Use matrix to split jobs

.github/workflows/core-st.yml

-name: Build FFmpeg.wasm (Single Thread)
-on:
-  push:
-    branches: [ n4.3.1-wasm ]
-  pull_request:
-    branches: [ n4.3.1-wasm ]
-
-env:
-  EM_VERSION: 2.0.8
-  EM_CACHE_FOLDER: 'emsdk-cache'
-
-jobs:
-  linux-build_with_docker:
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v2
-        with:
-          submodules: recursive
-      - name: Build FFMpeg
-        shell: bash
-        run: |
-          FFMPEG_ST=yes bash build-with-docker.sh
-      - uses: actions/upload-artifact@master
-        with:
-          name: ffmpeg-core
-          path: wasm/packages/core-st/dist

.github/workflows/core.yml

 name: Build FFmpeg.wasm
 on:
   push:
-    branches: [ n4.3.1-wasm ]
+    branches:
+      - n4.3.1-wasm
   pull_request:
-    branches: [ n4.3.1-wasm ]
+    branches:
+      - n4.3.1-wasm
 
-env:
-  EM_VERSION: 2.0.8
-  EM_CACHE_FOLDER: 'emsdk-cache'
+# env:
+#   EM_VERSION: 2.0.8
+#   EM_CACHE_FOLDER: 'emsdk-cache'
 
 jobs:
-  linux-build_with_docker:
+  build-libs:
+    strategy:
+      max-parallel: 1
+      matrix:
+        script:
+          - build-zlib
+          - build-x264
+          - build-x265
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v2
@@ -18,12 +27,12 @@ jobs:
           submodules: recursive
       - name: Build FFMpeg
         shell: bash
-        run: |
-          bash build-with-docker.sh
-      - uses: actions/upload-artifact@master
-        with:
-          name: ffmpeg-core
-          path: wasm/packages/core/dist
+        run: bash build-with-docker.sh install-deps ${{ matrix.script }}
+      # - uses: actions/upload-artifact@master
+      #   with:
+      #     name: ffmpeg-core
+      #     path: wasm/packages/core/dist
+
   # Disable macos build due to there is no ldconfig command
   # during freetype2 build.
   # macos-build:

build-with-docker.sh

@@ -11,4 +11,4 @@ docker run \
   -v $PWD/wasm/cache:/emsdk_portable/.data/cache/wasm \
   -e FFMPEG_ST=${FFMPEG_ST:-no} \
   emscripten/emsdk:$EM_VERSION \
-  sh -c 'bash ./build.sh'
+  bash ./build.sh "$@"

build.sh

@@ -4,45 +4,47 @@ set -eo pipefail
 
 SCRIPT_ROOT=$(dirname $0)/wasm/build-scripts
 
-# verify Emscripten version
-emcc -v
-# install dependencies
-$SCRIPT_ROOT/install-deps.sh
-# build zlib
-$SCRIPT_ROOT/build-zlib.sh
-# build x264
-$SCRIPT_ROOT/build-x264.sh
-# build x265
-$SCRIPT_ROOT/build-x265.sh
-# build libvpx
-$SCRIPT_ROOT/build-libvpx.sh
-# build WavPack
-$SCRIPT_ROOT/build-wavpack.sh
-# build lame
-$SCRIPT_ROOT/build-lame.sh
-# build fdk-aac
-$SCRIPT_ROOT/build-fdk-aac.sh
-# build ogg
-$SCRIPT_ROOT/build-ogg.sh
-# build vorbis
-$SCRIPT_ROOT/build-vorbis.sh
-# build theora
-$SCRIPT_ROOT/build-theora.sh
-# build opus
-$SCRIPT_ROOT/build-opus.sh
-# build libwebp
-$SCRIPT_ROOT/build-libwebp.sh
-# build freetype2
-$SCRIPT_ROOT/build-freetype2.sh
-# build fribidi
-$SCRIPT_ROOT/build-fribidi.sh
-# build harfbuzz
-$SCRIPT_ROOT/build-harfbuzz.sh
-# build libass
-$SCRIPT_ROOT/build-libass.sh
-# build aom (disabled as it is extremely slow)
-# $SCRIPT_ROOT/build-aom.sh
-# configure FFmpeg with Emscripten
-$SCRIPT_ROOT/configure-ffmpeg.sh
-# build ffmpeg.wasm core
-$SCRIPT_ROOT/build-ffmpeg.sh
+run() {
+  for name in $@; do
+    $SCRIPT_ROOT/$name.sh
+  done
+}
+
+run-all() {
+  SCRIPTS=(
+    # install dependencies
+    install-deps
+    build-zlib
+    build-x264
+    build-x265
+    build-libvpx
+    build-wavpack
+    build-lame
+    build-fdk-acc
+    build-ogg
+    build-vorbis
+    build-theora
+    build-opus
+    build-libwebp
+    build-freetype2
+    build-fribidi
+    build-harfbuzz
+    build-libass
+    #build-aom # disabled as it is extremely slow
+    configure-ffmpeg
+    build-ffmpeg
+  )
+  run ${SCRIPTS[@]}
+}
+
+main() {
+  # verify Emscripten version
+  emcc -v
+  if [[ "$@" == "" ]]; then
+    run-all
+  else
+    run "$@"
+  fi
+}
+
+main "$@"