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Re: Help with create_pipe_bidi

From: Eric Blake
Subject: Re: Help with create_pipe_bidi
Date: Fri, 17 Jul 2009 06:25:46 -0600
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According to Eric Blake on 7/17/2009 6:14 AM:
>> The attempt to use create-pipe-bidi is pushed in Bison's branch
>> candidates/create-pipe-bidi, if some wants to play with it.  The test
>> case is compiled as src/test-pipe.
> I'll try and find some time to play with it in the coming week.

I'm running into build problems on cygwin, probably related to the fact
that bison is trying to convert gnulib into use within a non-recursive
makefile, and coupled with the fact that cygwin has no spawn.h so the
gnulib replacement has to kick in.  The build is failing with:

make: *** No rule to make target `spawn.h', needed by `all'.  Stop.

In lib/gnulib.mk, I see lines like:


In the corresponding Makefile, I see:

SPAWN_H = spawn.h
STDBOOL_H = lib/

This looks suspicious.  My <stdbool.h> does not need replacing, yet this
is ending up with a directory name (rather than a file name); meanwhile,
since <spawn.h> DOES need replacing, but is not being spelled as
lib/spawn.h, it is killing the entire make process.  I don't know if the
bug is in gnulib-tool or in bison, but somehow the conversion from
lib/gnulib.mk into inclusion from a top-level Makefile is failing to put
built sources in the appropriate subdirectory.

- --
Don't work too hard, make some time for fun as well!

Eric Blake             address@hidden
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