[Bug 243497] math/py-numpy: Fails to build with OpenBlas

[bugzilla-noreply at freebsd.org]

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=243497

--- Comment #20 from rsmith at xs4all.nl ---
(In reply to Steve Wills from comment #1)

The fact that I also have blas-3.5.0_6 installed (for Calculix) has a bearing
on this issue.

> pkg list blas-3.5.0_6
/usr/local/lib/libblas.a
/usr/local/lib/libblas.so
/usr/local/lib/libblas.so.2
/usr/local/lib/libblas_pic.a
/usr/local/share/licenses/blas-3.5.0_6/BSD3CLAUSE
/usr/local/share/licenses/blas-3.5.0_6/LICENSE
/usr/local/share/licenses/blas-3.5.0_6/catalog.mk

So when system_info.py is looking for cblas, it tries to compile and link a
program with both libcblas and libblas, see my original description.

Since I don't have cblas installed, the first compile fails.
The second compile *finds* libblas, (from blas-3.5.0_6) but it doesn't contain
the symbol (cblas_ddot) referenced in the test program, this produces a linker
error rather than a compilation error.

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