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Message-ID: <20140813123832.GK12888@brightrain.aerifal.cx>
Date: Wed, 13 Aug 2014 08:38:32 -0400
From: Rich Felker <dalias@...c.org>
To: musl@...ts.openwall.com
Subject: Re: compiling musl on x86_64 linux with ppc
On Wed, Aug 13, 2014 at 11:18:43AM +0200, u-igbb@...ey.se wrote:
> Hello,
>
> I am trying to compile musl 1.1.4 on x86_64 with ppc (latest from cvs).
Are you sure it's latest? If you're using a snapshot there are
multiple branches (iirc 1.0.DEVEL and 1.1.DEVEL or something like
that) and the old one is very outdated and broken.
> Unfortunately the compilation breaks with
>
> -----------
> ...
> pcc -std=c99 -nostdinc -ffreestanding -fexcess-precision=standard -frounding-math -D_XOPEN_SOURCE=700 -I./arch/x86_64 -I./src/internal -I./include -Os -pipe -fomit-frame-pointer -fno-unwind-tables -fno-asynchronous-unwind-tables -Wa,--noexecstack -Werror=implicit-function-declaration -Werror=implicit-int -Werror=pointer-sign -Werror=pointer-arith -fno-stack-protector -c -o src/aio/aio_readwrite.o src/aio/aio_readwrite.c
> ../arch/x86_64/syscall_arch.h, line 37: warning: no register assignment (yet)
> ../arch/x86_64/syscall_arch.h, line 46: warning: no register assignment (yet)
> ../arch/x86_64/syscall_arch.h, line 47: warning: no register assignment (yet)
> ../arch/x86_64/syscall_arch.h, line 56: warning: no register assignment (yet)
> ../arch/x86_64/syscall_arch.h, line 57: warning: no register assignment (yet)
> ../arch/x86_64/syscall_arch.h, line 58: warning: no register assignment (yet)
> src/aio/aio_readwrite.c, line 23: compiler error: unsupported xasm constraint r11
> error: XXXXX/libexec/ccom terminated with status 1
> make: *** [src/aio/aio_readwrite.o] Error 1
> -----------
>
> Is there any way around this, short of adding the register assignment
> functionality to the compiler?
Just use the #ifdef __clang__ branch of the code which handles the
same brokenness in clang. :-)
Rich
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