suitesparse-cholmod: proper CUDA support

recipes/suitesparse-cholmod/all/cholmod-conan-cuda-support.cmake

@@ -0,0 +1,6 @@
+# Reproduces the CUDA dependencies added by https://github.com/DrTimothyAldenDavis/SuiteSparse/blob/v7.7.0/CHOLMOD/GPU/CMakeLists.txt
+
+find_dependency(CUDAToolkit REQUIRED)
+
+target_link_libraries(SuiteSparse::CHOLMOD INTERFACE CUDA::nvrtc CUDA::cudart_static CUDA::cublas)
+target_compile_definitions(SuiteSparse::CHOLMOD INTERFACE "CHOLMOD_HAS_CUDA")

recipes/suitesparse-cholmod/all/conanfile.py

@@ -32,10 +32,13 @@ class SuiteSparseCholmodConan(ConanFile):
         "cuda": False,
     }
     options_description = {
-        "gpl": "Enable GPL-licensed modules",
+        "gpl": "Enable GPL-licensed modules: MatrixOps, Modify, Supernodal and CUDA",
         "cuda": "Enable CUDA acceleration",
     }
 
+    def export_sources(self):
+        copy(self, "cholmod-conan-cuda-support.cmake", self.recipe_folder, self.export_sources_folder)
+
     def config_options(self):
         if self.settings.os == "Windows":
             del self.options.fPIC
@@ -104,6 +107,7 @@ def package(self):
         rmdir(self, os.path.join(self.package_folder, "lib", "cmake"))
         rmdir(self, os.path.join(self.package_folder, "share"))
         rm(self, "*.pdb", self.package_folder, recursive=True)
+        copy(self, "cholmod-conan-cuda-support.cmake", self.export_sources_folder, os.path.join(self.package_folder, "lib", "cmake"))
 
     def package_info(self):
         self.cpp_info.set_property("cmake_file_name", "CHOLMOD")
@@ -112,6 +116,9 @@ def package_info(self):
             self.cpp_info.set_property("cmake_target_aliases", ["SuiteSparse::CHOLMOD_static"])
         self.cpp_info.set_property("pkg_config_name", "CHOLMOD")
 
+        self.cpp_info.builddirs.append(os.path.join("lib", "cmake"))
+        self.cpp_info.set_property("cmake_build_modules", [os.path.join("lib", "cmake", "cholmod-conan-cuda-support.cmake")])
+
         self.cpp_info.libs = ["cholmod"]
         self.cpp_info.includedirs.append(os.path.join("include", "suitesparse"))