Gentoo Archives: gentoo-mips

From: "Michał Górny" <mgorny@g.o>
To: gentoo-mips@l.g.o
Cc: kumba@g.o, mips@g.o, multilib@g.o
Subject: Re: [gentoo-mips] Re: On MIPS using the same CHOST for all multilib ABIs
Date: Sun, 29 Dec 2013 21:48:17
Message-Id: 20131229224806.66137df9@gentoo.org
In Reply to: [gentoo-mips] Re: On MIPS using the same CHOST for all multilib ABIs by Joshua Kinard
1 Dnia 2013-12-29, o godz. 16:40:08
2 Joshua Kinard <kumba@g.o> napisał(a):
3
4 > On 12/28/2013 5:58 PM, Michał Górny wrote:
5 > > I've noticed today that mips uses the same CHOST value for all three
6 > > ABIs it supports:
7 > >
8 > > arch/mips/mips64/multilib/make.defaults:CHOST_o32="${CHOST}"
9 > > arch/mips/mips64/multilib/make.defaults:CHOST_n32=${CHOST}
10 > > arch/mips/mips64/multilib/make.defaults:CHOST_n64=${CHOST}
11 > > arch/mips/mipsel/mips64el/multilib/make.defaults:CHOST_o32="${CHOST}"
12 > > arch/mips/mipsel/mips64el/multilib/make.defaults:CHOST_n32="${CHOST}"
13 > > arch/mips/mipsel/mips64el/multilib/make.defaults:CHOST_n64="${CHOST}"
14 > >
15 > > [...]
16 >
17 > Matt can probably vouch for this better, but the only two ABIs affected by
18 > this are n32 and n64. mips[el]-unknown-linux-gnu implies a 32-bit
19 > big/little endian CHOST, which means the o32 ABI.
20 > mips64[el]-unknown-linux-gnu means either n32 or n64. So no change should
21 > be needed for o32-based installs.
22
23 Just to be clear:
24
25 profiles/arch/mips/mipsel/mips64el/multilib/make.defaults:
26
27 CHOST="mips64el-unknown-linux-gnu"
28
29 [...]
30
31 CFLAGS_o32="-mabi=32"
32 CHOST_o32="${CHOST}"
33
34 CFLAGS_n32="-mabi=n32"
35 CHOST_n32="${CHOST}"
36
37 CFLAGS_n64="-mabi=64"
38 CHOST_n64="${CHOST}"
39
40 So in this case, o32 actually uses mips64el-unknown-linux-gnu, unless
41 I'm missing something.
42
43 --
44 Best regards,
45 Michał Górny

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Re: [gentoo-mips] Re: On MIPS using the same CHOST for all multilib ABIs Markos Chandras <hwoarang@g.o>