Exclude Cython-generated .cpp files from wheels (#1578)

Use cythonize build_dir parameter to place generated .cpp files
in build/cython/ instead of the source tree. This prevents them
from being included in the wheel.

Additionally, add exclude-package-data for *.cpp in cuda-bindings
to exclude any remaining .cpp files from the package.

Author: Andy-Jost

cuda_bindings/pyproject.toml

@@ -56,6 +56,9 @@ Documentation = "https://nvidia.github.io/cuda-python/"
 [tool.setuptools.packages.find]
 include = ["cuda*"]
 
+[tool.setuptools.exclude-package-data]
+"*" = ["*.cpp"]
+
 [tool.setuptools.dynamic]
 readme = { file = ["DESCRIPTION.rst"], content-type = "text/x-rst" }
 

cuda_bindings/setup.py

@@ -356,6 +356,7 @@ def do_cythonize(extensions):
     return cythonize(
         extensions,
         nthreads=nthreads,
+        build_dir="build/cython",
         compiler_directives=compiler_directives,
         **extra_cythonize_kwargs,
     )

cuda_core/build_hooks.py

@@ -163,6 +163,7 @@ def get_sources(mod_name):
         ext_modules,
         verbose=True,
         language_level=3,
+        build_dir="build/cython",
         nthreads=nthreads,
         compiler_directives=compiler_directives,
         compile_time_env=compile_time_env,