See attached build log.
(Please do not complain about the need for looking at the build log until you can provide an easy way to open bugs with the correct data picked out of a tinderbox log. Thanks.)
Created attachment 243039 [details]
We are aware that pobably all Module-Build packages do not respect LDFLAGS.
The problem is tracked in bug 233354
*** This bug has been marked as a duplicate of bug 233354 ***