add GH actions

Now that the repository is public we can use actions as CI.

.github/llvm.sh

@@ -0,0 +1,111 @@
+#!/bin/bash
+################################################################################
+# Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+# See https://llvm.org/LICENSE.txt for license information.
+# SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+################################################################################
+#
+# This script will install the llvm toolchain on the different
+# Debian and Ubuntu versions
+
+set -eux
+
+CURRENT_LLVM_STABLE=14
+
+# Check for required tools
+needed_binaries=(lsb_release wget add-apt-repository)
+missing_binaries=()
+for binary in "${needed_binaries[@]}"; do
+    if ! which $binary &>/dev/null ; then
+        missing_binaries+=($binary)
+    fi
+done
+if [[ ${#missing_binaries[@]} -gt 0 ]] ; then
+    echo "You are missing some tools this script requires: ${missing_binaries[@]}"
+    echo "(hint: apt install lsb-release wget software-properties-common)"
+    exit 4
+fi
+
+# read optional command line argument
+# We default to the current stable branch of LLVM
+LLVM_VERSION=$CURRENT_LLVM_STABLE
+ALL=0
+if [ "$#" -ge 1 ]; then
+    LLVM_VERSION=$1
+    if [ "$1" == "all" ]; then
+        # special case for ./llvm.sh all
+        LLVM_VERSION=$CURRENT_LLVM_STABLE
+        ALL=1
+    fi
+    if [ "$#" -ge 2 ]; then
+      if [ "$2" == "all" ]; then
+          # Install all packages
+          ALL=1
+      fi
+    fi
+fi
+
+DISTRO=$(lsb_release -is)
+VERSION=$(lsb_release -sr)
+DIST_VERSION="${DISTRO}_${VERSION}"
+
+if [[ $EUID -ne 0 ]]; then
+   echo "This script must be run as root!"
+   exit 1
+fi
+
+declare -A LLVM_VERSION_PATTERNS
+LLVM_VERSION_PATTERNS[9]="-9"
+LLVM_VERSION_PATTERNS[10]="-10"
+LLVM_VERSION_PATTERNS[11]="-11"
+LLVM_VERSION_PATTERNS[12]="-12"
+LLVM_VERSION_PATTERNS[13]="-13"
+LLVM_VERSION_PATTERNS[14]="-14"
+LLVM_VERSION_PATTERNS[15]=""
+
+if [ ! ${LLVM_VERSION_PATTERNS[$LLVM_VERSION]+_} ]; then
+    echo "This script does not support LLVM version $LLVM_VERSION"
+    exit 3
+fi
+
+LLVM_VERSION_STRING=${LLVM_VERSION_PATTERNS[$LLVM_VERSION]}
+
+# find the right repository name for the distro and version
+case "$DIST_VERSION" in
+    Debian_9* )       REPO_NAME="deb http://apt.llvm.org/stretch/  llvm-toolchain-stretch$LLVM_VERSION_STRING main" ;;
+    Debian_10* )      REPO_NAME="deb http://apt.llvm.org/buster/   llvm-toolchain-buster$LLVM_VERSION_STRING  main" ;;
+    Debian_11* )      REPO_NAME="deb http://apt.llvm.org/bullseye/ llvm-toolchain-bullseye$LLVM_VERSION_STRING  main" ;;
+    Debian_unstable ) REPO_NAME="deb http://apt.llvm.org/unstable/ llvm-toolchain$LLVM_VERSION_STRING         main" ;;
+    Debian_testing )  REPO_NAME="deb http://apt.llvm.org/unstable/ llvm-toolchain$LLVM_VERSION_STRING         main" ;;
+
+    Ubuntu_16.04 )    REPO_NAME="deb http://apt.llvm.org/xenial/   llvm-toolchain-xenial$LLVM_VERSION_STRING  main" ;;
+    Ubuntu_18.04 )    REPO_NAME="deb http://apt.llvm.org/bionic/   llvm-toolchain-bionic$LLVM_VERSION_STRING  main" ;;
+    Ubuntu_18.10 )    REPO_NAME="deb http://apt.llvm.org/cosmic/   llvm-toolchain-cosmic$LLVM_VERSION_STRING  main" ;;
+    Ubuntu_19.04 )    REPO_NAME="deb http://apt.llvm.org/disco/    llvm-toolchain-disco$LLVM_VERSION_STRING   main" ;;
+    Ubuntu_19.10 )   REPO_NAME="deb http://apt.llvm.org/eoan/      llvm-toolchain-eoan$LLVM_VERSION_STRING    main" ;;
+    Ubuntu_20.04 )   REPO_NAME="deb http://apt.llvm.org/focal/     llvm-toolchain-focal$LLVM_VERSION_STRING   main" ;;
+    Ubuntu_20.10 )   REPO_NAME="deb http://apt.llvm.org/groovy/    llvm-toolchain-groovy$LLVM_VERSION_STRING  main" ;;
+    Ubuntu_21.04 )   REPO_NAME="deb http://apt.llvm.org/hirsute/   llvm-toolchain-hirsute$LLVM_VERSION_STRING main" ;;
+    Ubuntu_21.10 )   REPO_NAME="deb http://apt.llvm.org/impish/    llvm-toolchain-impish$LLVM_VERSION_STRING main" ;;
+    Ubuntu_22.04 )   REPO_NAME="deb http://apt.llvm.org/jammy/     llvm-toolchain-jammy$LLVM_VERSION_STRING main" ;;
+
+    Linuxmint_19* )  REPO_NAME="deb http://apt.llvm.org/bionic/   llvm-toolchain-bionic$LLVM_VERSION_STRING  main" ;;
+    Linuxmint_20* )  REPO_NAME="deb http://apt.llvm.org/focal/    llvm-toolchain-focal$LLVM_VERSION_STRING   main" ;;
+
+    * )
+    echo "Distribution '$DISTRO' in version '$VERSION' is not supported by this script (${DIST_VERSION})."
+        exit 2
+esac
+
+
+# install everything
+wget -O - https://apt.llvm.org/llvm-snapshot.gpg.key | apt-key add -
+add-apt-repository "${REPO_NAME}"
+apt-get update
+PKG="clang-$LLVM_VERSION lldb-$LLVM_VERSION lld-$LLVM_VERSION clangd-$LLVM_VERSION"
+if [[ $ALL -eq 1 ]]; then
+    # same as in test-install.sh
+    # No worries if we have dups
+    PKG="$PKG clang-tidy-$LLVM_VERSION clang-format-$LLVM_VERSION clang-tools-$LLVM_VERSION llvm-$LLVM_VERSION-dev lld-$LLVM_VERSION lldb-$LLVM_VERSION llvm-$LLVM_VERSION-tools libomp-$LLVM_VERSION-dev libc++-$LLVM_VERSION-dev libc++abi-$LLVM_VERSION-dev libclang-common-$LLVM_VERSION-dev libclang-$LLVM_VERSION-dev libclang-cpp$LLVM_VERSION-dev libunwind-$LLVM_VERSION-dev"
+fi
+apt-get install -y $PKG

.github/workflows/ci.yml

@@ -0,0 +1,32 @@
+name: Go
+
+on:
+  push:
+    branches: [ main ]
+  pull_request:
+    branches: [ main ]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v2
+
+    - name: Set up Go
+      uses: actions/setup-go@v2
+      with:
+        go-version: 1.17
+
+    - name: Install prerequisites
+      run: |
+        sudo ./.github/llvm.sh 13
+        sudo apt-get -y --no-install-recommends install build-essential qemu-system-x86 python3-pip wget
+        sudo pip3 install https://github.com/amluto/virtme/archive/beb85146cd91de37ae455eccb6ab67c393e6e290.zip
+
+    - name: Build
+      run: make
+
+    - name: Test
+      run: |
+        sudo sysctl -w kernel.unprivileged_bpf_disabled=0
+        make test