Add sanity checks for old localedata/crypt add-ons

[Andreas Jaeger <aj at suse dot de>]

Some users can't read the documentation and try to use the old
localedata or crypt add-ons - and fail miserably with the current
glibc.  Here's a patch that adds a simple sanity check.

Ok to commit?

Andreas

2001-01-06  Andreas Jaeger  <aj@suse.de>

	* configure.in: Check for old add-ons that shouldn't be used with
	current glibc anymore.

============================================================
Index: configure.in
--- configure.in	2000/12/05 03:29:32	1.299
+++ configure.in	2001/01/06 10:27:57
@@ -148,6 +148,21 @@
 add_ons_pfx=
 if test x"$add_ons" != x; then
   for f in $add_ons; do
+    # Some sanity checks
+    if test "$f" = "crypt"; then
+      AC_MSG_ERROR([
+*** It seems that you're using an old \`crypt' add-on.  crypt is now
+*** part of glibc and using the old add-on will not work with this
+*** release.  Start again with fresh sources and without the old
+*** \`crypt' add-on.])
+    fi
+    if test "$f" = "localedata"; then
+      AC_MSG_ERROR([
+*** It seems that you're using an old \`localedata' add-on.  localedata
+*** is now part of glibc and using the old add-on will not work with
+*** this release.  Start again with fresh sources and without the old
+*** \`localedata' add-on.])
+    fi
     # Test whether such a subdir really exists.
     if test -d $srcdir/$f; then
       add_ons_pfx="$add_ons_pfx $f/"

-- 
 Andreas Jaeger
  SuSE Labs aj@suse.de
   private aj@arthur.inka.de
    http://www.suse.de/~aj