Build packages for linux aarch64 (arm64) (#12)

* Build for Linux ARM64

* Build on Ubuntu 20.04

* Fix package

* Try with --arch=aarch64

* Oops

Author: lalinsky

.github/workflows/build.yml

@@ -6,11 +6,12 @@ on:
 
 jobs:
   package-linux:
-    runs-on: ubuntu-18.04
+    runs-on: ubuntu-20.04
     strategy:
       matrix:
         arch:
           - x86_64
+          - arm64
     env:
       ARCH: ${{ matrix.arch }}
     steps:
@@ -19,6 +20,11 @@ jobs:
         run: |
           sudo apt-get update -y && \
           sudo apt-get install -y yasm
+      - name: Install ARM64 compiler
+        if: env.ARCH == 'arm64'
+        run: |
+          sudo apt-get update -y && \
+          sudo apt-get install -y gcc-aarch64-linux-gnu
       - name: Build
         run: ./build-linux.sh
       - name: Archive production artifacts
@@ -28,7 +34,7 @@ jobs:
           path: artifacts/
 
   package-windows:
-    runs-on: ubuntu-18.04
+    runs-on: ubuntu-20.04
     strategy:
       matrix:
         arch:

build-linux.sh

@@ -22,6 +22,14 @@ case $ARCH in
     i686)
         FFMPEG_CONFIGURE_FLAGS+=(--cc="gcc -m32")
         ;;
+    arm64)
+        FFMPEG_CONFIGURE_FLAGS+=(
+            --enable-cross-compile
+            --cross-prefix=aarch64-linux-gnu-
+            --target-os=linux
+            --arch=aarch64
+        )
+        ;;
     arm*)
         FFMPEG_CONFIGURE_FLAGS+=(
             --enable-cross-compile