message: CMake: add missing dependencies for Flex and Bison rules
diff: @@ -245,6 +245,7 @@ find_package(BISON 3.0 REQUIRED)
  COMMAND ${BISON_EXECUTABLE} -d -t -v
  --output=${BISON_CPP_OUTPUT}
  ${BISON_INPUT}
  + MAIN_DEPENDENCY ${BISON_INPUT}
  COMMENT "Generating parse.cc"
  WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}
  )
  @@ -259,6 +260,7 @@ find_package(FLEX 2.6 REQUIRED)
  COMMAND ${FLEX_EXECUTABLE}
  --outfile=${FLEX_OUTPUT}
  ${FLEX_INPUT}
  + MAIN_DEPENDENCY ${FLEX_INPUT}
  COMMENT "Generating lex.cpp"
  WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}
  )
  