Add CI and test Makefile

.github/workflows/test.yml

@@ -0,0 +1,27 @@
+name: CI
+
+on:
+  pull_request:
+  push:
+    paths-ignore:
+    - '**.md'
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        emacs_version:
+          - 27.1
+          - 27.2
+          - 28.1
+          - 28.2
+          - snapshot
+    steps:
+    - uses: purcell/setup-emacs@master
+      with:
+        version: ${{ matrix.emacs_version }}
+
+    - uses: actions/checkout@v2
+    - name: Run tests
+      run: make

Makefile

@@ -0,0 +1,28 @@
+EMACS ?= emacs
+
+# A space-separated list of required package names
+NEEDED_PACKAGES = package-lint
+
+INIT_PACKAGES="(progn \
+  (require 'package) \
+  (push '(\"melpa\" . \"https://melpa.org/packages/\") package-archives) \
+  (package-initialize) \
+  (dolist (pkg '(${NEEDED_PACKAGES})) \
+    (unless (package-installed-p pkg) \
+      (unless (assoc pkg package-archive-contents) \
+        (package-refresh-contents)) \
+      (package-install pkg))) \
+  )"
+
+all: compile package-lint clean-elc
+
+package-lint:
+	${EMACS} -Q --eval ${INIT_PACKAGES} -batch -f package-lint-batch-and-exit splunk-mode.el
+
+compile: clean-elc
+	${EMACS} -Q --eval ${INIT_PACKAGES} -L . -batch -f batch-byte-compile *.el
+
+clean-elc:
+	rm -f f.elc
+
+.PHONY:	all compile clean-elc package-lint