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Re: i686 Multilib Question
- From: Ian Lance Taylor <iant at google dot com>
- To: "Armin K." <krejzi at email dot com>
- Cc: gcc-help at gcc dot gnu dot org
- Date: Wed, 13 Jun 2012 20:46:38 -0700
- Subject: Re: i686 Multilib Question
- References: <4FD93478.5030204@email.com>
"Armin K." <krejzi@email.com> writes:
> I have currently i686 system (Linux From Scratch) and I would like to
> bootstrap multilib compiler on that one. The problem is, I don't have
> any working multilib compiler, only i686 one. And I don't know where
> to start.
>
> I have tried first enabling multilib and all targets in binutils, then
> statically compiling gcc.
>
> I ran into problems in bootstrap stage and tought it was a bug. A more
> detailed report about this can be found in bug report
> http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53662
>
> Has anyone managed to bootstrap multilib compiler using i686 one? I
> would like to have i686 compiler, but also I want to be able to use
> -m64 which is done by multilib right? I am aware that I need multilib
> binutils, static gcc to compile multilib glibc and use it to bootstrap
> full gcc with shared libraries and such. Am I right? But I am unable
> to accomplish that. Could anyone guide me in right direction? Google
> does not help very much. And yes, I want this. I don't want to install
> or build 64 bit operating system.
In order to build a GCC that can build 64-bit binaries, you need to have
a 64-bit C library and 64-bit binutils installed. Do you?
There is a shell script config.guess in the top level GCC directory.
When you run it, does it print x86_64-unknown-linux-gnu or
i686-unknown-linux-gnu? If it prints i686, that suggests that uname -m
on your system prints i686, and that suggests that your kernel is not
running in 64-bit mode.
Ian