From: u-igbb@aetey.se
To: Rich Felker <dalias@libc.org>
Cc: musl@lists.openwall.com
Subject: Re: compiling musl on x86_64 linux with pcc
Date: Thu, 14 Aug 2014 17:00:08 +0200 [thread overview]
Message-ID: <20140814150008.GS5170@example.net> (raw)
In-Reply-To: <20140814144702.GZ12888@brightrain.aerifal.cx>
On Thu, Aug 14, 2014 at 10:47:02AM -0400, Rich Felker wrote:
> > > > __builtin_va_list non-mandatory?
> > >
> > > How else would you do it? There's no real alternative.
> >
> > Well, tcc works e.g. with uclibc, which means this is possible,
> > even though I did not look at "how".
>
> Apparently tcc has its own stdarg.h which uses the nonsense legacy
> definition for i386 where the arguments are assumed to lie at fixed
> locations on the stack; this assumption is invalid because the
> compiler need not reuse the passed-in storage as the local object, and
> in the case of inlining there won't even be any passed-in storage. But
> it probably works for tcc since tcc sucks.
:)
> See the __GNUC__>=3
> condition in musl's stdarg.h. Disabling that (perhaps adding
> &&!__TCC__ or similar) should make tcc work with musl on i386, but
This is a good news (modulo the limitations) and at least some benefit
from the legacy stuff - tcc is invaluable for rapid prototyping.
> x86_64 is harder since there is no legacy definition and tcc did its
> own craziness that relies on external functions named __va_*.
This is a bad news.
Thanks for the explanation Rich,
Rune
next prev parent reply other threads:[~2014-08-14 15:00 UTC|newest]
Thread overview: 41+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-08-13 9:18 compiling musl on x86_64 linux with ppc u-igbb
2014-08-13 9:29 ` "pcc" of course ([musl] compiling musl on x86_64 linux with ppc) u-igbb
2014-08-13 9:49 ` compiling musl on x86_64 linux with ppc Szabolcs Nagy
2014-08-13 10:25 ` compiling musl on x86_64 linux with pcc u-igbb
2014-08-13 11:22 ` u-igbb
2014-08-13 11:53 ` summary: [musl] " u-igbb
2014-08-13 12:38 ` compiling musl on x86_64 linux with ppc Rich Felker
2014-08-13 12:56 ` u-igbb
2014-08-13 14:23 ` Rich Felker
2014-08-13 14:43 ` compiling musl on x86_64 linux with pcc u-igbb
2014-08-13 14:43 ` compiling musl on x86_64 linux with ppc Szabolcs Nagy
2014-08-14 7:10 ` compiling musl on x86_64 linux with pcc u-igbb
2014-08-14 14:20 ` Rich Felker
2014-08-14 14:38 ` u-igbb
2014-08-14 14:47 ` Rich Felker
2014-08-14 15:00 ` u-igbb [this message]
2014-08-15 10:49 ` va_list (was: [musl] compiling musl on x86_64 linux with pcc) u-igbb
2014-08-15 13:44 ` Rich Felker
2014-08-15 15:07 ` u-igbb
2014-08-15 15:56 ` Rich Felker
2014-08-15 17:12 ` u-igbb
2014-08-15 8:05 ` compiling musl on x86_64 linux with ppc u-igbb
2014-08-25 8:28 ` compiling musl on x86_64 linux with pcc u-igbb
2014-08-25 8:34 ` u-igbb
2014-08-25 15:46 ` Rich Felker
2014-08-26 19:34 ` u-igbb
2014-08-26 19:54 ` Rich Felker
2014-08-27 7:40 ` u-igbb
2014-08-27 7:54 ` Rich Felker
2014-08-27 8:52 ` variadic args (was: [musl] compiling musl on x86_64 linux with pcc) u-igbb
2014-08-27 16:34 ` Rich Felker
2014-08-28 8:13 ` u-igbb
2014-08-28 14:40 ` Rich Felker
2014-08-28 16:55 ` u-igbb
2014-08-27 14:38 ` compiling musl with pcc (i486-pc-linux-gnu) " u-igbb
2014-08-27 16:36 ` Rich Felker
2014-09-23 19:05 ` compiling musl on x86_64 linux with pcc u-igbb
2014-09-23 19:31 ` Rich Felker
2014-09-24 8:26 ` u-igbb
2014-08-13 23:39 ` compiling musl on x86_64 linux with ppc Isaac Dunham
2014-08-13 23:41 ` Rich Felker
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