Better --enable-zlib description

--HG--
branch : 1.7

diff --git a/INSTALL b/INSTALL
index c626c72bc2fc7eac9929c24fe6271712aa79248a..de29fdc67cf1a448f10eabea09326a03953b25bb 100644 (file)
--- a/INSTALL
+++ b/INSTALL
@@ -618,12 +618,16 @@ The following options are also configurable at runtime:
        if the executable is simply not in the user's path, sudo will tell
        the user that they are not allowed to run it, which can be confusing.
 
-  --enable-zlib[=DIR]
-       Enable the use of the zlib compress library when storing
-       I/O log files.  If specified, DIR is the base directory
-       containing the zlib include and lib directories.  By default
-       zlib is used if it is found on the system and I/O logging
-       support is not disabled.
+  --enable-zlib[=location]
+        Enable the use of the zlib compress library when storing
+        I/O log files.  If specified, location is the base directory
+        containing the zlib include and lib directories.  The special
+        values "system" and "builtin" can be used to indicate that
+        the system version of zlib should be used or that the version
+        of zlib shipped with sudo should be used instead.
+        If this option is not specified, configure will use the
+        system zlib if it is present and I/O logging support has
+        not been disabled.
 
   --disable-zlib
         Disable the use of the zlib compress library when storing