Wireshark-dev: Re: [Wireshark-dev] Lemon on a clean build

From: Gilbert Ramirez <gram@xxxxxxxxxxxxxxx>
Date: Tue, 12 Feb 2013 09:13:55 -0800
On a "zero-touch re-build" (what I call a re-build after having changed nothing), I see these steps being performed (in different directories):

1)
  PERL     svnversion.h

2)
  LEMON    grammar.h
  CC     grammar.lo
  CCLD   libdfilter.la

3)

  LEMON    dtd_grammar.h
  CC     dtd_grammar.lo
  CCLD   libwireshark.la


4)
  LEMON    mate_grammar.h
  CC     mate_grammar.lo
  CCLD   mate.la


5)
  PERL     svnversion.h
(yes, once again)

6)

  CCLD   tshark
  CCLD   dftest
  CCLD   rawshark
(expected, if a few *.lo's were re-built)

If I chdir to epan/dfilter, and run a 0-touch rebuild ,twice, I see 2 different outputs:

$~/prj/wireshark-trunk/epan/dfilter$ make
  LEMON    grammar.h

$ ~/prj/wireshark-trunk/epan/dfilter$ make
  LEMON    grammar.h
  CC     grammar.lo
  CCLD   libdfilter.la

So, yes, something is wrong with these dependencies. I'll take a look.

Gilbert





On Tue, Feb 12, 2013 at 7:58 AM, Evan Huus <eapache@xxxxxxxxx> wrote:
Sorry, so I mis-used the word 'clean' in this context.

These lines are popping up after running make twice in a row, i.e. the
first time it builds, the second time it should do nothing at all
(since nothing's changed) but it's still running lemon for some
reason.

This happens on a completely fresh checkout of trunk.

On Tue, Feb 12, 2013 at 1:26 AM, Guy Harris <guy@xxxxxxxxxxxx> wrote:
>
> On Feb 11, 2013, at 8:11 PM, Evan Huus <eapache@xxxxxxxxx> wrote:
>
>> Ever since the recent Makefile changes, running a 'clean' make (i.e.
>> no changes at all since the last build) now results in a couple of
>> calls to lemon:
>>
>> LEMON    grammar.h
>> LEMON    dtd_grammar.h
>> LEMON    mate_grammar.h
>>
>> Is this intentional? Or has it always done this, and it's just more
>> noticeable with quiet-build enabled?
>
> Well, those calls to Lemon are either bogus or mislabeled in Make's output, given that what it *should* say is something such as
>
>         LEMON   grammar.lemon
>         LEMON   dtd_grammar.lemon
>         LEMON   mate_grammar.lemon
>
> "make clean" shouldn't be removing the resulting .c or .h files, although "make distclean" should, given that we're not distributing the results of Lemon any more.
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