[PATCH] [OPENMP] Allow to disable OpenMP support and link libgomp

[Ed Maste]

I'm curious - what is the use case for the old behaviour?

AFAICT if the user sets `Enable OpenMP support` `OFF` they'll get a compiler that links against `libgomp` when `-fopenmp` is specified, but doesn't produce a useful openmp executable?


================
Comment at: test/OpenMP/linking_no_openmp.c:2
@@ +1,3 @@
+// Test the that the driver produces reasonable linker invocations with
+// -fopenmp or -fopenmp|libgomp.
+// REQUIRES: no_openmp
----------------
`-fopenmp=libgomp`?

http://reviews.llvm.org/D9875

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