[libc-commits] [libc] [libc] Migrate to using LIBC_NAMESPACE_DECL for namespace declaration (PR #98597)

Fri Jul 12 00:30:41 PDT 2024

llvmbot wrote:




@llvm/pr-subscribers-libc

Author: Petr Hosek (petrhosek)

<details>
<summary>Changes</summary>

This is a part of #97655.

---

Patch is 1.51 MiB, truncated to 20.00 KiB below, full version: https://github.com/llvm/llvm-project/pull/98597.diff


2327 Files Affected:

- (modified) libc/benchmarks/LibcDefaultImplementations.cpp (+3-2) 
- (modified) libc/benchmarks/LibcMemoryBenchmarkMain.cpp (+3-2) 
- (modified) libc/benchmarks/automemcpy/lib/CodeGen.cpp (+3-2) 
- (modified) libc/benchmarks/automemcpy/unittests/CodeGenTest.cpp (+3-2) 
- (modified) libc/benchmarks/gpu/BenchmarkLogger.cpp (+3-2) 
- (modified) libc/benchmarks/gpu/BenchmarkLogger.h (+4-2) 
- (modified) libc/benchmarks/gpu/LibcGpuBenchmark.cpp (+3-2) 
- (modified) libc/benchmarks/gpu/LibcGpuBenchmark.h (+3-2) 
- (modified) libc/benchmarks/gpu/timing/amdgpu/timing.h (+2-2) 
- (modified) libc/benchmarks/gpu/timing/nvptx/timing.h (+2-2) 
- (modified) libc/cmake/modules/LLVMLibCObjectRules.cmake (+5-5) 
- (modified) libc/config/linux/app.h (+3-2) 
- (modified) libc/docs/dev/clang_tidy_checks.rst (+7-7) 
- (modified) libc/fuzzing/__support/hashtable_fuzz.cpp (+3-2) 
- (modified) libc/src/__support/CPP/algorithm.h (+3-2) 
- (modified) libc/src/__support/CPP/array.h (+3-2) 
- (modified) libc/src/__support/CPP/atomic.h (+3-2) 
- (modified) libc/src/__support/CPP/bit.h (+5-2) 
- (modified) libc/src/__support/CPP/bitset.h (+5-2) 
- (modified) libc/src/__support/CPP/cstddef.h (+5-2) 
- (modified) libc/src/__support/CPP/expected.h (+5-2) 
- (modified) libc/src/__support/CPP/functional.h (+3-2) 
- (modified) libc/src/__support/CPP/iterator.h (+3-2) 
- (modified) libc/src/__support/CPP/limits.h (+3-2) 
- (modified) libc/src/__support/CPP/mutex.h (+4-2) 
- (modified) libc/src/__support/CPP/new.h (+3-2) 
- (modified) libc/src/__support/CPP/optional.h (+3-2) 
- (modified) libc/src/__support/CPP/span.h (+5-2) 
- (modified) libc/src/__support/CPP/string.h (+3-2) 
- (modified) libc/src/__support/CPP/string_view.h (+3-2) 
- (modified) libc/src/__support/CPP/stringstream.h (+3-2) 
- (modified) libc/src/__support/CPP/type_traits/add_lvalue_reference.h (+5-2) 
- (modified) libc/src/__support/CPP/type_traits/add_pointer.h (+5-2) 
- (modified) libc/src/__support/CPP/type_traits/add_rvalue_reference.h (+5-2) 
- (modified) libc/src/__support/CPP/type_traits/aligned_storage.h (+5-2) 
- (modified) libc/src/__support/CPP/type_traits/always_false.h (+5-2) 
- (modified) libc/src/__support/CPP/type_traits/bool_constant.h (+5-2) 
- (modified) libc/src/__support/CPP/type_traits/conditional.h (+5-2) 
- (modified) libc/src/__support/CPP/type_traits/decay.h (+5-2) 
- (modified) libc/src/__support/CPP/type_traits/enable_if.h (+5-2) 
- (modified) libc/src/__support/CPP/type_traits/false_type.h (+5-2) 
- (modified) libc/src/__support/CPP/type_traits/integral_constant.h (+5-2) 
- (modified) libc/src/__support/CPP/type_traits/invoke.h (+5-2) 
- (modified) libc/src/__support/CPP/type_traits/invoke_result.h (+5-2) 
- (modified) libc/src/__support/CPP/type_traits/is_arithmetic.h (+5-2) 
- (modified) libc/src/__support/CPP/type_traits/is_array.h (+5-2) 
- (modified) libc/src/__support/CPP/type_traits/is_base_of.h (+5-2) 
- (modified) libc/src/__support/CPP/type_traits/is_class.h (+5-2) 
- (modified) libc/src/__support/CPP/type_traits/is_const.h (+5-2) 
- (modified) libc/src/__support/CPP/type_traits/is_constant_evaluated.h (+5-2) 
- (modified) libc/src/__support/CPP/type_traits/is_convertible.h (+5-2) 
- (modified) libc/src/__support/CPP/type_traits/is_destructible.h (+5-2) 
- (modified) libc/src/__support/CPP/type_traits/is_enum.h (+5-2) 
- (modified) libc/src/__support/CPP/type_traits/is_fixed_point.h (+5-2) 
- (modified) libc/src/__support/CPP/type_traits/is_floating_point.h (+5-2) 
- (modified) libc/src/__support/CPP/type_traits/is_function.h (+5-2) 
- (modified) libc/src/__support/CPP/type_traits/is_integral.h (+5-2) 
- (modified) libc/src/__support/CPP/type_traits/is_lvalue_reference.h (+5-2) 
- (modified) libc/src/__support/CPP/type_traits/is_member_pointer.h (+5-2) 
- (modified) libc/src/__support/CPP/type_traits/is_null_pointer.h (+5-2) 
- (modified) libc/src/__support/CPP/type_traits/is_object.h (+5-2) 
- (modified) libc/src/__support/CPP/type_traits/is_pointer.h (+5-2) 
- (modified) libc/src/__support/CPP/type_traits/is_reference.h (+5-2) 
- (modified) libc/src/__support/CPP/type_traits/is_rvalue_reference.h (+5-2) 
- (modified) libc/src/__support/CPP/type_traits/is_same.h (+5-2) 
- (modified) libc/src/__support/CPP/type_traits/is_scalar.h (+5-2) 
- (modified) libc/src/__support/CPP/type_traits/is_signed.h (+5-2) 
- (modified) libc/src/__support/CPP/type_traits/is_trivially_constructible.h (+5-2) 
- (modified) libc/src/__support/CPP/type_traits/is_trivially_copyable.h (+5-2) 
- (modified) libc/src/__support/CPP/type_traits/is_trivially_destructible.h (+5-2) 
- (modified) libc/src/__support/CPP/type_traits/is_union.h (+5-2) 
- (modified) libc/src/__support/CPP/type_traits/is_unsigned.h (+5-2) 
- (modified) libc/src/__support/CPP/type_traits/is_void.h (+5-2) 
- (modified) libc/src/__support/CPP/type_traits/make_signed.h (+5-2) 
- (modified) libc/src/__support/CPP/type_traits/make_unsigned.h (+5-2) 
- (modified) libc/src/__support/CPP/type_traits/remove_all_extents.h (+5-2) 
- (modified) libc/src/__support/CPP/type_traits/remove_cv.h (+5-2) 
- (modified) libc/src/__support/CPP/type_traits/remove_cvref.h (+5-2) 
- (modified) libc/src/__support/CPP/type_traits/remove_extent.h (+5-2) 
- (modified) libc/src/__support/CPP/type_traits/remove_reference.h (+5-2) 
- (modified) libc/src/__support/CPP/type_traits/true_type.h (+5-2) 
- (modified) libc/src/__support/CPP/type_traits/type_identity.h (+6-2) 
- (modified) libc/src/__support/CPP/type_traits/void_t.h (+5-2) 
- (modified) libc/src/__support/CPP/utility/declval.h (+5-2) 
- (modified) libc/src/__support/CPP/utility/forward.h (+5-2) 
- (modified) libc/src/__support/CPP/utility/in_place.h (+5-2) 
- (modified) libc/src/__support/CPP/utility/integer_sequence.h (+5-2) 
- (modified) libc/src/__support/CPP/utility/move.h (+5-2) 
- (modified) libc/src/__support/FPUtil/BasicOperations.h (+3-2) 
- (modified) libc/src/__support/FPUtil/DivisionAndRemainderOperations.h (+3-2) 
- (modified) libc/src/__support/FPUtil/FEnvImpl.h (+9-4) 
- (modified) libc/src/__support/FPUtil/FMA.h (+3-2) 
- (modified) libc/src/__support/FPUtil/FPBits.h (+3-2) 
- (modified) libc/src/__support/FPUtil/Hypot.h (+3-2) 
- (modified) libc/src/__support/FPUtil/ManipulationFunctions.h (+3-2) 
- (modified) libc/src/__support/FPUtil/NearestIntegerOperations.h (+3-2) 
- (modified) libc/src/__support/FPUtil/NormalFloat.h (+3-2) 
- (modified) libc/src/__support/FPUtil/PolyEval.h (+3-2) 
- (modified) libc/src/__support/FPUtil/aarch64/FEnvImpl.h (+3-2) 
- (modified) libc/src/__support/FPUtil/aarch64/fenv_darwin_impl.h (+3-2) 
- (modified) libc/src/__support/FPUtil/aarch64/nearest_integer.h (+3-2) 
- (modified) libc/src/__support/FPUtil/aarch64/sqrt.h (+3-2) 
- (modified) libc/src/__support/FPUtil/arm/FEnvImpl.h (+3-2) 
- (modified) libc/src/__support/FPUtil/double_double.h (+5-2) 
- (modified) libc/src/__support/FPUtil/dyadic_float.h (+5-2) 
- (modified) libc/src/__support/FPUtil/except_value_utils.h (+3-2) 
- (modified) libc/src/__support/FPUtil/fpbits_str.h (+3-2) 
- (modified) libc/src/__support/FPUtil/generic/FMA.h (+3-2) 
- (modified) libc/src/__support/FPUtil/generic/FMod.h (+3-2) 
- (modified) libc/src/__support/FPUtil/generic/README.md (+2-2) 
- (modified) libc/src/__support/FPUtil/generic/add_sub.h (+5-2) 
- (modified) libc/src/__support/FPUtil/generic/div.h (+5-2) 
- (modified) libc/src/__support/FPUtil/generic/sqrt.h (+3-2) 
- (modified) libc/src/__support/FPUtil/generic/sqrt_80_bit_long_double.h (+3-2) 
- (modified) libc/src/__support/FPUtil/multiply_add.h (+5-4) 
- (modified) libc/src/__support/FPUtil/nearest_integer.h (+5-4) 
- (modified) libc/src/__support/FPUtil/riscv/FEnvImpl.h (+2-2) 
- (modified) libc/src/__support/FPUtil/riscv/sqrt.h (+3-2) 
- (modified) libc/src/__support/FPUtil/rounding_mode.h (+5-2) 
- (modified) libc/src/__support/FPUtil/triple_double.h (+6-2) 
- (modified) libc/src/__support/FPUtil/x86_64/FEnvImpl.h (+3-2) 
- (modified) libc/src/__support/FPUtil/x86_64/NextAfterLongDouble.h (+3-2) 
- (modified) libc/src/__support/FPUtil/x86_64/NextUpDownLongDouble.h (+5-2) 
- (modified) libc/src/__support/FPUtil/x86_64/nearest_integer.h (+3-2) 
- (modified) libc/src/__support/FPUtil/x86_64/sqrt.h (+3-2) 
- (modified) libc/src/__support/File/dir.cpp (+3-2) 
- (modified) libc/src/__support/File/dir.h (+3-2) 
- (modified) libc/src/__support/File/file.cpp (+3-2) 
- (modified) libc/src/__support/File/file.h (+3-2) 
- (modified) libc/src/__support/File/linux/dir.cpp (+3-2) 
- (modified) libc/src/__support/File/linux/file.cpp (+4-3) 
- (modified) libc/src/__support/File/linux/file.h (+3-2) 
- (modified) libc/src/__support/File/linux/lseekImpl.h (+3-2) 
- (modified) libc/src/__support/File/linux/stderr.cpp (+3-2) 
- (modified) libc/src/__support/File/linux/stdin.cpp (+3-2) 
- (modified) libc/src/__support/File/linux/stdout.cpp (+3-2) 
- (modified) libc/src/__support/GPU/allocator.cpp (+3-2) 
- (modified) libc/src/__support/GPU/allocator.h (+3-2) 
- (modified) libc/src/__support/GPU/amdgpu/utils.h (+2-2) 
- (modified) libc/src/__support/GPU/generic/utils.h (+3-2) 
- (modified) libc/src/__support/GPU/nvptx/utils.h (+3-2) 
- (modified) libc/src/__support/GPU/utils.h (+3-2) 
- (modified) libc/src/__support/HashTable/bitmask.h (+3-2) 
- (modified) libc/src/__support/HashTable/generic/bitmask_impl.inc (+3-2) 
- (modified) libc/src/__support/HashTable/randomness.h (+3-2) 
- (modified) libc/src/__support/HashTable/sse2/bitmask_impl.inc (+5-2) 
- (modified) libc/src/__support/HashTable/table.h (+3-2) 
- (modified) libc/src/__support/OSUtil/baremetal/exit.cpp (+5-2) 
- (modified) libc/src/__support/OSUtil/baremetal/io.cpp (+3-2) 
- (modified) libc/src/__support/OSUtil/baremetal/io.h (+3-2) 
- (modified) libc/src/__support/OSUtil/darwin/arm/syscall.h (+3-2) 
- (modified) libc/src/__support/OSUtil/darwin/io.h (+3-2) 
- (modified) libc/src/__support/OSUtil/darwin/syscall.h (+3-2) 
- (modified) libc/src/__support/OSUtil/exit.h (+6-2) 
- (modified) libc/src/__support/OSUtil/fcntl.h (+6-2) 
- (modified) libc/src/__support/OSUtil/fuchsia/io.h (+3-2) 
- (modified) libc/src/__support/OSUtil/gpu/exit.cpp (+5-2) 
- (modified) libc/src/__support/OSUtil/gpu/io.cpp (+3-2) 
- (modified) libc/src/__support/OSUtil/gpu/io.h (+3-2) 
- (modified) libc/src/__support/OSUtil/linux/aarch64/syscall.h (+3-2) 
- (modified) libc/src/__support/OSUtil/linux/arm/syscall.h (+3-2) 
- (modified) libc/src/__support/OSUtil/linux/exit.cpp (+5-2) 
- (modified) libc/src/__support/OSUtil/linux/fcntl.cpp (+5-2) 
- (modified) libc/src/__support/OSUtil/linux/io.h (+3-2) 
- (modified) libc/src/__support/OSUtil/linux/riscv/syscall.h (+3-2) 
- (modified) libc/src/__support/OSUtil/linux/syscall.h (+3-2) 
- (modified) libc/src/__support/OSUtil/linux/x86_64/syscall.h (+3-2) 
- (modified) libc/src/__support/RPC/rpc.h (+3-2) 
- (modified) libc/src/__support/RPC/rpc_client.cpp (+3-2) 
- (modified) libc/src/__support/RPC/rpc_client.h (+3-2) 
- (modified) libc/src/__support/RPC/rpc_util.h (+3-2) 
- (modified) libc/src/__support/StringUtil/error_to_string.cpp (+3-2) 
- (modified) libc/src/__support/StringUtil/error_to_string.h (+3-2) 
- (modified) libc/src/__support/StringUtil/message_mapper.h (+3-2) 
- (modified) libc/src/__support/StringUtil/signal_to_string.cpp (+3-2) 
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- (modified) libc/src/__support/StringUtil/tables/linux_extension_errors.h (+3-2) 
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- (modified) libc/src/__support/StringUtil/tables/stdc_errors.h (+3-2) 
- (modified) libc/src/__support/StringUtil/tables/stdc_signals.h (+3-2) 
- (modified) libc/src/__support/arg_list.h (+3-2) 
- (modified) libc/src/__support/big_int.h (+3-2) 
- (modified) libc/src/__support/block.h (+3-2) 
- (modified) libc/src/__support/blockstore.h (+3-2) 
- (modified) libc/src/__support/c_string.h (+3-2) 
- (modified) libc/src/__support/char_vector.h (+3-2) 
- (modified) libc/src/__support/common.h (+3-2) 
- (modified) libc/src/__support/ctype_utils.h (+3-2) 
- (modified) libc/src/__support/detailed_powers_of_ten.h (+3-2) 
- (modified) libc/src/__support/endian.h (+3-2) 
- (modified) libc/src/__support/error_or.h (+3-2) 
- (modified) libc/src/__support/fixed_point/fx_bits.h (+5-2) 
- (modified) libc/src/__support/fixed_point/fx_rep.h (+5-2) 
- (modified) libc/src/__support/fixed_point/sqrt.h (+5-2) 
- (modified) libc/src/__support/fixedvector.h (+3-2) 
- (modified) libc/src/__support/float_to_string.h (+3-2) 
- (modified) libc/src/__support/freelist.h (+3-2) 
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- (modified) libc/src/__support/high_precision_decimal.h (+3-2) 
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- (modified) libc/src/__support/integer_to_string.h (+3-2) 
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- (modified) libc/src/__support/macros/config.h (+1) 
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- (modified) libc/src/__support/math_extras.h (+3-2) 
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- (modified) libc/src/fenv/fedisableexcept.cpp (+3-2) 
- (modified) libc/src/fenv/fedisableexcept.h (+4-2) 
- (modified) libc/src/fenv/feenableexcept.cpp (+3-2) 
- (modified) libc/src/fenv/feenableexcept.h (+4-2) 
- (modified) libc/src/fenv/fegetenv.cpp (+3-2) 
- (modified) libc/src/fenv/fegetenv.h (+3-2) 
- (modified) libc/src/fenv/fegetexcept.cpp (+3-2) 
- (modified) libc/src/fenv/fegetexcept.h (+4-2) 
- (modified) libc/src/fenv/fegetexceptflag.cpp (+3-2) 
- (modified) libc/src/fenv/fegetexceptflag.h (+3-2) 
- (modified) libc/src/fenv/fegetround.cpp (+3-2) 
- (modified) libc/src/fenv/fegetround.h (+4-2) 
- (modified) libc/src/fenv/feholdexcept.cpp (+3-2) 
- (modified) libc/src/fenv/feholdexcept.h (+3-2) 
- (modified) libc/src/fenv/feraiseexcept.cpp (+3-2) 
- (modified) libc/src/fenv/feraiseexcept.h (+4-2) 
- (modified) libc/src/fenv/fesetenv.cpp (+3-2) 
- (modified) libc/src/fenv/fesetenv.h (+3-2) 
- (modified) libc/src/fenv/fesetexcept.cpp (+3-2) 
- (modified) libc/src/fenv/fesetexcept.h (+4-2) 
- (modified) libc/src/fenv/fesetexceptflag.cpp (+3-2) 
- (modified) libc/src/fenv/fesetexceptflag.h (+3-2) 
- (modified) libc/src/fenv/fesetround.cpp (+3-2) 
- (modified) libc/src/fenv/fesetround.h (+4-2) 
- (modified) libc/src/fenv/fetestexcept.cpp (+3-2) 
- (modified) libc/src/fenv/fetestexcept.h (+4-2) 
- (modified) libc/src/fenv/fetestexceptflag.cpp (+3-2) 
- (modified) libc/src/fenv/fetestexceptflag.h (+3-2) 
- (modified) libc/src/fenv/feupdateenv.cpp (+3-2) 
- (modified) libc/src/fenv/feupdateenv.h (+3-2) 
- (modified) libc/src/gpu/rpc_fprintf.cpp (+3-2) 
- (modified) libc/src/gpu/rpc_fprintf.h (+3-2) 
- (modified) libc/src/gpu/rpc_host_call.cpp (+3-2) 
- (modified) libc/src/gpu/rpc_host_call.h (+3-2) 
- (modified) libc/src/inttypes/imaxabs.cpp (+3-2) 
- (modified) libc/src/inttypes/imaxabs.h (+3-2) 
- (modified) libc/src/inttypes/imaxdiv.cpp (+3-2) 


``````````diff

diff --git a/libc/benchmarks/LibcDefaultImplementations.cpp b/libc/benchmarks/LibcDefaultImplementations.cpp
index c50ae00ffa105..1ff940afcc44f 100644
--- a/libc/benchmarks/LibcDefaultImplementations.cpp
+++ b/libc/benchmarks/LibcDefaultImplementations.cpp
@@ -1,8 +1,9 @@
 #include "LibcFunctionPrototypes.h"
+#include "src/__support/macros/config.h"
 #include "llvm/ADT/ArrayRef.h"
 #include <cstddef>
 
-namespace LIBC_NAMESPACE {
+namespace LIBC_NAMESPACE_DECL {
 
 extern void *memcpy(void *__restrict, const void *__restrict, size_t);
 extern void *memmove(void *, const void *, size_t);
@@ -11,7 +12,7 @@ extern void bzero(void *, size_t);
 extern int memcmp(const void *, const void *, size_t);
 extern int bcmp(const void *, const void *, size_t);
 
-} // namespace LIBC_NAMESPACE
+} // namespace LIBC_NAMESPACE_DECL
 
 // List of implementations to test.
 
diff --git a/libc/benchmarks/LibcMemoryBenchmarkMain.cpp b/libc/benchmarks/LibcMemoryBenchmarkMain.cpp
index bc6fd8b38cb6d..c042b29cad98e 100644
--- a/libc/benchmarks/LibcMemoryBenchmarkMain.cpp
+++ b/libc/benchmarks/LibcMemoryBenchmarkMain.cpp
@@ -10,6 +10,7 @@
 #include "LibcBenchmark.h"
 #include "LibcMemoryBenchmark.h"
 #include "MemorySizeDistributions.h"
+#include "src/__support/macros/config.h"
 #include "llvm/Support/CommandLine.h"
 #include "llvm/Support/ErrorHandling.h"
 #include "llvm/Support/FileSystem.h"
@@ -21,7 +22,7 @@
 #include <cstring>
 #include <unistd.h>
 
-namespace LIBC_NAMESPACE {
+namespace LIBC_NAMESPACE_DECL {
 
 extern void *memcpy(void *__restrict, const void *__restrict, size_t);
 extern void *memmove(void *, const void *, size_t);
@@ -30,7 +31,7 @@ extern void bzero(void *, size_t);
 extern int memcmp(const void *, const void *, size_t);
 extern int bcmp(const void *, const void *, size_t);
 
-} // namespace LIBC_NAMESPACE
+} // namespace LIBC_NAMESPACE_DECL
 
 namespace llvm {
 namespace libc_benchmarks {
diff --git a/libc/benchmarks/automemcpy/lib/CodeGen.cpp b/libc/benchmarks/automemcpy/lib/CodeGen.cpp
index 3837bd97d9f9a..d1336eaf31f34 100644
--- a/libc/benchmarks/automemcpy/lib/CodeGen.cpp
+++ b/libc/benchmarks/automemcpy/lib/CodeGen.cpp
@@ -36,6 +36,7 @@
 // function at the end of the file.
 
 #include "automemcpy/CodeGen.h"
+#include "src/__support/macros/config.h"
 #include <cassert>
 #include <llvm/ADT/STLExtras.h>
 #include <llvm/ADT/StringSet.h>
@@ -542,11 +543,11 @@ static void Serialize(raw_ostream &Stream,
   Stream << "using llvm::libc_benchmarks::MemmoveConfiguration;\n";
   Stream << "using llvm::libc_benchmarks::MemsetConfiguration;\n";
   Stream << "\n";
-  Stream << "namespace LIBC_NAMESPACE {\n";
+  Stream << "namespace LIBC_NAMESPACE_DECL {\n";
   Stream << "\n";
   codegen::functions::Serialize(Stream, Descriptors);
   Stream << "\n";
-  Stream << "} // namespace LIBC_NAMESPACE\n";
+  Stream << "} // namespace LIBC_NAMESPACE_DECL\n";
   Stream << "\n";
   Stream << "namespace llvm {\n";
   Stream << "namespace automemcpy {\n";
diff --git a/libc/benchmarks/automemcpy/unittests/CodeGenTest.cpp b/libc/benchmarks/automemcpy/unittests/CodeGenTest.cpp
index 5084b1d67dcd5..17bc189fa3f12 100644
--- a/libc/benchmarks/automemcpy/unittests/CodeGenTest.cpp
+++ b/libc/benchmarks/automemcpy/unittests/CodeGenTest.cpp
@@ -8,6 +8,7 @@
 
 #include "automemcpy/CodeGen.h"
 #include "automemcpy/RandomFunctionGenerator.h"
+#include "src/__support/macros/config.h"
 #include "gmock/gmock.h"
 #include "gtest/gtest.h"
 #include <optional>
@@ -63,7 +64,7 @@ using llvm::libc_benchmarks::MemcpyConfiguration;
 using llvm::libc_benchmarks::MemmoveConfiguration;
 using llvm::libc_benchmarks::MemsetConfiguration;
 
-namespace LIBC_NAMESPACE {
+namespace LIBC_NAMESPACE_DECL {
 
 static void memcpy_0xE00E29EE73994E2B(char *__restrict dst, const char *__restrict src, size_t size) {
   using namespace LIBC_NAMESPACE::x86;
@@ -134,7 +135,7 @@ static void bzero_0x475977492C218AD4(char * dst, size_t size) {
   return splat_set<Align<_32,Arg::Dst>::Then<Loop<_32>>>(dst, 0, size);
 }
 
-} // namespace LIBC_NAMESPACE
+} // namespace LIBC_NAMESPACE_DECL
 
 namespace llvm {
 namespace automemcpy {
diff --git a/libc/benchmarks/gpu/BenchmarkLogger.cpp b/libc/benchmarks/gpu/BenchmarkLogger.cpp
index 2e7e8e7600fdb..0d644fa3c37bc 100644
--- a/libc/benchmarks/gpu/BenchmarkLogger.cpp
+++ b/libc/benchmarks/gpu/BenchmarkLogger.cpp
@@ -3,12 +3,13 @@
 #include "src/__support/CPP/string_view.h"
 #include "src/__support/OSUtil/io.h"               // write_to_stderr
 #include "src/__support/big_int.h"                 // is_big_int
+#include "src/__support/macros/config.h"
 #include "src/__support/macros/properties/types.h" // LIBC_TYPES_HAS_INT128
 #include "src/__support/uint128.h"
 
 #include <stdint.h>
 
-namespace LIBC_NAMESPACE {
+namespace LIBC_NAMESPACE_DECL {
 namespace benchmarks {
 
 // cpp::string_view specialization
@@ -94,4 +95,4 @@ template BenchmarkLogger &BenchmarkLogger::operator<< <UInt<320>>(UInt<320>);
 BenchmarkLogger log;
 
 } // namespace benchmarks
-} // namespace LIBC_NAMESPACE
+} // namespace LIBC_NAMESPACE_DECL
diff --git a/libc/benchmarks/gpu/BenchmarkLogger.h b/libc/benchmarks/gpu/BenchmarkLogger.h
index 332ff1439e6f5..2b22aba085f86 100644
--- a/libc/benchmarks/gpu/BenchmarkLogger.h
+++ b/libc/benchmarks/gpu/BenchmarkLogger.h
@@ -9,7 +9,9 @@
 #ifndef LLVM_LIBC_BENCHMARKS_GPU_BENCHMARKLOGGER_H
 #define LLVM_LIBC_BENCHMARKS_GPU_BENCHMARKLOGGER_H
 
-namespace LIBC_NAMESPACE {
+#include "src/__support/macros/config.h"
+
+namespace LIBC_NAMESPACE_DECL {
 namespace benchmarks {
 
 // A class to log to standard output in the context of hermetic tests.
@@ -22,6 +24,6 @@ struct BenchmarkLogger {
 extern BenchmarkLogger log;
 
 } // namespace benchmarks
-} // namespace LIBC_NAMESPACE
+} // namespace LIBC_NAMESPACE_DECL
 
 #endif /* LLVM_LIBC_BENCHMARKS_GPU_BENCHMARKLOGGER_H */
diff --git a/libc/benchmarks/gpu/LibcGpuBenchmark.cpp b/libc/benchmarks/gpu/LibcGpuBenchmark.cpp
index 3dd83cef6d4df..1c1ba7639d0b1 100644
--- a/libc/benchmarks/gpu/LibcGpuBenchmark.cpp
+++ b/libc/benchmarks/gpu/LibcGpuBenchmark.cpp
@@ -5,9 +5,10 @@
 #include "src/__support/FPUtil/sqrt.h"
 #include "src/__support/GPU/utils.h"
 #include "src/__support/fixedvector.h"
+#include "src/__support/macros/config.h"
 #include "src/time/gpu/time_utils.h"
 
-namespace LIBC_NAMESPACE {
+namespace LIBC_NAMESPACE_DECL {
 namespace benchmarks {
 
 FixedVector<Benchmark *, 64> benchmarks;
@@ -135,4 +136,4 @@ BenchmarkResult benchmark(const BenchmarkOptions &options,
 };
 
 } // namespace benchmarks
-} // namespace LIBC_NAMESPACE
+} // namespace LIBC_NAMESPACE_DECL
diff --git a/libc/benchmarks/gpu/LibcGpuBenchmark.h b/libc/benchmarks/gpu/LibcGpuBenchmark.h
index ffc858911b1c0..26cb0fd30bc1c 100644
--- a/libc/benchmarks/gpu/LibcGpuBenchmark.h
+++ b/libc/benchmarks/gpu/LibcGpuBenchmark.h
@@ -6,11 +6,12 @@
 #include "src/__support/CPP/functional.h"
 #include "src/__support/CPP/limits.h"
 #include "src/__support/CPP/string_view.h"
+#include "src/__support/macros/config.h"
 #include "src/time/clock.h"
 
 #include <stdint.h>
 
-namespace LIBC_NAMESPACE {
+namespace LIBC_NAMESPACE_DECL {
 
 namespace benchmarks {
 
@@ -99,7 +100,7 @@ class Benchmark {
   const cpp::string_view get_name() const { return name; }
 };
 } // namespace benchmarks
-} // namespace LIBC_NAMESPACE
+} // namespace LIBC_NAMESPACE_DECL
 
 #define BENCHMARK(SuiteName, TestName, Func)                                   \
   LIBC_NAMESPACE::benchmarks::Benchmark SuiteName##_##TestName##_Instance(     \
diff --git a/libc/benchmarks/gpu/timing/amdgpu/timing.h b/libc/benchmarks/gpu/timing/amdgpu/timing.h
index 1eecb2acd2136..9b40f9282b16b 100644
--- a/libc/benchmarks/gpu/timing/amdgpu/timing.h
+++ b/libc/benchmarks/gpu/timing/amdgpu/timing.h
@@ -25,7 +25,7 @@
   else                                                                         \
     asm("" ::"v"(VARIABLE))
 
-namespace LIBC_NAMESPACE {
+namespace LIBC_NAMESPACE_DECL {
 
 // Returns the overhead associated with calling the profiling region. This
 // allows us to substract the constant-time overhead from the latency to
@@ -107,6 +107,6 @@ template <typename F, typename T1, typename T2>
   return stop - start;
 }
 
-} // namespace LIBC_NAMESPACE
+} // namespace LIBC_NAMESPACE_DECL
 
 #endif // LLVM_LIBC_UTILS_GPU_TIMING_AMDGPU
diff --git a/libc/benchmarks/gpu/timing/nvptx/timing.h b/libc/benchmarks/gpu/timing/nvptx/timing.h
index d3851a764c43d..d141b08d4c922 100644
--- a/libc/benchmarks/gpu/timing/nvptx/timing.h
+++ b/libc/benchmarks/gpu/timing/nvptx/timing.h
@@ -16,7 +16,7 @@
 
 #include <stdint.h>
 
-namespace LIBC_NAMESPACE {
+namespace LIBC_NAMESPACE_DECL {
 
 // Returns the overhead associated with calling the profiling region. This
 // allows us to substract the constant-time overhead from the latency to
@@ -94,6 +94,6 @@ static LIBC_INLINE uint64_t latency(F f, T1 t1, T2 t2) {
 
   return stop - start;
 }
-} // namespace LIBC_NAMESPACE
+} // namespace LIBC_NAMESPACE_DECL
 
 #endif // LLVM_LIBC_UTILS_GPU_TIMING_NVPTX
diff --git a/libc/cmake/modules/LLVMLibCObjectRules.cmake b/libc/cmake/modules/LLVMLibCObjectRules.cmake
index 1f80e7f4e57c1..0b092e94ca8a1 100644
--- a/libc/cmake/modules/LLVMLibCObjectRules.cmake
+++ b/libc/cmake/modules/LLVMLibCObjectRules.cmake
@@ -93,11 +93,11 @@ function(create_object_library fq_target_name)
     endif()
   endif()
 
-  if(fq_deps_list)
-    add_dependencies(${fq_target_name} ${fq_deps_list})
-    # Add deps as link libraries to inherit interface compile and link options.
-    target_link_libraries(${fq_target_name} PUBLIC ${fq_deps_list})
-  endif()
+  list(APPEND fq_deps_list libc.src.__support.macros.config)
+  list(REMOVE_DUPLICATES fq_deps_list)
+  add_dependencies(${fq_target_name} ${fq_deps_list})
+  # Add deps as link libraries to inherit interface compile and link options.
+  target_link_libraries(${fq_target_name} PUBLIC ${fq_deps_list})
 
   set_target_properties(
     ${fq_target_name}
diff --git a/libc/config/linux/app.h b/libc/config/linux/app.h
index 2a3b1560817b8..188d34816454b 100644
--- a/libc/config/linux/app.h
+++ b/libc/config/linux/app.h
@@ -9,11 +9,12 @@
 #ifndef LLVM_LIBC_CONFIG_LINUX_APP_H
 #define LLVM_LIBC_CONFIG_LINUX_APP_H
 
+#include "src/__support/macros/config.h"
 #include "src/__support/macros/properties/architectures.h"
 
 #include <stdint.h>
 
-namespace LIBC_NAMESPACE {
+namespace LIBC_NAMESPACE_DECL {
 
 // Data structure to capture properties of the linux/ELF TLS image.
 struct TLSImage {
@@ -104,6 +105,6 @@ void cleanup_tls(uintptr_t tls_addr, uintptr_t tls_size);
 // Set the thread pointer for the current thread.
 bool set_thread_ptr(uintptr_t val);
 
-} // namespace LIBC_NAMESPACE
+} // namespace LIBC_NAMESPACE_DECL
 
 #endif // LLVM_LIBC_CONFIG_LINUX_APP_H
diff --git a/libc/docs/dev/clang_tidy_checks.rst b/libc/docs/dev/clang_tidy_checks.rst
index 198d8f16d1cd7..91d415a2e0d47 100644
--- a/libc/docs/dev/clang_tidy_checks.rst
+++ b/libc/docs/dev/clang_tidy_checks.rst
@@ -36,17 +36,17 @@ implementation-in-namespace
 ---------------------------
 
 It is part of our implementation standards that all implementation pieces live
-under the ``LIBC_NAMESPACE`` namespace. This prevents pollution of the global
-namespace. Without a formal check to ensure this, an implementation might
-compile and pass unit tests, but not produce a usable libc function.
+under the ``LIBC_NAMESPACE_DECL`` namespace. This prevents pollution of the
+global namespace. Without a formal check to ensure this, an implementation
+might compile and pass unit tests, but not produce a usable libc function.
 
 This check that ensures any function call resolves to a function within the
-``LIBC_NAMESPACE`` namespace.
+``LIBC_NAMESPACE_DECL`` namespace.
 
 .. code-block:: c++
 
     // Correct: implementation inside the correct namespace.
-    namespace LIBC_NAMESPACE {
+    namespace LIBC_NAMESPACE_DECL {
         void LLVM_LIBC_ENTRYPOINT(strcpy)(char *dest, const char *src) {}
         // Namespaces within LIBC_NAMESPACE namespace are allowed.
         namespace inner{
@@ -87,7 +87,7 @@ are always external and can be intercepted.
 
 .. code-block:: c++
 
-    namespace LIBC_NAMESPACE {
+    namespace LIBC_NAMESPACE_DECL {
 
     // Allow calls with the fully qualified name.
     LIBC_NAMESPACE::strlen("hello");
@@ -104,4 +104,4 @@ are always external and can be intercepted.
     // Allow calling into specific global functions (explained above)
     ::malloc(10);
 
-    } // namespace LIBC_NAMESPACE
+    } // namespace LIBC_NAMESPACE_DECL
diff --git a/libc/fuzzing/__support/hashtable_fuzz.cpp b/libc/fuzzing/__support/hashtable_fuzz.cpp
index 07f1057714114..7d61e106c9c4a 100644
--- a/libc/fuzzing/__support/hashtable_fuzz.cpp
+++ b/libc/fuzzing/__support/hashtable_fuzz.cpp
@@ -12,8 +12,9 @@
 #include "include/llvm-libc-types/ENTRY.h"
 #include "src/__support/CPP/string_view.h"
 #include "src/__support/HashTable/table.h"
+#include "src/__support/macros/config.h"
 
-namespace LIBC_NAMESPACE {
+namespace LIBC_NAMESPACE_DECL {
 
 // A fuzzing payload starts with
 // - uint16_t: initial capacity for table A
@@ -179,4 +180,4 @@ extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
   return 0;
 }
 
-} // namespace LIBC_NAMESPACE
+} // namespace LIBC_NAMESPACE_DECL
diff --git a/libc/src/__support/CPP/algorithm.h b/libc/src/__support/CPP/algorithm.h
index 5120fa0daae17..f5dc9067409eb 100644
--- a/libc/src/__support/CPP/algorithm.h
+++ b/libc/src/__support/CPP/algorithm.h
@@ -13,8 +13,9 @@
 #define LLVM_LIBC_SRC___SUPPORT_CPP_ALGORITHM_H
 
 #include "src/__support/macros/attributes.h" // LIBC_INLINE
+#include "src/__support/macros/config.h"
 
-namespace LIBC_NAMESPACE {
+namespace LIBC_NAMESPACE_DECL {
 namespace cpp {
 
 template <class T> LIBC_INLINE constexpr const T &max(const T &a, const T &b) {
@@ -41,6 +42,6 @@ LIBC_INLINE constexpr bool all_of(InputIt first, InputIt last, UnaryPred p) {
 }
 
 } // namespace cpp
-} // namespace LIBC_NAMESPACE
+} // namespace LIBC_NAMESPACE_DECL
 
 #endif // LLVM_LIBC_SRC___SUPPORT_CPP_ALGORITHM_H
diff --git a/libc/src/__support/CPP/array.h b/libc/src/__support/CPP/array.h
index 4e69ba003e800..db0a986b71205 100644
--- a/libc/src/__support/CPP/array.h
+++ b/libc/src/__support/CPP/array.h
@@ -11,9 +11,10 @@
 
 #include "src/__support/CPP/iterator.h" // reverse_iterator
 #include "src/__support/macros/attributes.h"
+#include "src/__support/macros/config.h"
 #include <stddef.h> // For size_t.
 
-namespace LIBC_NAMESPACE {
+namespace LIBC_NAMESPACE_DECL {
 namespace cpp {
 
 template <class T, size_t N> struct array {
@@ -74,6 +75,6 @@ template <class T, size_t N> struct array {
 };
 
 } // namespace cpp
-} // namespace LIBC_NAMESPACE
+} // namespace LIBC_NAMESPACE_DECL
 
 #endif // LLVM_LIBC_SRC___SUPPORT_CPP_ARRAY_H
diff --git a/libc/src/__support/CPP/atomic.h b/libc/src/__support/CPP/atomic.h
index e273d998c0702..72e7f2adde6a4 100644
--- a/libc/src/__support/CPP/atomic.h
+++ b/libc/src/__support/CPP/atomic.h
@@ -10,11 +10,12 @@
 #define LLVM_LIBC_SRC___SUPPORT_CPP_ATOMIC_H
 
 #include "src/__support/macros/attributes.h"
+#include "src/__support/macros/config.h"
 #include "src/__support/macros/properties/architectures.h"
 
 #include "type_traits.h"
 
-namespace LIBC_NAMESPACE {
+namespace LIBC_NAMESPACE_DECL {
 namespace cpp {
 
 enum class MemoryOrder : int {
@@ -211,6 +212,6 @@ LIBC_INLINE void atomic_signal_fence([[maybe_unused]] MemoryOrder mem_ord) {
 }
 
 } // namespace cpp
-} // namespace LIBC_NAMESPACE
+} // namespace LIBC_NAMESPACE_DECL
 
 #endif // LLVM_LIBC_SRC___SUPPORT_CPP_ATOMIC_H
diff --git a/libc/src/__support/CPP/bit.h b/libc/src/__support/CPP/bit.h
index 4aea066d26ab0..adcd0472747d0 100644
--- a/libc/src/__support/CPP/bit.h
+++ b/libc/src/__support/CPP/bit.h
@@ -14,11 +14,13 @@
 #include "src/__support/CPP/limits.h" // numeric_limits
 #include "src/__support/CPP/type_traits.h"
 #include "src/__support/macros/attributes.h"
+#include "src/__support/macros/config.h"
 #include "src/__support/macros/sanitizer.h"
 
 #include <stdint.h>
 
-namespace LIBC_NAMESPACE::cpp {
+namespace LIBC_NAMESPACE_DECL {
+namespace cpp {
 
 #if __has_builtin(__builtin_memcpy_inline)
 #define LLVM_LIBC_HAS_BUILTIN_MEMCPY_INLINE
@@ -290,6 +292,7 @@ ADD_SPECIALIZATION(unsigned long long, __builtin_popcountll)
 #endif // __builtin_popcountg
 #undef ADD_SPECIALIZATION
 
-} // namespace LIBC_NAMESPACE::cpp
+} // namespace cpp
+} // namespace LIBC_NAMESPACE_DECL
 
 #endif // LLVM_LIBC_SRC___SUPPORT_CPP_BIT_H
diff --git a/libc/src/__support/CPP/bitset.h b/libc/src/__support/CPP/bitset.h
index 30a7fa796cb4b..db193f414abd2 100644
--- a/libc/src/__support/CPP/bitset.h
+++ b/libc/src/__support/CPP/bitset.h
@@ -10,9 +10,11 @@
 #define LLVM_LIBC_SRC___SUPPORT_CPP_BITSET_H
 
 #include "src/__support/macros/attributes.h"
+#include "src/__support/macros/config.h"
 #include <stddef.h> // For size_t.
 
-namespace LIBC_NAMESPACE::cpp {
+namespace LIBC_NAMESPACE_DECL {
+namespace cpp {
 
 template <size_t NumberOfBits> struct bitset {
   static_assert(NumberOfBits != 0,
@@ -86,6 +88,7 @@ template <size_t NumberOfBits> struct bitset {
   size_t Data[NUMBER_OF_UNITS] = {0};
 };
 
-} // namespace LIBC_NAMESPACE::cpp
+} // namespace cpp
+} // namespace LIBC_NAMESPACE_DECL
 
 #endif // LLVM_LIBC_SRC___SUPPORT_CPP_BITSET_H
diff --git a/libc/src/__support/CPP/cstddef.h b/libc/src/__support/CPP/cstddef.h
index 1da51fd253fb5..ed6c9d03362f4 100644
--- a/libc/src/__support/CPP/cstddef.h
+++ b/libc/src/__support/CPP/cstddef.h
@@ -10,9 +10,11 @@
 #define LLVM_LIBC_SRC___SUPPORT_CPP_CSTDDEF_H
 
 #include "src/__support/macros/attributes.h"
+#include "src/__support/macros/config.h"
 #include "type_traits.h" // For enable_if_t, is_integral_v.
 
-namespace LIBC_NAMESPACE::cpp {
+namespace LIBC_NAMESPACE_DECL {
+namespace cpp {
 
 enum class byte : unsigned char {};
 
@@ -66,6 +68,7 @@ to_integer(byte b) noexcept {
   return static_cast<IntegerType>(b);
 }
 
-} // namespace LIBC_NAMESPACE::cpp
+} // namespace cpp
+} // namespace LIBC_NAMESPACE_DECL
 
 #endif // LLVM_LIBC_SRC___SUPPORT_CPP_CSTDDEF_H
diff --git a/libc/src/__support/CPP/expected.h b/libc/src/__support/CPP/expected.h
index c35f0a1dc5369..8a93091f0ebfb 100644
--- a/libc/src/__support/CPP/expected.h
+++ b/libc/src/__support/CPP/expected.h
@@ -10,8 +10,10 @@
 #define LLVM_LIBC_SRC___SUPPORT_CPP_EXPECTED_H
 
 #include "src/__support/macros/attributes.h"
+#include "src/__support/macros/config.h"
 
-namespace LIBC_NAMESPACE::cpp {
+namespace LIBC_NAMESPACE_DECL {
+namespace cpp {
 
 // This is used to hold an unexpected value so that a different constructor is
 // selected.
@@ -52,6 +54,7 @@ template <class T, class E> class expected {
   LIBC_INLINE constexpr const T *operator->() const { return &exp; }
 };
 
-} // namespace LIBC_NAMESPACE::cpp
+} // namespace cpp
+} // namespace LIBC_NAMESPACE_DECL
 
 #endif // LLVM_LIBC_SRC___SUPPORT_CPP_EXPECTED_H
diff --git a/libc/src/__support/CPP/functional.h b/libc/src/__support/CPP/functional.h
index 16283a264e657..50cfa256b6682 100644
--- a/libc/src/__support/CPP/functional.h
+++ b/libc/src/__support/CPP/functional.h
@@ -17,10 +17,11 @@
 #include "src/__support/CPP/type_traits/remove_reference.h"
 #include "src/__support/CPP/utility/forward.h"
 #include "src/__support/macros/attributes.h"
+#include "src/__support/macros/config.h"
 
 #include <stdint.h>
 
-namespace LIBC_NAMESPACE {
+namespace LIBC_NAMESPACE_DECL {
 namespace cpp {
 
 /// A function type adapted from LLVM's function_ref.
@@ -65,6 +66,6 @@ template <typename Ret, typename... Params> class function<Ret(Params...)> {
 };
 
 } // namespace cpp
-} // namespace LIBC_NAMESPACE
+} // namespace LIBC_NAMESPACE_DECL
 
 #endif // LLVM_LIBC_SRC___SUPPORT_CPP_FUNCTIONAL_H
diff --git a/libc/src/__support/CPP/iterator.h b/libc/src/__support/CPP/iterator.h
index b0fd5c9f22ae0..168a269731822 100644
--- a/libc/src/__support/CPP/iterator.h
+++ b/libc/src/__support/CPP/iterator.h
@@ -13,8 +13,9 @@
 #include "src/__support/CPP/type_traits/is_convertible.h"
 #include "src/__support/CPP/type_traits/is_same.h"
 #include "src/__support/macros/attributes.h"
+#include "src/__support/macros/config.h"
 
-namespace LIBC_NAMESPACE {
+namespace LIBC_NAMESPACE_DECL {
 namespace cpp {
 
 template <typename T> struct iterator_traits;
@@ -93,6 +94,6 @@ template <typename Iter> class reverse_iterator {
 };
 
 } // namespace cpp
-} // namespace LIBC_NAMESPACE
+} // namespace LIBC_NA...
[truncated]

``````````

</details>


https://github.com/llvm/llvm-project/pull/98597
