Add cross-compile to GitHub build actions

.github/workflows/build.yml

@@ -1,5 +1,5 @@
 #
-# build_cmake.yml - GitHub build action for AVRDUDE
+# build.yml - GitHub build action for AVRDUDE
 # Copyright (C) 2021 Marius Greuel
 #
 # This program is free software; you can redistribute it and/or modify
@@ -43,23 +43,83 @@ jobs:
           bison
           libelf-dev
           libusb-dev
-          libftdi1-dev
+          libusb-1.0-0-dev
           libhidapi-dev
+          libftdi1-dev
+          libreadline-dev
       - name: Configure
         run: >-
           cmake
           -D DEBUG_CMAKE=1
           -D CMAKE_BUILD_TYPE=${{env.BUILD_TYPE}}
-          -B ${{github.workspace}}/build
+          -B ../build
       - name: Build
-        run: cmake --build ${{github.workspace}}/build
+        run: cmake --build ../build
       - name: Archive build artifacts
         if: always()
         uses: actions/upload-artifact@v2
         with:
           name: linux-x86_64
           path: |
-            ${{github.workspace}}/build/*
+            build/
+            !**/*.d
+            !**/*.o
+
+  linux:
+    runs-on: ubuntu-latest
+    container: debian:11
+    defaults:
+      run:
+        working-directory: ./src
+    strategy:
+      matrix:
+        include:
+          - { arch: i386, processor: i686, prefix: i686-linux-gnu, inc-lib: i386-linux-gnu }
+          - { arch: armhf, processor: armhf, prefix: arm-linux-gnueabihf, inc-lib: arm-linux-gnueabihf }
+          - { arch: arm64, processor: aarch64, prefix: aarch64-linux-gnu, inc-lib: aarch64-linux-gnu }
+    steps:
+      - uses: actions/checkout@v2
+      - name: Add architecture
+        run: |
+          dpkg --add-architecture ${{matrix.arch}}
+          apt-get update
+      - name: Install prerequisites
+        run: >-
+          apt-get install -y
+          git
+          cmake
+          flex
+          bison
+          crossbuild-essential-${{matrix.arch}}
+          libelf-dev:${{matrix.arch}}
+          libusb-dev:${{matrix.arch}}
+          libusb-1.0-0-dev:${{matrix.arch}}
+          libhidapi-dev:${{matrix.arch}}
+          libftdi1-dev:${{matrix.arch}}
+          libreadline-dev:${{matrix.arch}}
+      - name: Configure
+        run: >-
+          cmake
+          -D DEBUG_CMAKE=1
+          -D CMAKE_BUILD_TYPE=${{env.BUILD_TYPE}}
+          -D CMAKE_SYSTEM_NAME=Linux
+          -D CMAKE_SYSTEM_PROCESSOR=${{matrix.processor}}
+          -D CMAKE_C_COMPILER=${{matrix.prefix}}-gcc
+          -D CMAKE_FIND_ROOT_PATH=/usr/${{matrix.prefix}}
+          -D CMAKE_INCLUDE_PATH=/usr/include/${{matrix.inc-lib}}
+          -D CMAKE_LIBRARY_PATH=/usr/lib/${{matrix.inc-lib}}
+          -B ../build
+      - name: Build
+        run: cmake --build ../build
+      - name: Archive build artifacts
+        if: always()
+        uses: actions/upload-artifact@v2
+        with:
+          name: linux-${{matrix.processor}}
+          path: |
+            build/
+            !**/*.d
+            !**/*.o
 
   macos-x86_64:
     runs-on: macos-latest
@@ -76,8 +136,8 @@ jobs:
           bison
           libelf
           libusb
-          libftdi
           hidapi
+          libftdi
       - name: Configure
         run: >-
           cmake
@@ -85,21 +145,30 @@ jobs:
           -D CMAKE_EXE_LINKER_FLAGS=-L/usr/local/Cellar
           -D DEBUG_CMAKE=1
           -D CMAKE_BUILD_TYPE=${{env.BUILD_TYPE}}
-          -B ${{github.workspace}}/build
+          -B ../build
       - name: Build
-        run: cmake --build ${{github.workspace}}/build
+        run: cmake --build ../build
       - name: Archive build artifacts
         if: always()
         uses: actions/upload-artifact@v2
         with:
           name: macos-x86_64
           path: |
-            ${{github.workspace}}/build/*
-  msvc-x86_64:
+            build/
+            !**/*.d
+            !**/*.o
+
+  msvc:
     runs-on: windows-latest
     defaults:
       run:
         working-directory: ./src
+    strategy:
+      matrix:
+        include:
+          - { arch: x86, platform: Win32 }
+          - { arch: x64, platform: x64 }
+          - { arch: arm64, platform: ARM64 }
     steps:
       - uses: actions/checkout@v2
       - name: Install prerequisites
@@ -107,6 +176,7 @@ jobs:
       - name: Configure
         run: >-
           cmake
+          -A ${{matrix.platform}}
           -D DEBUG_CMAKE=1
           -D CMAKE_SYSTEM_VERSION=11
           -D CMAKE_C_FLAGS_RELWITHDEBINFO="/MT /GL /Zi /O2 /Ob1 /DNDEBUG"
@@ -118,11 +188,15 @@ jobs:
       - name: Build
         run: cmake --build ../build --config ${{env.BUILD_TYPE}}
       - name: Archive build artifacts
+        if: always()
         uses: actions/upload-artifact@v2
         with:
-          name: msvc-x86_64
+          name: msvc-${{matrix.arch}}
           path: |
-            ${{github.workspace}}/build/*
+            build/
+            !**/_deps/
+            !**/*.obj
+
   mingw:
     runs-on: windows-latest
     defaults: