AIX compile error about passh HOT 10 CLOSED

#include <stropts.h>

$ diff -u passh.c.original passh.c
--- passh.c.original    2020-03-20 05:37:40.000000000 +0200
+++ passh.c     2020-05-20 09:19:04.000000000 +0200
@@ -43,6 +43,7 @@
 #include <regex.h>
 #include <time.h>
 #include <fcntl.h>
+ #include <stropts.h>
 #include <sys/ioctl.h>
 #include <sys/select.h>
 #include <sys/types.h>

$ make
        gcc -O  passh.c -o passh
passh.c:360:18: warning: 'struct winsize' declared inside parameter list will not be visible outside of this definition or declaration
     const struct winsize *slave_winsize)
                  ^~~~~~~
In file included from /usr/include/stropts.h:30,
                 from passh.c:46:
passh.c: In function 'pty_fork':
passh.c:411:28: error: invalid application of 'sizeof' to incomplete type 'struct winsize'
             if (ioctl(fds, TIOCSWINSZ, slave_winsize) < 0)
                            ^~~~~~~~~~
passh.c: In function 'big_loop':
passh.c:728:28: error: storage size of 'ttysize' isn't known
             struct winsize ttysize;
                            ^~~~~~~
In file included from /usr/include/stropts.h:30,
                 from passh.c:46:
passh.c:740:31: error: invalid application of 'sizeof' to incomplete type 'struct winsize'
             if (ioctl(ourtty, TIOCGWINSZ, &ttysize) == 0) {
                               ^~~~~~~~~~
passh.c:741:34: error: invalid application of 'sizeof' to incomplete type 'struct winsize'
                 ioctl(g.fd_ptym, TIOCSWINSZ, &ttysize);
                                  ^~~~~~~~~~
passh.c: In function 'main':
passh.c:929:20: error: storage size of 'size' isn't known
     struct winsize size;
                    ^~~~
In file included from /usr/include/stropts.h:30,
                 from passh.c:46:
passh.c:942:33: error: invalid application of 'sizeof' to incomplete type 'struct winsize'
         if (ioctl(STDIN_FILENO, TIOCGWINSZ, (char *) &size) < 0)
                                 ^~~~~~~~~~
make: 1254-004 The error code from the last command is 1.


Stop.

$ make
        gcc -O  passh.c -o passh
        rm passh
Target ".PHONY" is up to date.

$ make clean; make
        rm passh
rm: passh: A file or directory in the path name does not exist.
make: 1254-004 The error code from the last command is 2.


Stop.
        cc -O  passh.c -o passh
cc: not found

make: 1254-004 The error code from the last command is 1.


Stop.

$ echo "CC = gcc" >> Makefile

$ make
        gcc -O  passh.c -o passh
Target "all" is up to date.

$ ./passh -h
Usage: passh [OPTION]... COMMAND...

  -c <N>          Send at most <N> passwords (0 means infinite. Default: 0)
  -C              Exit if prompted for the <N+1>th password
  -h              Help
  -i              Case insensitive for password prompt matching
  -n              Nohup the child (e.g. used for `ssh -f')
  -p <password>   The password (Default: `password')
  -p env:<var>    Read password from env var
  -p file:<file>  Read password from file
  -P <prompt>     Regexp (BRE) for the password prompt
                  (Default: `[Pp]assword: \{0,1\}$')
  -l <file>       Save data written to the pty
  -L <file>       Save data read from the pty
  -t <timeout>    Timeout waiting for next password prompt
                  (0 means no timeout. Default: 0)
  -T              Exit if timed out waiting for password prompt
  -y              Auto answer `(yes/no)?' questions

Report bugs to Clark Wang <[email protected]>

$ CC=gcc make
        gcc -O  passh.c -o passh
Target "all" is up to date.