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Date: Tue, 08 Jan 2008 19:17:00 -0000
From: Kai Ruottu <karuottu@mbnet.fi>
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To: Bob Yan <ccrg.yang@gmail.com>
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Subject: Re: Errors when building powerpc-softfloat-linux-gnu libgfrotran
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Kai Ruottu wrote:
> Too complicated, generally the headers from the self-made glibc should 
> have been in
> this '/home/yxb/install/powerpc-softfloat-linux-gnu/include' already 
> when producing the
> earlier GCC parts!
Let's make it more clear: There should be ONLY ONE glibc with headers 
and libraries
for the $target at a time!  Not "some headers from some old glibc" mixed 
with the new
libraries from the just built glibc!

The '--with-sysroot=$sysroot' as a bare idea is useful, although using 
the traditional install
scheme, nothing disables one to use the symlinks :

    $prefix/$target/include -> $sysroot/usr/include
and
    $prefix/$target/lib -> $sysroot/usr/lib

and then make those few additional symlinks :

    ld.so.1 ->  ../../lib/ld.so.1
    libc.so.6 ->  ../../lib/libc.so.6

into the '$sysroot/usr/lib' so that also these would be seen there. And 
edit the 'libc.so' and
'libpthread.so' scripts to not have those absolute paths like in that :
     GROUP ( /lib/libc.so.6 /usr/lib/libc_nonshared.a )
or something row in the '$sysroot/usr/lib/libc.so' script...

If one has some older glibc in that $sysroot, the recommended way could 
be to do a :

     rm -f -r *

in the $sysroot before installing the new glibc there...  The 'make 
install_root=$sysroot install'
command quite sure doesn't remove those old 'lib*-x.y.z.so*' files in 
the '$sysroot/lib', ie it is
not any "update" command which would do things like this....