toonloop version 2.0.6-2 failed to build on armel

toonloop version 2.0.6-2 failed to build on armel
Link to failed build: https://launchpad.net/ubuntu/+source/toonloop/2.0.6-2/+build/2509302

Direct link to the build log: https://launchpad.net/ubuntu/+source/toonloop/2.0.6-2/+build/2509302/+files/buildlog_ubuntu-oneiric-armel.toonloop_2.0.6-2_FAILEDTOBUILD.txt.gz

This log snippet might be of interest, since it triggered the matcher 'Purging chroot-autobuild'.
Excerpt 2603 lines into the build log:

g++ -DHAVE_CONFIG_H -I. -DBOOST_FILESYSTEM_VERSION=2 -O2 -Wall -Werror -Wextra -Wfatal-errors -pthread -I/usr/include -pthread -I/usr/include/glib-2.0 -I/usr/lib/arm-linux-gnueabi/glib-2.0/include -I/usr/include/cairo -I/usr/include/atk-1.0 -I/usr/include/pango-1.0 -I/usr/include/gdk-pixbuf-2.0 -I/usr/include/freetype2 -I/usr/include/libpng12 -I/usr/include/clutter-1.0 -I/usr/include/gstreamer-0.10 -I/usr/include/json-glib-1.0 -I/usr/include/pixman-1 -I/usr/include/libxml2 -pthread -I/usr/include/cairo -I/usr/include/atk-1.0 -I/usr/include/pango-1.0 -I/usr/include/gdk-pixbuf-2.0 -I/usr/include/glib-2.0 -I/usr/lib/arm-linux-gnueabi/glib-2.0/include -I/usr/include/freetype2 -I/usr/include/libpng12 -I/usr/include/gio-unix-2.0/ -I/usr/include/clutter-1.0 -I/usr/include/gtk-2.0 -I/usr/include/json-glib-1.0 -I/usr/include/pixman-1 -I/usr/lib/gtk-2.0/include -lm -lpthread -D__LINUX_ALSA__ -D__UNIX_JACK__ -D__LITTLE_ENDIAN__ -O2 -Wall -Werror -Wextra -Wfatal-errors -DPIXMAPS_DIR=\"/usr/share/pixmaps\" -O2 -Wall -Werror -Wextra -Wfatal-errors -c -o toonloop-application.o `test -f 'application.cpp' || echo './'`application.cpp
In file included from /usr/include/GL/gl.h:2091:0,
                 from /usr/include/GL/glx.h:45,
                 from gui.h:25,
                 from application.cpp:40:
/usr/include/GL/glext.h:5040:19: error: conflicting declaration 'typedef ptrdiff_t GLintptr'
compilation terminated due to -Wfatal-errors.
make[3]: *** [toonloop-application.o] Error 1
make[3]: Leaving directory `/build/buildd/toonloop-2.0.6/src'
make[2]: *** [all] Error 2
make[2]: Leaving directory `/build/buildd/toonloop-2.0.6/src'
make[1]: *** [all-recursive] Error 1
make[1]: Leaving directory `/build/buildd/toonloop-2.0.6'
make: *** [debian/stamp-makefile-build] Error 2
dpkg-buildpackage: error: debian/rules build gave error exit status 2
******************************************************************************
Build finished at 20110518-1856
FAILED [dpkg-buildpackage died]
Purging chroot-autobuild/build/buildd/toonloop-2.0.6