Fix for shared library not found and compile issues in Windows

[sujeendran]

I noticed that the library .dll file that gets installed in python site-packages location is actually libllama.dll while it is trying to look for llama.dll in the code in windows machine. After making this change and reinstalling from source, everything started working fine for me.

Also updated README.md to include some extra info for Windows users trying to build using w64devkit like llama.cpp.

Setup: Windows 10 Pro, Intel CPU i7 12th gen.

Issues related: #568 #825 #751

[tk-master]

well I get this error after I apply this pr

Traceback (most recent call last):
File "I:\llama-cpp-python\test.py", line 12, in
from llama_cpp import Llama
File "I:\llama-cpp-python\conda_py310\env\lib\site-packages\llama_cpp_init_.py", line 1, in
from .llama_cpp import *
File "I:\llama-cpp-python\conda_py310\env\lib\site-packages\llama_cpp\llama_cpp.py", line 81, in
_lib = _load_shared_library(_lib_base_name)
File "I:\llama-cpp-python\conda_py310\env\lib\site-packages\llama_cpp\llama_cpp.py", line 72, in _load_shared_library
raise FileNotFoundError(
FileNotFoundError: Shared library with base name 'llama' not found

[sujeendran]

@tk-master What are the contents in your I:\llama-cpp-python\conda_py310\env\lib\site-packages\llama_cpp location?

[tk-master]

Idk the usual I guess @sujeendran

[sujeendran]

@tk-master - Interesting. Mine has libllama.dll instead of llama.dll which was the issue that I was facing. I guess you must have used another compiler to build the package. I have made a small change to look for both files. Can you try now?

[tk-master]

Seems to work, I guess having both those lines to load the .dll doesn't hurt.

[abetlen]

@sujeendran thank you. Yeah having both lines can't hurt, likely an msvc vs mingw difference.