177 lines
5.6 KiB
CMake
177 lines
5.6 KiB
CMake
# - 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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#
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# This module defines the following variables:
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#
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# ILMBASE_INCLUDE_DIRS - 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 (SelectLibraryConfigurations)
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include (FindReleaseAndDebug)
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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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# 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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PATHS "/usr/include" "/usr/local/include" "/sw/include" "/opt/local/include"
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PATH_SUFFIXES include
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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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FIND_RELEASE_AND_DEBUG (${tmp_prefix} NAMES ${libname} DEFAULT_SUFFIXES
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PATHS ${${libpath_var}}
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FIXED_PATHS "/usr/lib" "/usr/local/lib" "/sw/lib" "/opt/local/lib"
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)
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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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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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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 ${ILMBASE_CUSTOM_LIBRARIES})
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separate_arguments(IlmBase_Libraries)
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else ()
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set (IlmBase_Libraries Half Iex Imath IlmThread)
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endif ()
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# Search paths for the IlmBase files
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if (ILMBASE_HOME)
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if (ILMBASE_VERSION)
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set (IlmBase_include_paths
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${ILMBASE_HOME}/ilmbase-${ILMBASE_VERSION}/include
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${ILMBASE_HOME}/include/ilmbase-${ILMBASE_VERSION})
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set (IlmBase_library_paths
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${ILMBASE_HOME}/ilmbase-${ILMBASE_VERSION}/lib)
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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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${IlmBase_library_paths})
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endif ()
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# Locate the header files
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PREFIX_FIND_INCLUDE_DIR (IlmBase
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OpenEXR/IlmBaseConfig.h IlmBase_include_paths)
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# If the headers were found, add its parent to the list of lib directories
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if (ILMBASE_INCLUDE_DIR)
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get_filename_component (tmp_extra_dir "${ILMBASE_INCLUDE_DIR}/../" ABSOLUTE)
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list (APPEND IlmBase_library_paths ${tmp_extra_dir})
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unset (tmp_extra_dir)
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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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set (ILMBASE_INCLUDE_DIRS ${ILMBASE_INCLUDE_DIR})
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if (EXISTS ${ILMBASE_INCLUDE_DIR}/OpenEXR)
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list (APPEND ILMBASE_INCLUDE_DIRS ${ILMBASE_INCLUDE_DIR}/OpenEXR)
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endif()
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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_libvars)
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unset (IlmBase_cachevars)
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unset (ILMBASE_PTHREADS)
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