Add license (GNU GPLv3+)

1 files changed, 18 insertions, 0 deletions

diff --git a/Makefile b/Makefile
index cc12c71..c7ac63a 100644
--- a/Makefile
+++ b/Makefile
@@ -1,3 +1,21 @@
+# Copyright (c) 2023  Teddy Wing
+#
+# This file is part of XFDF.
+#
+# XFDF is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# XFDF is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with XFDF. If not, see <https://www.gnu.org/licenses/>.
+
+
 LISP := sbcl
 
 .PHONY: test