CI: Change build using external igraph

.github/workflows/build.yml

@@ -32,7 +32,7 @@ jobs:
       - name: Build wheels (manylinux)
         uses: pypa/[email protected]
         env:
-          CIBW_BEFORE_BUILD: "yum install -y flex bison libxml2-devel zlib-devel cairo-devel && pip install -U cmake pip setuptools wheel && python setup.py build_c_core"
+          CIBW_BEFORE_BUILD: "yum install -y flex bison libxml2-devel zlib-devel cairo-devel && pip install -U cmake pip setuptools wheel && scripts/build_igraph.sh"
           CIBW_BUILD: "*-manylinux_${{ matrix.wheel_arch }}"
           # Skip tests for Python 3.10 onwards because SciPy does not have
           # 32-bit wheels for Linux
@@ -41,7 +41,7 @@ jobs:
       - name: Build wheels (musllinux)
         uses: pypa/[email protected]
         env:
-          CIBW_BEFORE_BUILD: "apk add flex bison libxml2-dev zlib-dev cairo-dev && pip install -U cmake pip setuptools wheel && python setup.py build_c_core"
+          CIBW_BEFORE_BUILD: "apk add flex bison libxml2-dev zlib-dev cairo-dev && pip install -U cmake pip setuptools wheel && scripts/build_igraph.sh"
           CIBW_BUILD: "*-musllinux_${{ matrix.wheel_arch }}"
           CIBW_TEST_COMMAND: "cd {project} && pip install --prefer-binary '.[test-musl]' && python -m pytest -v tests"
 
@@ -66,7 +66,7 @@ jobs:
       - name: Build wheels (manylinux)
         uses: pypa/[email protected]
         env:
-          CIBW_BEFORE_BUILD: "yum install -y flex bison libxml2-devel zlib-devel cairo-devel && pip install -U cmake pip setuptools wheel && python setup.py build_c_core"
+          CIBW_BEFORE_BUILD: "yum install -y flex bison libxml2-devel zlib-devel cairo-devel && pip install -U cmake pip setuptools wheel && scripts/build_igraph.sh"
           CIBW_ARCHS_LINUX: aarch64
           CIBW_BUILD: "*-manylinux_aarch64"
 
@@ -91,7 +91,7 @@ jobs:
       - name: Build wheels (musllinux)
         uses: pypa/[email protected]
         env:
-          CIBW_BEFORE_BUILD: "apk add flex bison libxml2-dev zlib-dev cairo-dev && pip install -U cmake pip setuptools wheel && python setup.py build_c_core"
+          CIBW_BEFORE_BUILD: "apk add flex bison libxml2-dev zlib-dev cairo-dev && pip install -U cmake pip setuptools wheel && scripts/build_igraph.sh"
           CIBW_ARCHS_LINUX: aarch64
           CIBW_BUILD: "*-musllinux_aarch64"
           CIBW_TEST_COMMAND: "cd {project} && pip install --prefer-binary '.[test-musl]' && python -m pytest -v tests"
@@ -159,7 +159,7 @@ jobs:
         uses: pypa/[email protected]
         env:
           CIBW_ARCHS_MACOS: "${{ matrix.wheel_arch }}"
-          CIBW_BEFORE_BUILD: "pip install -U setuptools && python setup.py build_c_core"
+          CIBW_BEFORE_BUILD: "pip install -U setuptools && scripts/build_igraph.sh"
           CIBW_ENVIRONMENT: "LDFLAGS=-L$HOME/local/lib"
           IGRAPH_CMAKE_EXTRA_ARGS: -DCMAKE_OSX_ARCHITECTURES=${{ matrix.cmake_arch }} ${{ matrix.cmake_extra_args }} -DCMAKE_PREFIX_PATH=$HOME/local
 
@@ -258,7 +258,7 @@ jobs:
       - name: Build wheels
         uses: pypa/[email protected]
         env:
-          CIBW_BEFORE_BUILD: "pip install -U setuptools && python setup.py build_c_core"
+          CIBW_BEFORE_BUILD: "pip install -U setuptools && scripts/build_igraph.bat"
           CIBW_BUILD: "*-${{ matrix.wheel_arch }}"
           CIBW_TEST_COMMAND: "cd /d {project} && pip install --prefer-binary \".[test]\" && python -m pytest tests"
           # Skip tests for Python 3.10 onwards because SciPy does not have
@@ -303,7 +303,7 @@ jobs:
 
       - name: Build sdist
         run: |
-          python setup.py build_c_core
+          scripts/build_igraph.sh
           python setup.py sdist
           python setup.py install
 
@@ -356,7 +356,7 @@ jobs:
         env:
           IGRAPH_USE_SANITIZERS: 1
         run: |
-          python setup.py build_c_core
+          scripts/build_igraph.sh
 
       - name: Build and install Python extension
         env:

scripts/build_igraph.bat

@@ -0,0 +1,63 @@
+@echo off
+
+set IGRAPH_VERSION=0.10.13
+
+set ROOT_DIR=%cd%
+echo Using root dir %ROOT_DIR%
+
+if not exist "%ROOT_DIR%\build-deps\src\" (
+  md %ROOT_DIR%\build-deps\src
+)
+
+cd "%ROOT_DIR%\build-deps\src"
+if not exist "igraph\" (
+  echo.
+  echo Cloning igraph into %ROOT_DIR%\build-deps\src\igraph
+  REM Clone repository if it does not exist yet
+  git clone --depth 1 --branch %IGRAPH_VERSION% https://github.com/igraph/igraph.git
+)
+
+REM Make sure the git repository points to the correct version
+echo.
+echo Checking out %IGRAPH_VERSION} in ${ROOT_DIR%\build-deps\src\igraph
+cd "%ROOT_DIR%\build-deps\src\igraph"
+git fetch origin tag %IGRAPH_VERSION% --no-tags
+git checkout %IGRAPH_VERSION%
+
+REM Make build directory
+if not exist "%ROOT_DIR%\build-deps\build\igraph\" (
+  echo.
+  echo Make directory %ROOT_DIR%\build-deps\build\igraph
+  md %ROOT_DIR%\build-deps\build\igraph
+)
+
+REM Configure, build and install
+cd "%ROOT_DIR%\build-deps\build\igraph"
+
+echo.
+echo Configure igraph build
+cmake %ROOT_DIR%\build-deps\src\igraph ^
+  -DCMAKE_INSTALL_PREFIX=%ROOT_DIR%\build-deps\install\ ^
+  -DBUILD_SHARED_LIBS=ON ^
+  -DIGRAPH_GLPK_SUPPORT=ON ^
+  -DIGRAPH_GRAPHML_SUPPORT=ON ^
+  -DIGRAPH_OPENMP_SUPPORT=ON ^
+  -DIGRAPH_USE_INTERNAL_BLAS=ON ^
+  -DIGRAPH_USE_INTERNAL_LAPACK=ON ^
+  -DIGRAPH_USE_INTERNAL_ARPACK=ON ^
+  -DIGRAPH_USE_INTERNAL_GLPK=ON ^
+  -DIGRAPH_USE_INTERNAL_GMP=ON ^
+  -DIGRAPH_WARNINGS_AS_ERRORS=OFF ^
+  -DCMAKE_BUILD_TYPE=Release ^
+  -DBUILD_TESTING=OFF ^
+  %EXTRA_CMAKE_ARGS%
+
+echo.
+echo Build igraph
+cmake --build . --config Release
+
+echo.
+echo Install igraph to %ROOT_DIR%\build-deps\install\
+cmake --build . --target install --config Release
+
+cd "%ROOT_DIR%"

scripts/build_igraph.sh

@@ -0,0 +1,61 @@
+IGRAPH_VERSION=0.10.13
+
+ROOT_DIR=`pwd`
+echo "Using root dir ${ROOT_DIR}"
+
+# Create source directory
+if [ ! -d "${ROOT_DIR}/build-deps/src" ]; then
+  echo ""
+  echo "Make directory ${ROOT_DIR}/build-deps/src"
+  mkdir -p ${ROOT_DIR}/build-deps/src
+fi
+
+cd ${ROOT_DIR}/build-deps/src
+if [ ! -d "igraph" ]; then
+  echo ""
+  echo "Cloning igraph into ${ROOT_DIR}/build-deps/src/igraph"
+  # Clone repository if it does not exist yet
+  git clone --branch ${IGRAPH_VERSION} https://github.com/igraph/igraph.git --single-branch
+fi
+
+# Make sure the git repository points to the correct version
+echo ""
+echo "Checking out ${IGRAPH_VERSION} in ${ROOT_DIR}/build-deps/src/igraph"
+cd ${ROOT_DIR}/build-deps/src/igraph
+git fetch origin tag ${IGRAPH_VERSION} --no-tags
+git checkout ${IGRAPH_VERSION}
+
+# Make build directory
+if [ ! -d "${ROOT_DIR}/build-deps/build/igraph" ]; then
+  echo ""
+  echo "Make directory ${ROOT_DIR}/build-deps/build/igraph"
+  mkdir -p ${ROOT_DIR}/build-deps/build/igraph
+fi
+
+# Configure, build and install
+cd ${ROOT_DIR}/build-deps/build/igraph
+
+echo ""
+echo "Configure igraph build"
+cmake ${ROOT_DIR}/build-deps/src/igraph \
+  -DCMAKE_INSTALL_PREFIX=${ROOT_DIR}/build-deps/install/ \
+  -DBUILD_SHARED_LIBS=ON \
+  -DIGRAPH_GLPK_SUPPORT=ON \
+  -DIGRAPH_GRAPHML_SUPPORT=ON \
+  -DIGRAPH_OPENMP_SUPPORT=ON \
+  -DIGRAPH_USE_INTERNAL_BLAS=ON \
+  -DIGRAPH_USE_INTERNAL_LAPACK=ON \
+  -DIGRAPH_USE_INTERNAL_ARPACK=ON \
+  -DIGRAPH_USE_INTERNAL_GLPK=ON \
+  -DIGRAPH_USE_INTERNAL_GMP=ON \
+  -DIGRAPH_WARNINGS_AS_ERRORS=OFF \
+  -DCMAKE_BUILD_TYPE=Release \
+  ${EXTRA_CMAKE_ARGS}
+
+echo ""
+echo "Build igraph"
+cmake --build .
+
+echo ""
+echo "Install igraph to ${ROOT_DIR}/build-deps/install/"
+cmake --build . --target install

setup.py

@@ -73,6 +73,8 @@ def get_tag(self):
 igraph_extension = Extension(
     "igraph._igraph",
     libraries=["igraph"],
+    include_dirs=['build-deps/install/include'],
+    library_dirs=['build-deps/install/lib'],
     sources=sources,
     py_limited_api=should_build_abi3_wheel,
     define_macros=macros,