Ruby 2.7 will be able to build parallelly

Tue Nov 19 03:45:08 UTC 2019

Hi Ruby folks,

I would like to let you know the issue Ruby cannot be built parallelly
has been fixed in upstream [1][2]. When creating lang/ruby27 port in
the future, MAKE_JOBS_UNSAFE=yes can be removed. Please keep in mind
that.

BTW, older versions of Ruby should be able to build parallelly if using
gmake instead.

[1] https://bugs.ruby-lang.org/issues/16331
[2] https://github.com/ruby/ruby/commit/faa4f4f23fbb6b48b158cc38d9b509fd00838976

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