root@gonzalo-desktop:/home/gonzalo/ltsp/sysvinit-2.86.ds1/src# make shutdown   
gcc -Wall -O2 -fomit-frame-pointer -D_GNU_SOURCE   -c -o dowall.o dowall.c
gcc -Wall -O2 -fomit-frame-pointer -D_GNU_SOURCE   -c -o shutdown.o shutdown.c
gcc -c -Wall -O2 -fomit-frame-pointer -D_GNU_SOURCE utmp.c
gcc -s -static -o shutdown dowall.o shutdown.o utmp.o
dowall.o: In function `wall':
dowall.c:(.text+0x16d): warning: Using 'getpwuid' in statically linked applications requires at runtime the shared libraries from the glibc version used for linking