Public bug reported:

Please don't use openblas cmake builds. They are still experimental as
is stated during the build process:

CMake Warning at CMakeLists.txt:46 (message):
  CMake support is experimental.  This will not produce the same Makefiles
  that OpenBLAS ships with.  Only x86 support is currently available.

There are still bugs with the cmake build. I just found one that causes
DTRMM to give wrong answers:

It took me quite a long time to figure out that this was a bug in blas
and not in my own code. I request that you stick with standard builds
without cmake until the cmake support is not experimental any more. So
people can at least use openblas without having to worry about really
odd bugs.

** Affects: openblas (Ubuntu)
     Importance: Undecided
         Status: New

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  Don't use openblas cmake builds

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