CYGWIN: fix build.

Signed-off-by: Carlo Bramini <carlo_bramini@users.sourceforge.net>
Reviewed-by: Jakub Jelen <jjelen@redhat.com>
(cherry picked from commit e2986003039e1fb7f2762e4dbc5902dce0358f4a)

Author: carlo-bramini

src/misc.c

@@ -1971,7 +1971,7 @@ char *ssh_strreplace(const char *src, const char *pattern, const char *replace)
  */
 char *ssh_strerror(int err_num, char *buf, size_t buflen)
 {
-#if defined(__linux__) && defined(__GLIBC__) && defined(_GNU_SOURCE)
+#if ((defined(__linux__) && defined(__GLIBC__)) || defined(__CYGWIN__)) && defined(_GNU_SOURCE)
     /* GNU extension on Linux */
     return strerror_r(err_num, buf, buflen);
 #else
@@ -1989,7 +1989,7 @@ char *ssh_strerror(int err_num, char *buf, size_t buflen)
         buf[0] = '\0';
     }
     return buf;
-#endif /* defined(__linux__) && defined(__GLIBC__) && defined(_GNU_SOURCE) */
+#endif /* ((defined(__linux__) && defined(__GLIBC__)) || defined(__CYGWIN__)) && defined(_GNU_SOURCE) */
 }
 
 /**

src/ttyopts.c

@@ -264,7 +264,9 @@ encode_termios_opts(struct termios *attr, unsigned char *buf, size_t buflen)
     SSH_ENCODE_LOCAL_OPT(IEXTEN)
     SSH_ENCODE_LOCAL_OPT(ECHOCTL)
     SSH_ENCODE_LOCAL_OPT(ECHOKE)
+#ifdef PENDIN
     SSH_ENCODE_LOCAL_OPT(PENDIN)
+#endif
 #undef SSH_ENCODE_LOCAL_OPT
 
 #define SSH_ENCODE_CC_OPT(opt) SSH_ENCODE_OPT(TTY_OP_##opt, attr->c_cc[opt])