The attached patch fixes build with -j8 on a true 8-core SMP system. It has also been sent upstream. It would be very nice if it was applied, especially considering that autotools are being rebuilt already so this is all a speedup for multicore systems. Thanks, Diego
Created attachment 163971 [details, diff] libbtctl-0.10.0-parallelmake.patch
in tree without a bump. Thanks for the patch.