libXaw3d: optional features
Rafał Mużyło
galtgendo at gmail.com
Sun Aug 28 22:40:58 PDT 2011
On Sun, Aug 28, 2011 at 10:15:05AM -0400, Gaetan Nadon wrote:
>
> "AM_YFLAGS is usually used to pass the -d option to yacc.
> Automake knows what this means and will automatically adjust its rules
> to update and distribute the header file built by ‘yacc -d’."
>
>
> ./configure --help:
>
> YFLAGS The list of arguments that will be passed by default to $YACC.
> This script will default YFLAGS to the empty string to avoid a
> default value of `-d' given by some make applications.
>
>
> It would appear there is a long story behind this. Not to mention
> platforms we don't use,
> different versions of yacc and bison, make programs, backward
> compatibility, etc..., etc...
>
> There are a couple of apps and the xserver using it as well and I find
> it reassuring when the same situations are coded the same way and have
> been reviewed.
>
I can't say that I've used yacc, but 'bison -y -Wall' doesn't print any
compatibility warnings about '%defines', so it should have been OK.
What I really am complaining about, is automake using *only* YFLAGS for
the detection, while '%defines' seems to be a valid solution too.
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