<sys/wait.h> defines, since our code does not use waitpid(). We
also fail to declare wait() and waitpid(). */
+#ifndef WIFEXITED
#define WIFEXITED(w) (((w)&0377) == 0)
+#endif
+
+#ifndef WIFSIGNALED
#define WIFSIGNALED(w) (((w)&0377) != 0177 && ((w)&~0377) == 0)
+#endif
+
+#ifndef WIFSTOPPED
+#ifdef IBM6000
+
+/* Unfortunately, the above comment (about being compatible in all Unix
+ systems) is not quite correct for AIX, sigh. And AIX 3.2 can generate
+ status words like 0x57c (sigtrap received after load), and gdb would
+ choke on it. */
+
+#define WIFSTOPPED(w) ((w)&0x40)
+
+#else
#define WIFSTOPPED(w) (((w)&0377) == 0177)
+#endif
+#endif
-#define WEXITSTATUS(w) ((w) >> 8) /* same as WRETCODE */
+#ifndef WEXITSTATUS
+#define WEXITSTATUS(w) (((w) >> 8) & 0377) /* same as WRETCODE */
+#endif
+
+#ifndef WTERMSIG
#define WTERMSIG(w) ((w) & 0177)
-#define WSTOPSIG(w) ((w) >> 8)
+#endif
+
+#ifndef WSTOPSIG
+#define WSTOPSIG WEXITSTATUS
+#endif
/* These are not defined in POSIX, but are used by our programs. */
#define WAITTYPE int
+#ifndef WCOREDUMP
#define WCOREDUMP(w) (((w)&0200) != 0)
+#endif
+
+#ifndef WSETEXIT
#define WSETEXIT(w,status) ((w) = (0 | ((status) << 8)))
+#endif
+
+#ifndef WSETSTOP
#define WSETSTOP(w,sig) ((w) = (0177 | ((sig) << 8)))
+#endif
+