Thank you.

I made a stupid mistake.

When I added “REQUIRES_LIBS = libpthread” into Makefile, I modified three Makefiles.

There are hello/Makefile, hello/server/Makefile, and hello/server/src/Makefile.

I tested one by one.

But I found I made a mistake.

At last try, I wrote REQUIRES = libpthread instead of REQUIRES_LIBS = libpthread on hello/server/src/Makefile.

After correcting my mistake, I can test pthread application.

Thank you! Marcus

Hyunchul Seok.