XEmacs on OS X Yosemite = Segfault

Hi all,

I've been trying to compile XEmacs on Yosemite (OS X 10.10.2) with the
LLVM compiler from XCode.

So far, all versions I've tried (21.4 and 21.5) are failing with a
segmentation fault.

21.4.24 fails like this.

Dumping under the name xemacs
Testing for Lisp shadows ...
make[1]: *** [xemacs.dmp] Segmentation fault: 11
make[1]: *** Deleting file `xemacs.dmp'
make: *** [src] Error 2

21.5.34 fails like this.

Dumping under the name xemacs
if test -f dump-size; then \
                ../lib-src/insert-data-in-exec temacs xemacs.dmp
xemacs ` ./temacs -si`; \
                ret=$? ; \
                if test ${ret} -eq 2; then \
                        rm -f dump-size ; \
                else \
                        if test ${ret} -eq 1; then \
                                exit 1; \
                        else \
                                chmod +x xemacs ; \
                        fi ; \
                fi ; \
        fi
dumped_data found at offset 0x3d5d10, patching.
dumped_data found at offset 0x3d5d10, patching.
if test ! -f dump-size; then \
                ../lib-src/insert-data-in-exec -s xemacs.dmp > dump-size ; \
                rm -f dump-data.o xemacs xemacs.dmp temacs;\

/Applications/Xcode.app/Contents/Developer/usr/bin/make  xemacs; \
        fi
./xemacs -no-packages -batch -no-autoloads -l update-elc-2.el -f
batch-update-elc-2 /Users/johann/build/xemacs-21.5.34/src/../lisp
make[1]: *** [update-elc-2] Segmentation fault: 11
make: *** [src] Error 2


Do you guys have any suggestions on how to figure out what's wrong, or
configuration flags to try?

My ./configure lines are as follows.

21.4: ./configure --compiler=cc --cflags=-std=gnu89 --with-athena=xaw
--with-mule --with-png=no

21.5: ./configure --with-mule --without-png


Johann