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Re: GCC 9 enabled for x86 and arm platforms.
On Sun, Sep 13, 2020 at 07:13:31PM +1000, matthew green wrote:
> > Would -r flag in build.sh command be sufficient to ensure a clean build?
> >
> > Something like
> > ===> build.sh command: ./build.sh -m amd64 -B nb899-20190723 -M ../obj -T ../tooldir -r -U distribution kernel=SANDY7
>
> this is probably good enough.
>
> -r removes tooldir and destdir. the lack of -u means
> you're doing a cleandir which should mean it rebuilds
> everything else.
That's not always sufficient. Because the clean rules (most of them
anyway) specifically remove $(OBJS) rather than *.o, and do similar
things for other build products, after changes stuff can get left
behind by cleandir. Occasionally it's not harmless stuff.
Deleting the whole obj tree before a full build doesn't cost very much
and it's a good precaution with large changes.
--
David A. Holland
dholland%netbsd.org@localhost
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