Commit Graph

2 Commits

Author SHA1 Message Date
Mark Olesen
b29a0119de ENH: minor code tidying, machine simplifications for wmkdepend parser 2018-04-13 16:17:39 +02:00
Mark Olesen
de72a04aeb ENH: make it easier to switch between the various make dependencies programs.
- However, the new ragel-based parser is much faster
  than the others, and does not cause 'too many open files' error
  that the flex-based parser does (issue #784).

  The timings (using src/sampling as being somewhat representative)

    $ wclean; wmakeLnInclude -u .; time wmake -s dep

        3.4s  wmkdepend (ragel) [now default]
        5.7s  wmkdep (flex)
        6.1s  cpp -M

- The makeDepend script is for testing purposes only, but could used as
  a hook for other dependency generation systems (eg, ninja).
  It simply wraps 'cpp -M' in a form that is calling compatible with
  wmkdepend.

BUG: wmkdepend parser was missing optional leading space on #include match

STYLE: use -G2 (goto-based) option for wmkdepend state machine

- the machine is compact with few states and lends itself to this
2018-04-12 10:14:03 +02:00