265 lines
8.5 KiB
CMake
265 lines
8.5 KiB
CMake
# Module to find IlmBase
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#
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# This module will first look into the directories defined by the variables:
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# - ILMBASE_HOME, ILMBASE_VERSION, ILMBASE_LIB_AREA
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#
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# It also supports non-standard names for the library components.
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#
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# To use a custom IlmBase:
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# - Set the variable ILMBASE_CUSTOM to True
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# - Set the variable ILMBASE_CUSTOM_LIBRARIES to a list of the libraries to
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# use, e.g. "SpiImath SpiHalf SpiIlmThread SpiIex"
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# - Optionally set the variable ILMBASE_CUSTOM_INCLUDE_DIR to any
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# particularly weird place that the OpenEXR/*.h files may be found
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# - Optionally set the variable ILMBASE_CUSTOM_LIB_DIR to any
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# particularly weird place that the libraries files may be found
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#
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# This module defines the following variables:
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#
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# ILMBASE_INCLUDE_DIR - where to find half.h, IlmBaseConfig.h, etc.
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# ILMBASE_LIBRARIES - list of libraries to link against when using IlmBase.
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# ILMBASE_FOUND - True if IlmBase was found.
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# Other standarnd issue macros
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include(FindPackageHandleStandardArgs)
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include(FindPackageMessage)
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include(SelectLibraryConfigurations)
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if( ILMBASE_USE_STATIC_LIBS )
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set( _ilmbase_ORIG_CMAKE_FIND_LIBRARY_SUFFIXES ${CMAKE_FIND_LIBRARY_SUFFIXES})
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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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# Macro to assemble a helper state variable
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macro(SET_STATE_VAR varname)
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set(tmp_ilmbaselibs ${ILMBASE_CUSTOM_LIBRARIES})
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separate_arguments(tmp_ilmbaselibs)
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set(tmp_lst
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${ILMBASE_CUSTOM} | ${tmp_ilmbaselibs} |
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${ILMBASE_HOME} | ${ILMBASE_VERSION} | ${ILMBASE_LIB_AREA}
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)
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set(${varname} "${tmp_lst}")
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unset(tmp_ilmbaselibs)
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unset(tmp_lst)
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endmacro()
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# To enforce that find_* functions do not use inadvertently existing versions
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if(ILMBASE_CUSTOM)
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set(ILMBASE_FIND_OPTIONS "NO_DEFAULT_PATH")
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endif()
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# Macro to search for an include directory
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macro(PREFIX_FIND_INCLUDE_DIR prefix includefile libpath_var)
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string(TOUPPER ${prefix}_INCLUDE_DIR tmp_varname)
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find_path(${tmp_varname} ${includefile}
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HINTS ${${libpath_var}}
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PATH_SUFFIXES include
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${ILMBASE_FIND_OPTIONS}
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)
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if(${tmp_varname})
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mark_as_advanced(${tmp_varname})
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endif()
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unset(tmp_varname)
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endmacro()
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# Macro to search for the given library and adds the cached
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# variable names to the specified list
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macro(PREFIX_FIND_LIB prefix libname libpath_var liblist_var cachelist_var)
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string(TOUPPER ${prefix}_${libname} tmp_prefix)
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# Handle new library names for OpenEXR 2.1 build via cmake
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string(REPLACE "." "_" _ILMBASE_VERSION ${ILMBASE_VERSION})
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string(SUBSTRING ${_ILMBASE_VERSION} 0 3 _ILMBASE_VERSION )
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find_library(${tmp_prefix}_LIBRARY_RELEASE
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NAMES ${libname} ${libname}-${_ILMBASE_VERSION}
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HINTS ${${libpath_var}}
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PATH_SUFFIXES lib
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${ILMBASE_FIND_OPTIONS}
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)
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find_library(${tmp_prefix}_LIBRARY_DEBUG
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NAMES ${libname}d ${libname}_d ${libname}debug ${libname}_debug
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HINTS ${${libpath_var}}
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PATH_SUFFIXES lib
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${ILMBASE_FIND_OPTIONS}
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)
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# Properly define ${tmp_prefix}_LIBRARY (cached) and ${tmp_prefix}_LIBRARIES
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select_library_configurations(${tmp_prefix})
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list(APPEND ${liblist_var} ${tmp_prefix}_LIBRARIES)
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# Add to the list of variables which should be reset
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list(APPEND ${cachelist_var}
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${tmp_prefix}_LIBRARY
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${tmp_prefix}_LIBRARY_RELEASE
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${tmp_prefix}_LIBRARY_DEBUG)
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mark_as_advanced(
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${tmp_prefix}_LIBRARY
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${tmp_prefix}_LIBRARY_RELEASE
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${tmp_prefix}_LIBRARY_DEBUG)
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unset(tmp_prefix)
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endmacro()
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# Encode the current state of the external variables into a string
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SET_STATE_VAR(ILMBASE_CURRENT_STATE)
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# If the state has changed, clear the cached variables
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if(ILMBASE_CACHED_STATE AND
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NOT ILMBASE_CACHED_STATE STREQUAL ILMBASE_CURRENT_STATE)
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foreach(libvar ${ILMBASE_CACHED_VARS})
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unset(${libvar} CACHE)
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endforeach()
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endif()
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# Generic search paths
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set(IlmBase_generic_include_paths
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${ILMBASE_CUSTOM_INCLUDE_DIR}
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/usr/include
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/usr/include/${CMAKE_LIBRARY_ARCHITECTURE}
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/usr/local/include
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/sw/include
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/opt/local/include
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)
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set(IlmBase_generic_library_paths
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${ILMBASE_CUSTOM_LIB_DIR}
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/usr/lib
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/usr/lib/${CMAKE_LIBRARY_ARCHITECTURE}
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/usr/local/lib
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/usr/local/lib/${CMAKE_LIBRARY_ARCHITECTURE}
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/sw/lib
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/opt/local/lib
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)
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# Search paths for the IlmBase files
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if(ILMBASE_HOME)
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if(ILMBASE_VERSION)
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set(IlmBase_include_paths
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${ILMBASE_HOME}/ilmbase-${ILMBASE_VERSION}/include
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${ILMBASE_HOME}/include/ilmbase-${ILMBASE_VERSION}
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)
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set(IlmBase_library_paths
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${ILMBASE_HOME}/ilmbase-${ILMBASE_VERSION}/lib
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${ILMBASE_HOME}/lib/ilmbase-${ILMBASE_VERSION}
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)
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endif()
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list(APPEND IlmBase_include_paths ${ILMBASE_HOME}/include)
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set(IlmBase_library_paths
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${ILMBASE_HOME}/lib
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${ILMBASE_HOME}/lib64
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${ILMBASE_LIB_AREA}
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${IlmBase_library_paths})
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endif()
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list(APPEND IlmBase_include_paths ${IlmBase_generic_include_paths})
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list(APPEND IlmBase_library_paths ${IlmBase_generic_library_paths})
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# Locate the header files
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PREFIX_FIND_INCLUDE_DIR(IlmBase
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OpenEXR/IlmBaseConfig.h IlmBase_include_paths)
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if(ILMBASE_INCLUDE_DIR)
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# Get the version from config file, if not already set.
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if(NOT ILMBASE_VERSION)
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FILE(STRINGS "${ILMBASE_INCLUDE_DIR}/OpenEXR/IlmBaseConfig.h" ILMBASE_BUILD_SPECIFICATION
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REGEX "^[ \t]*#define[ \t]+ILMBASE_VERSION_STRING[ \t]+\"[.0-9]+\".*$")
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if(ILMBASE_BUILD_SPECIFICATION)
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if(NOT IlmBase_FIND_QUIETLY)
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message(STATUS "${ILMBASE_BUILD_SPECIFICATION}")
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endif()
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string(REGEX REPLACE ".*#define[ \t]+ILMBASE_VERSION_STRING[ \t]+\"([.0-9]+)\".*"
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"\\1" XYZ ${ILMBASE_BUILD_SPECIFICATION})
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set("ILMBASE_VERSION" ${XYZ} CACHE STRING "Version of ILMBase lib")
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else()
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# Old versions (before 2.0?) do not have any version string, just assuming 2.0 should be fine though.
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message(WARNING "Could not determine ILMBase library version, assuming 2.0.")
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set("ILMBASE_VERSION" "2.0" CACHE STRING "Version of ILMBase lib")
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endif()
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endif()
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endif()
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if(ILMBASE_CUSTOM)
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if(NOT ILMBASE_CUSTOM_LIBRARIES)
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message(FATAL_ERROR "Custom IlmBase libraries requested but ILMBASE_CUSTOM_LIBRARIES is not set.")
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endif()
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set(IlmBase_Libraries ${ILMBASE_CUSTOM_LIBRARIES})
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separate_arguments(IlmBase_Libraries)
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else()
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#elseif(${ILMBASE_VERSION} VERSION_LESS "2.1")
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set(IlmBase_Libraries Half Iex Imath IlmThread)
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#else()
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# string(REGEX REPLACE "([0-9]+)[.]([0-9]+).*" "\\1_\\2" _ilmbase_libs_ver ${ILMBASE_VERSION})
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# set(IlmBase_Libraries Half Iex-${_ilmbase_libs_ver} Imath-${_ilmbase_libs_ver} IlmThread-${_ilmbase_libs_ver})
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endif()
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# Locate the IlmBase libraries
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set(IlmBase_libvars "")
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set(IlmBase_cachevars "")
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foreach(ilmbase_lib ${IlmBase_Libraries})
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PREFIX_FIND_LIB(IlmBase ${ilmbase_lib}
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IlmBase_library_paths IlmBase_libvars IlmBase_cachevars)
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endforeach()
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# Create the list of variables that might need to be cleared
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set(ILMBASE_CACHED_VARS
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ILMBASE_INCLUDE_DIR ${IlmBase_cachevars}
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CACHE INTERNAL "Variables set by FindIlmBase.cmake" FORCE)
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# Store the current state so that variables might be cleared if required
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set(ILMBASE_CACHED_STATE ${ILMBASE_CURRENT_STATE}
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CACHE INTERNAL "State last seen by FindIlmBase.cmake" FORCE)
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# Link with pthreads if required
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if(NOT WIN32 AND EXISTS ${ILMBASE_INCLUDE_DIR}/OpenEXR/IlmBaseConfig.h)
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file(STRINGS ${ILMBASE_INCLUDE_DIR}/OpenEXR/IlmBaseConfig.h
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ILMBASE_HAVE_PTHREAD
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REGEX "^[ \\t]*#define[ \\t]+HAVE_PTHREAD[ \\t]1[ \\t]*\$"
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)
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if(ILMBASE_HAVE_PTHREAD)
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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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endif()
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endif()
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# Use the standard function to handle ILMBASE_FOUND
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FIND_PACKAGE_HANDLE_STANDARD_ARGS(IlmBase DEFAULT_MSG
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ILMBASE_INCLUDE_DIR ${IlmBase_libvars})
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if(ILMBASE_FOUND)
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set(ILMBASE_LIBRARIES "")
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foreach(tmplib ${IlmBase_libvars})
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list(APPEND ILMBASE_LIBRARIES ${${tmplib}})
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endforeach()
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list(APPEND ILMBASE_LIBRARIES ${ILMBASE_PTHREADS})
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if(NOT IlmBase_FIND_QUIETLY)
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FIND_PACKAGE_MESSAGE(ILMBASE
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"Found IlmBase: ${ILMBASE_LIBRARIES}"
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"[${ILMBASE_INCLUDE_DIR}][${ILMBASE_LIBRARIES}][${ILMBASE_CURRENT_STATE}]"
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)
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endif()
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endif()
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# Restore the original find library ordering
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if( ILMBASE_USE_STATIC_LIBS )
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set(CMAKE_FIND_LIBRARY_SUFFIXES ${_ilmbase_ORIG_CMAKE_FIND_LIBRARY_SUFFIXES})
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endif()
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# Unset the helper variables to avoid pollution
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unset(ILMBASE_CURRENT_STATE)
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unset(IlmBase_include_paths)
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unset(IlmBase_library_paths)
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unset(IlmBase_generic_include_paths)
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unset(IlmBase_generic_library_paths)
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unset(IlmBase_libvars)
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unset(IlmBase_cachevars)
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unset(ILMBASE_PTHREADS)
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