libx86 version 1.1+ds1-6 failed to build on armel

[Mattias Backman]

libx86 version 1.1+ds1-6 failed to build on armel
Link to failed build: https://launchpad.net/ubuntu/+archive/test-rebuild-20110114-arm/+buildjob/2170670

Direct link to the build log: https://launchpad.net/ubuntu/+archive/test-rebuild-20110114-arm/+buildjob/2170670/+files/buildlog_ubuntu-natty-armel.libx86_1.1%2Bds1-6_FAILEDTOBUILD.txt.gz

This log snippet might be of interest, since it triggered the matcher 'Purging chroot-autobuild'.
Excerpt 608 lines into the build log:

make LIBRARY=static static
make[3]: Entering directory `/build/buildd/libx86-1.1+ds1'
cc -g -O2 -c -o x86-common.o x86-common.c
cc -g -O2 -c -o thunk.o thunk.c
thunk.c: In function 'x_inb':
thunk.c:44:1: error: impossible constraint in 'asm'
make[3]: *** [thunk.o] Error 1
make[3]: Leaving directory `/build/buildd/libx86-1.1+ds1'
make[2]: *** [default] Error 2
make[2]: Leaving directory `/build/buildd/libx86-1.1+ds1'
dh_auto_build: make -j1 BACKEND=x86emu returned exit code 2
make[1]: *** [override_dh_auto_build] Error 2
make[1]: Leaving directory `/build/buildd/libx86-1.1+ds1'
make: *** [build-stamp] Error 2
dpkg-buildpackage: error: debian/rules build gave error exit status 2
******************************************************************************
Build finished at 20110120-0738
FAILED [dpkg-buildpackage died]
Purging chroot-autobuild/build/buildd/libx86-1.1+ds1