diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..6f3a9ab
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,2 @@
+/libunwind-13.0.0.src.tar.xz.sig
+/libunwind-13.0.0.src.tar.xz
diff --git a/sources b/sources
new file mode 100644
index 0000000..10a080b
--- /dev/null
+++ b/sources
@@ -0,0 +1,2 @@
+SHA512 (libunwind-13.0.0.src.tar.xz.sig) = 60cc04a335cf69dfcdf5d4e10053f9e46cf40521a322689678dd8a56500e5297ca4df73c2c5beaf52ea6bc3abf692b6eca1ecb9b6ee9b0e609ae459d6ef687d8
+SHA512 (libunwind-13.0.0.src.tar.xz) = 403ee8a34adb98fbcbba31d374cfffb974b82edb598b8b1d61203f8673a4c4e09704e4b9c78f87ff3b78192c82a9bfa5fa1428519cbb4209652baf767f4af2c1