[wasm] Add more information about windows build (#50103)

diff --git a/src/mono/wasm/README.md b/src/mono/wasm/README.md
index 23248b3..5affce2 100644 (file)
--- a/src/mono/wasm/README.md
+++ b/src/mono/wasm/README.md
@@ -14,6 +14,10 @@ Note: Irrespective of `$(EMSDK_PATH)`'s value, `provision-wasm` will always inst
 Note: `EMSDK_PATH` is set by default in `src/mono/wasm/Makefile`, so building targets from that will have it set. But you might need to set it manually if
 you are directly using the `dotnet build`, or `build.sh`.
 
+### Windows dependencies
+
+Windows build [requirements](https://github.com/dotnet/runtime/blob/main/docs/workflow/requirements/windows-requirements.md)
+
 ## Building
 
 * To build the whole thing, with libraries:
@@ -26,6 +30,12 @@ you are directly using the `dotnet build`, or `build.sh`.
 
 ### Note: Additional msbuild arguments can be passed with: `make build-all MSBUILD_ARGS="/p:a=b"`
 
+### Windows
+
+* To build everything
+
+`build.cmd -os Browser -subset mono+libs` in the repo top level directory.
+
 # Running tests
 
 ## Installation of JavaScript engines