#
# $Id$
#
# - Find lex executable
#

INCLUDE(FindCygwin)

FIND_PROGRAM(LEX_EXECUTABLE
  NAMES
    flex
    lex
  PATHS
    ${CYGWIN_INSTALL_PATH}/bin
    /bin
    /usr/bin
    /usr/local/bin
    /sbin
)

INCLUDE(FindPackageHandleStandardArgs)
FIND_PACKAGE_HANDLE_STANDARD_ARGS(LEX DEFAULT_MSG LEX_EXECUTABLE)

MARK_AS_ADVANCED(LEX_EXECUTABLE)

# flex a .l file

MACRO(ADD_LEX_FILES _sources )
    FOREACH (_current_FILE ${ARGN})
      GET_FILENAME_COMPONENT(_in ${_current_FILE} ABSOLUTE)
      GET_FILENAME_COMPONENT(_basename ${_current_FILE} NAME_WE)

      SET(_outc ${CMAKE_CURRENT_BINARY_DIR}/${_basename}.c)
      SET(_outh ${CMAKE_CURRENT_BINARY_DIR}/${_basename}_lex.h)

      ADD_CUSTOM_COMMAND(
        OUTPUT ${_outc}
#       COMMAND ${LEX_EXECUTABLE}
        COMMAND ${CMAKE_SOURCE_DIR}/tools/runlex.sh ${LEX_EXECUTABLE}
          -o${_outc}
          --header-file=${_outh}
          ${_in}
        DEPENDS ${_in}
      )
    SET(${_sources} ${${_sources}} ${_outc} )
    INCLUDE_DIRECTORIES(${CMAKE_CURRENT_SOURCE_DIR})
  ENDFOREACH (_current_FILE)
ENDMACRO(ADD_LEX_FILES)