Re: can't run gcc 4.5.3/4.6.0 under ubuntu 11.04

[Kai Ruottu <kai.ruottu@wippies.com>]

19.5.2011 7:48, Klaus Rudolph kirjoitti:

> Marc Glisse wrote:
>>
>> If you keep only the system ld (don't install your own) and compile a new
>> gcc, does it work?
>
> Without building own binutils it works.

Yes, the 'ld -> ld.bfd' in Ubuntu 11.04 seems to be patched to search
from more places than the usual '/lib*' and '/usr/lib*'. Using the
command :

    ld -verbose | less

will show the built-in search directories and linker script...

>>> Using system ld instead of system gcc is changing nothing, or?
>>
>> The difference is whether gcc passes different options to ld or ld was
>> compiled with different options (or patches). If you insist on compiling
>> your own, the first thing to do would be to check how the ubuntu versions
>> were compiled.
>>
>
> There is already a bug report for this item:
> https://bugs.launchpad.net/ubuntu/+source/binutils/+bug/738098
>
> In hope the changes for ubuntu could shared with standard binutils or a bugfix for ubuntu will arise.
>
> I will begin with building without own binutils

This whole issue is one-eyed and forgets cross-compiling completely,
with this one as default will :

- use the original Ubuntu 11.04 glibc etc C libraries in their native
   install scheme in a $sysroot

- produce GNU binutils from sources, usually from the Linux ones at
   ftp.kernel.org

- produce GCC from sources, usually from the FSF ones

I wouldn't expect the '--with-sysroot=' changing the default search
paths in 'ld' in the 'i686-ubuntu-linux-gnu' case in any way although
it seems that Ubuntu isn't any normal/standard Linux at all but tries
to be a custom one with customized install paths for its C libraries.

Nothing however disables one to normalize the install directories in
the $sysroot to follow the expected Linux standards...