Improve configure --help text for wide ints

* configure.ac (wide-int): Clarify user-level advantages and
disadvantages.

diff --git a/configure.ac b/configure.ac
index 94ee9b7aa2b9e25f73ba7e826d56f893f34449fd..cfd591c7b865dfded47b34c43d1392c29c2ef151 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -316,7 +316,7 @@ this option's value should be 'yes', 'no', 'lucid', 'athena', 'motif', 'gtk',
          with_x_toolkit=$val
 ])
 
-OPTION_DEFAULT_OFF([wide-int], [prefer wide Emacs integers (typically 62-bit)])
+OPTION_DEFAULT_OFF([wide-int], [prefer wide Emacs integers (typically 62-bit); allows buffer and string size up to 2GB on 32-bit hosts, at the cost of 10% to 30% slowdown of Lisp interpreter and larger memory footprint])
 if test "$with_wide_int" = yes; then
   AC_DEFINE([WIDE_EMACS_INT], 1, [Use long long for EMACS_INT if available.])
 fi