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#-----------------------------------------------------------------------------
MACRO(VTK_THIRD_PARTY_OPTION upper lower)
OPTION(VTK_USE_SYSTEM_${upper} "Use the system's ${lower} library." OFF)
MARK_AS_ADVANCED(VTK_USE_SYSTEM_${upper})
IF(VTK_USE_SYSTEM_${upper})
IF(EXISTS ${CMAKE_ROOT}/Modules/Find${upper}.cmake)
INCLUDE(${CMAKE_ROOT}/Modules/Find${upper}.cmake)
ELSE(EXISTS ${CMAKE_ROOT}/Modules/Find${upper}.cmake)
INCLUDE(${VTK_SOURCE_DIR}/CMake/Find${upper}.cmake)
ENDIF(EXISTS ${CMAKE_ROOT}/Modules/Find${upper}.cmake)
MARK_AS_ADVANCED(${upper}_INCLUDE_DIR ${upper}_LIBRARY)
IF(${upper}_FOUND)
SET(VTK_${upper}_LIBRARIES ${${upper}_LIBRARIES})
IF("${upper}" MATCHES "^PNG$")
SET(PNG_INCLUDE_DIR ${PNG_PNG_INCLUDE_DIR})
MARK_AS_ADVANCED(PNG_PNG_INCLUDE_DIR)
ENDIF("${upper}" MATCHES "^PNG$")
ELSE(${upper}_FOUND)
MESSAGE(SEND_ERROR "VTK_USE_SYSTEM_${upper} is ON, but ${upper}_LIBRARY is NOTFOUND.")
ENDIF(${upper}_FOUND)
ELSE(VTK_USE_SYSTEM_${upper})
SET(VTK_${upper}_LIBRARIES vtk${lower})
ENDIF(VTK_USE_SYSTEM_${upper})
ENDMACRO(VTK_THIRD_PARTY_OPTION)
#-----------------------------------------------------------------------------
MACRO(VTK_THIRD_PARTY_INCLUDE upper lower)
IF(VTK_USE_SYSTEM_${upper})
IF(${upper}_INCLUDE_DIR)
SET(VTK_INCLUDE_DIRS_SYSTEM ${VTK_INCLUDE_DIRS_SYSTEM} ${${upper}_INCLUDE_DIR})
ENDIF(${upper}_INCLUDE_DIR)
ELSE(VTK_USE_SYSTEM_${upper})
SET(VTK_INCLUDE_DIRS_SOURCE_TREE ${VTK_INCLUDE_DIRS_SOURCE_TREE}
${VTK_BINARY_DIR}/Utilities/${lower}
${VTK_SOURCE_DIR}/Utilities/${lower}
)
ENDIF(VTK_USE_SYSTEM_${upper})
ENDMACRO(VTK_THIRD_PARTY_INCLUDE)
MACRO(VTK_THIRD_PARTY_INCLUDE2 upper)
IF(VTK_USE_SYSTEM_${upper})
IF(${upper}_INCLUDE_DIR)
SET(VTK_INCLUDE_DIRS_SYSTEM ${VTK_INCLUDE_DIRS_SYSTEM} ${${upper}_INCLUDE_DIR})
ENDIF(${upper}_INCLUDE_DIR)
ENDIF(VTK_USE_SYSTEM_${upper})
ENDMACRO(VTK_THIRD_PARTY_INCLUDE2)
#-----------------------------------------------------------------------------
MACRO(VTK_THIRD_PARTY_SUBDIR upper lower)
IF(NOT VTK_USE_SYSTEM_${upper})
SUBDIRS(${lower})
ENDIF(NOT VTK_USE_SYSTEM_${upper})
ENDMACRO(VTK_THIRD_PARTY_SUBDIR)
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