Re: gcc -3.4.4 and linux-2.4.32

[David Daney <ddaney@avtrex.com>]

Kishore K wrote:
> hi
> When 2.4.32 kernel (from linux-mips) is compiled with the tool chain 
> based on gcc 3.4.4 and binutils 2.16.1, the kernel crashes on malta 
> board. The crash file is enclosed along with the mail. If the same 
> kernel is compiled with the tool chain based on gcc 3.3.6, no problem is 
> observed.
> 
> May I know, whether it is because of the changes in ABI in gcc 3.4.

Not exactly.  It has to do with -funit-at-a-time.  In the 2.4.x kernel 
it is assumed that gcc will not reorder top level asm statements and 
functions.  For gcc-3.3.x and earlier this was a valid assumption.  With 
3.4.x and later it is not.

> If 
> so, has any one got the patch to make 2.4.x kernels work with gcc 3.4 
> compilers? From the changelog, I can infer that, some changes have been 
> done in 2.4.28 kernel to work with gcc 3.4 for i386. If so, has the same 
> thing been done for MIPS as well.
> 
IIRC the patches were never applied to linux-mips.org.  If you search 
the archives of this list for messages that I sent, you can find the 
patches.

David Daney.