Add macOS support

.github/workflows/macos.yml

@@ -0,0 +1,34 @@
+---
+name: macOS CI
+
+on:
+  push:
+    branches: [main]
+  pull_request:
+    branches: [main]
+
+jobs:
+  ubuntu:
+    name: macOS ${{ matrix.version }} (${{ matrix.compiler }})
+    strategy:
+      fail-fast: false
+      matrix:
+        compiler: [clang++]
+        version: [latest]
+
+    runs-on: macos-${{ matrix.version }}
+    env:
+      CXX: ${{ matrix.compiler }}
+      CXXFLAGS: -Werror
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Install dependencies
+        run: |
+          brew upgrade
+          brew install boost boost-python3 help2man
+
+      - name: Build and check
+        run: make distcheck

CMakeLists.txt

@@ -15,7 +15,7 @@
 # You should have received a copy of the GNU General Public License
 # along with csdiff.  If not, see <http://www.gnu.org/licenses/>.
 
-cmake_minimum_required(VERSION 3.12)
+cmake_minimum_required(VERSION 3.15)
 project(csdiff CXX)
 enable_testing()
 

src/CMakeLists.txt

@@ -105,11 +105,10 @@ macro(build_pycsdiff version)
     message(STATUS "Python ${version} binding enabled. "
         "The pycsdiff module will be built!")
 
-    add_library(pycsdiff_py${version} SHARED pycsdiff.cc)
-    target_include_directories(pycsdiff_py${version} SYSTEM
-        PRIVATE ${Python${version}_INCLUDE_DIRS})
+    add_library(pycsdiff_py${version} MODULE pycsdiff.cc)
     target_link_libraries(pycsdiff_py${version}
-        PRIVATE ${Boost_PYTHON${PYTHON_VERSION_SUFFIX}_LIBRARY})
+        PRIVATE ${Boost_PYTHON${PYTHON_VERSION_SUFFIX}_LIBRARY}
+                Python${version}::Module)
 
     # set correct name so that `python -c 'import pycsdiff' works`
     set_target_properties(pycsdiff_py${version} PROPERTIES