SET(GLPK_ROOT_DIR "" CACHE PATH "GLPK root directory")

SET(GLPK_REGKEY "[HKEY_LOCAL_MACHINE\\SOFTWARE\\GnuWin32\\Glpk;InstallPath]")

GET_FILENAME_COMPONENT(GLPK_ROOT_PATH ${GLPK_REGKEY} ABSOLUTE)

FIND_PATH(GLPK_INCLUDE_DIR

  glpk.h

  PATHS ${GLPK_REGKEY}/include

  HINTS ${GLPK_ROOT_DIR}/include

)

FIND_LIBRARY(GLPK_LIBRARY

  glpk

  PATHS ${GLPK_REGKEY}/lib

  HINTS ${GLPK_ROOT_DIR}/lib

)

IF(GLPK_INCLUDE_DIR AND GLPK_LIBRARY)

  FILE(READ ${GLPK_INCLUDE_DIR}/glpk.h GLPK_GLPK_H)

  STRING(REGEX MATCH "define[ ]+GLP_MAJOR_VERSION[ ]+[0-9]+" GLPK_MAJOR_VERSION_LINE "${GLPK_GLPK_H}")

  STRING(REGEX REPLACE "define[ ]+GLP_MAJOR_VERSION[ ]+([0-9]+)" "\\1" GLPK_VERSION_MAJOR "${GLPK_MAJOR_VERSION_LINE}")

  STRING(REGEX MATCH "define[ ]+GLP_MINOR_VERSION[ ]+[0-9]+" GLPK_MINOR_VERSION_LINE "${GLPK_GLPK_H}")

  STRING(REGEX REPLACE "define[ ]+GLP_MINOR_VERSION[ ]+([0-9]+)" "\\1" GLPK_VERSION_MINOR "${GLPK_MINOR_VERSION_LINE}")

  SET(GLPK_VERSION_STRING "${GLPK_VERSION_MAJOR}.${GLPK_VERSION_MINOR}")

  IF(GLPK_FIND_VERSION)

    IF(GLPK_FIND_VERSION_COUNT GREATER 2)

      MESSAGE(SEND_ERROR "unexpected version string")

    ENDIF(GLPK_FIND_VERSION_COUNT GREATER 2)

    MATH(EXPR GLPK_REQUESTED_VERSION "${GLPK_FIND_VERSION_MAJOR}*100 + ${GLPK_FIND_VERSION_MINOR}")

    MATH(EXPR GLPK_FOUND_VERSION "${GLPK_VERSION_MAJOR}*100 + ${GLPK_VERSION_MINOR}")

    IF(GLPK_FOUND_VERSION LESS GLPK_REQUESTED_VERSION)

      SET(GLPK_PROPER_VERSION_FOUND FALSE)

    ELSE(GLPK_FOUND_VERSION LESS GLPK_REQUESTED_VERSION)

      SET(GLPK_PROPER_VERSION_FOUND TRUE)

    ENDIF(GLPK_FOUND_VERSION LESS GLPK_REQUESTED_VERSION)

  ELSE(GLPK_FIND_VERSION)

    SET(GLPK_PROPER_VERSION_FOUND TRUE)

  ENDIF(GLPK_FIND_VERSION)

ENDIF(GLPK_INCLUDE_DIR AND GLPK_LIBRARY)

INCLUDE(FindPackageHandleStandardArgs)

FIND_PACKAGE_HANDLE_STANDARD_ARGS(GLPK DEFAULT_MSG GLPK_LIBRARY GLPK_INCLUDE_DIR GLPK_PROPER_VERSION_FOUND)

IF(GLPK_FOUND)

  SET(GLPK_INCLUDE_DIRS ${GLPK_INCLUDE_DIR})

  SET(GLPK_LIBRARIES ${GLPK_LIBRARY})

  SET(GLPK_BIN_DIR ${GLPK_ROOT_PATH}/bin)

ENDIF(GLPK_FOUND)

MARK_AS_ADVANCED(GLPK_LIBRARY GLPK_INCLUDE_DIR GLPK_BIN_DIR)