CFLAGS=-D_POSIX_SOURCE STDCFLAGS= STDCFLAGS=-D_POSIX_SOURCE STDCFLAGS=-D_POSIX_SOURCE STDCFLAGS=-D_POSIX_SOURCE STD_CFLAGS= STD_CFLAGS=-D_POSIX_SOURCE STD_CFLAGS=-D_POSIX_SOURCE STD_CFLAGS=-D_POSIX_SOURCE