build: support MacOS

.github/workflows/CI_build_macos.yml

@@ -0,0 +1,26 @@
+name: CI Build MacOS
+
+on: [push, pull_request]
+
+jobs:
+  build:
+    runs-on: macos-latest
+
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          submodules: 'recursive'
+
+      - name: Build CI
+        run: |
+          make arm_sdk_install
+          make -j8
+          make bootloaders -j8
+
+      - name: Archive build
+        uses: actions/upload-artifact@v3
+        with:
+          name: AM32-binaries
+          path: |
+            obj/*.hex
+          retention-days: 7

make/tools.mk

@@ -15,7 +15,21 @@ MKDIR:=tools\\windows\\make\\bin\\mkdir
 RM:=tools\\windows\\make\\bin\\rm
 CUT:=tools\\windows\\make\\bin\\cut
 FGREP:=tools\\windows\\make\\bin\\fgrep
+
+else
+# MacOS and Linux
+UNAME_S := $(shell uname -s)
+ifeq ($(UNAME_S),Darwin)
+ARM_SDK_PREFIX:=tools/macos/xpack-arm-none-eabi-gcc-10.3.1-2.3/bin/arm-none-eabi-
+CP:=cp
+DSEP:=/
+NUL:=/dev/null
+MKDIR:=mkdir
+RM:=rm
+CUT:=cut
+FGREP:=fgrep
 else
+# assume Linux
 ARM_SDK_PREFIX:=tools/linux/xpack-arm-none-eabi-gcc-10.3.1-2.3/bin/arm-none-eabi-
 CP:=cp
 DSEP:=/
@@ -25,6 +39,7 @@ RM:=rm
 CUT:=cut
 FGREP:=fgrep
 endif
+endif
 
 # workaround for lack of a lowercase function in GNU make
 # look away before this sends you blind ....

make/tools_install.mk

@@ -3,6 +3,7 @@
 # download location for tools
 WINDOWS_TOOLS=https://firmware.ardupilot.org/Tools/AM32-tools/windows-tools.zip
 LINUX_TOOLS=https://firmware.ardupilot.org/Tools/AM32-tools/linux-tools.tar.gz
+MACOS_TOOLS=https://firmware.ardupilot.org/Tools/AM32-tools/macos-tools.tar.gz
 
 ifeq ($(OS),Windows_NT)
 
@@ -14,6 +15,18 @@ arm_sdk_install:
 	@powershell -Command "Expand-Archive -Path windows-tools.zip -Force -DestinationPath ."
 	@echo windows tools install done
 
+else
+# MacOS and Linux
+UNAME_S := $(shell uname -s)
+
+ifeq ($(UNAME_S),Darwin)
+
+arm_sdk_install:
+	@echo Installing macos tools
+	@wget $(MACOS_TOOLS)
+	@tar xzf macos-tools.tar.gz
+	@echo macos tools install done
+
 else
 
 arm_sdk_install:
@@ -23,3 +36,4 @@ arm_sdk_install:
 	@echo linux tools install done
 
 endif
+endif