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# hmatrix installation

This package requires [GHC 7.8](http://www.haskell.org/ghc), [cabal-install](http://www.haskell.org/haskellwiki/Cabal-Install) (available in the [Haskell Platform](http://hackage.haskell.org/platform)), and the development packages for BLAS/[LAPACK](http://www.netlib.org/lapack) and [GSL](http://www.gnu.org/software/gsl).

## Linux ##################################################

Ubuntu/Debian:

    $ sudo apt-get install libgsl0-dev liblapack-dev libatlas-base-dev
    $ cabal update
    $ cabal install hmatrix-tests

Other distributions may require additional libraries. They can be given in a **--configure-option**.

Adrian Victor Crisciu has developed an [installation method](http://comments.gmane.org/gmane.comp.lang.haskell.glasgow.user/24976) for systems
which don't provide shared lapack libraries.

## Mac OS/X ###############################################

GSL must be installed via Homebrew or MacPorts.

Via Homebrew:

    $ brew install gsl
    $ cabal install hmatrix

Via MacPorts:

    $ sudo port install gsl +universal
    $ cabal install hmatrix

(Contributed by Heinrich Apfelmus, Torsten Kemps-Benedix and Ted Fujimoto).

## Windows ###############################################

### Stack-based build (prefered)

Similar should be build under other OSes, like Linux and OSX. This recipe is for stack 1.4.0 - tested and working.

1) 

	> stack setup

2) Download and unzip somewhere OpenBLAS http://www.openblas.net/

3) In MSYS2 console of Stack, i.e.: C:\Users\{User}\AppData\Local\Programs\stack\x86_64-windows\msys2-{version}\msys2_shell.bat

    > cd /.../OpenBLAS
    > pacman -Sy
    > pacman -S make perl gcc-fortran
    > make clean
    > make
    > make install

3) Then in normal Windows console for building hmatrix base lib (fill in user name, versions and check if paths are different on your machine):

    > stack install --flag hmatrix:openblas --extra-include-dirs=C:\Users\{User}\AppData\Local\Programs\stack\x86_64-windows\msys2-20150512\opt\OpenBLAS\include --extra-lib-dirs=C:\Users\{User}\AppData\Local\Programs\stack\x86_64-windows\msys2-20150512\opt\OpenBLAS\bin --extra-lib-dirs=C:\Users\{User}\AppData\Local\Programs\stack\x86_64-windows\msys2-20150512\usr\lib\gcc\x86_64-pc-msys\6.3.0\

### Cabal-based build
	 
(Not tested). It should be possible to install the new package hmatrix >= 0.16 using
the dlls contributed by Gilberto Camara available in [gsl-lapack-windows.zip][winpack].

1) > cabal update

2) Download and unzip [gsl-lapack-windows.zip][winpack] into a stable folder %GSL%

3.a) In a msys shell:

    $ cabal install hmatrix-0.13.1.0 --extra-lib-dir=${GSL} --extra-include-dirs=${GSL}

3.b) In a normal windows cmd:

     > cabal install --extra-lib-dir=%GSL% --extra-include-dirs=%GSL%

It may be necessary to put the dlls in the search path.

It is expected that a future version of the new hmatrix-gsl package can also be installed
using this method.

[winpack]: https://github.com/downloads/AlbertoRuiz/hmatrix/gsl-lapack-windows.zip

### Alternative Windows build

1) 

	> cabal update

2) Download and unzip somewhere OpenBLAS http://www.openblas.net/

3) In a normal Windows cmd:

    > cabal install --flags=openblas --extra-lib-dirs=C:\...\OpenBLAS\lib --extra-include-dirs=C:\...\OpenBLAS\include

## Tests ###############################################

After installation we can verify that the library works as expected:

    $ cabal install hmatrix-tests
    $ ghci
    > Numeric.LinearAlgebra.Tests.runTests 20
    +++ OK, passed 100 tests.
    +++ OK, passed 100 tests.
    ... etc...
    +++ OK, passed 100 tests.
    ------ some unit tests
    Cases: 71  Tried: 71  Errors: 0  Failures: 0