Re: [parisc-linux] Initial setup of the `glibc' in the target rootfile system

[Christoph Plattner <christoph.plattner@dot.at>]

To add some "light" here in the discussion.

The `user-defined-trusted-dirs=/lib' is exactly the "key" in the 
discussion. It tells the online running library loader (file
./elf/ld-load.c)
where to search the libraries. 

When building a cross tool chain and having the library install in
/usr/parisc/hppa-linux/lib, then the cross tool chain will search
there, but also the running programs, because this path is hard-coded
in the ld-load.c loader executable.

No my idea was, to give a "second search path" for the loader. So
the loader will search in /usr/parisc/hppa-linux/lib, will fail and
retry in /lib (as defined in `user-defined-trusted-dirs=/lib'). So also
the running binary on the target machine will access the glibc in /lib.

With friendly regards
	Christoph P.

PS: Of course the way of using --prefix=/usr and installing with 
install_root != /usr is a way, but lets say it, it is a HACK !!

The problems I have with many tools, is that they are not prepared
for cross-compiling very well. I need some evenings for bigger 
packages.


Ulrich Drepper wrote:
> 
> "Rafael E. Herrera" <raffo@neuronet.pitt.edu> writes:
> 
> > export MACH=i386-linux
> > export DEST=/usr
> > export ROOT=~/parisk
> >
> > HOSTCC=gcc CC=hppa-linux-gcc $ROOT/source/glibc/configure \
> > --prefix=$DEST --build=$MACH \
> > --host=hppa-linux --target=hppa-linux \
> > --with-headers=$ROOT/source/linux/include --disable-profile \
> > --without-cvs --enable-add-ons
> 
> This looks OK (though providing HOSTCC shouldn't be necessary) and
> --build, --host, and --target have no effect.  The configure script
> will pick up all it has to know from the CC value.
> 
> > make MAKE="make -j 10" user-defined-trusted-dirs=/lib
> 
> Providing make isn't necessary.  Also, the `user-defined-trusted-dirs'
> is not needed.  Just run
> 
>    make -j10
> 
> > make install user-defined-trusted-dirs=/lib \
> >  install_root=/tmp/glibc
> 
> Again, loose the `user-defined-trusted-dirs'.  Also, is /tmp/glibc
> where the nfsroot is picked up?  If not, just install in the nfsroot
> directory.
> 
> --
> ---------------.                          ,-.   1325 Chesapeake Terrace
> Ulrich Drepper  \    ,-------------------'   \  Sunnyvale, CA 94089 USA
> Red Hat          `--' drepper at redhat.com   `------------------------
> 
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