Don't use `-Werror' by default.

* configure.ac (GUILE_ERROR_ON_WARNING): Default to "no".

* Makefile.am (DISTCHECK_CONFIGURE_FLAGS): New variable.

* NEWS: Update.

Makefile.am

@@ -44,6 +44,8 @@ DISTCLEANFILES = check-guile.log
 # `$(PACKAGE)-$(PACKAGE_VERSION)' by default, which is wrong.)
 distdir = $(PACKAGE_TARNAME)-$(PACKAGE_VERSION)
 
+DISTCHECK_CONFIGURE_FLAGS = --enable-error-on-warning
+
 dist-hook: gen-ChangeLog
 
 clean-local:

NEWS

@@ -149,6 +149,10 @@ procedure. Pass the -Warity-mismatch on the `guile-tools compile'
 command line, or add `#:warnings '(arity-mismatch)' to your `compile'
 or `compile-file' invocation.
 
+** Guile is now built without `-Werror' by default
+
+Use the `--enable-error-on-warning' configure option to enable it.
+
 ** And of course, the usual collection of bugfixes
  
 Interested users should see the ChangeLog for more information.

configure.ac

@@ -96,7 +96,7 @@ AC_DEFINE_UNQUOTED([HOST_TYPE], ["$host"],
 #
 #--------------------------------------------------------------------
 
-GUILE_ERROR_ON_WARNING="yes"
+GUILE_ERROR_ON_WARNING="no"
 
 AC_ARG_ENABLE(error-on-warning,
   [  --enable-error-on-warning    treat compile warnings as errors],