generic toolchain build in CI

.github/workflows/ficus.yml

@@ -2,17 +2,58 @@ name: Ficus build
 
 on:
   push:
-    branches: [ "main" ]
+    branches: ["main"]
   pull_request:
-    branches: [ "main" ]
+    branches: ["main"]
 
 env:
   BUILD_TYPE: Debug
   BUILD_PARALLEL: 3
 
 jobs:
+  build-generic-toolchain:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout repo
+        uses: actions/checkout@v3
+
+      - name: Install sudo for ACT runner
+        run: apt-get update && apt-get install -y sudo
+        if: env.ACT=='true'
+
+      - name: Cache generic toolchain
+        id: cache-toolchain
+        uses: actions/cache@v3
+        env:
+          cache-name: cache-toolchain
+        with:
+          path: ./toolchain
+          key: ${{ runner.os }}-build-${{ env.cache-name }}-${{ hashFiles('toolchain_scripts/*') }}
+          restore-keys: |
+            ${{ runner.os }}-build-${{ env.cache-name }}-${{ hashFiles('toolchain_scripts/*') }}
+
+      - if: ${{ steps.cache-toolchain.outputs.cache-hit != 'true' }}
+        name: Build generic toolchain
+        run: source env.sh && toolchain_scripts/build-all.sh
+
+      - if: ${{ steps.cache-toolchain.outputs.cache-hit != 'true' }}
+        name: Strip toolchain
+        continue-on-error: true
+        run: find toolchain -type f | xargs strip
+
+      - name: Tar the toolchain
+        run: cd ${{github.workspace}} && tar -czvf toolchain-generic.tar.xz toolchain
+
+      - name: Upload ficus toolchain
+        uses: actions/upload-artifact@v3
+        with:
+          name: toolchain-generic
+          path: ${{github.workspace}}/toolchain-generic.tar.xz
+          retention-days: 5
+
   build-ficus-toolchain:
     runs-on: ubuntu-latest
+    needs: build-generic-toolchain
     steps:
       - name: Checkout repo
         uses: actions/checkout@v3
@@ -24,8 +65,14 @@ jobs:
       - name: Install dependencies
         run: sudo apt-get update && sudo apt-get install -y cmake build-essential pax gcc g++ nasm bison bzip2 flex mtools texinfo libgmp-dev libmpfr-dev libmpc-dev xorriso
 
-      - name: Unpack prebuilt toolchain
-        run: cd ${{github.workspace}} && tar xf toolchain_scripts/toolchain-s1-linux-aarch64.tar.xz
+      - name: Download toolchain
+        uses: actions/download-artifact@v3
+        with:
+          name: toolchain-generic
+          path: ${{github.workspace}}
+
+      - name: Untar the toolchain
+        run: cd ${{github.workspace}} && tar xf toolchain-generic.tar.xz
 
       - name: Build ficus toolchain
         run: source ${{github.workspace}}/env.sh && ${{github.workspace}}/ficus-toolchain/build-all.sh s2only