pidgin-skype version 20100826+dfsg-1 failed to build on i386

pidgin-skype version 20100826+dfsg-1 failed to build on i386
Link to failed build: https://launchpad.net/ubuntu/+archive/test-rebuild-20110329/+buildjob/2407221

Direct link to the build log: https://launchpad.net/ubuntu/+archive/test-rebuild-20110329/+buildjob/2407221/+files/buildlog_ubuntu-natty-i386.pidgin-skype_20100826%2Bdfsg-1_FAILEDTOBUILD.txt.gz

This log snippet might be of interest, since it triggered the matcher 'Purging chroot-autobuild'.
Excerpt 1413 lines into the build log:

make[1]: Entering directory `/build/buildd/pidgin-skype-20100826+dfsg'
/usr/bin/make all
make[2]: Entering directory `/build/buildd/pidgin-skype-20100826+dfsg'
gcc -I/usr/include/libpurple -DPURPLE_PLUGINS -DENABLE_NLS -Wall -pthread -I/usr/include/glib-2.0 -I/usr/lib/glib-2.0/include -I/usr/lib64/glib-2.0/include -I/usr/include -I. -g -O2 -pipe libskype.c -o libskype.so -shared -fPIC -DPIC
In file included from /usr/include/glib-2.0/glib/galloca.h:34:0,
                 from /usr/include/glib-2.0/glib.h:32,
                 from libskype.c:41:
/usr/include/glib-2.0/glib/gtypes.h:34:24: fatal error: glibconfig.h: No such file or directory
compilation terminated.
make[2]: *** [all] Error 1
make[2]: Leaving directory `/build/buildd/pidgin-skype-20100826+dfsg'
make[1]: *** [override_dh_auto_build] Error 2
make[1]: Leaving directory `/build/buildd/pidgin-skype-20100826+dfsg'
make: *** [build] Error 2
dpkg-buildpackage: error: debian/rules build gave error exit status 2
******************************************************************************
Build finished at 20110408-1812
FAILED [dpkg-buildpackage died]
Purging chroot-autobuild/build/buildd/pidgin-skype-20100826+dfsg