-- Automake <http://www.gnu.org/software/automake/>
-- Autoconf <http://www.gnu.org/software/autoconf/>
-- Tar <http://www.gnu.org/software/tar/>
-- Wget <http://www.gnu.org/software/wget/>
+- Automake <https://www.gnu.org/software/automake/>
+- Autoconf <https://www.gnu.org/software/autoconf/>
+- Tar <https://www.gnu.org/software/tar/>
+- Wget <https://www.gnu.org/software/wget/>