root@guanglin-Z68A-D3H-B3:~/libvmi-forked/tools/performance# make
gcc -Wall -Werror -O3 -Wp,-MD,.kern_sym.d  -o kern_sym kern_sym.c common.c -lxenctrl -lvmi -lm
gcc -Wall -Werror -O3 -Wp,-MD,.virt_addr.d  -o virt_addr virt_addr.c common.c -lxenctrl -lvmi -lm
virt_addr.c: In function ‘main’:
virt_addr.c:44:8: error: variable ‘paddr’ set but not used [-Werror=unused-but-set-variable]
cc1: all warnings being treated as errors
make: *** [virt_addr] Error 1