README + add options

* add detail about the APPLE_TEAM_ID env variable
* add --arch, --help, and -c options

Author: sandboxcoder

CMakeLists.txt

@@ -42,7 +42,7 @@ set(CMAKE_XCODE_ATTRIBUTE_DEVELOPMENT_TEAM "$ENV{APPLE_TEAM_ID}")
     # Run shell script to install the mac-camera-extension
     add_custom_target(run_script ALL
         COMMAND ${CMAKE_COMMAND} -E echo "Running the shell script..."
-        COMMAND bash "./install-mac-camera-ext.sh" "${CAMERA_EXTENSION_GIT_TAG_VER}"
+        COMMAND bash "./install-mac-camera-ext.sh" "${CAMERA_EXTENSION_GIT_TAG_VER}" "${CMAKE_OSX_ARCHITECTURES}"
         WORKING_DIRECTORY "${CMAKE_SOURCE_DIR}"
         COMMENT "Executing script.sh from CMake"
     )

README.md

@@ -8,7 +8,8 @@ CMake (minimum 3.22) and xcode 15.2
 
 # How to Build
 
-Run the following commands:
+Make sure you define the `APPLE_TEAM_ID` environment variable which is required because the build scripts will download the slobs-mac-virtual camera system extension and codesign it.
+Run the following commands below (or just run `build.sh` script):
 
 ```
 cmake --preset macos

build.sh

@@ -1,10 +1,37 @@
-# Usage: ./build.sh <clean>
-cd "$(dirname "$0")"
+# Usage: ./build.sh [--clean | --arch=<arch>]
+function display_usage {
+  echo "Usage: $(basename "$0") [OPTIONS]"
+  echo ""
+  echo "Description: This script builds the Streamlabs Mac Virtual Camera installer app."
+  echo ""
+  echo "Options:"
+  echo "  -h, --help        Display this help message and exit."
+  echo "  --arch            sets CMAKE_OSX_ARCHITECTURES For example- arm64 or x86_64"
+  echo "  --clean,-c        cleans cmake cache"
+  echo ""
+  echo "Examples:"
+  echo "  $(basename "$0") --arch=x86_64"
+  exit 0
+}
 
-if [[ "$1" == "clean" ]]; then
-  # Wipe cmake cache
-  rm -rf build
+if [[ ( "$1" == "--help" ) || ( "$1" == "-h" ) ]]; then
+  display_usage
 fi
 
-cmake --preset macos
+cd "$(dirname "$0")"
+cmake_args=()
+
+for arg in "$@"
+do
+  if [[ ("$arg" == "--clean") || ("$arg" == "-c") ]]; then
+    # Wipe cmake cache
+    rm -rf build
+  elif [[ $arg == --arch=* ]]; then
+    # Extract the value using parameter expansion
+    arch_value="${arg#*=}"
+    cmake_args+=(-DCMAKE_OSX_ARCHITECTURES=${arch_value})
+  fi
+done
+
+cmake --preset macos "${cmake_args[@]}"
 cmake --build build --preset macos

install-mac-camera-ext.sh

@@ -10,7 +10,7 @@ cd obs-studio/plugins/mac-virtualcam/src/camera-extension
 checkArch=$(arch)
 echo "Build the mac-camera-extension on $checkArch"
 
-./build-slobs-cameraextension.sh
+./build-slobs-cameraextension.sh "$2"
 
 echo "Copy system extension into the app bundle at Contents/Library/SystemExtensions folder"
 cd "$root"