# FindBLAS

Find Basic Linear Algebra Subprograms (BLAS) library

This module finds an installed Fortran library that implements the BLAS linear-algebra interface (see http://www.netlib.org/blas/). The list of libraries searched for is taken from the `autoconf` macro file, `acx_blas.m4` (distributed at http://ac-archive.sourceforge.net/ac-archive/acx_blas.html).

## Input Variables

The following variables may be set to influence this module’s behavior:

`BLA_STATIC`

  if `ON` use static linkage

`BLA_VENDOR`

  If set, checks only the specified vendor, if not set checks all the possibilities. List of vendors valid in this module:

  - Goto

  - OpenBLAS

  - FLAME

  - ATLAS PhiPACK

  - CXML

  - DXML

  - SunPerf

  - SCSL

  - SGIMATH

  - IBMESSL

  - Intel10_32 (intel mkl v10 32 bit)

  - Intel10_64lp (intel mkl v10+ 64 bit, threaded code, lp64 model)

  - Intel10_64lp_seq (intel mkl v10+ 64 bit, sequential code, lp64 model)

  - Intel10_64ilp (intel mkl v10+ 64 bit, threaded code, ilp64 model)

  - Intel10_64ilp_seq (intel mkl v10+ 64 bit, sequential code, ilp64 model)

  - Intel (obsolete versions of mkl 32 and 64 bit)

  - ACML

  - ACML_MP

  - ACML_GPU

  - Apple

  - NAS

  - Generic

`BLA_F95`

  if `ON` tries to find the BLAS95 interfaces

`BLA_PREFER_PKGCONFIG`

  if set `pkg-config` will be used to search for a BLAS library first and if one is found that is preferred

## Result Variables

This module defines the following variables:

`BLAS_FOUND`

  library implementing the BLAS interface is found

`BLAS_LINKER_FLAGS`

  uncached list of required linker flags (excluding `-l` and `-L`).

`BLAS_LIBRARIES`

  uncached list of libraries (using full path name) to link against to use BLAS (may be empty if compiler implicitly links BLAS)

`BLAS95_LIBRARIES`

  uncached list of libraries (using full path name) to link against to use BLAS95 interface

`BLAS95_FOUND`

  library implementing the BLAS95 interface is found

Note

C or CXX must be enabled to use Intel Math Kernel Library (MKL)

For example, to use Intel MKL libraries and/or Intel compiler:

    set(BLA_VENDOR Intel10_64lp)
    find_package(BLAS)

## Hints

Set `MKLROOT` environment variable to a directory that contains an MKL installation.