR}
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${COMPONENT}
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${COMPONENT}-${OPENEXR_VERSION_MAJOR}_${OPENEXR_VERSION_MINOR}_d
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${COMPONENT}_d
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HINTS ${OPENEXR_LIBRARY_DIR} $ENV{OPENEXR_LIBRARY_DIR}
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${GENERIC_LIBRARY_PATHS} )
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endforeach ()
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find_package_handle_standard_args (OpenEXR
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REQUIRED_VARS ILMBASE_INCLUDE_PATH OPENEXR_INCLUDE_PATH
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OPENEXR_IMATH_LIBRARY OPENEXR_ILMIMF_LIBRARY
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OPENEXR_IEX_LIBRARY OPENEXR_HALF_LIBRARY
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VERSION_VAR OPENEXR_VERSION
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)
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# OpenEXR libraries may be suffixed with the version number, so we search
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# using both versioned and unversioned names.
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find_library(OPENEXR_${OPENEXR_LIB}_LIBRARY
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NAMES
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${OPENEXR_LIB}-${OPENEXR_MAJOR_VERSION}_${OPENEXR_MINOR_VERSION}
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${OPENEXR_LIB}
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HINTS
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"${OPENEXR_LOCATION}"
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"$ENV{OPENEXR_LOCATION}"
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PATH_SUFFIXES
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lib/
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DOC
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"OPENEXR's ${OPENEXR_LIB} library path"
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)
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if (OPENEXR_FOUND)
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set (ILMBASE_FOUND TRUE)
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set (ILMBASE_INCLUDES ${ILMBASE_INCLUDE_PATH})
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set (OPENEXR_INCLUDES ${OPENEXR_INCLUDE_PATH})
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set (ILMBASE_INCLUDE_DIR ${ILMBASE_INCLUDE_PATH})
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set (OPENEXR_INCLUDE_DIR ${OPENEXR_INCLUDE_PATH})
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set (ILMBASE_LIBRARIES ${OPENEXR_IMATH_LIBRARY} ${OPENEXR_IEX_LIBRARY} ${OPENEXR_HALF_LIBRARY} ${OPENEXR_ILMTHREAD_LIBRARY} ${ILMBASE_PTHREADS} CACHE STRING "The libraries needed to use IlmBase")
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set (OPENEXR_LIBRARIES ${OPENEXR_ILMIMF_LIBRARY} ${ILMBASE_LIBRARIES} ${ZLIB_LIBRARIES} CACHE STRING "The libraries needed to use OpenEXR")
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endif ()
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if(OPENEXR_${OPENEXR_LIB}_LIBRARY)
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list(APPEND OPENEXR_LIBRARIES ${OPENEXR_${OPENEXR_LIB}_LIBRARY})
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endif()
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endforeach(OPENEXR_LIB)
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# So #include <half.h> works
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list(APPEND OPENEXR_INCLUDE_DIRS ${OPENEXR_INCLUDE_DIR})
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list(APPEND OPENEXR_INCLUDE_DIRS ${OPENEXR_INCLUDE_DIR}/OpenEXR)
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include(FindPackageHandleStandardArgs)
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find_package_handle_standard_args(OpenEXR
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REQUIRED_VARS
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OPENEXR_INCLUDE_DIRS
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OPENEXR_LIBRARIES
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VERSION_VAR
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OPENEXR_VERSION
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)
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mark_as_advanced(
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OPENEXR_ILMIMF_LIBRARY
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OPENEXR_IMATH_LIBRARY
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OPENEXR_IEX_LIBRARY
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OPENEXR_HALF_LIBRARY
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OPENEXR_VERSION)
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# Restore the original CMAKE_FIND_LIBRARY_SUFFIXES
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set (CMAKE_FIND_LIBRARY_SUFFIXES ${_openexr_orig_suffixes})
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