Enhance build.md with macOS and dependency instructions

Added instructions for building on macOS and installing native library dependencies.

Author: frysee

docs/development/build.md

@@ -17,13 +17,25 @@ sudo apt-get install build-essential zip zipmerge
 Some parts of the development process are easier when you can build a target for your host instead of a handheld device. If you want to use the `desktop` platform target, you need to install additional dependencies (to match what would be present on the handheld device):
 ```shell
 sudo apt-get install libsqlite3-dev libzip-dev libsdl2-dev libsdl2-image-dev libsdl2-ttf-dev
+or
+brew install sdl2_image sdl2_ttf libzip
 ```
 After that, you can build a partial NextUI flavour that works on your host machine:
 ```shell
 make setup common PLATFORM=desktop
 ```
 The main repo contains a few templated (launch configs for VS Code)[https://github.com/LoveRetro/NextUI/blob/main/.vscode/launch.json] that you can modify and extend to fit your needs.
 
+### Building on macOS
+NextUI is build using gcc. In order for you to develop on macOS, you will have to take some extra steps:
+```shell
+brew install gcc gdb make
+# This will link the brew-sourced binaries to /usr/local/bin in order
+# to avoid clashes with Apple clang that might also be installed on
+# your machine (and masquerading as gcc):
+<local NextUI repo>/workspace/desktop/macos_create_gcc_symlinks.sh
+```
+
 ## Step 2: Install Docker
 
 | Docker Version | Instructions |