Fatal error while compiling with aarch64-gnu-linux-gcc

[Quicktimer]

Hello,

I have observed a fatal error when I try to compile the source for my DUt with aarch64-gnu-linux-gcc.
wfa_dut.c:29:21: fatal error: pthread.h: No such file or directory
#include <pthread.h>
^
compilation terminated.
: recipe for target 'wfa_dut.o' failed
make: *** [wfa_dut.o] Error 1