Signed-off-by: Ian Jackson <ijackson@chiark.greenend.org.uk>
variables usually uppercase. Otherwise, use another syntax:
&_ => sub_dir_ or TOP_
variables usually uppercase. Otherwise, use another syntax:
&_ => sub_dir_ or TOP_
-&/ => sub/dir/ or nothing
+
+&/ => sub/dir/ or nothing
&=/ => sub/dir or .
&^ => $(top_srcdir)/sub/dir or $(top_srcdir)
&~ => $(abs_top_srcdir)/sub/dir or $(abs_top_srcdir)
&=/ => sub/dir or .
&^ => $(top_srcdir)/sub/dir or $(top_srcdir)
&~ => $(abs_top_srcdir)/sub/dir or $(abs_top_srcdir)