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- #include "s-irix3-3.h"
-
- #define USG5_3
-
- /* Define HAVE_ALLOCA to say that the system provides a properly
- working alloca function and it should be used. */
- #define HAVE_ALLOCA
- #undef C_ALLOCA
- #define alloca __builtin_alloca
-
- /* use K&R C */
- #define C_SWITCH_MACHINE -cckr
-
- /* SGI has all the fancy wait stuff, but we can't include sys/wait.h
- because it defines BIG_ENDIAN and LITTLE_ENDIAN (ugh!.) Instead
- we'll just define WNOHANG right here.
- (An implicit decl is good enough for wait3.) */
-
- #define WNOHANG 0x1
-
- /* No need to use sprintf to get the tty name--we get that from _getpty. */
- #define PTY_TTY_NAME_SPRINTF
- /* No need to get the pty name at all. */
- #define PTY_NAME_SPRINTF
- #ifdef emacs
- char *_get_pty();
- #endif
- /* We need only try once to open a pty. */
- #define PTY_ITERATION
- /* Here is how to do it. */
- /* It is necessary to prevent SIGCHLD signals within _getpty.
- So we block them. */
- #define PTY_OPEN \
- { \
- int mask = sigblock (sigmask (SIGCHLD)); \
- char *name = _getpty (&fd, O_RDWR | O_NDELAY, 0600, 0); \
- sigsetmask(mask); \
- if (name == 0) \
- return -1; \
- if (fd < 0) \
- return -1; \
- if (fstat (fd, &stb) < 0) \
- return -1; \
- strcpy (pty_name, name); \
- }
-