cmake/modules/UseLemon.cmake

   1 #
   2
   3 find_program(LEMON_EXECUTABLE lemon)
   4
   5 if(LEMON_EXECUTABLE)
   6         # Use system lemon
   7         macro(generate_lemon_file _out _in)
   8                 add_custom_command(
   9                         OUTPUT
  10                                 ${_out}.c
  11                                 # These files are generated as side-effect
  12                                 ${_out}.h
  13                                 ${_out}.out
  14                         COMMAND ${LEMON_EXECUTABLE}
  15                                 -T/usr/share/lemon/lempar.c
  16                                 -d.
  17                                 ${_in}
  18                         DEPENDS
  19                                 ${_in}
  20                 )
  21         endmacro()
  22         add_custom_target(lemon)
  23 else()
  24         # Compile bundled lemon with support for -- to end options
  25         macro(generate_lemon_file _out _in)
  26                 add_custom_command(
  27                         OUTPUT
  28                                 ${_out}.c
  29                                 # These files are generated as side-effect
  30                                 ${_out}.h
  31                                 ${_out}.out
  32                         COMMAND $<TARGET_FILE:lemon>
  33                                 -T${CMAKE_SOURCE_DIR}/tools/lemon/lempar.c
  34                                 -d.
  35                                 --
  36                                 ${_in}
  37                         DEPENDS
  38                                 ${_in}
  39                                 lemon
  40                                 ${CMAKE_SOURCE_DIR}/tools/lemon/lempar.c
  41                 )
  42         endmacro()
  43 endif()
  44
  45 macro(ADD_LEMON_FILES _source _generated)
  46
  47         foreach (_current_FILE ${ARGN})
  48                 get_filename_component(_in ${_current_FILE} ABSOLUTE)
  49                 get_filename_component(_basename ${_current_FILE} NAME_WE)
  50
  51                 set(_out ${CMAKE_CURRENT_BINARY_DIR}/${_basename})
  52
  53                 generate_lemon_file(${_out} ${_in})
  54
  55                 list(APPEND ${_source} ${_in})
  56                 list(APPEND ${_generated} ${_out}.c)
  57         endforeach(_current_FILE)
  58 endmacro(ADD_LEMON_FILES)