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Message
From: Matjaz Breskvar<phoenix@o...>
Date: Wed Oct 26 21:41:35 CEST 2005
Subject: [openrisc] Linux-2.4 with uClibc
* Jacob Bower (jab00@d...) wrote:
> Hi,
>
> I realise this may have been discussed at length already and I may just be
> missing something simple, but please could someone help me to get a build
> environment for Linux-2.4 with uClibc. I've got as far as being able to
> build executeables, but when I try to run them in the pre-made initrd
> environment supplied in the CVS, I get the error:
>
> ./a.out: 1: Syntax error: "(" unexpecte
>
> To get to this I followed the following steps:
>
> * Build binutils and gcc for with target or32-elf.
> * Build Linux-2.4 for or32.
> * Build uClibc against Linux-2.4 build, and install into or32-elf gcc
> environment (/opt/or32-elf/or32-elf/).
> * Extract __errrno* files from libc.a
> * Modify gcc specs file to link against crt0, crti, crtn and the errno
> objects.
> * Compile a simple hello world program with: or32-elf-gcc -e __start test.c
i use something like:
or32-linux-gcc -O2 -o test test.c __errno* -L/path-to-or32-uclibc
-I/path-to-or32-includes
but since you are able to compile the test program, i guess you are ok here.
(a quick or32-*-objdump of the file should confirm all is ok there)
> * Add the resulting a.out file to the initrd ext2 image using a loop-back
> mount.
> * Boot openrisc on an FPGA.
> * Run the a.out from the busybox command line.
first thing worth checking is that there is the same ELF Machine code set in
linux (include/asm-or32/elf.h, define EM_OR32) and in binutils.
there were some changes lately and since ramdisk is still working for you, i
would guess that you have the old version of EM_OR32 define in linux, but
new one in binutils.
please let me know if this solves your problem; otherwise you may send me
the test file source, preprocessed source and binary for me to check.
best regards,
p.
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