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Installing LAPACK and BLAS Libraries for C on Mac OS

Tags:

c

installation

lapack

blas

I wanted instructions/websites from where I could download LAPACK and BLAS libraries for use in my C programs. I also wanted to know how I could link these to the gcc compiler from terminal.

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204 Avatar asked Jun 30 '16 04:06

204

People also ask

Where is Lapack on Mac?

Lapack is actually included in Accelerate library provided by Apple. You can include it in the header file of your C++ source code.

How do you check if Blas is installed?

The first step is to determine where is the BLAS library on your system. Use the command "locate libblas.so" to find the library. If several results are reported, look for the version under /usr/lib/ or /usr/lib64 or something similar to that path.

Do I need to install LAPACK on macOS?

Newer versions of macOS, including 10.11, ship with an implementation of LAPACK included in vecLib, which is included in macOS. So if your software is vecLib-aware, you may not need to install LAPACK at all. If you need to install a separate LAPACK, it's now available as a Homebrew formula in Homebrew core.

Is Blas and LAPACK installed on your system?

Congratulation, you’ve installed BLAS and LAPACK on your systems! Note: when using C++, do not forget to point out your search directory for header files with option “-I”, and add your library path with “-L” for libraries with “-l” if the search paths for the header files and libraries are not included. Any comment or question is welcome.

Do I need to install LAPACK in homebrew core?

So if your software is vecLib-aware, you may not need to install LAPACK at all. If you need to install a separate LAPACK, it's now available as a Homebrew formula in Homebrew core. So brew install lapack will work now.

Does LAPACK handle Nan and INF?

# # Note: During a regular execution, LAPACK might create NaN and Inf # and handle these quantities appropriately. As a consequence, one # should not compile LAPACK with flags such as -ffpe-trap=overflow.

1 Answers

You can use Homebrew to take care of this for you. Just install Homebrew and then:

brew install openblas
brew install lapack

But you don't even need that: macOS already ships with BLAS and LAPACK implementations in its vecLib framework. So if your software is vecLib-aware, or you pass it the right compiler options, you don't even need to install a separate BLAS and LAPACK.

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Andrew Janke Avatar answered Sep 20 '22 20:09

Andrew Janke
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