[racket-dev] build hang on s390x

Hi, it's the debian guys again and their wacky architectures.

The build on the s390x (64 bit version) seems to hang at the following
place

/usr/bin/make ../gracket3m
make[6]: Entering directory `/home/bremner/racket-5.2.1+dfsg1/build/gracket/gc2'
../../racket/racket3m -cqu /home/bremner/racket-5.2.1+dfsg1/src/gracket/gc2/../../racket/gc2/xform.rkt --setup ../../racket/gc2 --cpp "gcc -E -I/home/bremner/racket-5.2.1+dfsg1/src/gracket/gc2/../../racket/gc2 -I./../../racket/ -I/home/bremner/racket-5.2.1+dfsg1/src/gracket/gc2/../../racket/include/     -Dwx_xt -MMD"  --keep-lines -o xsrc/grmain.c +D INITIAL_COLLECTS_DIRECTORY='"'"`cd /home/bremner/racket-5.2.1+dfsg1/src/gracket/gc2/../../../collects; pwd`"'"' /home/bremner/racket-5.2.1+dfsg1/src/gracket/gc2/../grmain.c

I killed it after about 30 minutes. The CPU is at 100%, but it doesn't
seem to be using that much memory.

Anything suggests for things to try to debug?

d