Hi, > -lrt is required in LDLIBS for older libc that had all the posix > realtime outside of the glibc.so, and it's harmless on newer glibc so > for the time being we just need -lrt in LDLIBS for quite a lot of > testcases... I mean I'd put in the Makefile: CFLAGS += -pthread LDLIBS += -lrt Kind regards, Petr