fix build

.github/workflows/build_wheels.yml

@@ -14,6 +14,8 @@ jobs:
     steps:
       - name: Checkout the repository
         uses: actions/checkout@v4
+        with:
+          submodules: 'true'
 
       - name: Build wheels
         uses: pypa/[email protected]

.gitmodules

@@ -0,0 +1,3 @@
+[submodule "src/swisspair_cpp"]
+	path = src/swisspair_cpp
+	url = https://github.com/karlosss/swisspair.git

CMakeLists.txt

@@ -22,9 +22,9 @@ project(
 
 add_link_options(-lgmp)
 
-add_subdirectory(swisspair)
-add_subdirectory(swisspair/gmpwrap)
-add_subdirectory(swisspair/Minimum-Cost-Perfect-Matching)
+add_subdirectory(src/swisspair_cpp)
+add_subdirectory(src/swisspair_cpp/gmpwrap)
+add_subdirectory(src/swisspair_cpp/Minimum-Cost-Perfect-Matching)
 
 # Find the module development requirements (requires FindPython from 3.17 or
 # scikit-build-core's built-in backport)
@@ -35,7 +35,7 @@ find_package(pybind11 CONFIG REQUIRED)
 # this)
 python_add_library(_swisspair MODULE swisspair-python/src/bindings.cpp WITH_SOABI)
 target_link_libraries(_swisspair PRIVATE pybind11::headers)
-target_link_libraries(_swisspair PRIVATE swisspair)
+target_link_libraries(_swisspair PRIVATE swisspair_cpp)
 target_link_libraries(_swisspair PRIVATE gmpwrap)
 target_link_libraries(_swisspair PRIVATE mincostpmatch)