package kmflcomp-0.9.8-1 failed to build from source with "ld --as-needed"

Binary package hint: kmflcomp

Package failed to build from source on Ubuntu natty
Here is the error log:

gcc -Wall -g -g -O2 -g -O2 -Wl,-Bsymbolic-functions -o kmflcomp kmflcomp-kmfl_compiler.o -lX11 -L/usr/X11R6/lib ../src/.libs/libkmflcomp.a
../src/.libs/libkmflcomp.a(libkmflcomp_la-kmflcomp.o): In function `text_to_keysym':
/home/tarun/source/kmflcomp/kmflcomp-0.9.8/src/kmflcomp.c:1329: undefined reference to `XStringToKeysym'
../src/.libs/libkmflcomp.a(libkmflcomp_la-kmflcomp.o): In function `make_keysym':
/home/tarun/source/kmflcomp/kmflcomp-0.9.8/src/kmflcomp.c:1350: undefined reference to `XOpenDisplay'
/home/tarun/source/kmflcomp/kmflcomp-0.9.8/src/kmflcomp.c:1354: undefined reference to `XKeysymToKeycode'
/home/tarun/source/kmflcomp/kmflcomp-0.9.8/src/kmflcomp.c:1355: undefined reference to `XKeycodeToKeysym'
/home/tarun/source/kmflcomp/kmflcomp-0.9.8/src/kmflcomp.c:1356: undefined reference to `XCloseDisplay'
collect2: ld returned 1 exit status
make[3]: *** [kmflcomp] Error 1
make[3]: Leaving directory `/home/tarun/source/kmflcomp/kmflcomp-0.9.8/kmfl_compiler'
make[2]: *** [all-recursive] Error 1
make[2]: Leaving directory `/home/tarun/source/kmflcomp/kmflcomp-0.9.8'
make[1]: *** [all] Error 2
make[1]: Leaving directory `/home/tarun/source/kmflcomp/kmflcomp-0.9.8'
make: *** [debian/stamp-makefile-build] Error 2
dpkg-buildpackage: error: debian/rules build gave error exit status 2