github: Add ubuntu workflow

This is a basic workflow to run some of the tests on
Ubuntu in the GitHub CI. It's based on the existing
SourceHut debian workflow.

.github/workflows/ubuntu.yml

@@ -0,0 +1,53 @@
+# SPDX-FileCopyrightText: Stone Tickle <[email protected]>
+# SPDX-License-Identifier: GPL-3.0-only
+
+name: ubuntu
+
+on:
+    push:
+      branches: [ github_workflow_ubuntu ]
+    pull_request:
+      branches: [ github_workflow_ubuntu ]
+      types: [opened, synchronize, reopened]
+
+jobs:
+  ubuntu:
+    runs-on: ubuntu-latest
+    env:
+      DEBIAN_FRONTEND: noninteractive
+    steps:
+      # Checkout muon source and install dependencies.
+      - uses: actions/checkout@v3
+        with:
+          fetch-depth: 0
+      - name: Install dependencies
+        run: |
+          sudo apt update
+          sudo apt install gcc
+
+      # Bootstrap basic build.
+      - name: Bootstrap
+        run: |
+          ./bootstrap.sh build
+          PATH="build:$PATH" build/muon -v setup build
+          build/muon -C build samu
+
+      # Build muon with ASan and UBSan and run the testsuite.
+      - name: build_asan_ubsan
+        run: |
+          build/muon setup -Db_sanitize=address,undefined build_asan_ubsan
+          build/muon -C build_asan_ubsan samu
+      - name: test_asan_ubsan
+        run: |
+          cd build_asan_ubsan
+          ./muon test -d dots
+
+      # Build muon FORTIFY_SOURCE=3 and run the testsuite.
+      - name: build_fortify_source
+        run: |
+          CFLAGS=-D_FORTIFY_SOURCE=3 build/muon setup build_fortify_source
+          build/muon -C build_fortify_source samu
+      - name: test_fortify_source
+        run: |
+          cd build_fortify_source
+          ./muon test -d dots

tests/fmt/meson.build

@@ -1,6 +1,7 @@
 # SPDX-FileCopyrightText: Stone Tickle <[email protected]>
 # SPDX-License-Identifier: GPL-3.0-only
 
-test('fmt', find_program('test.sh'), args: muon, suite: 'fmt')
+# Increased timeout necessary to avoid sporadic timeouts on GitHub ubuntu workflow
+test('fmt', find_program('test.sh'), args: muon, suite: 'fmt', timeout: 45)
 
 subdir('editorconfig')