cmake/FindGLPK.cmake
author Balazs Dezso <deba@inf.elte.hu>
Thu, 24 Jun 2010 09:27:53 +0200
changeset 891 bb70ad62c95f
parent 637 4faa0c763906
child 1062 caf16813b1e8
permissions -rw-r--r--
Fix critical bug in preflow (#372)

The wrong transition between the bound decrease and highest active
heuristics caused the bug. The last node chosen in bound decrease mode
is used in the first iteration in highest active mode.
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SET(GLPK_ROOT_DIR "" CACHE PATH "GLPK root directory")
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SET(GLPK_REGKEY "[HKEY_LOCAL_MACHINE\\SOFTWARE\\GnuWin32\\Glpk;InstallPath]")
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GET_FILENAME_COMPONENT(GLPK_ROOT_PATH ${GLPK_REGKEY} ABSOLUTE)
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FIND_PATH(GLPK_INCLUDE_DIR
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  glpk.h
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  PATHS ${GLPK_REGKEY}/include
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  HINTS ${GLPK_ROOT_DIR}/include
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)
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FIND_LIBRARY(GLPK_LIBRARY
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  glpk
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  PATHS ${GLPK_REGKEY}/lib
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  HINTS ${GLPK_ROOT_DIR}/lib
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)
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IF(GLPK_INCLUDE_DIR AND GLPK_LIBRARY)
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  FILE(READ ${GLPK_INCLUDE_DIR}/glpk.h GLPK_GLPK_H)
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  STRING(REGEX MATCH "define[ ]+GLP_MAJOR_VERSION[ ]+[0-9]+" GLPK_MAJOR_VERSION_LINE "${GLPK_GLPK_H}")
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  STRING(REGEX REPLACE "define[ ]+GLP_MAJOR_VERSION[ ]+([0-9]+)" "\\1" GLPK_VERSION_MAJOR "${GLPK_MAJOR_VERSION_LINE}")
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  STRING(REGEX MATCH "define[ ]+GLP_MINOR_VERSION[ ]+[0-9]+" GLPK_MINOR_VERSION_LINE "${GLPK_GLPK_H}")
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  STRING(REGEX REPLACE "define[ ]+GLP_MINOR_VERSION[ ]+([0-9]+)" "\\1" GLPK_VERSION_MINOR "${GLPK_MINOR_VERSION_LINE}")
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  SET(GLPK_VERSION_STRING "${GLPK_VERSION_MAJOR}.${GLPK_VERSION_MINOR}")
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  IF(GLPK_FIND_VERSION)
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    IF(GLPK_FIND_VERSION_COUNT GREATER 2)
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      MESSAGE(SEND_ERROR "unexpected version string")
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    ENDIF(GLPK_FIND_VERSION_COUNT GREATER 2)
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    MATH(EXPR GLPK_REQUESTED_VERSION "${GLPK_FIND_VERSION_MAJOR}*100 + ${GLPK_FIND_VERSION_MINOR}")
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    MATH(EXPR GLPK_FOUND_VERSION "${GLPK_VERSION_MAJOR}*100 + ${GLPK_VERSION_MINOR}")
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    IF(GLPK_FOUND_VERSION LESS GLPK_REQUESTED_VERSION)
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      SET(GLPK_PROPER_VERSION_FOUND FALSE)
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    ELSE(GLPK_FOUND_VERSION LESS GLPK_REQUESTED_VERSION)
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      SET(GLPK_PROPER_VERSION_FOUND TRUE)
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    ENDIF(GLPK_FOUND_VERSION LESS GLPK_REQUESTED_VERSION)
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  ELSE(GLPK_FIND_VERSION)
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    SET(GLPK_PROPER_VERSION_FOUND TRUE)
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  ENDIF(GLPK_FIND_VERSION)
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ENDIF(GLPK_INCLUDE_DIR AND GLPK_LIBRARY)
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INCLUDE(FindPackageHandleStandardArgs)
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FIND_PACKAGE_HANDLE_STANDARD_ARGS(GLPK DEFAULT_MSG GLPK_LIBRARY GLPK_INCLUDE_DIR GLPK_PROPER_VERSION_FOUND)
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IF(GLPK_FOUND)
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  SET(GLPK_INCLUDE_DIRS ${GLPK_INCLUDE_DIR})
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  SET(GLPK_LIBRARIES ${GLPK_LIBRARY})
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  SET(GLPK_BIN_DIR ${GLPK_ROOT_PATH}/bin)
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ENDIF(GLPK_FOUND)
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MARK_AS_ADVANCED(GLPK_LIBRARY GLPK_INCLUDE_DIR GLPK_BIN_DIR)
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IF(GLPK_FOUND)
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  SET(LEMON_HAVE_LP TRUE)
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  SET(LEMON_HAVE_MIP TRUE)
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  SET(LEMON_HAVE_GLPK TRUE)
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ENDIF(GLPK_FOUND)