Remove group norm C++ standard override (#2006)

crcrpar · web-flow · commit 1bcf66dc11c3 · 2026-05-23T14:55:11.000+09:00
Let torch.utils.cpp_extension choose the C++ standard for group_norm_cuda instead of forcing C++17, which is incompatible with newer PyTorch headers using C++20 helpers.

Authored with gpt-5 xhigh

Signed-off-by: Masaki Kozuki &lt;mkozuki@nvidia.com&gt;
diff --git a/setup.py b/setup.py
@@ -531,10 +531,9 @@ def check_cudnn_version_and_warn(global_option: str, required_cudnn_version: int
             + glob.glob("apex/contrib/csrc/group_norm/*.cu"),
             include_dirs=[os.path.join(this_dir, "csrc")],
             extra_compile_args={
-                "cxx": ["-O3", "-std=c++17"],
+                "cxx": ["-O3"],
                 "nvcc": [
                     "-O3",
-                    "-std=c++17",
                     "--use_fast_math",
                     "--ftz=false",
                 ],
