On Mon, 29 Aug 2011, Rafa�~B Muży�~Bo wrote:
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.
It's bison-specific, as you might have discovered by checking the
documention. A quick check of the source shows it was added in bison
1.29
awai
--
Thomas E. Dickey
http://invisible-island.net
ftp://invisible-island.net
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