Add license (GNU GPLv3+)

1 files changed, 18 insertions, 0 deletions

diff --git a/Makefile b/Makefile
index 7e3a9a6..d841034 100644
--- a/Makefile
+++ b/Makefile
@@ -1,3 +1,21 @@
+# Copyright (c) 2021  Teddy Wing
+#
+# This file is part of Incdec.
+#
+# Incdec 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.
+#
+# Incdec 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 Incdec. If not, see <https://www.gnu.org/licenses/>.
+
+
 .PHONY: all
 all: incdec