Issue #9465 has been reported by Tomoyuki Chikanaga.

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Backport #9465: backport r44756 (support GNU make on FreeBSD/DragonflyBSD)
https://bugs.ruby-lang.org/issues/9465

* Author: Tomoyuki Chikanaga
* Status: Assigned
* Priority: Normal
* Assignee: Tomoyuki Chikanaga
* Category: 
* Target version: 
* ruby -v: 2.0.0-p247
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see https://github.com/sstephenson/ruby-build/issues/496



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