post4pavan@ubuntu:~/Desktop/xen21/tools$ make
make[1]: Entering directory `/home/post4pavan/Desktop/xen21/tools/libxc'
mkdir -p xen
( cd xen && ln -sf ../../../xen/include/public/*.h . )
mkdir -p xen/hvm
( cd xen/hvm && ln -sf ../../../../xen/include/public/hvm/*.h . )
mkdir -p xen/io
( cd xen/io && ln -sf ../../../../xen/include/public/io/*.h . )
mkdir -p xen/linux
( cd xen/linux && ln -sf ../../../../linux-sparse/include/xen/public/*.h . )
make libxenctrl.a libxenctrl.so libxenctrl.so.3.0 libxenctrl.so.3.0.0 libxenguest.a libxenguest.so libxenguest.so.3.0 libxenguest.so.3.0.0
make[2]: Entering directory `/home/post4pavan/Desktop/xen21/tools/libxc'
make[2]: `libxenctrl.a' is up to date.
make[2]: `libxenctrl.so' is up to date.
make[2]: `libxenctrl.so.3.0' is up to date.
make[2]: `libxenctrl.so.3.0.0' is up to date.
make[2]: `libxenguest.a' is up to date.
/opt/freescale/usr/local/gcc-4.3.3-glibc-2.8-cs2009q1-203/arm-none-linux-gnueabi/bin/arm-none-linux-gnueabi-gcc -O2 -fomit-frame-pointer -DNDEBUG -Wall -Wstrict-prototypes -mapcs -Wdeclaration-after-statement  -D__XEN_INTERFACE_VERSION__=0x00030101 -Werror -fno-strict-aliasing  -I. -Wp,-MD,.libxenguest.so.3.0.0.d   -L. -Wl,-soname -Wl,libxenguest.so.3.0 -shared -o libxenguest.so.3.0.0 xc_linux_build.opic xc_load_bin.opic xc_load_elf.opic xg_private.opic xc_load_aout9.opic xc_linux_restore.opic xc_linux_save.opic libxenctrl.so -lz -lxenctrl
/opt/freescale/usr/local/gcc-4.3.3-glibc-2.8-cs2009q1-203/arm-none-linux-gnueabi/bin/../lib/gcc/arm-none-linux-gnueabi/4.3.3/../../../../arm-none-linux-gnueabi/bin/ld: cannot find -lz
collect2: ld returned 1 exit status
make[2]: *** [libxenguest.so.3.0.0] Error 1
make[2]: Leaving directory `/home/post4pavan/Desktop/xen21/tools/libxc'
make[1]: *** [build] Error 2
make[1]: Leaving directory `/home/post4pavan/Desktop/xen21/tools/libxc'
make: *** [all] Error 2