From owner-freebsd-ports@freebsd.org  Tue Jul 21 00:49:10 2015
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Subject: Does OpenMP (iomp5) work for clang-devel?
From: Dennis Glatting <freebsd@pki2.com>
To: ports@freebsd.org
Date: Mon, 20 Jul 2015 17:48:58 -0700
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I can't seem to get this working and it appears not to emit code. I have
libiomp5 installed and I compile specifying:

 clang++-devel -fopenmp=libiomp5 ...

And the compiler says:

 clang: warning: argument unused during compilation: '-fopenmp=libiomp5'


Is there a compile-time test involved somewhere, perhaps in llvm build?
Should /usr/local/llvm-devel/lib/ be in /etc/ld.so.conf? (That doesn't
seem to help).