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From: tonyg@cs.uq.oz.au (Tony Gedge)
Newsgroups: comp.os.minix
Subject: gcc under MacMinix?
Summary: Having problems linking MacMinix kernel with GCC
Keywords: gcc gnu macintosh macminix minix ld
Message-ID: <918@uqcspe.cs.uq.oz.au>
Date: 20 Apr 91 01:22:10 GMT
Sender: news@cs.uq.oz.au
Reply-To: tonyg@cs.uq.oz.au
Lines: 45

I've just ftp'ed the gcc binaries for ST-Minix from plains.nodak.edu.
(i.e. the pub/Minix/uk/mincen/68k/gcc ones) and I've been massaging
them to work properly under MacMinix.

Should I be using the gccXXX.tar.Z files in pub/Minix/uk instead of those
in pub/Minix/uk/mincen/68k/gcc?  Which is better?

After unpacking the binaries and applying the lib and includes patches, I had
to make a few modifications to get gcc producing useable executables:
  1) modify crtso.cpp to include the Mac specific stuff (setup of saveda5 and
	 savedsp)
  2) Some minor modifications to head.s (not important for non-kernel stuff)
  3) Converting the ACK assembler glue code in /usr/src/lib/mac/libmac into
	 MIT syntax.

After these mods were made, I could use gcc to recompile Minix programs which
all ran without difficulty.  I tested my new libmac library glue code and it
appears to be working correctly.

Now the big problem:

I can recompile and link fs and mm without trouble (I'm not worrying about
padding of bss et al just yet!) however the kernel is giving me trouble.  I
can recompile all the sources, however gcc-ld will not link them to produce
the final object.  Make abouts with error code 256, and gcc-ld gives no
error messages about why it couldn't link.  I chmem'ed gcc-ld up to 2Meg and
used 'make -n > mk; sh mk' but got the same message.

The Questions:

Has anyone else rebuilt the MacMinix boot application with gcc?
Can someone give me some leads about how I might approach finding the problem?
What other things will I have to do before I can rebuild the kernel (padding
etc.)?  I'm going to try rebuilding gcc-ld with some 'debugging statments'
so I can find out where it is going wrong.

Thanks in advance,

Tony Gedge.

--
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| Computer Science Department,        | tonyg@cs.uq.oz.au   (Tony Gedge)  |
| University of Queensland, Australia.| "cc stands for Cryptic Crossword" |
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