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# SPDX-License-Identifier: BSD-3-Clause
# Copyright 2014 Blender Foundation.
# - Find OpenShadingLanguage library
# Find the native OpenShadingLanguage includes and library
# This module defines
# OSL_INCLUDE_DIRS, where to find OSL headers, Set when
# OSL_INCLUDE_DIR is found.
# OSL_LIBRARIES, libraries to link against to use OSL.
# OSL_ROOT_DIR, the base directory to search for OSL.
# This can also be an environment variable.
# OSL_COMPILER, full path to OSL script compiler.
# OSL_FOUND, if false, do not try to use OSL.
# OSL_LIBRARY_VERSION_MAJOR, OSL_LIBRARY_VERSION_MINOR, the major
# and minor versions of OSL library if found.
# If OSL_ROOT_DIR was defined in the environment, use it.
IF(NOT OSL_ROOT_DIR AND NOT $ENV{OSL_ROOT_DIR} STREQUAL "")
SET(OSL_ROOT_DIR $ENV{OSL_ROOT_DIR})
ENDIF()
SET(_osl_FIND_COMPONENTS
oslnoise
oslcomp
oslexec
oslquery
)
SET(_osl_SEARCH_DIRS
${OSL_ROOT_DIR}
/opt/lib/osl
)
FIND_PATH(OSL_INCLUDE_DIR
NAMES
OSL/oslversion.h
HINTS
${_osl_SEARCH_DIRS}
PATH_SUFFIXES
include
)
FOREACH(COMPONENT ${_osl_FIND_COMPONENTS})
STRING(TOUPPER ${COMPONENT} UPPERCOMPONENT)
FIND_LIBRARY(OSL_${UPPERCOMPONENT}_LIBRARY
NAMES
${COMPONENT}
HINTS
${_osl_SEARCH_DIRS}
PATH_SUFFIXES
lib64 lib
)
ENDFOREACH()
# Note linking order matters, and oslnoise existence depends on version.
SET(_osl_LIBRARIES ${OSL_OSLCOMP_LIBRARY})
IF(APPLE)
list(APPEND _osl_LIBRARIES -force_load ${OSL_OSLEXEC_LIBRARY})
ELSE()
list(APPEND _osl_LIBRARIES ${OSL_OSLEXEC_LIBRARY})
ENDIF()
list(APPEND _osl_LIBRARIES ${OSL_OSLQUERY_LIBRARY})
IF(OSL_OSLNOISE_LIBRARY)
list(APPEND _osl_LIBRARIES ${OSL_OSLNOISE_LIBRARY})
ENDIF()
FIND_PROGRAM(OSL_COMPILER oslc
HINTS ${_osl_SEARCH_DIRS}
PATH_SUFFIXES bin)
get_filename_component(OSL_SHADER_HINT ${OSL_COMPILER} DIRECTORY)
get_filename_component(OSL_SHADER_HINT ${OSL_SHADER_DIR}/../ ABSOLUTE)
FIND_PATH(OSL_SHADER_DIR
NAMES
stdosl.h
HINTS
${OSL_ROOT_DIR}
${OSL_SHADER_HINT}
$ENV{OSLHOME}
/usr/share/OSL/
/usr/include/OSL/
PATH_SUFFIXES
share/OSL/shaders
shaders
)
# handle the QUIETLY and REQUIRED arguments and set OSL_FOUND to TRUE if
# all listed variables are TRUE
INCLUDE(FindPackageHandleStandardArgs)
FIND_PACKAGE_HANDLE_STANDARD_ARGS(OSL DEFAULT_MSG _osl_LIBRARIES OSL_INCLUDE_DIR OSL_COMPILER)
IF(OSL_FOUND)
SET(OSL_LIBRARIES ${_osl_LIBRARIES})
SET(OSL_INCLUDE_DIRS ${OSL_INCLUDE_DIR})
FILE(STRINGS "${OSL_INCLUDE_DIR}/OSL/oslversion.h" OSL_LIBRARY_VERSION_MAJOR
REGEX "^[ \t]*#define[ \t]+OSL_LIBRARY_VERSION_MAJOR[ \t]+[0-9]+.*$")
FILE(STRINGS "${OSL_INCLUDE_DIR}/OSL/oslversion.h" OSL_LIBRARY_VERSION_MINOR
REGEX "^[ \t]*#define[ \t]+OSL_LIBRARY_VERSION_MINOR[ \t]+[0-9]+.*$")
STRING(REGEX REPLACE ".*#define[ \t]+OSL_LIBRARY_VERSION_MAJOR[ \t]+([.0-9]+).*"
"\\1" OSL_LIBRARY_VERSION_MAJOR ${OSL_LIBRARY_VERSION_MAJOR})
STRING(REGEX REPLACE ".*#define[ \t]+OSL_LIBRARY_VERSION_MINOR[ \t]+([.0-9]+).*"
"\\1" OSL_LIBRARY_VERSION_MINOR ${OSL_LIBRARY_VERSION_MINOR})
ENDIF()
MARK_AS_ADVANCED(
OSL_INCLUDE_DIR
OSL_SHADER_DIR
)
FOREACH(COMPONENT ${_osl_FIND_COMPONENTS})
STRING(TOUPPER ${COMPONENT} UPPERCOMPONENT)
MARK_AS_ADVANCED(OSL_${UPPERCOMPONENT}_LIBRARY)
ENDFOREACH()
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