This is the mail archive of the
mailing list for the GCC project.
Re: [PATCH]: Separate target and host config files
Nathan Sidwell <firstname.lastname@example.org> writes:
> This patch implements the subset idea. Paolo had sufficient autoconf/m4-fu
> to create the right macros to do this.
This, I like. It's even better than the grep idea, because the
indication of whether any given macro is relevant to the target is
right next to the definition of the macro in configure.ac.
> Each #define in the autoheader'd config.in gets wrapped in a #ifndef
> USED_FOR_TARGET, _unless_ we specifically ask it not to. The
> slightly funky formatting for the macro #endif
> is necessary to stop autoheader's scanning of the configure file from
> barfing. This causes two blank lines between each entry of config.in.
> Paolo knows the details.
You might be able to get rid of the extra blank line by writing
but this is untested, and I wouldn't bother trying very hard to make
it work. Extra blank lines are harmless, after all.
I think the redefinition of AH_TEMPLATE belongs in configure.ac, not
aclocal.m4, but if the autoconf custom is to put it in aclocal.m4 then
go with that.
I don't see how auto-host.h is now getting included in tconfig.h.