Building Yaboot on OS X

[ms419@freezone.co.uk]

I encountered an error building yaboot on Mac OS X:

<snip>
[fis:~/tmp/macosx/yaboot-1.3.13] jablko% make
gcc -Os  -nostdinc -Wall -isystem `gcc -print-file-name=include` 
-fsigned-char -DVERSION=\"1.3.13\"	 -DTEXTADDR=0x200000 -DDEBUG=0 
-DMALLOCADDR=0x300000 -DMALLOCSIZE=0x100000 -DKERNELADDR=0x01400000 -I 
./include -DCONFIG_COLOR_TEXT -DCONFIG_SET_COLORMAP -DUSE_MD5_PASSWORDS 
-DCONFIG_FS_XFS -DCONFIG_FS_REISERFS -D__ASSEMBLY__  -c -o 
second/crt0.o second/crt0.S
second/crt0.S:8:Parameter syntax error (parameter 1)
second/crt0.S:8:Invalid mnemonic 'h'
second/crt0.S:9:Parameter syntax error
second/crt0.S:9:Invalid mnemonic 'l'
second/crt0.S:10:Parameter syntax error (parameter 1)
second/crt0.S:10:Invalid mnemonic 'h'
second/crt0.S:11:Parameter syntax error
second/crt0.S:11:Invalid mnemonic 'l'
second/crt0.S:12:Parameter syntax error (parameter 1)
second/crt0.S:13:Parameter syntax error (parameter 1)
second/crt0.S:14:Parameter syntax error (parameter 1)
second/crt0.S:15:Parameter syntax error (parameter 1)
second/crt0.S:16:Parameter syntax error
second/crt0.S:25:Parameter syntax error (parameter 1)
second/crt0.S:27:Parameter syntax error (parameter 1)
second/crt0.S:28:Parameter syntax error (parameter 1)
second/crt0.S:28:Invalid mnemonic 'ha'
second/crt0.S:29:Parameter syntax error (parameter 1)
second/crt0.S:29:Invalid mnemonic 'l'
second/crt0.S:30:Parameter syntax error (parameter 1)
second/crt0.S:31:Parameter syntax error (parameter 2)
make: *** [second/crt0.o] Error 1
[fis:~/tmp/macosx/yaboot-1.3.13] jablko%
</snip>

I'm trying to build yaboot 1.3.13 on Mac OS X 10.3.3, with XcodeTools 
1.1. I couldn't find any specific instructions for building on OS X 
either in the INSTALL file or through Google, so I just ran make.

I guess gcc doesn't like crt0.S, or the arguments supplied?

Has anyone built yaboot on OS X? Can someone identify what I'm doing 
wrong, or suggest what I might try?

Thanks a lot!

Jack