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[Bug-gnulib] Re: getopt trouble on uClibc systems
From: |
Simon Josefsson |
Subject: |
[Bug-gnulib] Re: getopt trouble on uClibc systems |
Date: |
Thu, 01 Jul 2004 16:58:03 +0200 |
User-agent: |
Gnus/5.110003 (No Gnus v0.3) Emacs/21.3.50 (gnu/linux) |
Paul Eggert <address@hidden> writes:
>> I have had troubles with AC_DEFINE re-defining core functions when
>> only parts of my project links with gnulib -- I typically don't want
>> to link gnulib in my libraries, but I want to make use of it in a
>> library command line interface. I'll see if I can get it to work
>> without it.
>
> If you don't want gnulib in your libraries, but you do want it in your
> library, then I'm afraid you need to have a different config.h for
> your command-line interface than you do for your library -- at least
> if you use the part of gnulib that redefines symbols like 'malloc'. I
> don't see an easy way around this problem.
I'm doing this in one project, but having two config.h complicates
things. I haven't tried it, but merely renaming one of the config.h
to, e.g., cfg.h would probably be as complicated, since "config.h" is
hard coded all over the place.
> But you don't want to check whether these symbols are declared; you
> want to check whether they're defined. (The distinction between
> definition and declaration is how this whole thread started....)
> That is, in:
>
>> #if !HAVE_DECL_OPTIND
>> int optind = 1;
>> #endif
>
> optind should be defined if it isn't supplied by the library; it
> shouldn't matter whether it's declared. (You're not using the
> system-defined declaration for optind anyway.)
Yes, I realized this too, but couldn't find any more appropriate
autoconf macro. AC_CHECK_LIB says it is for functions only. I guess
getopt.m4 can use AC_LINK_IFELSE or something for the variables, but
it looks messy.
I'll try to produce a patch with your ideas, to get something concrete
to look at.
Thanks,
Simon
- [Bug-gnulib] Re: getopt trouble on uClibc systems,
Simon Josefsson <=
- [Bug-gnulib] config.h (was: Re: getopt trouble on uClibc systems), Simon Josefsson, 2004/07/01
- [Bug-gnulib] Re: getopt trouble on uClibc systems, Simon Josefsson, 2004/07/01
- [Bug-gnulib] Re: getopt trouble on uClibc systems, Paul Eggert, 2004/07/01
- [Bug-gnulib] Re: getopt trouble on uClibc systems, Simon Josefsson, 2004/07/02
- [Bug-gnulib] Re: getopt trouble on uClibc systems, Paul Eggert, 2004/07/02
- [Bug-gnulib] Re: getopt trouble on uClibc systems, Simon Josefsson, 2004/07/02
- [Bug-gnulib] Re: getopt trouble on uClibc systems, Simon Josefsson, 2004/07/02
- Re: [Bug-gnulib] Re: getopt trouble on uClibc systems, Karl Berry, 2004/07/02
- [Bug-gnulib] Re: getopt trouble on uClibc systems, Simon Josefsson, 2004/07/06