Tird try at github CI setup.

.github/workflows/autotools.yml

@@ -26,7 +26,7 @@ jobs:
         run: brew install automake pkg-config libtool libogg
 
       - name: Install Linux dependencies
-        if: !startsWith(matrix.os,'macos')
+        if: startsWith(matrix.os,'ubuntu')
         run: apt install automake pkgconf libtool libogg-dev
 
       - name: configure