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# - Find SWIG
# This module finds an installed SWIG. It sets the following variables:
# SWIG_FOUND - set to true if SWIG is found
# SWIG_DIR - the directory where swig is installed
# SWIG_EXECUTABLE - the path to the swig executable
# SWIG_VERSION - the version number of the swig executable
#
# All informations are collected from the SWIG_EXECUTABLE so the
# version to be found can be changed from the command line by
# means of setting SWIG_EXECUTABLE
#
SET(SWIG_FOUND FALSE)
FIND_PROGRAM(SWIG_EXECUTABLE swig)
IF(SWIG_EXECUTABLE)
EXECUTE_PROCESS(COMMAND ${SWIG_EXECUTABLE} -swiglib
OUTPUT_VARIABLE SWIG_swiglib_output
ERROR_VARIABLE SWIG_swiglib_error
RESULT_VARIABLE SWIG_swiglib_result)
IF(SWIG_swiglib_result)
IF(SWIG_FIND_REQUIRED)
MESSAGE(SEND_ERROR "Command \"${SWIG_EXECUTABLE} -swiglib\" failed with output:\n${SWIG_swiglib_error}")
ELSE(SWIG_FIND_REQUIRED)
MESSAGE(STATUS "Command \"${SWIG_EXECUTABLE} -swiglib\" failed with output:\n${SWIG_swiglib_error}")
ENDIF(SWIG_FIND_REQUIRED)
ELSE(SWIG_swiglib_result)
STRING(REGEX REPLACE "[\n\r]+" ";" SWIG_swiglib_output ${SWIG_swiglib_output})
# force the path to be computed each time in case SWIG_EXECUTABLE has changed.
SET(SWIG_DIR SWIG_DIR-NOTFOUND)
FIND_PATH(SWIG_DIR swig.swg PATHS ${SWIG_swiglib_output})
IF(SWIG_DIR)
SET(SWIG_FOUND 1)
SET(SWIG_USE_FILE ${CMAKE_ROOT}/Modules/UseSWIG.cmake)
EXECUTE_PROCESS(COMMAND ${SWIG_EXECUTABLE} -version
OUTPUT_VARIABLE SWIG_version_output
ERROR_VARIABLE SWIG_version_output
RESULT_VARIABLE SWIG_version_result)
IF(SWIG_version_result)
MESSAGE(SEND_ERROR "Command \"${SWIG_EXECUTABLE} -version\" failed with output:\n${SWIG_version_output}")
ELSE(SWIG_version_result)
STRING(REGEX REPLACE ".*SWIG Version[^0-9.]*\([0-9.]+\).*" "\\1"
SWIG_version_output "${SWIG_version_output}")
SET(SWIG_VERSION ${SWIG_version_output} CACHE STRING "Swig version" FORCE)
ENDIF(SWIG_version_result)
ENDIF(SWIG_DIR)
ENDIF(SWIG_swiglib_result)
ENDIF(SWIG_EXECUTABLE)
IF(NOT SWIG_FOUND)
IF(NOT SWIG_FIND_QUIETLY)
IF(SWIG_FIND_REQUIRED)
MESSAGE(FATAL_ERROR "SWIG was not found. Please specify Swig executable location")
ELSE(SWIG_FIND_REQUIRED)
MESSAGE(STATUS "SWIG was not found. Please specify Swig executable location")
ENDIF(SWIG_FIND_REQUIRED)
ENDIF(NOT SWIG_FIND_QUIETLY)
ENDIF(NOT SWIG_FOUND)
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