Add arm64-linux build

.github/workflows/build.yml

@@ -92,6 +92,16 @@ jobs:
           cmake_args: >-
             -DDEBUG_ASSERTIONS_FATAL=ON
             -DBATTERY=OFF
+        - name: Linux (arm64)
+          os: ubuntu-latest
+          triplet: arm64-linux-release
+          host_triplet: x64-linux-release
+          overlay_ports: vcpkg/overlay/ports
+          ccache_path: ~/.ccache
+          cpack_generator: TGZ
+          package_extension: tar.gz
+          cmake_args: >-
+            -DBATTERY=OFF
 
     name: '${{ matrix.name }}'
     runs-on: '${{ matrix.os }}'
@@ -100,7 +110,7 @@ jobs:
       ARTIFACT_BASE_NAME: 'mixxx-${{ matrix.triplet }}${{ matrix.suffix }}'
       VCPKG_DEFAULT_TRIPLET: '${{ matrix.triplet }}'
       VCPKG_DEFAULT_HOST_TRIPLET: '${{ matrix.host_triplet }}'
-      VCPKG_OVERLAY_TRIPLETS: vcpkg/overlay/triplets
+      VCPKG_OVERLAY_TRIPLETS: overlay/triplets:vcpkg/overlay/triplets
       VCPKG_OVERLAY_PORTS: '${{ matrix.overlay_ports }}'
 
     steps:

overlay/triplets/arm64-linux-release.cmake

@@ -0,0 +1,11 @@
+set(VCPKG_TARGET_ARCHITECTURE arm64)
+set(VCPKG_CRT_LINKAGE dynamic)
+set(VCPKG_LIBRARY_LINKAGE static)
+
+set(VCPKG_CMAKE_SYSTEM_NAME Linux)
+
+set(VCPKG_BUILD_TYPE release)
+
+if("${PORT}" STREQUAL "benchmark")
+  set(VCPKG_CMAKE_CONFIGURE_OPTIONS -DRUN_HAVE_POSIX_REGEX=0)
+endif()

scripts/install-ubuntu-deps

@@ -7,26 +7,96 @@ if ! command -v apt-get >/dev/null; then
   exit 1
 fi
 
-echo "==> Installing system dependencies with APT..."
+triplet_to_deb_arch() {
+  if [ -n "$1" ]; then
+    case "$1" in
+      x64-*) echo amd64;;
+      arm64-*) echo arm64;;
+      *) echo "Unsupported triplet: $1"; return 1;;
+    esac
+  fi
+}
+
+triplet_to_gcc_arch() {
+  if [ -n "$1" ]; then
+    case "$1" in
+      x64-*) echo x86-64;;
+      arm64-*) echo aarch64;;
+      *) echo "Unsupported triplet: $1"; return 1;;
+    esac
+  fi
+}
+
+deb_arch_to_mirror() {
+  if [ -n "$1" ]; then
+    case "$1" in
+      amd64|i386) echo "http://archive.ubuntu.com/ubuntu";;
+      *) echo "http://ports.ubuntu.com/ubuntu-ports";;
+    esac
+  fi
+}
+
+echo "==> Updating APT..."
 sudo apt-get update
-sudo apt-get install -y \
-  autoconf-archive \
-  autotools-dev \
-  ccache \
-  cmake \
-  libasound2-dev \
-  '^libxcb.*-dev' \
-  libx11-xcb-dev \
-  libgl1-mesa-dev \
-  libglu1-mesa-dev \
-  libsleef-dev \
-  libudev-dev \
-  libupower-glib-dev \
-  libtool \
-  libxrender-dev \
-  libxi-dev \
-  libxkbcommon-dev \
-  libxkbcommon-x11-dev \
-  mesa-common-dev \
-  nasm \
+
+echo "==> Installing host dependencies with APT..."
+host_deps=(
+  autoconf-archive
+  autotools-dev
+  ccache
+  cmake
+  libtool
+  nasm
   ninja-build
+)
+sudo apt-get install -y "${host_deps[@]}"
+
+host="$VCPKG_DEFAULT_HOST_TRIPLET"
+target="$VCPKG_DEFAULT_TRIPLET"
+
+host_deb_arch="$(triplet_to_deb_arch "$host")"
+target_deb_arch="$(triplet_to_deb_arch "$target")"
+target_gcc_arch="$(triplet_to_gcc_arch "$target")"
+target_mirror="$(deb_arch_to_mirror "$target_deb_arch")"
+
+if [[ -n "$host" && -n "$target" && "$host" != "$target" ]]; then
+  echo "==> Installing cross-compilation tools with APT..."
+  sudo apt-get install -y "g++-$target_gcc_arch-linux-gnu"
+
+  if [ -z "$(dpkg --print-foreign-architectures | grep "$target_arch")" ]; then
+    echo "==> Adding target mirror to APT sources..."
+    ubuntu_version="$(cat /etc/os-release | grep VERSION_CODENAME | cut -d '=' -f 2-)"
+    sudo sed -i "s/deb \([a-z]\)/deb [arch=$host_deb_arch] \1/" /etc/apt/sources.list
+    sudo bash -c "{ for repo_suffix in '' '-updates'; do echo \"deb [arch=$target_deb_arch] $target_mirror $ubuntu_version\$repo_suffix main multiverse universe\"; done; cat /etc/apt/sources.list; } > /etc/apt/sources.list.new"
+    sudo mv /etc/apt/sources.list{.new,}
+    cat /etc/apt/sources.list
+
+    echo "==> Adding target architecture to APT..."
+    sudo dpkg --add-architecture "$target_deb_arch"
+    sudo apt-get update
+  fi
+fi
+
+echo "==> Installing target dependencies with APT..."
+target_deps=(
+  libasound2-dev
+  '^libxcb.*-dev'
+  libx11-xcb-dev
+  libgl1-mesa-dev
+  libglu1-mesa-dev
+  libsleef-dev
+  libudev-dev
+  libupower-glib-dev
+  libxrender-dev
+  libxi-dev
+  libxkbcommon-dev
+  libxkbcommon-x11-dev
+  mesa-common-dev
+)
+if [ -n "$target_deb_arch" ]; then
+  # We need the packages for the host architecture too, since some packages
+  # (e.g. Qt) have to be built for the host too during cross compilation
+  sudo apt-get install -y "${target_deps[@]}" "${target_deps[@]/%/:$target_deb_arch}"
+else
+  sudo apt-get install -y "${target_deps[@]}"
+fi

vars/vcpkg.sh

@@ -4,5 +4,5 @@ if [ -z "$VCPKG_ROOT" ]; then
   export VCPKG_ROOT="$rootdir/vcpkg"
 fi
 
-export VCPKG_OVERLAY_TRIPLETS="$VCPKG_ROOT/overlay/triplets"
+export VCPKG_OVERLAY_TRIPLETS="$rootdir/overlay/triplets:$VCPKG_ROOT/overlay/triplets"
 export VCPKG_OVERLAY_PORTS="$VCPKG_ROOT/overlay/osx:$VCPKG_ROOT/overlay/ports"