bug#24256: new module for grep's DFA matcher

[Jim Meyering]

On Sat, Sep 24, 2016 at 8:43 PM, Paul Eggert <address@hidden> wrote:
> After this change, 'make dist' no longer works on the current Ubuntu version
> (16.04.1 LTS). The failure is as follows. I'm not quite sure how to debug
> this sort of thing, as the syntax checks are a bit twisty. Although this
> isn't a huge obstacle to issuing a new grep release (as one can run 'make
> dist' on the current Fedora version), it's still a bit troublesome.
>
> PS. I updated to the latest gnulib to fix a 'make check' failure on AIX 7.1.
>
> ...
> space_tab
> 0.01 space_tab
> tight_scope
> make[4]: Entering directory '/home/eggert/src/gnu/grep/src'
> dfaalloc
> dfacomp
> dfaexec
> dfafree
> dfaisfast
> dfamust
> dfamustfree
> dfasuperset
> dfasyntax
> case_folded_counterparts
> init_localeinfo
> the above functions should have static scope
> /home/eggert/src/gnu/grep/tight-scope.mk:42: recipe for target
> '_gl_tight_scope' failed
> make[4]: *** [_gl_tight_scope] Error 1
> make[4]: Leaving directory '/home/eggert/src/gnu/grep/src'
> maint.mk:1578: recipe for target 'sc_tight_scope' failed
> make[3]: *** [sc_tight_scope] Error 1
> make[3]: Leaving directory '/home/eggert/src/gnu/grep'
> Makefile:1710: recipe for target 'run-syntax-check' failed
> make[2]: *** [run-syntax-check] Error 2
> make[2]: Leaving directory '/home/eggert/src/gnu/grep'
> Makefile:1386: recipe for target 'distdir' failed
> make[1]: *** [distdir] Error 2
> make[1]: Leaving directory '/home/eggert/src/gnu/grep'
> Makefile:1487: recipe for target 'dist' failed
> make: *** [dist] Error 2
>

Hi Paul,
That is probably because you have a stray dfa.o file laying around.
Since that corresponds to a now-VC-removed dfa.c file, "make clean"
fails to remove the .o file. Just remove it manually and the test
should then pass.