[J-core] [musl] musl-cross-make / litecross improvements
dalias at libc.org
Tue May 3 20:16:20 EDT 2016
On Tue, May 03, 2016 at 11:57:05PM +0200, Szabolcs Nagy wrote:
> * Szabolcs Nagy <nsz at port70.net> [2016-05-03 22:16:22 +0200]:
> > * Rich Felker <dalias at libc.org> [2016-05-03 14:02:30 -0400]:
> > > On Tue, May 03, 2016 at 01:39:43PM +0200, Szabolcs Nagy wrote:
> > > > i think the usr/ and lib64/ symlinks are useful
> > > > (so it can be used as rootfs without fiddling
> > > > with etc/ld-musl*.path).
> > >
> > > Yes. Is there a good way to override that in gcc or should we just
> > > make the symlinks?
> > >
> > output/lib64 can be eliminated by
> > COMMON_CONFIG += --libdir=/lib
This does not seem useful except for deuglifying; that dir is not part
of the target root.
> > output/x86_64-linux-musl/lib64 install path is trickier:
> > it is controlled by the $toolexeclibdir make variable.
> > which is set according to $CC -print-multi-os-directory
> > which is controlled by multilib and multilib_defaults from
> > $CC -dumpspecs which comes from multilib.h generated by
> > genmultilib based on parameters from config/i386/t-linux64
> it was not clear if the t-linux64 thing could be overridden, but
> GCC_CONFIG += --with-multilib-list=
> fixes it (the lib dir is lib/ then).
I wonder if this works for all targets, and how it relates to
--disable-multilib. At least on sh4 if you disable multilib you need
to --enable-incomplete-targets because the kernel is built with
-m4-nofpu and gcc normally errors out when you pass that option and
the libs aren't built. I seem to recall multilib options being a mess
on some other archs too.
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