Attached patch solves the problem
Created attachment 22986 [details, diff] cdrdao-1.1.7-r3.ebuild.diff
Whoops... it doesn't. I'll look into this further.
Created attachment 22991 [details, diff] cdrdao-1.1.7-r3.ebuild.diff It turned out that it was unrelated to parallel make. What I needed to get it build was this.
I saw this problem once before. Added to the ebuild.