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# Module to find OpenEXR.
#
# This module will set
# OPENEXR_FOUND true, if found
# OPENEXR_INCLUDES directory where headers are found
# OPENEXR_LIBRARIES libraries for OpenEXR + IlmBase
# ILMBASE_LIBRARIES libraries just IlmBase
# OPENEXR_VERSION OpenEXR version (accurate for >= 2.0.0,
# otherwise will just guess 1.6.1)
#
#
# Other standard issue macros
include (FindPackageHandleStandardArgs)
include (SelectLibraryConfigurations)
find_package (ZLIB REQUIRED)
# Link with pthreads if required
find_package (Threads)
if (CMAKE_USE_PTHREADS_INIT)
set (ILMBASE_PTHREADS ${CMAKE_THREAD_LIBS_INIT})
endif ()
# Attempt to find OpenEXR with pkgconfig
find_package(PkgConfig)
if (PKG_CONFIG_FOUND)
if (NOT Ilmbase_ROOT AND NOT ILMBASE_ROOT
AND NOT DEFINED ENV{Ilmbase_ROOT} AND NOT DEFINED ENV{ILMBASE_ROOT})
pkg_check_modules(_ILMBASE QUIET IlmBase>=2.0.0)
endif ()
if (NOT OpenEXR_ROOT AND NOT OPENEXR_ROOT
AND NOT DEFINED ENV{OpenEXR_ROOT} AND NOT DEFINED ENV{OPENEXR_ROOT})
pkg_check_modules(_OPENEXR QUIET OpenEXR>=2.0.0)
endif ()
endif (PKG_CONFIG_FOUND)
# List of likely places to find the headers -- note priority override of
# ${OPENEXR_ROOT}/include.
# ILMBASE is needed in case ilmbase an openexr are installed in separate
# directories, like NixOS does
set (GENERIC_INCLUDE_PATHS
${OPENEXR_ROOT}/include
$ENV{OPENEXR_ROOT}/include
${ILMBASE_ROOT}/include
$ENV{ILMBASE_ROOT}/include
${_ILMBASE_INCLUDEDIR}
${_OPENEXR_INCLUDEDIR}
/usr/local/include
/usr/include
/usr/include/${CMAKE_LIBRARY_ARCHITECTURE}
/sw/include
/opt/local/include )
# Find the include file locations.
find_path (ILMBASE_INCLUDE_PATH OpenEXR/IlmBaseConfig.h
HINTS ${ILMBASE_INCLUDE_DIR} ${OPENEXR_INCLUDE_DIR}
${GENERIC_INCLUDE_PATHS} )
find_path (OPENEXR_INCLUDE_PATH OpenEXR/OpenEXRConfig.h
HINTS ${OPENEXR_INCLUDE_DIR}
${GENERIC_INCLUDE_PATHS} )
# Try to figure out version number
if (DEFINED _OPENEXR_VERSION AND NOT "${_OPENEXR_VERSION}" STREQUAL "")
set (OPENEXR_VERSION "${_OPENEXR_VERSION}")
string (REGEX REPLACE "([0-9]+)\\.[0-9\\.]+" "\\1" OPENEXR_VERSION_MAJOR "${_OPENEXR_VERSION}")
string (REGEX REPLACE "[0-9]+\\.([0-9]+)(\\.[0-9]+)?" "\\1" OPENEXR_VERSION_MINOR "${_OPENEXR_VERSION}")
elseif (EXISTS "${OPENEXR_INCLUDE_PATH}/OpenEXR/ImfMultiPartInputFile.h")
# Must be at least 2.0
file(STRINGS "${OPENEXR_INCLUDE_PATH}/OpenEXR/OpenEXRConfig.h" TMP REGEX "^#define OPENEXR_VERSION_STRING .*$")
string (REGEX MATCHALL "[0-9]+[.0-9]+" OPENEXR_VERSION ${TMP})
file(STRINGS "${OPENEXR_INCLUDE_PATH}/OpenEXR/OpenEXRConfig.h" TMP REGEX "^#define OPENEXR_VERSION_MAJOR .*$")
string (REGEX MATCHALL "[0-9]+" OPENEXR_VERSION_MAJOR ${TMP})
file(STRINGS "${OPENEXR_INCLUDE_PATH}/OpenEXR/OpenEXRConfig.h" TMP REGEX "^#define OPENEXR_VERSION_MINOR .*$")
string (REGEX MATCHALL "[0-9]+" OPENEXR_VERSION_MINOR ${TMP})
else ()
# Assume an old one, predates 2.x that had versions
set (OPENEXR_VERSION 1.6.1)
set (OPENEXR_MAJOR 1)
set (OPENEXR_MINOR 6)
endif ()
# List of likely places to find the libraries -- note priority override of
# ${OPENEXR_ROOT}/lib.
set (GENERIC_LIBRARY_PATHS
${OPENEXR_ROOT}/lib
${ILMBASE_ROOT}/lib
${OPENEXR_INCLUDE_PATH}/../lib
${ILMBASE_INCLUDE_PATH}/../lib
${_ILMBASE_LIBDIR}
${_OPENEXR_LIBDIR}
/usr/local/lib
/usr/local/lib/${CMAKE_LIBRARY_ARCHITECTURE}
/usr/lib
/usr/lib/${CMAKE_LIBRARY_ARCHITECTURE}
/sw/lib
/opt/local/lib
$ENV{PROGRAM_FILES}/OpenEXR/lib/static )
# message (STATUS "Generic lib paths: ${GENERIC_LIBRARY_PATHS}")
# Handle request for static libs by altering CMAKE_FIND_LIBRARY_SUFFIXES.
# We will restore it at the end of this file.
set (_openexr_orig_suffixes ${CMAKE_FIND_LIBRARY_SUFFIXES})
if (OpenEXR_USE_STATIC_LIBS)
if (WIN32)
set (CMAKE_FIND_LIBRARY_SUFFIXES .lib .a ${CMAKE_FIND_LIBRARY_SUFFIXES})
else ()
set (CMAKE_FIND_LIBRARY_SUFFIXES .a)
endif ()
endif ()
# Look for the libraries themselves, for all the components.
# This is complicated because the OpenEXR libraries may or may not be
# built with version numbers embedded.
set (_openexr_components IlmThread IlmImf Imath Iex Half)
foreach (COMPONENT ${_openexr_components})
string (TOUPPER ${COMPONENT} UPPERCOMPONENT)
# First try with the version embedded
find_library (OPENEXR_${UPPERCOMPONENT}_LIBRARY
NAMES ${COMPONENT}-${OPENEXR_VERSION_MAJOR}_${OPENEXR_VERSION_MINOR}
${COMPONENT}
${COMPONENT}-${OPENEXR_VERSION_MAJOR}_${OPENEXR_VERSION_MINOR}_d
${COMPONENT}_d
HINTS ${OPENEXR_LIBRARY_DIR} $ENV{OPENEXR_LIBRARY_DIR}
${GENERIC_LIBRARY_PATHS} )
endforeach ()
find_package_handle_standard_args (OpenEXR
REQUIRED_VARS ILMBASE_INCLUDE_PATH OPENEXR_INCLUDE_PATH
OPENEXR_IMATH_LIBRARY OPENEXR_ILMIMF_LIBRARY
OPENEXR_IEX_LIBRARY OPENEXR_HALF_LIBRARY
VERSION_VAR OPENEXR_VERSION
)
if (OPENEXR_FOUND)
set (ILMBASE_FOUND TRUE)
set (ILMBASE_INCLUDES ${ILMBASE_INCLUDE_PATH})
set (OPENEXR_INCLUDES ${OPENEXR_INCLUDE_PATH})
set (ILMBASE_INCLUDE_DIR ${ILMBASE_INCLUDE_PATH})
set (OPENEXR_INCLUDE_DIR ${OPENEXR_INCLUDE_PATH})
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")
set (OPENEXR_LIBRARIES ${OPENEXR_ILMIMF_LIBRARY} ${ILMBASE_LIBRARIES} ${ZLIB_LIBRARIES} CACHE STRING "The libraries needed to use OpenEXR")
endif ()
mark_as_advanced(
OPENEXR_ILMIMF_LIBRARY
OPENEXR_IMATH_LIBRARY
OPENEXR_IEX_LIBRARY
OPENEXR_HALF_LIBRARY
OPENEXR_VERSION)
# Restore the original CMAKE_FIND_LIBRARY_SUFFIXES
set (CMAKE_FIND_LIBRARY_SUFFIXES ${_openexr_orig_suffixes})
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