NVIDIA · wmaxey · Jan 8, 2026 · Jan 8, 2026 · Jan 8, 2026
@@ -1,12 +1,25 @@
 #!/usr/bin/env python3
+
+##===----------------------------------------------------------------------===##
+##
+## Part of libcu++, the C++ Standard Library for your entire system,
+## under the Apache License v2.0 with LLVM Exceptions.
+## See https://llvm.org/LICENSE.txt for license information.
+## SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+## SPDX-FileCopyrightText: Copyright (c) 2026 NVIDIA CORPORATION & AFFILIATES.
+##
+##===----------------------------------------------------------------------===##
+
 import argparse
-from pathlib import Path
+import os
+
+import cccl_paths
 
-docs = Path("docs/libcudacxx/ptx/instructions")
-test = Path("libcudacxx/test/libcudacxx/cuda/ptx")
-src = Path("libcudacxx/include/cuda/__ptx/instructions")
-ptx_header = Path("libcudacxx/include/cuda/ptx")
-instr_docs = Path("docs/libcudacxx/ptx/instructions.rst")
+docs = os.path.join(cccl_paths.DOCS_LIBCUDACXX_DIR, "ptx", "instructions")
+test = os.path.join(cccl_paths.LIBCUDACXX_TEST_DIR, "libcudacxx", "cuda", "ptx")
+src = os.path.join(cccl_paths.LIBCUDACXX_INCLUDE_DIR, "cuda", "__ptx", "instructions")
+ptx_header = os.path.join(cccl_paths.LIBCUDACXX_INCLUDE_DIR, "cuda", "ptx")
+instr_docs = os.path.join(cccl_paths.DOCS_LIBCUDACXX_DIR, "ptx", "instructions.rst")
 
 
 def add_docs(ptx_instr, url):

@@ -0,0 +1,21 @@
+##===----------------------------------------------------------------------===##
+##
+## Part of libcu++, the C++ Standard Library for your entire system,
+## under the Apache License v2.0 with LLVM Exceptions.
+## See https://llvm.org/LICENSE.txt for license information.
+## SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+## SPDX-FileCopyrightText: Copyright (c) 2026 NVIDIA CORPORATION & AFFILIATES.
+##
+##===----------------------------------------------------------------------===##
+
+import os
+
+LIBCUDACXX_DIR = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
+
+LIBCUDACXX_CMAKE_DIR = os.path.join(LIBCUDACXX_DIR, "cmake")
+LIBCUDACXX_CODEGEN_DIR = os.path.join(LIBCUDACXX_DIR, "codegen")
+LIBCUDACXX_INCLUDE_DIR = os.path.join(LIBCUDACXX_DIR, "include")
+LIBCUDACXX_TEST_DIR = os.path.join(LIBCUDACXX_DIR, "test")
+
+DOCS_DIR = os.path.dirname(LIBCUDACXX_DIR)
+DOCS_LIBCUDACXX_DIR = os.path.join(DOCS_DIR, "libcudacxx")
@@ -0,0 +1,236 @@
+#!/usr/bin/env python3
+
+##===----------------------------------------------------------------------===##
+##
+## Part of libcu++, the C++ Standard Library for your entire system,
+## under the Apache License v2.0 with LLVM Exceptions.
+## See https://llvm.org/LICENSE.txt for license information.
+## SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+## SPDX-FileCopyrightText: Copyright (c) 2026 NVIDIA CORPORATION & AFFILIATES.
+##
+##===----------------------------------------------------------------------===##
+
+import datetime
+import os
+
+import cccl_paths
+
+PROLOGUE_FILE = os.path.join(
+    cccl_paths.LIBCUDACXX_INCLUDE_DIR, "cuda", "std", "__cccl", "prologue.h"
+)
+EPILOGUE_FILE = os.path.join(
+    cccl_paths.LIBCUDACXX_INCLUDE_DIR, "cuda", "std", "__cccl", "epilogue.h"
+)
+
+HEADER = f"""\
+//===----------------------------------------------------------------------===//
+//
+// Part of libcu++, the C++ Standard Library for your entire system,
+// under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+// SPDX-FileCopyrightText: Copyright (c) {datetime.datetime.now().year} NVIDIA CORPORATION & AFFILIATES.
+//
+//===----------------------------------------------------------------------===//
+
+// !!! DO NOT EDIT THIS FILE !!! This file is generated by utils/generate_prologue_epilogue.py.
+
+// NO include guards here (this file is included multiple times)"""
+
+FOOTER = """\
+// NO include guards here (this file is included multiple times)
+"""
+
+PUSH_POP_MACROS = {
+    "__declspec modifiers": [
+        "align",
+        "allocate",
+        "allocator",
+        "appdomain",
+        "code_seg",
+        "deprecated",
+        "dllimport",
+        "dllexport",
+        "empty_bases",
+        "hybrid_patchable",
+        "jitintrinsic",
+        "naked",
+        "noalias",
+        "noinline",
+        "noreturn",
+        "nothrow",
+        "novtable",
+        "no_sanitize_address",
+        "process",
+        "property",
+        "restrict",
+        "safebuffers",
+        "selectany",
+        "spectre",
+        "thread",
+        "uuid",
+    ],
+    "[[msvc::attribute]] attributes": [
+        "msvc",
+        "flatten",
+        "forceinline",
+        "forceinline_calls",
+        "intrinsic",
+        "noinline",
+        "noinline_calls",
+        "no_tls_guard",
+    ],
+    "Windows nasty macros": ["min", "max", "interface"],
+    "sal.h on Windows": ["__valid", "__callback"],
+    "other macros": ["clang"],
+    "sys/sysmacros.h on linux": ["major", "minor", "makedev"],
+}
+
+
+def write_section(file, section):
+    file.write(section)
+    file.write("\n\n")
+
+
+def make_prologue(file):
+    # Write common header.
+    write_section(file, HEADER)
+
+    # Add prologue/epilogue include logic check.
+    write_section(
+        file,
+        """\
+#if defined(_CCCL_PROLOGUE_INCLUDED)
+#  error \\
+    "cccl internal error: <cuda/std/__cccl/epilogue.h> must be included before next <cuda/std/__cccl/prologue.h> is reincluded"
+#endif
+#define _CCCL_PROLOGUE_INCLUDED() 1""",
+    )
+
+    # Add necessary includes.
+    write_section(
+        file,
+        """\
+#include <cuda/std/__cccl/compiler.h>
+#include <cuda/std/__cccl/diagnostic.h>
+#include <cuda/std/__cccl/dialect.h>""",
+    )
+
+    # Add push macros.
+    for group_name, macros in PUSH_POP_MACROS.items():
+        write_section(file, f"// {group_name}")
+        for macro in macros:
+            write_section(
+                file,
+                f'''\
+#if defined({macro})
+#  pragma push_macro("{macro}")
+#  undef {macro}
+#  define _CCCL_POP_MACRO_{macro}
+#endif // defined({macro})''',
+            )
+
+    # Add warnings suppressions.
+    write_section(
+        file,
+        '''\
+_CCCL_DIAG_PUSH
+_CCCL_NV_DIAG_PUSH()
+
+// disable some msvc warnings
+// https://github.com/microsoft/STL/blob/master/stl/inc/yvals_core.h#L353
+// warning C4100: 'quack': unreferenced formal parameter
+// warning C4127: conditional expression is constant
+// warning C4180: qualifier applied to function type has no meaning; ignored
+// warning C4197: 'purr': top-level volatile in cast is ignored
+// warning C4324: 'roar': structure was padded due to alignment specifier
+// warning C4455: literal suffix identifiers that do not start with an underscore are reserved
+// warning C4503: 'hum': decorated name length exceeded, name was truncated
+// warning C4522: 'woof' : multiple assignment operators specified
+// warning C4668: 'meow' is not defined as a preprocessor macro, replacing with '0' for '#if/#elif'
+// warning C4800: 'boo': forcing value to bool 'true' or 'false' (performance warning)
+// warning C4996: 'meow': was declared deprecated
+_CCCL_DIAG_SUPPRESS_MSVC(4100 4127 4180 4197 4296 4324 4455 4503 4522 4668 4800 4996)
+
+// disable warnings about using C++23 features in C++20 (needed for if consteval)
+#if _CCCL_HAS_IF_CONSTEVAL_IN_CXX20()
+#  if _CCCL_COMPILER(GCC, >=, 12)
+_CCCL_DIAG_SUPPRESS_GCC("-Wc++23-extensions")
+#  endif // _CCCL_COMPILER(GCC, >=, 12)
+#  if _CCCL_COMPILER(CLANG, >=, 17)
+_CCCL_DIAG_SUPPRESS_CLANG("-Wc++23-extensions")
+#  else // ^^^ _CCCL_COMPILER(CLANG, >=, 17) ^^^ / vvv _CCCL_COMPILER(CLANG, <, 17) vvv
+_CCCL_DIAG_SUPPRESS_CLANG("-Wc++2b-extensions")
+#  endif // ^^^ _CCCL_COMPILER(CLANG, <, 17) ^^^
+_CCCL_DIAG_SUPPRESS_NVHPC(if_consteval_nonstandard)
+
+_CCCL_DIAG_SUPPRESS_NVCC(3215) // "if consteval" and "if not consteval" are not standard in this mode
+#endif // _CCCL_HAS_IF_CONSTEVAL_IN_CXX20()
+
+_CCCL_DIAG_SUPPRESS_NVHPC(is_constant_evaluated_in_nonconstexpr_context)
+
+_CCCL_DIAG_SUPPRESS_NVCC(3206) // "if consteval" and "if not consteval" are meaningless in a non-constexpr function
+_CCCL_DIAG_SUPPRESS_NVCC(3060) // call to __builtin_is_constant_evaluated appearing in a non-constexpr function always
+                               // produces "false"''',
+    )
+
+    # Write the common footer.
+    file.write(FOOTER)
+
+
+def make_epilogue(file):
+    # Write common header.
+    write_section(file, HEADER)
+
+    # Write includes.
+    write_section(
+        file,
+        """\
+#include <cuda/std/__cccl/compiler.h>
+#include <cuda/std/__cccl/diagnostic.h>""",
+    )
+
+    # Add prologue/epilogue include logic check.
+    write_section(
+        file,
+        """\
+#if !defined(_CCCL_PROLOGUE_INCLUDED)
+#  error "cccl internal error: <cuda/std/__cccl/prologue.h> must be included before <cuda/std/__cccl/epilogue.h>"
+#endif
+#undef _CCCL_PROLOGUE_INCLUDED""",
+    )
+
+    # Pop warning suppressions.
+    write_section(
+        file,
+        """\
+_CCCL_NV_DIAG_POP()
+_CCCL_DIAG_POP""",
+    )
+
+    # Add pop macros.
+    for group_name, macros in PUSH_POP_MACROS.items():
+        write_section(file, f"// {group_name}")
+        for macro in macros:
+            write_section(
+                file,
+                f'''\
+#if defined({macro})
+#  error \\
+    "cccl internal error: macro `{macro}` was redefined between <cuda/std/__cccl/prologue.h> and <cuda/std/__cccl/epilogue.h>"
+#elif defined(_CCCL_POP_MACRO_{macro})
+#  pragma pop_macro("{macro}")
+#  undef _CCCL_POP_MACRO_{macro}
+#endif''',
+            )
+
+    # Write the common footer.
+    file.write(FOOTER)
+
+
+if __name__ == "__main__":
+    with open(PROLOGUE_FILE, "w") as file:
+        make_prologue(file)
+
+    with open(EPILOGUE_FILE, "w") as file:
+        make_epilogue(file)
@@ -4,10 +4,12 @@
 // under the Apache License v2.0 with LLVM Exceptions.
 // See https://llvm.org/LICENSE.txt for license information.
 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
-// SPDX-FileCopyrightText: Copyright (c) 2025 NVIDIA CORPORATION & AFFILIATES.
+// SPDX-FileCopyrightText: Copyright (c) 2026 NVIDIA CORPORATION & AFFILIATES.
 //
 //===----------------------------------------------------------------------===//
 
+// !!! DO NOT EDIT THIS FILE !!! This file is generated by utils/generate_prologue_epilogue.py.
+
 // NO include guards here (this file is included multiple times)
 
 #include <cuda/std/__cccl/compiler.h>
@@ -18,7 +20,6 @@
 #endif
 #undef _CCCL_PROLOGUE_INCLUDED
 
-// warnings pop
 _CCCL_NV_DIAG_POP()
 _CCCL_DIAG_POP
 
@@ -352,4 +353,30 @@ _CCCL_DIAG_POP
 #  undef _CCCL_POP_MACRO_clang
 #endif
 
+// sys/sysmacros.h on linux
+
+#if defined(major)
+#  error \
+    "cccl internal error: macro `major` was redefined between <cuda/std/__cccl/prologue.h> and <cuda/std/__cccl/epilogue.h>"
+#elif defined(_CCCL_POP_MACRO_major)
+#  pragma pop_macro("major")
+#  undef _CCCL_POP_MACRO_major
+#endif
+
+#if defined(minor)
+#  error \
+    "cccl internal error: macro `minor` was redefined between <cuda/std/__cccl/prologue.h> and <cuda/std/__cccl/epilogue.h>"
+#elif defined(_CCCL_POP_MACRO_minor)
+#  pragma pop_macro("minor")
+#  undef _CCCL_POP_MACRO_minor
+#endif
+
+#if defined(makedev)
+#  error \
+    "cccl internal error: macro `makedev` was redefined between <cuda/std/__cccl/prologue.h> and <cuda/std/__cccl/epilogue.h>"
+#elif defined(_CCCL_POP_MACRO_makedev)
+#  pragma pop_macro("makedev")
+#  undef _CCCL_POP_MACRO_makedev
+#endif
+
 // NO include guards here (this file is included multiple times)
@@ -4,10 +4,12 @@
 // under the Apache License v2.0 with LLVM Exceptions.
 // See https://llvm.org/LICENSE.txt for license information.
 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
-// SPDX-FileCopyrightText: Copyright (c) 2025 NVIDIA CORPORATION & AFFILIATES.
+// SPDX-FileCopyrightText: Copyright (c) 2026 NVIDIA CORPORATION & AFFILIATES.
 //
 //===----------------------------------------------------------------------===//
 
+// !!! DO NOT EDIT THIS FILE !!! This file is generated by utils/generate_prologue_epilogue.py.
+
 // NO include guards here (this file is included multiple times)
 
 #if defined(_CCCL_PROLOGUE_INCLUDED)
@@ -270,6 +272,26 @@
 #  define _CCCL_POP_MACRO_clang
 #endif // defined(clang)
 
+// sys/sysmacros.h on linux
+
+#if defined(major)
+#  pragma push_macro("major")
+#  undef major
+#  define _CCCL_POP_MACRO_major
+#endif // defined(major)
+
+#if defined(minor)
+#  pragma push_macro("minor")
+#  undef minor
+#  define _CCCL_POP_MACRO_minor
+#endif // defined(minor)
+
+#if defined(makedev)
+#  pragma push_macro("makedev")
+#  undef makedev
+#  define _CCCL_POP_MACRO_makedev
+#endif // defined(makedev)
+
 _CCCL_DIAG_PUSH
 _CCCL_NV_DIAG_PUSH()