The website [1] states that the released version can be downloaded from
the cairo release area [2], which also features a sha1 hash, but only
provides xz archives (no gz).
[1]: https://www.cairographics.org/cairomm/
[2]: https://www.cairographics.org/releases/
Signed-off-by: Daniel Lang <dalang@gmx.at>
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>