From 2ce9330e7d571e31ca5f66c170a8b8cca4f1e1bf Mon Sep 17 00:00:00 2001
From: Igor Wodiany <igor.wodiany@manchester.ac.uk>
Date: Tue, 28 May 2024 12:50:19 +0100
Subject: [PATCH 1/4] Add support for GitHub Actions

---
 .github/workflows/main.yml | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)
 create mode 100644 .github/workflows/main.yml

diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
new file mode 100644
index 00000000..b26dd716
--- /dev/null
+++ b/.github/workflows/main.yml
@@ -0,0 +1,22 @@
+name: build-and-run-mambo
+run-name: Running GitHub Action
+on: [push]
+jobs:
+  build-and-run-mambo:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          path: mambo
+          submodules: true
+      - run: sudo apt-get update
+      # - run: sudo apt-get upgrade
+      - run: sudo apt-get install -y debootstrap
+      - run: sudo apt-get install -y qemu-user-static
+      - run: mkdir -p /tmp/chroot/
+      - run: sudo debootstrap --arch=riscv64 --foreign focal /tmp/chroot/riscv64 http://ports.ubuntu.com/ubuntu-ports
+      - run: sudo cp /usr/bin/qemu-riscv64-static /tmp/chroot/riscv64/usr/bin/
+      - run: sudo chroot /tmp/chroot/riscv64/ /usr/bin/qemu-riscv64-static /bin/bash -c '/debootstrap/debootstrap --second-stage'
+      - run: sudo cp -r $GITHUB_WORKSPACE/mambo /tmp/chroot/riscv64/root
+      - run: sudo chroot /tmp/chroot/riscv64/ /usr/bin/qemu-riscv64-static /bin/bash -c 'sudo apt-get update; sudo apt-get upgrade -y; sudo apt-get -y install build-essential libelf-dev ruby; cd /root/mambo/; make'
+      - run: sudo chroot /tmp/chroot/riscv64/ /usr/bin/qemu-riscv64-static /bin/bash -c '/root/mambo/dbm /bin/ls'

From cefddaadf1dd03bc8a689252a4a02ab4feed5e43 Mon Sep 17 00:00:00 2001
From: Igor Wodiany <igor.wodiany@manchester.ac.uk>
Date: Tue, 28 May 2024 18:13:00 +0100
Subject: [PATCH 2/4] Add configuration matrix for GitHub Actions

---
 .github/workflows/main.yml | 19 ++++++++++++-------
 1 file changed, 12 insertions(+), 7 deletions(-)

diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index b26dd716..22850821 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -3,6 +3,11 @@ run-name: Running GitHub Action
 on: [push]
 jobs:
   build-and-run-mambo:
+    strategy:
+      matrix:
+        os: [focal]
+        arch: [ {os: arm64, qemu: aarch64}, {os: riscv64, qemu: riscv64}, {os: armhf, qemu: arm} ]
+      fail-fast: false
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
@@ -10,13 +15,13 @@ jobs:
           path: mambo
           submodules: true
       - run: sudo apt-get update
-      # - run: sudo apt-get upgrade
+      - run: sudo apt-get upgrade
       - run: sudo apt-get install -y debootstrap
       - run: sudo apt-get install -y qemu-user-static
       - run: mkdir -p /tmp/chroot/
-      - run: sudo debootstrap --arch=riscv64 --foreign focal /tmp/chroot/riscv64 http://ports.ubuntu.com/ubuntu-ports
-      - run: sudo cp /usr/bin/qemu-riscv64-static /tmp/chroot/riscv64/usr/bin/
-      - run: sudo chroot /tmp/chroot/riscv64/ /usr/bin/qemu-riscv64-static /bin/bash -c '/debootstrap/debootstrap --second-stage'
-      - run: sudo cp -r $GITHUB_WORKSPACE/mambo /tmp/chroot/riscv64/root
-      - run: sudo chroot /tmp/chroot/riscv64/ /usr/bin/qemu-riscv64-static /bin/bash -c 'sudo apt-get update; sudo apt-get upgrade -y; sudo apt-get -y install build-essential libelf-dev ruby; cd /root/mambo/; make'
-      - run: sudo chroot /tmp/chroot/riscv64/ /usr/bin/qemu-riscv64-static /bin/bash -c '/root/mambo/dbm /bin/ls'
+      - run: sudo debootstrap --arch=${{ matrix.arch.os }} --foreign ${{ matrix.os }} /tmp/chroot/${{ matrix.arch.os }} http://ports.ubuntu.com/ubuntu-ports
+      - run: sudo cp /usr/bin/qemu-${{ matrix.arch.qemu }}-static /tmp/chroot/${{ matrix.arch.os }}/usr/bin/
+      - run: sudo chroot /tmp/chroot/${{ matrix.arch.os }}/ /usr/bin/qemu-${{ matrix.arch.qemu }}-static /bin/bash -c '/debootstrap/debootstrap --second-stage'
+      - run: sudo cp -r $GITHUB_WORKSPACE/mambo /tmp/chroot/${{ matrix.arch.os }}/root
+      - run: sudo chroot /tmp/chroot/${{ matrix.arch.os }}/ /usr/bin/qemu-${{ matrix.arch.qemu }}-static /bin/bash -c 'sudo apt-get update; sudo apt-get upgrade -y; sudo apt-get -y install build-essential libelf-dev ruby; cd /root/mambo/; make'
+      - run: sudo chroot /tmp/chroot/${{ matrix.arch.os }}/ /usr/bin/qemu-${{ matrix.arch.qemu }}-static /bin/bash -c '/root/mambo/dbm /bin/ls'

From f0d1d51ec83aff91812af3e7a69e500963d922ce Mon Sep 17 00:00:00 2001
From: Igor Wodiany <igor.wodiany@manchester.ac.uk>
Date: Wed, 29 May 2024 11:31:51 +0100
Subject: [PATCH 3/4] Add triggers for GitHub Actions

---
 .github/workflows/main.yml | 10 +++++++---
 1 file changed, 7 insertions(+), 3 deletions(-)

diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 22850821..ea7a9f51 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -1,6 +1,10 @@
 name: build-and-run-mambo
-run-name: Running GitHub Action
-on: [push]
+run-name: Building and running MAMBO triggered by ${{ github.actor }} on ${{ github.ref }}
+on:
+  push:
+    branches: [master]
+  pull_request:
+    types: [opened, synchronize, reopened] 
 jobs:
   build-and-run-mambo:
     strategy:
@@ -8,7 +12,7 @@ jobs:
         os: [focal]
         arch: [ {os: arm64, qemu: aarch64}, {os: riscv64, qemu: riscv64}, {os: armhf, qemu: arm} ]
       fail-fast: false
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-22.04
     steps:
       - uses: actions/checkout@v4
         with:

From e90e4bce00e2bbfa8e6b5676fcf7fd52d999177c Mon Sep 17 00:00:00 2001
From: Igor Wodiany <igor.wodiany@manchester.ac.uk>
Date: Thu, 30 May 2024 10:11:26 +0100
Subject: [PATCH 4/4] Cache sysroot in GitHub Actions

---
 .github/workflows/main.yml | 41 ++++++++++++++++++++++++++++----------
 1 file changed, 30 insertions(+), 11 deletions(-)

diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index ea7a9f51..07c562f0 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -18,14 +18,33 @@ jobs:
         with:
           path: mambo
           submodules: true
-      - run: sudo apt-get update
-      - run: sudo apt-get upgrade
-      - run: sudo apt-get install -y debootstrap
-      - run: sudo apt-get install -y qemu-user-static
-      - run: mkdir -p /tmp/chroot/
-      - run: sudo debootstrap --arch=${{ matrix.arch.os }} --foreign ${{ matrix.os }} /tmp/chroot/${{ matrix.arch.os }} http://ports.ubuntu.com/ubuntu-ports
-      - run: sudo cp /usr/bin/qemu-${{ matrix.arch.qemu }}-static /tmp/chroot/${{ matrix.arch.os }}/usr/bin/
-      - run: sudo chroot /tmp/chroot/${{ matrix.arch.os }}/ /usr/bin/qemu-${{ matrix.arch.qemu }}-static /bin/bash -c '/debootstrap/debootstrap --second-stage'
-      - run: sudo cp -r $GITHUB_WORKSPACE/mambo /tmp/chroot/${{ matrix.arch.os }}/root
-      - run: sudo chroot /tmp/chroot/${{ matrix.arch.os }}/ /usr/bin/qemu-${{ matrix.arch.qemu }}-static /bin/bash -c 'sudo apt-get update; sudo apt-get upgrade -y; sudo apt-get -y install build-essential libelf-dev ruby; cd /root/mambo/; make'
-      - run: sudo chroot /tmp/chroot/${{ matrix.arch.os }}/ /usr/bin/qemu-${{ matrix.arch.qemu }}-static /bin/bash -c '/root/mambo/dbm /bin/ls'
+      - name: Set up host environment
+        run: |
+          sudo apt-get update
+          sudo apt-get upgrade
+          sudo apt-get install -y debootstrap
+          sudo apt-get install -y qemu-user-static
+          sudo mkdir -p /tmp/chroot/
+          sudo chown root /bin/tar
+          sudo chmod u+s /bin/tar
+      - uses: actions/cache/restore@v4
+        id: cache
+        with:
+          path: /tmp/chroot/${{ matrix.arch.os }}
+          key: ${{ matrix.os }}.${{ matrix.arch.os }}
+      - name: Install and configure sysroot
+        if: steps.cache.outputs.cache-hit != 'true'
+        run: | 
+          sudo debootstrap --arch=${{ matrix.arch.os }} --foreign ${{ matrix.os }} /tmp/chroot/${{ matrix.arch.os }} http://ports.ubuntu.com/ubuntu-ports
+          sudo cp /usr/bin/qemu-${{ matrix.arch.qemu }}-static /tmp/chroot/${{ matrix.arch.os }}/usr/bin/
+          sudo chroot /tmp/chroot/${{ matrix.arch.os }}/ /usr/bin/qemu-${{ matrix.arch.qemu }}-static /bin/bash -c '/debootstrap/debootstrap --second-stage'
+      - uses: actions/cache/save@v4
+        if: steps.cache.outputs.cache-hit != 'true'
+        with:
+          path: /tmp/chroot/${{ matrix.arch.os }}
+          key: ${{ matrix.os }}.${{ matrix.arch.os }}
+      - name: Build and run MAMBO inside chroot
+        run: |
+          sudo cp -r $GITHUB_WORKSPACE/mambo /tmp/chroot/${{ matrix.arch.os }}/root
+          sudo chroot /tmp/chroot/${{ matrix.arch.os }}/ /usr/bin/qemu-${{ matrix.arch.qemu }}-static /bin/bash -c 'sudo apt-get update; sudo apt-get upgrade -y; sudo apt-get -y install build-essential libelf-dev ruby; cd /root/mambo/; make'
+          sudo chroot /tmp/chroot/${{ matrix.arch.os }}/ /usr/bin/qemu-${{ matrix.arch.qemu }}-static /bin/bash -c '/root/mambo/dbm /bin/ls'