try Building OPENBLAS on windows (failing)

[basel45rob]

Hi , I am trying to compile with OPENBLAS support on windows and just cant seem to get it right.

the install instructions in the readme are not working for me.

I've set the env args in powershell :

$Env:LLAMA_OPENBLAS = "1"
$Env:CMAKE_ARGS="-DLLAMA_OPENBLAS=on"
$Env:CMAKE_ARGS="-DBLAS_LIBRARIES=path/openblas/include/cblas.h"

then ran : "python setup.py install"

using: set LLAMA_OPENBLAS = "1" | set DBLAS_LIBRARIES=psth/openblas/include/cblas.h" | etc.
also works.
And the blas lib is recognized but it wont build with blas support.

I tried compiling llama.cpp with openblas and then putting that in vendor but it wont build.
If I start fresh (delete - clone repo again) then it finds the openblas lib and there is a llama.dll file but when running llama-cpp-python BLAS =0. like the lib wasn't used in compiling.

I saw that you need to add "openblas" in the cmakefiles.text - in the private extra libs. after adding it, compile error is:

(exit code 1181) with the following output:
LINK : fatal error LNK1181: cannot open input file 'openblas.lib'
ninja: build stopped: subcommand failed.

copying to root folder didnt work...what am I missing?

any help would be appreciated. Thanks

putting the llama.cpp windows instructions for openblas which worked:

On Windows:

Download the latest fortran version of [w64devkit](https://github.com/skeeto/w64devkit/releases).

Download the latest version of [OpenBLAS for Windows](https://github.com/xianyi/OpenBLAS/releases).

Extract w64devkit on your pc.

From the OpenBLAS zip that you just downloaded copy libopenblas.a, located inside the lib folder, inside w64devkit\x86_64-w64-mingw32\lib.

From the same OpenBLAS zip copy the content of the include folder inside w64devkit\x86_64-w64-mingw32\include.

Run w64devkit.exe.

Use the cd command to reach the llama.cpp folder.

From here you can run:

make LLAMA_OPENBLAS=1