Subversion Repositories or1k

README for uC-libc on the m68k[nommu] architecture

James Graves <jgraves@deltamobile.com>

For now (2001/1/9) support for the m68k should be considered "alpha"
quality at best.  It mostly works OK for some of the stuff I'm working
on, but you can't fully compile other things (like the user
applications for uClinux).  Needs lots more testing.

Only developed/tested with m68k-pic-coff-gcc 2.7.2.3-pic-060999, from
Lineo.

Configuration:

        Read and edit the Config file, carefully.

        TARGET_ARCH=m68k
        CROSS = m68k-pic-coff-
        CC = $(CROSS)gcc
        STRIPTOOL = $(CROSS)strip
        KERNEL_SOURCE=/opt/uClinux/linux        
        HAS_MMU = false
        HAS_FLOATS = false
        MALLOC = malloc-simple
        INSTALL_DIR = /opt/uClinux/m68k-pic-coff

        The regular malloc library is broken, dunno why.  Use
        simple-malloc.

Installation:
        Theoretically, you should be able to install right over the
        existing uC-libc 0.9.1 files in
        /opt/uClinux/m68k-pic-coff/include, but I recommend cleaning
        out all the include files there.  

        The only file in there that's not from the old uC-libc is
        assert.h, but I don't know why that would be the valid copy.

        run:
                make install

Problems:

        I _may_ be able to help if you run into problems.  Create a
        really, really short program that demonstrates the problem,
        and contact me.

TODO:
        Fix vfork().

        Does crt0.o still need to be a separate file?  Can't I just
        stick it in libc.a and be done with it?  Is that specified in
        the GCC link options?