From: Aleksey Nogin <nogin@cs.caltech.edu>
To: Xavier Leroy <Xavier.Leroy@inria.fr>
Cc: Caml List <caml-list@inria.fr>
Subject: Re: [Caml-list] OCaml 3.08.3 fails to compile under Fedora Core 4 (GCC 4).
Date: Sun, 19 Jun 2005 01:16:13 -0700 [thread overview]
Message-ID: <42B529CD.6070106@cs.caltech.edu> (raw)
In-Reply-To: <20050619074551.GA623@yquem.inria.fr>
On 19.06.2005 00:45, Xavier Leroy wrote:
>>As was already mentioned on this list about a month ago, OCaml 3.08.3
>>fails to compile with GCC4. [...]
>>As far as I can tell, last time this came up on this list nobody have
>>offered any solutions short of downgrading GCC. Is there any other way
>>to get it to work? TIA for any suggestions.
>
>
> A simple workaround: after running configure, change config/Makefile
> to set BNG_ASM_LEVEL=0 (instead of 1 or 2). This will turn off all
> inline asm stuff, at significant cost in speed of bignum operations.
>
I've realized that in Fedora Extras 4 the ocaml package contains the
following patch:
--- ocaml-3.08.3/otherlibs/num/bng_ia32.c.x86 2005-05-09
15:24:29.000000000 -0400
+++ ocaml-3.08.3/otherlibs/num/bng_ia32.c 2005-05-09
22:02:50.000000000 -0400
@@ -121,7 +121,7 @@
"leal 4(%1), %1 \n\t"
"decl %2 \n\t"
"jnz 1b"
- : "+&r" (a), "+&r" (b), "+&rm" (blen), "+&r" (out)
+ : "+&r" (a), "+&r" (b), "+m" (blen), "+&r" (out)
: "rm" (d)
: "eax", "edx");
}
@@ -164,7 +164,7 @@
"leal 4(%1), %1 \n\t"
"decl %2 \n\t"
"jnz 1b"
- : "+&r" (a), "+&r" (b), "+&rm" (blen), "+&rm" (out), "=&r" (tmp)
+ : "+&r" (a), "+&r" (b), "+m" (blen), "+m" (out), "=&r" (tmp)
: "rm" (d)
: "eax", "edx");
}
Is this reasonable? Also,
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21291 suggests using -O0
(which seems to work as well).
--
Aleksey Nogin
Home Page: http://nogin.org/
E-Mail: nogin@cs.caltech.edu (office), aleksey@nogin.org (personal)
Office: Moore 04, tel: (626) 395-2200
next prev parent reply other threads:[~2005-06-19 8:16 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-06-19 3:30 Aleksey Nogin
2005-06-19 7:45 ` [Caml-list] " Xavier Leroy
2005-06-19 8:16 ` Aleksey Nogin [this message]
2005-06-19 10:00 ` Xavier Leroy
2005-06-19 22:27 ` John Skaller
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