Re: Building a Linux->AIX crosscompiler -- problem with libgcc_s.a

[Kai Ruottu <karuottu at mbnet dot fi>]

Kai Ruottu wrote:
> > > I didn't use the '--with-sysroot=$sysroot' to point to the
> > > (unexisting) AIX5.3 C library...
> >
> > What is that business? Would you have a pointer to dome f* manual I 
> > could use to educate myself? Even if the AIX C library is not freely 
> > available, I could get a hold of one, but what would I have to do 
> > with it?
> Putting it below some thought-out $sysroot and pointing to it using 
> '--with-sysroot=$sysroot'
> when configuring binutils and GCC could be a good idea!
The "traditional" install place is the '$tooldir' aka '$prefix/$target', 
where $prefix and $target are the values given in
the '--prefix=$prefix' and '--target=$target' configure options.  The 
target binutils (with bare names) are still in the
'$tooldir/bin' although the new '--with-sysroot=$sysroot' would be used 
to change the places for the 'include' and
'lib' from that '$tooldir' to '$sysroot/usr' !  The target binutils are 
executable binaries for the $host but they will handle
binaries for the $target.  With GCCs for embedded targets the 
$tooldir/include and $tooldir/lib will still keep the
target headers and the target libraries, one can think them being some 
"data" which the binutils will handle...  The
reason why the '--with-sysroot=' is suggested is that there aren't just 
that '/usr/include' and '/usr/lib' but many other
'lib's and maybe also 'include's which will belong to the "AIX C 
library".  The traditional install scheme doesn't cater
these extra includes and libs in any way.   I myself browsed the 
'gcc/config/rs6000/*aix*' files and the '*_SPEC's in
the config headers told there being many 'lib' directories in use in an 
AIX system...