Update README.md

Author: amzamora

README.md

@@ -2,26 +2,32 @@
 Prebuilt versions of LLVM and LLD for diamond.
 
 ## Requirements
+
+### macOS and Linux
 - A C++ compiler
 - Ninja
 - LLD
+- cmake
 
-## Steps to build LLVM (macOS and Linux)
+### Windows
+- Visual Studio
+- cmake
 
-### Get LLVM
+## Get LLVM
 ```
-git clone [LLVM]([url](https://github.com/llvm/llvm-project)https://github.com/llvm/llvm-project).
+git clone https://github.com/llvm/llvm-project.git
 ```
 
-### Change directory to LLVM
+## Change directory to LLVM
 ```
 cd llvm-project
 ```
 
-### Checkout the version you want
+## Checkout the version you want
 ```
 git checkout llvmorg-15.0.7
 ```
+## Steps to build LLVM on macOS and Linux
 
 ### Configure LLVM
 ```
@@ -45,3 +51,25 @@ Delete:
 - Remove `share` folder from `folder/where/you/want/to/leave/llvm/`
 - Remove all `.so` files from `folder/where/you/want/to/leave/llvm/lib`
 - Remove `cmake` folder from `folder/where/you/want/to/leave/llvm/lib`
+
+## Steps to build LLVM on Windows
+
+## Configure LLVM
+
+```
+cmake -S llvm -B build -DLLVM_ENABLE_PROJECTS=lld -DLLVM_TARGETS_TO_BUILD=X86 -Thost=x64 -DLLVM_USE_CRT_RELEASE=MT
+```
+
+### Build
+
+To build open the generated `LLVM.sln` file on `build` directory with Visual Studio. Select `Release` and then compile. If you don't have a lot of ram you should limit thee number of cores used in for compilation. For that you can follow this link https://stackoverflow.com/a/49068569.
+
+### Install
+```
+cmake --install . --prefix folder/where/you/want/to/leave/llvm/
+```
+
+### Remove unnecessary files from installation
+Delete:
+- All binaries, but `llvm-config` from `folder/where/you/want/to/leave/llvm/bin`
+- Remove `share` folder from `folder/where/you/want/to/leave/llvm/`