Merge pull request #10 from t-paul/enable-github-action

Enable github build action.

.github/workflows/linux-build.yml

@@ -0,0 +1,31 @@
+name: linux-build
+
+on:
+  push:
+    branches: [ "main" ]
+  pull_request:
+    branches: [ "main" ]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+    - name: setup
+      run: |
+        sudo add-apt-repository universe
+        sudo apt-get update
+        sudo apt-get install -y --no-install-recommends \
+          libsdl1.2-dev \
+          libgtk2.0-dev \
+          libz80ex-dev \
+          libxmu-dev \
+          netpbm
+    - uses: actions/checkout@v4
+    - name: bootstrap
+      run: ./config/bootstrap
+    - name: configure
+      run: ./configure
+    - name: make
+      run: make
+    - name: make check
+      run: make check