cmake/modules/FindLEX.cmake

   1 #
   2 # - Find flex/lex executable
   3 #
   4
   5 include(FindChocolatey)
   6
   7 find_program(LEX_EXECUTABLE
   8   NAMES
   9     win_flex
  10     flex
  11     lex
  12   PATHS
  13     ${CHOCOLATEY_BIN_PATH}
  14     /bin
  15     /usr/bin
  16     /usr/local/bin
  17     /sbin
  18 )
  19
  20 INCLUDE(FindPackageHandleStandardArgs)
  21 FIND_PACKAGE_HANDLE_STANDARD_ARGS(LEX DEFAULT_MSG LEX_EXECUTABLE)
  22
  23 MARK_AS_ADVANCED(LEX_EXECUTABLE)
  24
  25 # flex a .l file
  26
  27 MACRO(ADD_LEX_FILES _source _generated)
  28     FOREACH (_current_FILE ${ARGN})
  29       GET_FILENAME_COMPONENT(_in ${_current_FILE} ABSOLUTE)
  30       GET_FILENAME_COMPONENT(_basename ${_current_FILE} NAME_WE)
  31
  32       SET(_outc ${CMAKE_CURRENT_BINARY_DIR}/${_basename}.c)
  33       SET(_outh ${CMAKE_CURRENT_BINARY_DIR}/${_basename}_lex.h)
  34
  35       ADD_CUSTOM_COMMAND(
  36         OUTPUT ${_outc} ${_outh}
  37         COMMAND ${LEX_EXECUTABLE} $<$<OR:$<CONFIG:Debug>,$<CONFIG:RelWithDebInfo>>:--debug> --outfile=${_outc} --header-file=${_outh} ${_in}
  38         DEPENDS ${_in}
  39       )
  40       LIST(APPEND ${_source} ${_in})
  41       LIST(APPEND ${_generated} ${_outc})
  42       INCLUDE_DIRECTORIES(${CMAKE_CURRENT_SOURCE_DIR})
  43       INCLUDE_DIRECTORIES(${CMAKE_CURRENT_BINARY_DIR})
  44     ENDFOREACH (_current_FILE)
  45 ENDMACRO(ADD_LEX_FILES)
  46