Re: [Bug-gnulib] bison.m4 breaks build on systems without Bison

[Bruno Haible]

Derek Robert Price wrote:
> I suggest calling AM_MISSING_PROG(YACC, bison -y) from bison.m4 rather
> than just naively setting and substing.

Why? What's the effect/benefit?

AM_MISSING_PROG is not a documented automake macro. As such, it can
disappear from any automake release without prior notice. I wouldn't
want to use such a macro.

>+       * modules/getdate (EXTRA_DIST): List getdate.c so that systems without
>+       Bison may build the object file.

Strange. For gettext, I've listed the bison-built files only in BUILT_SOURCES,
not in EXTRA_DIST, and the distributions contain these files. How come that
this doesn't work for you? Which version of automake are you using? Have
you overridden the automake generated 'distdir' target?

Bruno