Use skbuild to build cython/sycl_buffer example

Author: oleksandr-pavlyk

examples/cython/sycl_buffer/CMakeLists.txt

@@ -0,0 +1,46 @@
+cmake_minimum_required(VERSION 3.22...3.27 FATAL_ERROR)
+
+project(example_cython_syclbuffer VERSION 0.1 LANGUAGES CXX
+  DESCRIPTION "Example of Cython extension to work on host allocated NumPy array using SYCL buffers and SYCL functions.")
+set(DPCTL_CMAKE_MODULES_PATH "${CMAKE_SOURCE_DIR}/../../../cmake")
+set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} ${DPCTL_CMAKE_MODULES_PATH})
+
+find_package(IntelSYCL REQUIRED PATHS ${DPCTL_CMAKE_MODULES_PATH} NO_DEFAULT_PATH)
+
+
+set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} "${CMAKE_SOURCE_DIR}")
+set(CMAKE_CXX_STANDARD 17)
+set(CMAKE_CXX_STANDARD_REQUIRED True)
+
+# Define CMAKE_INSTALL_xxx: LIBDIR, INCLUDEDIR
+include(GNUInstallDirs)
+
+find_package(Python REQUIRED COMPONENTS Development.Module NumPy)
+find_package(Dpctl REQUIRED)
+
+# -w is to set working directory (and correctly set __pyx_f[] array of filenames)
+set(CYTHON_FLAGS "-w \"${CMAKE_SOURCE_DIR}\" --module-name _syclbuffer")
+find_package(Cython REQUIRED)
+
+set(py_module_name _syclbuffer)
+
+set(_cy_source syclbuffer/_buffer_example.pyx)
+add_cython_target(${py_module_name} ${_cy_source} CXX OUTPUT_VAR _generated_cy_src)
+Python_add_library(${py_module_name} MODULE WITH_SOABI ${_generated_cy_src})
+add_sycl_to_target(TARGET ${py_module_name} SOURCES ${_generated_cy_src})
+target_include_directories(${py_module_name} PUBLIC src ${Dpctl_INCLUDE_DIRS})
+target_link_libraries(${py_module_name} PRIVATE Python::NumPy)
+
+install(TARGETS ${py_module_name} DESTINATION syclbuffer)
+
+foreach(_src_fn ${_sources})
+    get_source_file_property(_compile_options ${_src_fn} COMPILE_OPTIONS)
+    set(_combined_options ${_compile_options} "-O3")
+    set_source_files_properties(${_src_fn}
+        PROPERTIES
+        COMPILE_OPTIONS "${_combined_options}"
+    )
+endforeach()
+target_link_options(${py_module_name} PRIVATE -fsycl-device-code-split=per_kernel)
+
+set(ignoreMe "${SKBUILD}")

examples/cython/sycl_buffer/setup.py

@@ -14,46 +14,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-from setuptools import Extension, setup
-from setuptools.command.build_ext import build_ext
-
-import dpctl
-
-
-class custom_build_ext(build_ext):
-    def build_extensions(self):
-        self.compiler.set_executable("compiler_so", "icpx -fsycl -fPIC")
-        self.compiler.set_executable("compiler_cxx", "icpx -fsycl -fPIC")
-        self.compiler.set_executable(
-            "linker_so",
-            "icpx -fsycl -shared -fpic -fsycl-device-code-split=per_kernel",
-        )
-        build_ext.build_extensions(self)
-
-
-ext_modules = [
-    Extension(
-        name="syclbuffer._syclbuffer",
-        sources=[
-            "syclbuffer/_buffer_example.pyx",
-        ],
-        depends=[
-            "src/use_sycl_buffer.hpp",
-        ],
-        include_dirs=[
-            ".",
-            "./src",
-            dpctl.get_include(),
-        ],
-        extra_compile_args=[
-            "-Wall",
-            "-Wextra",
-            "-fsycl",
-        ],
-        extra_link_args=["-fPIC"],
-        language="c++",
-    )
-]
+from skbuild import setup
 
 setup(
     name="syclbuffer",
@@ -68,6 +29,5 @@ def build_extensions(self):
     license="Apache 2.0",
     author="Intel Corporation",
     url="https://github.com/IntelPython/dpctl",
-    ext_modules=ext_modules,
-    cmdclass={"build_ext": custom_build_ext},
+    packages=["syclbuffer"],
 )