1 files changed, 24 insertions, 0 deletions
diff --git a/util.h b/util.h
index 7dcf9ceab5..1c2c5552e7 100644
--- a/util.h
+++ b/util.h
@@ -6,3 +6,27 @@
  *    License or the Artistic License, as specified in the README file.
  *
  */
+
+#ifdef VMS
+#  define PERL_FILE_IS_ABSOLUTE(f) \
+	(*(f) == '/'							\
+	 || (strchr(f,':')						\
+	     || ((*(f) == '[' || *(f) == '<')				\
+		 && (isALNUM((f)[1]) || strchr("$-_]>",(f)[1])))))
+
+#else		/* !VMS */
+#  ifdef WIN32
+#    define PERL_FILE_IS_ABSOLUTE(f) \
+	(*(f) == '/'							\
+	 || ((f)[0] && (f)[1] == ':')		/* drive name */	\
+	 || ((f)[0] == '\\' && (f)[1] == '\\'))	/* UNC path */
+#  else		/* !WIN32 */
+#    ifdef DOSISH
+#      define PERL_FILE_IS_ABSOLUTE(f) \
+	(*(f) == '/'							\
+	 || ((f)[0] && (f)[1] == ':'))		/* drive name */
+#    else	/* !DOSISH */
+#      define PERL_FILE_IS_ABSOLUTE(f)	(*(f) == '/')
+#    endif	/* DOSISH */
+#  endif	/* WIN32 */
+#endif		/* VMS */