https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116730
--- Comment #18 from Hime Haieto <himehaieto at gmail dot com> --- (In reply to Andreas Schwab from comment #17) > No, top_builddir is wrong. The rule wants to link to a file in the _source_ > directory. I think you may be right...I was thinking about what's to the left of the colon (i.e., the file you're making a rule to produce). I don't normally create raw makefile rules myself, that's what I rely on autotools for. :) The other comment I made about it not being the core issue still stands though.