Add CI test workflow and simplify Gemfile

Add GitHub Actions workflow to run tests across Ruby 3.2, 3.3, 3.4, 4.0.
Simplify Gemfile to use published ffi-clang gem. Pin ffi-clang >= 0.14.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: cfis

.github/workflows/test.yml

@@ -0,0 +1,30 @@
+name: Tests
+
+on:
+  push:
+    branches: [main]
+  pull_request:
+    branches: [main]
+  workflow_dispatch:
+
+jobs:
+  test:
+    strategy:
+      fail-fast: false
+      matrix:
+        ruby: ['3.2', '3.3', '3.4', '4.0']
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v6
+
+      - name: Install libclang
+        run: sudo apt-get install -y libclang-dev
+
+      - name: Set up Ruby
+        uses: ruby/setup-ruby@v1
+        with:
+          ruby-version: ${{ matrix.ruby }}
+          bundler-cache: true
+
+      - name: Run tests
+        run: bundle exec rake test

Gemfile

@@ -1,10 +1,3 @@
 source 'https://rubygems.org'
 
 gemspec
-
-if RUBY_PLATFORM =~ /linux/ && File.exist?('/mnt/c')
-  gem "ffi-clang", path: "/mnt/c/Source/ffi-clang"  # WSL
-else
-  gem "ffi-clang", path: "c:/Source/ffi-clang"      # Windows
-end
-#gem "ffi-clang", github: "ioquatix/ffi-clang"

ruby-bindgen.gemspec

@@ -36,7 +36,7 @@ Gem::Specification.new do |spec|
   spec.homepage = 'https://github.com/ruby-rice/ruby-bindgen'
 
   spec.add_dependency 'ffi', '>= 1.16'
-  spec.add_dependency 'ffi-clang', '>= 0.10'
+  spec.add_dependency 'ffi-clang', '>= 0.14'
   spec.add_dependency 'ostruct', '>= 0.6.0'
 
   spec.add_development_dependency 'logger'