new(ci): add a zig build job plus a composite action to setup zig.

Signed-off-by: Federico Di Pierro <[email protected]>

.github/actions/install-zig/action.yml

@@ -0,0 +1,41 @@
+name: 'install-zig'
+description: 'Install zig compiler and make it available in PATH.'
+
+outputs:
+  zig_path:
+    description: "Path of installed zig, automatically added to GITHUB_PATH"
+    value: ${{ steps.zig.outputs.zig-path }}
+
+runs:
+  using: "composite"
+  steps:
+    - name: Install zig
+      shell: bash
+      id: zig
+      env:
+        ZIG_VERSION: '0.14.0-dev.1588+2111f4c38'
+      run: |
+        curl -L -o zig.tar.xz https://ziglang.org/builds/zig-linux-$(uname -m)-${ZIG_VERSION}.tar.xz
+        tar -xvf zig.tar.xz
+
+        cat > zig-linux-$(uname -m)-${ZIG_VERSION}/zig-cc <<EOF
+        #!/bin/bash
+        exec zig cc -target $(uname -m)-linux-gnu.2.17 -mcpu=baseline "\$@"
+        EOF
+        chmod +x zig-linux-$(uname -m)-${ZIG_VERSION}/zig-cc
+
+        cat > zig-linux-$(uname -m)-${ZIG_VERSION}/zig-c++ <<EOF
+        #!/bin/bash
+        exec zig c++ -target $(uname -m)-linux-gnu.2.17 -mcpu=baseline "\$@"
+        EOF
+        chmod +x zig-linux-$(uname -m)-${ZIG_VERSION}/zig-c++
+
+        sudo mkdir -p /usr/local/zig/
+        sudo cp -R zig-linux-$(uname -m)-${ZIG_VERSION}/* /usr/local/zig/
+        echo "/usr/local/zig" >> $GITHUB_PATH
+        echo "CC=zig-cc" >> $GITHUB_ENV
+        echo "CXX=zig-c++" >> $GITHUB_ENV
+        echo "AR=zig ar" >> $GITHUB_ENV
+        echo "RANLIB=zig ranlib" >> $GITHUB_ENV
+        
+        echo "zig-path=/usr/local/zig/zig-linux-$(uname -m)-${ZIG_VERSION}" >> $GITHUB_OUTPUT

.github/workflows/ci.yml

@@ -21,7 +21,7 @@ jobs:
       fail-fast: false
       matrix:
         arch: [amd64, arm64]
-        name: [system_deps, bundled_deps, system_deps_minimal, sanitizers]
+        name: [system_deps, bundled_deps, system_deps_minimal, sanitizers, zig]
         include:
           - name: system_deps
             cmake_opts: -DBUILD_WARNINGS_AS_ERRORS=On -DBUILD_BPF=On -DUSE_BUNDLED_DEPS=False
@@ -31,6 +31,8 @@ jobs:
             cmake_opts: -DBUILD_WARNINGS_AS_ERRORS=On -DUSE_BUNDLED_DEPS=False -DMINIMAL_BUILD=True
           - name: sanitizers
             cmake_opts: -DUSE_ASAN=On -DUSE_UBSAN=On -DUSE_BUNDLED_DEPS=False
+          - name: zig
+            cmake_opts: -DUSE_BUNDLED_DEPS=True
     container:
       image: debian:buster
     steps:
@@ -60,13 +62,25 @@ jobs:
           git config --global --add safe.directory $GITHUB_WORKSPACE
 
       - name: Build and test 🏗️🧪
+        if: matrix.name != 'zig'
         env:
           UBSAN_OPTIONS: print_stacktrace=1
         run: |
           mkdir -p build
           cd build && cmake ${{ matrix.cmake_opts }} -DENABLE_THREAD_POOL=ON ../
           KERNELDIR=/lib/modules/$(ls /lib/modules)/build make -j4
           make run-unit-tests
+       
+      - name: Install zig
+        if: matrix.name == 'zig'
+        uses: ./.github/actions/install-zig    
+
+      - name: Build sinsp-example
+        if: matrix.name == 'zig'
+        run: |
+          mkdir -p build
+          cd build && cmake ${{ matrix.cmake_opts }} -DENABLE_THREAD_POOL=ON ../
+          make sinsp-example -j4
 
   build-libs-linux-amd64-static:
     name: build-libs-linux-amd64-static 🎃