* m4/regex.m4: Update the description of the configure-time option,

[gnulib.git] / m4 / regex.m4

diff --git a/m4/regex.m4 b/m4/regex.m4
index 4b421bd..b8d5b1e 100644 (file)
--- a/m4/regex.m4
+++ b/m4/regex.m4
@@ -1,4 +1,4 @@
-#serial 45
+#serial 46
 
 # Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2003, 2004, 2005,
 # 2006, 2007 Free Software Foundation, Inc.
@@ -18,9 +18,12 @@ AC_DEFUN([gl_REGEX],
 
   AC_ARG_WITH([included-regex],
     [AC_HELP_STRING([--without-included-regex],
-                   [don't compile regex; this is the default on
+                   [don't compile regex; this is the default on 32-bit
                     systems with recent-enough versions of the GNU C
-                    Library (use with caution on other systems)])])
+                    Library (use with caution on other systems).
+                    On systems with 64-bit ptrdiff_t and 32-bit int,
+                    --with-included-regex is the default, in case
+                    regex functions operate on very long strings (>2GB)])])
 
   case $with_included_regex in #(
   yes|no) ac_use_included_regex=$with_included_regex