Crossgcc for m68k under Gentoo Linux

[Rick Jenkins <rick at hartmantech dot com>]

First, THANKS!

I've been struggling to get a Motorola 68000 cross-compiler up, hampered by 
the fact that Bill Gatliff's stuff seems to have vanished from the web. 
You've done a lot of work figuring out the patches and the scripts, with the 
result that a few hours after discovering crossgcc I'm much further forward 
than I've ever been in the past. Great stuff!

A couple of points arise. 

On the web page at 
http://sources.redhat.com/ml/crossgcc/2006-07/
the link to  "CrossGCC FAQ" is broken.

Following the "Quick Start" instructions at  
http://kegel.com/crosstool/crosstool-0.42/doc/crosstool-howto.html
I ran the script unmodified as:

sh demo-m68k.sh

on an up-to-date but somewhat conservative Gentoo Linux PC system using the 
standard kernel as found at kernel.org and stable versions of all software. 
Build environment was:
rick@triffid ~ $ uname -a
Linux triffid 2.6.17.6 #1 PREEMPT Fri Jul 21 12:45:40 MDT 2006 i686 AMD 
Athlon(tm) Processor GNU/Linux
rick@triffid ~ $ gcc --version
gcc (GCC) 3.4.6 (Gentoo 3.4.6-r1, ssp-3.4.5-1.0, pie-8.7.9)

This ran successfully and created a toolchain:

Cross-toolchain build complete. Result 
in /opt/crosstool/gcc-3.3.3-glibc-2.3.2/m68k-unknown-linux-gnu.

but the hello_world test fails:

+ /opt/crosstool/gcc-3.3.3-glibc-2.3.2/m68k-unknown-linux-gnu/bin/m68k-unknown-linux-gnu-gcc -static 
hello.c -o m68k-unknown-linux-gnu-hello-static
hello.c: In function `main':
hello.c:4: error: `PATH_MAX' undeclared (first use in this function)

I'm not sure where the PATH_MAX should be defined, but clearly my system 
lacks it. This seems to be the only problem, since:

/opt/crosstool/gcc-3.3.3-glibc-2.3.2/m68k-unknown-linux-gnu/bin/m68k-unknown-linux-gnu-gcc -static -DPATH_MAX=128 
hello.c -o m68k-unknown-linux-gnu-hello-static

runs with no messages and produces an output file. Since I'm working on an 
embedded 68k system with limited I/O facilities, it's not immediately 
possible to run and test the compiled code. 

Thanks again for a superb set of scripts, I hope you find this information 
useful.

-- 
Rick Jenkins <rick@hartmantech.com>
Hartman Technica           http://www.hartmantech.com 
Phone +1 (403) 230-1987 voice & fax
221 35 Avenue. N.E., Calgary, Alberta, Canada T2E 2K5

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