diff --git a/doc/BUILD.md b/doc/BUILD.md
index f9e42fd..e30e5f1 100644
--- a/doc/BUILD.md
+++ b/doc/BUILD.md
@@ -25,6 +25,29 @@ Install the appropriate target:
 rustup target add arm-unknown-linux-gnueabihf
 ```
 
+#### Notes for MacOS
+
+Toolchain for Apple Silicon Macs (M1/M2) native build [messense/homebrew-macos-cross-toolchains](https://github.com/messense/homebrew-macos-cross-toolchains). Direct download link for [v11.2.0](https://github.com/messense/homebrew-macos-cross-toolchains/releases/download/v11.2.0/arm-unknown-linux-gnueabihf-aarch64-darwin.tar.gz). Newer versions may not work due different glibc versions. I have success with 11.2.0.
+
+For Catalina and later versions, sign the binaries to (hopefully) keep MacOS from blocking execution.
+
+```sh
+cd /full/path/to/extracted/toolchain/
+find ./ -type f -perm +111 | xargs -n1 sudo codesign --force --deep --sign -
+```
+
+Create the following symlinks to compensate for a different naming scheme.
+
+```sh
+cd /full/path/to/extracted/toolchain/bin
+ln -s arm-unknown-linux-gnueabihf-gcc arm-linux-gnueabihf-gcc
+ln -s arm-unknown-linux-gnueabihf-ar arm-linux-gnueabihf-ar
+ln -s arm-unknown-linux-gnueabihf-strip arm-linux-gnueabihf-strip
+```
+
+Make the "bin" folder avalilable to your `$PATH`
+
+
 ### Build Phase
 
 ```sh