#include "..." search starts here: #include <...> search starts here: /usr/include/w32api /usr/lib/gcc-lib/i686-pc-cygwin/3.2/include /usr/include End of search list. client.c:10:21: stdio.h : No such file or directory client.c:11:22: string.h : No such file or directory client.c:12:25: sys/types.h : No such file or directory client.c:13:26: sys/socket.h : No such file or directory client.c:14:22: sys/un.h : No such file or directory client.c: In function `main': client.c:20: storage size of `addr' isn't known client.c:31: `PF_UNIX' undeclared (first use in this function) client.c:31: (Each undeclared identifier is reported only once client.c:31: for each function it appears in.) client.c:31: `SOCK_STREAM' undeclared (first use in this function) client.c:44: `AF_UNIX' undeclared (first use in this function) client.c:60: `stdin' undeclared (first use in this function)