# HG changeset patch
# User Arne Babenhauserheide <arne_bab@web.de>
# Date 1624805239 -7200
#      Sun Jun 27 16:47:19 2021 +0200
# Node ID 85bb8f4c4a30528181a9d50f30cc6663ba0c7241
# Parent  71867b78220e17be16ca75607e22644b7d058ec7
_ and - actually must be forbidden for the makefile generation

diff --git a/conf.in b/conf.in
--- a/conf.in
+++ b/conf.in
@@ -280,6 +280,9 @@
         if [ -z "${PROJ##*$reqsubstr*}" ]; then
             # warn
             echo "WARNING: project name ${PROJ} could be unsafe: it contains the substring '$reqsubstr'." >&2
+            echo "please use a lowercase name without - or _"
+            # FIXME: the Makefile generation currently fails with these.
+            exit 1
         fi
     done
     if test ! x"${ARG_LANG}" = x""; then