Issue #15835: Define PATH_MAX on HP-UX.
diff --git a/Include/osdefs.h b/Include/osdefs.h
index 90b430a..05c0c8e 100644
--- a/Include/osdefs.h
+++ b/Include/osdefs.h
@@ -29,6 +29,14 @@
#endif
/* Max pathname length */
+#ifdef __hpux
+#include <sys/param.h>
+#include <limits.h>
+#ifndef PATH_MAX
+#define PATH_MAX MAXPATHLEN
+#endif
+#endif
+
#ifndef MAXPATHLEN
#if defined(PATH_MAX) && PATH_MAX > 1024
#define MAXPATHLEN PATH_MAX
diff --git a/Python/fileutils.c b/Python/fileutils.c
index 501cb8c..976c04b 100644
--- a/Python/fileutils.c
+++ b/Python/fileutils.c
@@ -1,4 +1,5 @@
#include "Python.h"
+#include "osdefs.h"
#ifdef MS_WINDOWS
# include <windows.h>
#endif