/opt/freeware/bin/gcc -maix64 -O2 -DHAVE_CONFIG_H   -I../src -I../src -I../include -I/opt/freeware/include  -g -O2 -MT scp_write_nonblock.o -MD -MP -MF .deps/scp_write_nonblock.Tpo -c -o scp_write_nonblock.o scp_write_nonblock.c

scp_write_nonblock.c: In function 'waitsocket':
scp_write_nonblock.c:33:20: error: storage size of 'timeout' isn't known
   33 |     struct timeval timeout;
      |                    ^~~~~~~
scp_write_nonblock.c:35:5: error: unknown type name 'fd_set'
   35 |     fd_set fd;
      |     ^~~~~~
scp_write_nonblock.c:36:5: error: unknown type name 'fd_set'
   36 |     fd_set *writefd = NULL;
      |     ^~~~~~
scp_write_nonblock.c:37:5: error: unknown type name 'fd_set'
   37 |     fd_set *readfd = NULL;
      |     ^~~~~~
scp_write_nonblock.c:43:5: warning: implicit declaration of function 'FD_ZERO'; did you mean 'NZERO'? [-Wimplicit-function-declaration]
   43 |     FD_ZERO(&fd);
      |     ^~~~~~~
      |     NZERO
scp_write_nonblock.c:45:5: warning: implicit declaration of function 'FD_SET' [-Wimplicit-function-declaration]
   45 |     FD_SET(socket_fd, &fd);
      |     ^~~~~~
scp_write_nonblock.c:56:10: warning: implicit declaration of function 'select' [-Wimplicit-function-declaration]
   56 |     rc = select((int)(socket_fd + 1), readfd, writefd, NULL, &timeout);
      |          ^~~~~~
gmake: *** [Makefile:641: scp_write_nonblock.o] Error 1