* [gentoo-mips] On MIPS using the same CHOST for all multilib ABIs
@ 2013-12-28 22:58 99% Michał Górny
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From: Michał Górny @ 2013-12-28 22:58 UTC (permalink / raw
To: gentoo-mips; +Cc: mips, multilib
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Hello, folks.
I've noticed today that mips uses the same CHOST value for all three
ABIs it supports:
arch/mips/mips64/multilib/make.defaults:CHOST_o32="${CHOST}"
arch/mips/mips64/multilib/make.defaults:CHOST_n32=${CHOST}
arch/mips/mips64/multilib/make.defaults:CHOST_n64=${CHOST}
arch/mips/mipsel/mips64el/multilib/make.defaults:CHOST_o32="${CHOST}"
arch/mips/mipsel/mips64el/multilib/make.defaults:CHOST_n32="${CHOST}"
arch/mips/mipsel/mips64el/multilib/make.defaults:CHOST_n64="${CHOST}"
Long story short, this sucks and will cause trouble.
In the multilib stuff, we're using CHOST for two purposes:
1. wrapped headers are put in /usr/include/$CHOST,
2. multilib executables are prefixed with $CHOST-.
(1) here is not really a killer feature but I'd rather avoid changing
this at this point. (2) is actually a killer feature, since the eclass
sets CHOST properly and thanks to that AC_CHECK_TOOL and friends can
find multilib *-config progs and stuff without any special hackery.
And those are just the examples I can think of. I suspect that more stuff
may actually expect CHOST to uniquely identify build, especially some
tricky hidden features in autotools :).
I'd suggest that you changed the CHOST values to uniquely identify ABI
in use, at least in multilib profiles and preferably in all of them.
--
Best regards,
Michał Górny
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