From 7160e76d54e7bfbad3f2c5e55cb72e51fa7015b8 Mon Sep 17 00:00:00 2001
From: Matt Borland <matt@mattborland.com>
Date: Fri, 16 Oct 2026 15:43:11 -0400
Subject: [PATCH 1/4] Define __GCC_CONSTRUCTIVE/DESTRUCTIVE_SIZE on macOS [GH
 #319]

---
 .../macos-arm/clang/lib/predefined_macros.txt |  2 +
 .../lib_macos_arm64/predefined_macros.txt     |  2 +
 .../clang/lib/predefined_macros.txt           |  2 +
 .../lib_macos_x86_64/predefined_macros.txt    |  2 +
 .../tests/changes/.GH319.rto/default.1.1.txt  |  1 +
 tests/tests/changes/GH319.sft.cpp             | 49 +++++++++++++++++++
 6 files changed, 58 insertions(+)
 create mode 100644 tests/tests/changes/.GH319.rto/default.1.1.txt
 create mode 100644 tests/tests/changes/GH319.sft.cpp

diff --git a/bases/cmake-native/macos-arm/clang/lib/predefined_macros.txt b/bases/cmake-native/macos-arm/clang/lib/predefined_macros.txt
index 142d5612e8..f7f01571e4 100644
--- a/bases/cmake-native/macos-arm/clang/lib/predefined_macros.txt
+++ b/bases/cmake-native/macos-arm/clang/lib/predefined_macros.txt
@@ -186,6 +186,8 @@ clang no  __GCC_ATOMIC_POINTER_LOCK_FREE 2
 clang no  __GCC_ATOMIC_SHORT_LOCK_FREE 2
 clang no  __GCC_ATOMIC_TEST_AND_SET_TRUEVAL 1
 clang no  __GCC_ATOMIC_WCHAR_T_LOCK_FREE 2
+clang no  __GCC_CONSTRUCTIVE_SIZE 64
+clang no  __GCC_DESTRUCTIVE_SIZE 256
 clang no  __GCC_HAVE_DWARF2_CFI_ASM 1
 clang no  __GCC_HAVE_SYNC_COMPARE_AND_SWAP_1 1
 clang no  __GCC_HAVE_SYNC_COMPARE_AND_SWAP_2 1
diff --git a/bases/cmake-native/macos-arm/clang/lib_macos_arm64/predefined_macros.txt b/bases/cmake-native/macos-arm/clang/lib_macos_arm64/predefined_macros.txt
index 142d5612e8..f7f01571e4 100644
--- a/bases/cmake-native/macos-arm/clang/lib_macos_arm64/predefined_macros.txt
+++ b/bases/cmake-native/macos-arm/clang/lib_macos_arm64/predefined_macros.txt
@@ -186,6 +186,8 @@ clang no  __GCC_ATOMIC_POINTER_LOCK_FREE 2
 clang no  __GCC_ATOMIC_SHORT_LOCK_FREE 2
 clang no  __GCC_ATOMIC_TEST_AND_SET_TRUEVAL 1
 clang no  __GCC_ATOMIC_WCHAR_T_LOCK_FREE 2
+clang no  __GCC_CONSTRUCTIVE_SIZE 64
+clang no  __GCC_DESTRUCTIVE_SIZE 256
 clang no  __GCC_HAVE_DWARF2_CFI_ASM 1
 clang no  __GCC_HAVE_SYNC_COMPARE_AND_SWAP_1 1
 clang no  __GCC_HAVE_SYNC_COMPARE_AND_SWAP_2 1
diff --git a/bases/cmake-native/macos-x86_64/clang/lib/predefined_macros.txt b/bases/cmake-native/macos-x86_64/clang/lib/predefined_macros.txt
index bbdb1e76a2..4fafa38dd4 100644
--- a/bases/cmake-native/macos-x86_64/clang/lib/predefined_macros.txt
+++ b/bases/cmake-native/macos-x86_64/clang/lib/predefined_macros.txt
@@ -137,6 +137,8 @@ clang no  __GCC_ATOMIC_POINTER_LOCK_FREE 2
 clang no  __GCC_ATOMIC_SHORT_LOCK_FREE 2
 clang no  __GCC_ATOMIC_TEST_AND_SET_TRUEVAL 1
 clang no  __GCC_ATOMIC_WCHAR_T_LOCK_FREE 2
+clang no  __GCC_CONSTRUCTIVE_SIZE 64
+clang no  __GCC_DESTRUCTIVE_SIZE 64
 clang no  __GCC_HAVE_SYNC_COMPARE_AND_SWAP_16 1
 clang no  __GCC_HAVE_SYNC_COMPARE_AND_SWAP_1 1
 clang no  __GCC_HAVE_SYNC_COMPARE_AND_SWAP_2 1
diff --git a/bases/cmake-native/macos-x86_64/clang/lib_macos_x86_64/predefined_macros.txt b/bases/cmake-native/macos-x86_64/clang/lib_macos_x86_64/predefined_macros.txt
index bbdb1e76a2..4fafa38dd4 100644
--- a/bases/cmake-native/macos-x86_64/clang/lib_macos_x86_64/predefined_macros.txt
+++ b/bases/cmake-native/macos-x86_64/clang/lib_macos_x86_64/predefined_macros.txt
@@ -137,6 +137,8 @@ clang no  __GCC_ATOMIC_POINTER_LOCK_FREE 2
 clang no  __GCC_ATOMIC_SHORT_LOCK_FREE 2
 clang no  __GCC_ATOMIC_TEST_AND_SET_TRUEVAL 1
 clang no  __GCC_ATOMIC_WCHAR_T_LOCK_FREE 2
+clang no  __GCC_CONSTRUCTIVE_SIZE 64
+clang no  __GCC_DESTRUCTIVE_SIZE 64
 clang no  __GCC_HAVE_SYNC_COMPARE_AND_SWAP_16 1
 clang no  __GCC_HAVE_SYNC_COMPARE_AND_SWAP_1 1
 clang no  __GCC_HAVE_SYNC_COMPARE_AND_SWAP_2 1
diff --git a/tests/tests/changes/.GH319.rto/default.1.1.txt b/tests/tests/changes/.GH319.rto/default.1.1.txt
new file mode 100644
index 0000000000..1f9def3e3a
--- /dev/null
+++ b/tests/tests/changes/.GH319.rto/default.1.1.txt
@@ -0,0 +1 @@
+fe_only -DTEST_NUMBER=1 --clang --c++17 Test_name.c
diff --git a/tests/tests/changes/GH319.sft.cpp b/tests/tests/changes/GH319.sft.cpp
new file mode 100644
index 0000000000..bf08e56b9e
--- /dev/null
+++ b/tests/tests/changes/GH319.sft.cpp
@@ -0,0 +1,49 @@
+//type:fp
+//options_all:--clang --c++17
+//remark:[GH #?] The macOS clang bases define __GCC_CONSTRUCTIVE_SIZE and __GCC_DESTRUCTIVE_SIZE
+// 10/15/26  [GH #?]
+//
+// Clang 19 and later predefine __GCC_CONSTRUCTIVE_SIZE and
+// __GCC_DESTRUCTIVE_SIZE, and libc++ (<__new/interference_size.h>, reached by
+// <new>, <string>, <vector>, <algorithm>, ...) uses them unconditionally from
+// C++17 on to define std::hardware_constructive_interference_size and
+// std::hardware_destructive_interference_size.
+//
+// The values depend on the target (Apple clang 21 gives 64 and 256 for arm64,
+// 64 and 64 for x86_64), so the test checks that the macros are defined and
+// usable the way libc++ uses them, not their values.
+
+#if defined(__APPLE__) && defined(__clang__)
+
+#ifndef __GCC_DESTRUCTIVE_SIZE
+#error "__GCC_DESTRUCTIVE_SIZE is not defined"
+#endif
+#ifndef __GCC_CONSTRUCTIVE_SIZE
+#error "__GCC_CONSTRUCTIVE_SIZE is not defined"
+#endif
+
+typedef decltype(sizeof(0)) size_t;
+
+// As in libc++'s <__new/interference_size.h>.
+inline constexpr size_t hardware_destructive_interference_size =
+    __GCC_DESTRUCTIVE_SIZE;
+inline constexpr size_t hardware_constructive_interference_size =
+    __GCC_CONSTRUCTIVE_SIZE;
+
+// Both are positive powers of two, and the destructive size (the one that
+// avoids false sharing) is not smaller than the constructive one.
+static_assert(hardware_constructive_interference_size > 0 &&
+              (hardware_constructive_interference_size &
+               (hardware_constructive_interference_size - 1)) == 0,
+              "constructive size is a power of two");
+static_assert(hardware_destructive_interference_size > 0 &&
+              (hardware_destructive_interference_size &
+               (hardware_destructive_interference_size - 1)) == 0,
+              "destructive size is a power of two");
+static_assert(hardware_destructive_interference_size >=
+              hardware_constructive_interference_size,
+              "destructive size is not smaller than constructive size");
+
+#endif
+
+int main() { return 0; }

From a4e8327c9f1fc796cc3efb4dec30d7008f690a60 Mon Sep 17 00:00:00 2001
From: Matt Borland <matt@mattborland.com>
Date: Fri, 16 Oct 2026 22:51:47 -0400
Subject: [PATCH 2/4] Fix issue number []

---
 tests/tests/changes/GH319.sft.cpp | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/tests/tests/changes/GH319.sft.cpp b/tests/tests/changes/GH319.sft.cpp
index bf08e56b9e..ea53ca357b 100644
--- a/tests/tests/changes/GH319.sft.cpp
+++ b/tests/tests/changes/GH319.sft.cpp
@@ -1,7 +1,7 @@
 //type:fp
 //options_all:--clang --c++17
-//remark:[GH #?] The macOS clang bases define __GCC_CONSTRUCTIVE_SIZE and __GCC_DESTRUCTIVE_SIZE
-// 10/15/26  [GH #?]
+//remark:[GH #319] The macOS clang bases define __GCC_CONSTRUCTIVE_SIZE and __GCC_DESTRUCTIVE_SIZE
+// 10/15/26  [GH #319]
 //
 // Clang 19 and later predefine __GCC_CONSTRUCTIVE_SIZE and
 // __GCC_DESTRUCTIVE_SIZE, and libc++ (<__new/interference_size.h>, reached by

From 2aa4493efa8b9fadb99b868e123c5b7ef9c4f329 Mon Sep 17 00:00:00 2001
From: Matt Borland <matt@mattborland.com>
Date: Mon, 19 Oct 2026 10:35:07 -0400
Subject: [PATCH 3/4] Update the predef macro table generator, and rerun for
 mac []

---
 .../macos-arm/clang/lib/predefined_macros.txt | 92 +++++++++++++++---
 .../lib_macos_arm64/predefined_macros.txt     | 92 +++++++++++++++---
 .../clang/lib/predefined_macros.txt           | 97 ++++++++++++++++---
 .../lib_macos_x86_64/predefined_macros.txt    | 97 ++++++++++++++++---
 util/Changes                                  | 22 +++++
 util/make_predef_macro_table                  | 25 +++++
 6 files changed, 377 insertions(+), 48 deletions(-)

diff --git a/bases/cmake-native/macos-arm/clang/lib/predefined_macros.txt b/bases/cmake-native/macos-arm/clang/lib/predefined_macros.txt
index f7f01571e4..30c1d87f8a 100644
--- a/bases/cmake-native/macos-arm/clang/lib/predefined_macros.txt
+++ b/bases/cmake-native/macos-arm/clang/lib/predefined_macros.txt
@@ -30,28 +30,55 @@
 #   the characters until the end of the line are used as the macro value.
 # 
 # Created by make_predef_macro_table
-# Thu Oct 17 16:13:17 EDT 2024
+# Mon Oct 19 10:30:08 EDT 2026
 # 
 # C compiler information
 # command: /usr/bin/clang 
 # 
-# Apple clang version 15.0.0 (clang-1500.3.9.4)
-# Target: arm64-apple-darwin23.4.0
+# Apple clang version 21.0.0 (clang-2100.3.34.2)
+# Target: arm64-apple-darwin27.0.0
 # Thread model: posix
 # InstalledDir: /Library/Developer/CommandLineTools/usr/bin
 # 
 # C++ compiler information
 # command: /usr/bin/clang 
 # 
-# Apple clang version 15.0.0 (clang-1500.3.9.4)
-# Target: arm64-apple-darwin23.4.0
+# Apple clang version 21.0.0 (clang-2100.3.34.2)
+# Target: arm64-apple-darwin27.0.0
 # Thread model: posix
 # InstalledDir: /Library/Developer/CommandLineTools/usr/bin
 # 
 clang_cpp no  __DEPRECATED 1
 clang_cpp no  __GNUG__ 4
+clang_cpp no  __GXX_EXPERIMENTAL_CXX0X__ 1
 clang_cpp no  __GXX_WEAK__ 1
 clang_cpp no  __private_extern__ extern
+clang no  TARGET_IPHONE_SIMULATOR 0
+clang no  TARGET_OS_ARROW 1
+clang no  TARGET_OS_BRIDGE 0
+clang no  TARGET_OS_DRIVERKIT 0
+clang no  TARGET_OS_EMBEDDED 0
+clang no  TARGET_OS_FIRMWARE 0
+clang no  TARGET_OS_IOS 0
+clang no  TARGET_OS_IOSMAC 0
+clang no  TARGET_OS_IPHONE 0
+clang no  TARGET_OS_KERNELKIT 0
+clang no  TARGET_OS_LINUX 0
+clang no  TARGET_OS_MAC 1
+clang no  TARGET_OS_MACCATALYST 0
+clang no  TARGET_OS_NANO 0
+clang no  TARGET_OS_OSX 1
+clang no  TARGET_OS_SIMULATOR 0
+clang no  TARGET_OS_TV 0
+clang no  TARGET_OS_UEFI 0
+clang no  TARGET_OS_UIKITFORMAC 0
+clang no  TARGET_OS_UNIX 0
+clang no  TARGET_OS_VISION 0
+clang no  TARGET_OS_WATCH 0
+clang no  TARGET_OS_WIN32 0
+clang no  TARGET_OS_WINDOWS 0
+clang no  TARGET_OS_XR 0
+clang no  _HAS_BUILTIN_AVAILABLE_FEATS 1
 clang no  _LP64 1
 clang no  __AARCH64EL__ 1
 clang no  __AARCH64_CMODEL_SMALL__ 1
@@ -60,9 +87,11 @@ clang no  __APPLE_CC__ 6000
 clang no  __APPLE__ 1
 clang no  __ARM64_ARCH_8__ 1
 clang no  __ARM_64BIT_STATE 1
-clang no  __ARM_ACLE 200
+clang no  __ARM_ACLE 202420
+clang no  __ARM_ACLE_VERSION(year,quarter,patch) (100 * (year) + 10 * (quarter) + (patch))
 clang no  __ARM_ALIGN_MAX_STACK_PWR 4
 clang no  __ARM_ARCH 8
+clang no  __ARM_ARCH_8_2__ 1
 clang no  __ARM_ARCH_8_3__ 1
 clang no  __ARM_ARCH_8_4__ 1
 clang no  __ARM_ARCH_8_5__ 1
@@ -70,6 +99,7 @@ clang no  __ARM_ARCH_ISA_A64 1
 clang no  __ARM_ARCH_PROFILE 'A'
 clang no  __ARM_FEATURE_AES 1
 clang no  __ARM_FEATURE_ATOMICS 1
+clang no  __ARM_FEATURE_BTI 1
 clang no  __ARM_FEATURE_CLZ 1
 clang no  __ARM_FEATURE_COMPLEX 1
 clang no  __ARM_FEATURE_CRC32 1
@@ -86,23 +116,25 @@ clang no  __ARM_FEATURE_IDIV 1
 clang no  __ARM_FEATURE_JCVT 1
 clang no  __ARM_FEATURE_LDREX 0xF
 clang no  __ARM_FEATURE_NUMERIC_MAXMIN 1
+clang no  __ARM_FEATURE_PAUTH 1
 clang no  __ARM_FEATURE_QRDMX 1
 clang no  __ARM_FEATURE_RCPC 1
 clang no  __ARM_FEATURE_SHA2 1
 clang no  __ARM_FEATURE_SHA3 1
 clang no  __ARM_FEATURE_SHA512 1
-clang no  __ARM_FEATURE_SM3 1
-clang no  __ARM_FEATURE_SM4 1
 clang no  __ARM_FEATURE_UNALIGNED 1
 clang no  __ARM_FP16_ARGS 1
 clang no  __ARM_FP16_FORMAT_IEEE 1
 clang no  __ARM_FP 0xE
 clang no  __ARM_NEON 1
 clang no  __ARM_NEON_FP 0xE
+clang no  __ARM_NEON_SVE_BRIDGE 1
 clang no  __ARM_NEON__ 1
 clang no  __ARM_PCS_AAPCS64 1
 clang no  __ARM_SIZEOF_MINIMAL_ENUM 4
 clang no  __ARM_SIZEOF_WCHAR_T 4
+clang no  __ARM_STATE_ZA 1
+clang no  __ARM_STATE_ZT0 1
 clang no  __ATOMIC_ACQUIRE 2
 clang no  __ATOMIC_ACQ_REL 4
 clang no  __ATOMIC_CONSUME 1
@@ -111,7 +143,7 @@ clang no  __ATOMIC_RELEASE 3
 clang no  __ATOMIC_SEQ_CST 5
 clang no  __BIGGEST_ALIGNMENT__ 8
 clang no  __BITINT_MAXWIDTH__ 128
-clang no  __BOOL_WIDTH__ 8
+clang no  __BOOL_WIDTH__ 1
 clang no  __BYTE_ORDER__ __ORDER_LITTLE_ENDIAN__
 clang no  __CHAR_BIT__ 8
 clang no  __CLANG_ATOMIC_BOOL_LOCK_FREE 2
@@ -139,10 +171,11 @@ clang no  __DBL_MAX__ 1.7976931348623157e+308
 clang no  __DBL_MIN_10_EXP__ (-307)
 clang no  __DBL_MIN_EXP__ (-1021)
 clang no  __DBL_MIN__ 2.2250738585072014e-308
+clang no  __DBL_NORM_MAX__ 1.7976931348623157e+308
 clang no  __DECIMAL_DIG__ __LDBL_DECIMAL_DIG__
 clang no  __DYNAMIC__ 1
-clang no  __ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__ 140000
-clang no  __ENVIRONMENT_OS_VERSION_MIN_REQUIRED__ 140000
+clang no  __ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__ 270000
+clang no  __ENVIRONMENT_OS_VERSION_MIN_REQUIRED__ 270000
 clang no  __FINITE_MATH_ONLY__ 0
 clang no  __FLT16_DECIMAL_DIG__ 5
 clang no  __FLT16_DENORM_MIN__ 5.9604644775390625e-8F16
@@ -158,10 +191,12 @@ clang no  __FLT16_MAX__ 6.5504e+4F16
 clang no  __FLT16_MIN_10_EXP__ (-4)
 clang no  __FLT16_MIN_EXP__ (-13)
 clang no  __FLT16_MIN__ 6.103515625e-5F16
+clang no  __FLT16_NORM_MAX__ 6.5504e+4F16
 clang no  __FLT_DECIMAL_DIG__ 9
 clang no  __FLT_DENORM_MIN__ 1.40129846e-45F
 clang no  __FLT_DIG__ 6
 clang no  __FLT_EPSILON__ 1.19209290e-7F
+clang no  __FLT_EVAL_METHOD__ 0
 clang no  __FLT_HAS_DENORM__ 1
 clang no  __FLT_HAS_INFINITY__ 1
 clang no  __FLT_HAS_QUIET_NAN__ 1
@@ -172,9 +207,22 @@ clang no  __FLT_MAX__ 3.40282347e+38F
 clang no  __FLT_MIN_10_EXP__ (-37)
 clang no  __FLT_MIN_EXP__ (-125)
 clang no  __FLT_MIN__ 1.17549435e-38F
+clang no  __FLT_NORM_MAX__ 3.40282347e+38F
 clang no  __FLT_RADIX__ 2
+clang no  __FPCLASS_NEGINF 0x0004
+clang no  __FPCLASS_NEGNORMAL 0x0008
+clang no  __FPCLASS_NEGSUBNORMAL 0x0010
+clang no  __FPCLASS_NEGZERO 0x0020
+clang no  __FPCLASS_POSINF 0x0200
+clang no  __FPCLASS_POSNORMAL 0x0100
+clang no  __FPCLASS_POSSUBNORMAL 0x0080
+clang no  __FPCLASS_POSZERO 0x0040
+clang no  __FPCLASS_QNAN 0x0002
+clang no  __FPCLASS_SNAN 0x0001
 clang no  __FP_FAST_FMA 1
 clang no  __FP_FAST_FMAF 1
+clang no  __FUNCTION_MULTI_VERSIONING_SUPPORT_LEVEL 202430
+clang no  __GCC_ASM_FLAG_OUTPUTS__ 1
 clang no  __GCC_ATOMIC_BOOL_LOCK_FREE 2
 clang no  __GCC_ATOMIC_CHAR16_T_LOCK_FREE 2
 clang no  __GCC_ATOMIC_CHAR32_T_LOCK_FREE 2
@@ -189,6 +237,7 @@ clang no  __GCC_ATOMIC_WCHAR_T_LOCK_FREE 2
 clang no  __GCC_CONSTRUCTIVE_SIZE 64
 clang no  __GCC_DESTRUCTIVE_SIZE 256
 clang no  __GCC_HAVE_DWARF2_CFI_ASM 1
+clang no  __GCC_HAVE_SYNC_COMPARE_AND_SWAP_16 1
 clang no  __GCC_HAVE_SYNC_COMPARE_AND_SWAP_1 1
 clang no  __GCC_HAVE_SYNC_COMPARE_AND_SWAP_2 1
 clang no  __GCC_HAVE_SYNC_COMPARE_AND_SWAP_4 1
@@ -197,26 +246,32 @@ clang no  __GNUC_MINOR__ 2
 clang no  __GNUC_PATCHLEVEL__ 1
 clang no  __GNUC__ 4
 clang no  __GXX_ABI_VERSION 1002
+clang no  __HAVE_FUNCTION_MULTI_VERSIONING 1
+clang no  __INT16_C(c) c
 clang no  __INT16_C_SUFFIX__ 
 clang no  __INT16_FMTd__ "hd"
 clang no  __INT16_FMTi__ "hi"
 clang no  __INT16_MAX__ 32767
 clang no  __INT16_TYPE__ short
+clang no  __INT32_C(c) c
 clang no  __INT32_C_SUFFIX__ 
 clang no  __INT32_FMTd__ "d"
 clang no  __INT32_FMTi__ "i"
 clang no  __INT32_MAX__ 2147483647
 clang no  __INT32_TYPE__ int
+clang no  __INT64_C(c) c##LL
 clang no  __INT64_C_SUFFIX__ LL
 clang no  __INT64_FMTd__ "lld"
 clang no  __INT64_FMTi__ "lli"
 clang no  __INT64_MAX__ 9223372036854775807LL
 clang no  __INT64_TYPE__ long long int
+clang no  __INT8_C(c) c
 clang no  __INT8_C_SUFFIX__ 
 clang no  __INT8_FMTd__ "hhd"
 clang no  __INT8_FMTi__ "hhi"
 clang no  __INT8_MAX__ 127
 clang no  __INT8_TYPE__ signed char
+clang no  __INTMAX_C(c) c##L
 clang no  __INTMAX_C_SUFFIX__ L
 clang no  __INTMAX_FMTd__ "ld"
 clang no  __INTMAX_FMTi__ "li"
@@ -284,6 +339,7 @@ clang no  __LDBL_MAX__ 1.7976931348623157e+308L
 clang no  __LDBL_MIN_10_EXP__ (-307)
 clang no  __LDBL_MIN_EXP__ (-1021)
 clang no  __LDBL_MIN__ 2.2250738585072014e-308L
+clang no  __LDBL_NORM_MAX__ 1.7976931348623157e+308L
 clang no  __LITTLE_ENDIAN__ 1
 clang no  __LLONG_WIDTH__ 64
 clang no  __LONG_LONG_MAX__ 9223372036854775807LL
@@ -291,6 +347,11 @@ clang no  __LONG_MAX__ 9223372036854775807L
 clang no  __LONG_WIDTH__ 64
 clang no  __LP64__ 1
 clang no  __MACH__ 1
+clang no  __MEMORY_SCOPE_DEVICE 1
+clang no  __MEMORY_SCOPE_SINGLE 4
+clang no  __MEMORY_SCOPE_SYSTEM 0
+clang no  __MEMORY_SCOPE_WRKGRP 2
+clang no  __MEMORY_SCOPE_WVFRNT 3
 clang no  __NO_INLINE__ 1
 clang no  __NO_MATH_ERRNO__ 1
 clang no  __OBJC_BOOL_IS_BOOL 1
@@ -337,6 +398,7 @@ clang no  __SIZE_MAX__ 18446744073709551615UL
 clang no  __SIZE_TYPE__ long unsigned int
 clang no  __SIZE_WIDTH__ 64
 clang no  __SSP__ 1
+clang no  __UINT16_C(c) c
 clang no  __UINT16_C_SUFFIX__ 
 clang no  __UINT16_FMTX__ "hX"
 clang no  __UINT16_FMTo__ "ho"
@@ -344,6 +406,7 @@ clang no  __UINT16_FMTu__ "hu"
 clang no  __UINT16_FMTx__ "hx"
 clang no  __UINT16_MAX__ 65535
 clang no  __UINT16_TYPE__ unsigned short
+clang no  __UINT32_C(c) c##U
 clang no  __UINT32_C_SUFFIX__ U
 clang no  __UINT32_FMTX__ "X"
 clang no  __UINT32_FMTo__ "o"
@@ -351,6 +414,7 @@ clang no  __UINT32_FMTu__ "u"
 clang no  __UINT32_FMTx__ "x"
 clang no  __UINT32_MAX__ 4294967295U
 clang no  __UINT32_TYPE__ unsigned int
+clang no  __UINT64_C(c) c##ULL
 clang no  __UINT64_C_SUFFIX__ ULL
 clang no  __UINT64_FMTX__ "llX"
 clang no  __UINT64_FMTo__ "llo"
@@ -358,6 +422,7 @@ clang no  __UINT64_FMTu__ "llu"
 clang no  __UINT64_FMTx__ "llx"
 clang no  __UINT64_MAX__ 18446744073709551615ULL
 clang no  __UINT64_TYPE__ long long unsigned int
+clang no  __UINT8_C(c) c
 clang no  __UINT8_C_SUFFIX__ 
 clang no  __UINT8_FMTX__ "hhX"
 clang no  __UINT8_FMTo__ "hho"
@@ -365,6 +430,7 @@ clang no  __UINT8_FMTu__ "hhu"
 clang no  __UINT8_FMTx__ "hhx"
 clang no  __UINT8_MAX__ 255
 clang no  __UINT8_TYPE__ unsigned char
+clang no  __UINTMAX_C(c) c##UL
 clang no  __UINTMAX_C_SUFFIX__ UL
 clang no  __UINTMAX_FMTX__ "lX"
 clang no  __UINTMAX_FMTo__ "lo"
@@ -429,7 +495,7 @@ clang no  __UINT_LEAST8_FMTx__ "hhx"
 clang no  __UINT_LEAST8_MAX__ 255
 clang no  __UINT_LEAST8_TYPE__ unsigned char
 clang no  __USER_LABEL_PREFIX__ _
-clang no  __VERSION__ "Apple LLVM 15.0.0 (clang-1500.3.9.4)"
+clang no  __VERSION__ "Apple LLVM 21.0.0 (clang-2100.3.34.2)"
 clang no  __WCHAR_MAX__ 2147483647
 clang no  __WCHAR_TYPE__ int
 clang no  __WCHAR_WIDTH__ 32
@@ -437,7 +503,7 @@ clang no  __WINT_MAX__ 2147483647
 clang no  __WINT_TYPE__ int
 clang no  __WINT_WIDTH__ 32
 clang no  __aarch64__ 1
-clang no  __apple_build_version__ 15000309
+clang no  __apple_build_version__ 21000334
 clang no  __arm64 1
 clang no  __arm64__ 1
 clang no  __clang_literal_encoding__ "UTF-8"
diff --git a/bases/cmake-native/macos-arm/clang/lib_macos_arm64/predefined_macros.txt b/bases/cmake-native/macos-arm/clang/lib_macos_arm64/predefined_macros.txt
index f7f01571e4..30c1d87f8a 100644
--- a/bases/cmake-native/macos-arm/clang/lib_macos_arm64/predefined_macros.txt
+++ b/bases/cmake-native/macos-arm/clang/lib_macos_arm64/predefined_macros.txt
@@ -30,28 +30,55 @@
 #   the characters until the end of the line are used as the macro value.
 # 
 # Created by make_predef_macro_table
-# Thu Oct 17 16:13:17 EDT 2024
+# Mon Oct 19 10:30:08 EDT 2026
 # 
 # C compiler information
 # command: /usr/bin/clang 
 # 
-# Apple clang version 15.0.0 (clang-1500.3.9.4)
-# Target: arm64-apple-darwin23.4.0
+# Apple clang version 21.0.0 (clang-2100.3.34.2)
+# Target: arm64-apple-darwin27.0.0
 # Thread model: posix
 # InstalledDir: /Library/Developer/CommandLineTools/usr/bin
 # 
 # C++ compiler information
 # command: /usr/bin/clang 
 # 
-# Apple clang version 15.0.0 (clang-1500.3.9.4)
-# Target: arm64-apple-darwin23.4.0
+# Apple clang version 21.0.0 (clang-2100.3.34.2)
+# Target: arm64-apple-darwin27.0.0
 # Thread model: posix
 # InstalledDir: /Library/Developer/CommandLineTools/usr/bin
 # 
 clang_cpp no  __DEPRECATED 1
 clang_cpp no  __GNUG__ 4
+clang_cpp no  __GXX_EXPERIMENTAL_CXX0X__ 1
 clang_cpp no  __GXX_WEAK__ 1
 clang_cpp no  __private_extern__ extern
+clang no  TARGET_IPHONE_SIMULATOR 0
+clang no  TARGET_OS_ARROW 1
+clang no  TARGET_OS_BRIDGE 0
+clang no  TARGET_OS_DRIVERKIT 0
+clang no  TARGET_OS_EMBEDDED 0
+clang no  TARGET_OS_FIRMWARE 0
+clang no  TARGET_OS_IOS 0
+clang no  TARGET_OS_IOSMAC 0
+clang no  TARGET_OS_IPHONE 0
+clang no  TARGET_OS_KERNELKIT 0
+clang no  TARGET_OS_LINUX 0
+clang no  TARGET_OS_MAC 1
+clang no  TARGET_OS_MACCATALYST 0
+clang no  TARGET_OS_NANO 0
+clang no  TARGET_OS_OSX 1
+clang no  TARGET_OS_SIMULATOR 0
+clang no  TARGET_OS_TV 0
+clang no  TARGET_OS_UEFI 0
+clang no  TARGET_OS_UIKITFORMAC 0
+clang no  TARGET_OS_UNIX 0
+clang no  TARGET_OS_VISION 0
+clang no  TARGET_OS_WATCH 0
+clang no  TARGET_OS_WIN32 0
+clang no  TARGET_OS_WINDOWS 0
+clang no  TARGET_OS_XR 0
+clang no  _HAS_BUILTIN_AVAILABLE_FEATS 1
 clang no  _LP64 1
 clang no  __AARCH64EL__ 1
 clang no  __AARCH64_CMODEL_SMALL__ 1
@@ -60,9 +87,11 @@ clang no  __APPLE_CC__ 6000
 clang no  __APPLE__ 1
 clang no  __ARM64_ARCH_8__ 1
 clang no  __ARM_64BIT_STATE 1
-clang no  __ARM_ACLE 200
+clang no  __ARM_ACLE 202420
+clang no  __ARM_ACLE_VERSION(year,quarter,patch) (100 * (year) + 10 * (quarter) + (patch))
 clang no  __ARM_ALIGN_MAX_STACK_PWR 4
 clang no  __ARM_ARCH 8
+clang no  __ARM_ARCH_8_2__ 1
 clang no  __ARM_ARCH_8_3__ 1
 clang no  __ARM_ARCH_8_4__ 1
 clang no  __ARM_ARCH_8_5__ 1
@@ -70,6 +99,7 @@ clang no  __ARM_ARCH_ISA_A64 1
 clang no  __ARM_ARCH_PROFILE 'A'
 clang no  __ARM_FEATURE_AES 1
 clang no  __ARM_FEATURE_ATOMICS 1
+clang no  __ARM_FEATURE_BTI 1
 clang no  __ARM_FEATURE_CLZ 1
 clang no  __ARM_FEATURE_COMPLEX 1
 clang no  __ARM_FEATURE_CRC32 1
@@ -86,23 +116,25 @@ clang no  __ARM_FEATURE_IDIV 1
 clang no  __ARM_FEATURE_JCVT 1
 clang no  __ARM_FEATURE_LDREX 0xF
 clang no  __ARM_FEATURE_NUMERIC_MAXMIN 1
+clang no  __ARM_FEATURE_PAUTH 1
 clang no  __ARM_FEATURE_QRDMX 1
 clang no  __ARM_FEATURE_RCPC 1
 clang no  __ARM_FEATURE_SHA2 1
 clang no  __ARM_FEATURE_SHA3 1
 clang no  __ARM_FEATURE_SHA512 1
-clang no  __ARM_FEATURE_SM3 1
-clang no  __ARM_FEATURE_SM4 1
 clang no  __ARM_FEATURE_UNALIGNED 1
 clang no  __ARM_FP16_ARGS 1
 clang no  __ARM_FP16_FORMAT_IEEE 1
 clang no  __ARM_FP 0xE
 clang no  __ARM_NEON 1
 clang no  __ARM_NEON_FP 0xE
+clang no  __ARM_NEON_SVE_BRIDGE 1
 clang no  __ARM_NEON__ 1
 clang no  __ARM_PCS_AAPCS64 1
 clang no  __ARM_SIZEOF_MINIMAL_ENUM 4
 clang no  __ARM_SIZEOF_WCHAR_T 4
+clang no  __ARM_STATE_ZA 1
+clang no  __ARM_STATE_ZT0 1
 clang no  __ATOMIC_ACQUIRE 2
 clang no  __ATOMIC_ACQ_REL 4
 clang no  __ATOMIC_CONSUME 1
@@ -111,7 +143,7 @@ clang no  __ATOMIC_RELEASE 3
 clang no  __ATOMIC_SEQ_CST 5
 clang no  __BIGGEST_ALIGNMENT__ 8
 clang no  __BITINT_MAXWIDTH__ 128
-clang no  __BOOL_WIDTH__ 8
+clang no  __BOOL_WIDTH__ 1
 clang no  __BYTE_ORDER__ __ORDER_LITTLE_ENDIAN__
 clang no  __CHAR_BIT__ 8
 clang no  __CLANG_ATOMIC_BOOL_LOCK_FREE 2
@@ -139,10 +171,11 @@ clang no  __DBL_MAX__ 1.7976931348623157e+308
 clang no  __DBL_MIN_10_EXP__ (-307)
 clang no  __DBL_MIN_EXP__ (-1021)
 clang no  __DBL_MIN__ 2.2250738585072014e-308
+clang no  __DBL_NORM_MAX__ 1.7976931348623157e+308
 clang no  __DECIMAL_DIG__ __LDBL_DECIMAL_DIG__
 clang no  __DYNAMIC__ 1
-clang no  __ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__ 140000
-clang no  __ENVIRONMENT_OS_VERSION_MIN_REQUIRED__ 140000
+clang no  __ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__ 270000
+clang no  __ENVIRONMENT_OS_VERSION_MIN_REQUIRED__ 270000
 clang no  __FINITE_MATH_ONLY__ 0
 clang no  __FLT16_DECIMAL_DIG__ 5
 clang no  __FLT16_DENORM_MIN__ 5.9604644775390625e-8F16
@@ -158,10 +191,12 @@ clang no  __FLT16_MAX__ 6.5504e+4F16
 clang no  __FLT16_MIN_10_EXP__ (-4)
 clang no  __FLT16_MIN_EXP__ (-13)
 clang no  __FLT16_MIN__ 6.103515625e-5F16
+clang no  __FLT16_NORM_MAX__ 6.5504e+4F16
 clang no  __FLT_DECIMAL_DIG__ 9
 clang no  __FLT_DENORM_MIN__ 1.40129846e-45F
 clang no  __FLT_DIG__ 6
 clang no  __FLT_EPSILON__ 1.19209290e-7F
+clang no  __FLT_EVAL_METHOD__ 0
 clang no  __FLT_HAS_DENORM__ 1
 clang no  __FLT_HAS_INFINITY__ 1
 clang no  __FLT_HAS_QUIET_NAN__ 1
@@ -172,9 +207,22 @@ clang no  __FLT_MAX__ 3.40282347e+38F
 clang no  __FLT_MIN_10_EXP__ (-37)
 clang no  __FLT_MIN_EXP__ (-125)
 clang no  __FLT_MIN__ 1.17549435e-38F
+clang no  __FLT_NORM_MAX__ 3.40282347e+38F
 clang no  __FLT_RADIX__ 2
+clang no  __FPCLASS_NEGINF 0x0004
+clang no  __FPCLASS_NEGNORMAL 0x0008
+clang no  __FPCLASS_NEGSUBNORMAL 0x0010
+clang no  __FPCLASS_NEGZERO 0x0020
+clang no  __FPCLASS_POSINF 0x0200
+clang no  __FPCLASS_POSNORMAL 0x0100
+clang no  __FPCLASS_POSSUBNORMAL 0x0080
+clang no  __FPCLASS_POSZERO 0x0040
+clang no  __FPCLASS_QNAN 0x0002
+clang no  __FPCLASS_SNAN 0x0001
 clang no  __FP_FAST_FMA 1
 clang no  __FP_FAST_FMAF 1
+clang no  __FUNCTION_MULTI_VERSIONING_SUPPORT_LEVEL 202430
+clang no  __GCC_ASM_FLAG_OUTPUTS__ 1
 clang no  __GCC_ATOMIC_BOOL_LOCK_FREE 2
 clang no  __GCC_ATOMIC_CHAR16_T_LOCK_FREE 2
 clang no  __GCC_ATOMIC_CHAR32_T_LOCK_FREE 2
@@ -189,6 +237,7 @@ clang no  __GCC_ATOMIC_WCHAR_T_LOCK_FREE 2
 clang no  __GCC_CONSTRUCTIVE_SIZE 64
 clang no  __GCC_DESTRUCTIVE_SIZE 256
 clang no  __GCC_HAVE_DWARF2_CFI_ASM 1
+clang no  __GCC_HAVE_SYNC_COMPARE_AND_SWAP_16 1
 clang no  __GCC_HAVE_SYNC_COMPARE_AND_SWAP_1 1
 clang no  __GCC_HAVE_SYNC_COMPARE_AND_SWAP_2 1
 clang no  __GCC_HAVE_SYNC_COMPARE_AND_SWAP_4 1
@@ -197,26 +246,32 @@ clang no  __GNUC_MINOR__ 2
 clang no  __GNUC_PATCHLEVEL__ 1
 clang no  __GNUC__ 4
 clang no  __GXX_ABI_VERSION 1002
+clang no  __HAVE_FUNCTION_MULTI_VERSIONING 1
+clang no  __INT16_C(c) c
 clang no  __INT16_C_SUFFIX__ 
 clang no  __INT16_FMTd__ "hd"
 clang no  __INT16_FMTi__ "hi"
 clang no  __INT16_MAX__ 32767
 clang no  __INT16_TYPE__ short
+clang no  __INT32_C(c) c
 clang no  __INT32_C_SUFFIX__ 
 clang no  __INT32_FMTd__ "d"
 clang no  __INT32_FMTi__ "i"
 clang no  __INT32_MAX__ 2147483647
 clang no  __INT32_TYPE__ int
+clang no  __INT64_C(c) c##LL
 clang no  __INT64_C_SUFFIX__ LL
 clang no  __INT64_FMTd__ "lld"
 clang no  __INT64_FMTi__ "lli"
 clang no  __INT64_MAX__ 9223372036854775807LL
 clang no  __INT64_TYPE__ long long int
+clang no  __INT8_C(c) c
 clang no  __INT8_C_SUFFIX__ 
 clang no  __INT8_FMTd__ "hhd"
 clang no  __INT8_FMTi__ "hhi"
 clang no  __INT8_MAX__ 127
 clang no  __INT8_TYPE__ signed char
+clang no  __INTMAX_C(c) c##L
 clang no  __INTMAX_C_SUFFIX__ L
 clang no  __INTMAX_FMTd__ "ld"
 clang no  __INTMAX_FMTi__ "li"
@@ -284,6 +339,7 @@ clang no  __LDBL_MAX__ 1.7976931348623157e+308L
 clang no  __LDBL_MIN_10_EXP__ (-307)
 clang no  __LDBL_MIN_EXP__ (-1021)
 clang no  __LDBL_MIN__ 2.2250738585072014e-308L
+clang no  __LDBL_NORM_MAX__ 1.7976931348623157e+308L
 clang no  __LITTLE_ENDIAN__ 1
 clang no  __LLONG_WIDTH__ 64
 clang no  __LONG_LONG_MAX__ 9223372036854775807LL
@@ -291,6 +347,11 @@ clang no  __LONG_MAX__ 9223372036854775807L
 clang no  __LONG_WIDTH__ 64
 clang no  __LP64__ 1
 clang no  __MACH__ 1
+clang no  __MEMORY_SCOPE_DEVICE 1
+clang no  __MEMORY_SCOPE_SINGLE 4
+clang no  __MEMORY_SCOPE_SYSTEM 0
+clang no  __MEMORY_SCOPE_WRKGRP 2
+clang no  __MEMORY_SCOPE_WVFRNT 3
 clang no  __NO_INLINE__ 1
 clang no  __NO_MATH_ERRNO__ 1
 clang no  __OBJC_BOOL_IS_BOOL 1
@@ -337,6 +398,7 @@ clang no  __SIZE_MAX__ 18446744073709551615UL
 clang no  __SIZE_TYPE__ long unsigned int
 clang no  __SIZE_WIDTH__ 64
 clang no  __SSP__ 1
+clang no  __UINT16_C(c) c
 clang no  __UINT16_C_SUFFIX__ 
 clang no  __UINT16_FMTX__ "hX"
 clang no  __UINT16_FMTo__ "ho"
@@ -344,6 +406,7 @@ clang no  __UINT16_FMTu__ "hu"
 clang no  __UINT16_FMTx__ "hx"
 clang no  __UINT16_MAX__ 65535
 clang no  __UINT16_TYPE__ unsigned short
+clang no  __UINT32_C(c) c##U
 clang no  __UINT32_C_SUFFIX__ U
 clang no  __UINT32_FMTX__ "X"
 clang no  __UINT32_FMTo__ "o"
@@ -351,6 +414,7 @@ clang no  __UINT32_FMTu__ "u"
 clang no  __UINT32_FMTx__ "x"
 clang no  __UINT32_MAX__ 4294967295U
 clang no  __UINT32_TYPE__ unsigned int
+clang no  __UINT64_C(c) c##ULL
 clang no  __UINT64_C_SUFFIX__ ULL
 clang no  __UINT64_FMTX__ "llX"
 clang no  __UINT64_FMTo__ "llo"
@@ -358,6 +422,7 @@ clang no  __UINT64_FMTu__ "llu"
 clang no  __UINT64_FMTx__ "llx"
 clang no  __UINT64_MAX__ 18446744073709551615ULL
 clang no  __UINT64_TYPE__ long long unsigned int
+clang no  __UINT8_C(c) c
 clang no  __UINT8_C_SUFFIX__ 
 clang no  __UINT8_FMTX__ "hhX"
 clang no  __UINT8_FMTo__ "hho"
@@ -365,6 +430,7 @@ clang no  __UINT8_FMTu__ "hhu"
 clang no  __UINT8_FMTx__ "hhx"
 clang no  __UINT8_MAX__ 255
 clang no  __UINT8_TYPE__ unsigned char
+clang no  __UINTMAX_C(c) c##UL
 clang no  __UINTMAX_C_SUFFIX__ UL
 clang no  __UINTMAX_FMTX__ "lX"
 clang no  __UINTMAX_FMTo__ "lo"
@@ -429,7 +495,7 @@ clang no  __UINT_LEAST8_FMTx__ "hhx"
 clang no  __UINT_LEAST8_MAX__ 255
 clang no  __UINT_LEAST8_TYPE__ unsigned char
 clang no  __USER_LABEL_PREFIX__ _
-clang no  __VERSION__ "Apple LLVM 15.0.0 (clang-1500.3.9.4)"
+clang no  __VERSION__ "Apple LLVM 21.0.0 (clang-2100.3.34.2)"
 clang no  __WCHAR_MAX__ 2147483647
 clang no  __WCHAR_TYPE__ int
 clang no  __WCHAR_WIDTH__ 32
@@ -437,7 +503,7 @@ clang no  __WINT_MAX__ 2147483647
 clang no  __WINT_TYPE__ int
 clang no  __WINT_WIDTH__ 32
 clang no  __aarch64__ 1
-clang no  __apple_build_version__ 15000309
+clang no  __apple_build_version__ 21000334
 clang no  __arm64 1
 clang no  __arm64__ 1
 clang no  __clang_literal_encoding__ "UTF-8"
diff --git a/bases/cmake-native/macos-x86_64/clang/lib/predefined_macros.txt b/bases/cmake-native/macos-x86_64/clang/lib/predefined_macros.txt
index 4fafa38dd4..7cd16e4540 100644
--- a/bases/cmake-native/macos-x86_64/clang/lib/predefined_macros.txt
+++ b/bases/cmake-native/macos-x86_64/clang/lib/predefined_macros.txt
@@ -30,28 +30,55 @@
 #   the characters until the end of the line are used as the macro value.
 # 
 # Created by make_predef_macro_table
-# Wed Jan  8 14:38:15 EST 2025
+# Mon Oct 19 10:30:08 EDT 2026
 # 
 # C compiler information
-# command: /usr/bin/clang 
+# command: /usr/bin/clang  -arch x86_64
 # 
-# Apple clang version 12.0.5 (clang-1205.0.22.9)
-# Target: x86_64-apple-darwin22.6.0
+# Apple clang version 21.0.0 (clang-2100.3.34.2)
+# Target: x86_64-apple-darwin27.0.0
 # Thread model: posix
 # InstalledDir: /Library/Developer/CommandLineTools/usr/bin
 # 
 # C++ compiler information
-# command: /usr/bin/clang 
+# command: /usr/bin/clang  -arch x86_64
 # 
-# Apple clang version 12.0.5 (clang-1205.0.22.9)
-# Target: x86_64-apple-darwin22.6.0
+# Apple clang version 21.0.0 (clang-2100.3.34.2)
+# Target: x86_64-apple-darwin27.0.0
 # Thread model: posix
 # InstalledDir: /Library/Developer/CommandLineTools/usr/bin
 # 
 clang_cpp no  __DEPRECATED 1
 clang_cpp no  __GNUG__ 4
+clang_cpp no  __GXX_EXPERIMENTAL_CXX0X__ 1
 clang_cpp no  __GXX_WEAK__ 1
 clang_cpp no  __private_extern__ extern
+clang no  TARGET_IPHONE_SIMULATOR 0
+clang no  TARGET_OS_ARROW 0
+clang no  TARGET_OS_BRIDGE 0
+clang no  TARGET_OS_DRIVERKIT 0
+clang no  TARGET_OS_EMBEDDED 0
+clang no  TARGET_OS_FIRMWARE 0
+clang no  TARGET_OS_IOS 0
+clang no  TARGET_OS_IOSMAC 0
+clang no  TARGET_OS_IPHONE 0
+clang no  TARGET_OS_KERNELKIT 0
+clang no  TARGET_OS_LINUX 0
+clang no  TARGET_OS_MAC 1
+clang no  TARGET_OS_MACCATALYST 0
+clang no  TARGET_OS_NANO 0
+clang no  TARGET_OS_OSX 1
+clang no  TARGET_OS_SIMULATOR 0
+clang no  TARGET_OS_TV 0
+clang no  TARGET_OS_UEFI 0
+clang no  TARGET_OS_UIKITFORMAC 0
+clang no  TARGET_OS_UNIX 0
+clang no  TARGET_OS_VISION 0
+clang no  TARGET_OS_WATCH 0
+clang no  TARGET_OS_WIN32 0
+clang no  TARGET_OS_WINDOWS 0
+clang no  TARGET_OS_XR 0
+clang no  _HAS_BUILTIN_AVAILABLE_FEATS 1
 clang no  _LP64 1
 clang no  __APPLE_CC__ 6000
 clang no  __APPLE__ 1
@@ -62,6 +89,8 @@ clang no  __ATOMIC_RELAXED 0
 clang no  __ATOMIC_RELEASE 3
 clang no  __ATOMIC_SEQ_CST 5
 clang no  __BIGGEST_ALIGNMENT__ 16
+clang no  __BITINT_MAXWIDTH__ 8388608
+clang no  __BOOL_WIDTH__ 1
 clang no  __BYTE_ORDER__ __ORDER_LITTLE_ENDIAN__
 clang no  __CHAR_BIT__ 8
 clang no  __CLANG_ATOMIC_BOOL_LOCK_FREE 2
@@ -89,10 +118,11 @@ clang no  __DBL_MAX__ 1.7976931348623157e+308
 clang no  __DBL_MIN_10_EXP__ (-307)
 clang no  __DBL_MIN_EXP__ (-1021)
 clang no  __DBL_MIN__ 2.2250738585072014e-308
+clang no  __DBL_NORM_MAX__ 1.7976931348623157e+308
 clang no  __DECIMAL_DIG__ __LDBL_DECIMAL_DIG__
 clang no  __DYNAMIC__ 1
-clang no  __ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__ 110300
-clang no  __ENVIRONMENT_OS_VERSION_MIN_REQUIRED__ 110300
+clang no  __ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__ 270000
+clang no  __ENVIRONMENT_OS_VERSION_MIN_REQUIRED__ 270000
 clang no  __FINITE_MATH_ONLY__ 0
 clang no  __FLT16_DECIMAL_DIG__ 5
 clang no  __FLT16_DENORM_MIN__ 5.9604644775390625e-8F16
@@ -108,6 +138,7 @@ clang no  __FLT16_MAX__ 6.5504e+4F16
 clang no  __FLT16_MIN_10_EXP__ (-4)
 clang no  __FLT16_MIN_EXP__ (-13)
 clang no  __FLT16_MIN__ 6.103515625e-5F16
+clang no  __FLT16_NORM_MAX__ 6.5504e+4F16
 clang no  __FLT_DECIMAL_DIG__ 9
 clang no  __FLT_DENORM_MIN__ 1.40129846e-45F
 clang no  __FLT_DIG__ 6
@@ -123,7 +154,18 @@ clang no  __FLT_MAX__ 3.40282347e+38F
 clang no  __FLT_MIN_10_EXP__ (-37)
 clang no  __FLT_MIN_EXP__ (-125)
 clang no  __FLT_MIN__ 1.17549435e-38F
+clang no  __FLT_NORM_MAX__ 3.40282347e+38F
 clang no  __FLT_RADIX__ 2
+clang no  __FPCLASS_NEGINF 0x0004
+clang no  __FPCLASS_NEGNORMAL 0x0008
+clang no  __FPCLASS_NEGSUBNORMAL 0x0010
+clang no  __FPCLASS_NEGZERO 0x0020
+clang no  __FPCLASS_POSINF 0x0200
+clang no  __FPCLASS_POSNORMAL 0x0100
+clang no  __FPCLASS_POSSUBNORMAL 0x0080
+clang no  __FPCLASS_POSZERO 0x0040
+clang no  __FPCLASS_QNAN 0x0002
+clang no  __FPCLASS_SNAN 0x0001
 clang no  __FXSR__ 1
 clang no  __GCC_ASM_FLAG_OUTPUTS__ 1
 clang no  __GCC_ATOMIC_BOOL_LOCK_FREE 2
@@ -139,6 +181,7 @@ clang no  __GCC_ATOMIC_TEST_AND_SET_TRUEVAL 1
 clang no  __GCC_ATOMIC_WCHAR_T_LOCK_FREE 2
 clang no  __GCC_CONSTRUCTIVE_SIZE 64
 clang no  __GCC_DESTRUCTIVE_SIZE 64
+clang no  __GCC_HAVE_DWARF2_CFI_ASM 1
 clang no  __GCC_HAVE_SYNC_COMPARE_AND_SWAP_16 1
 clang no  __GCC_HAVE_SYNC_COMPARE_AND_SWAP_1 1
 clang no  __GCC_HAVE_SYNC_COMPARE_AND_SWAP_2 1
@@ -148,26 +191,31 @@ clang no  __GNUC_MINOR__ 2
 clang no  __GNUC_PATCHLEVEL__ 1
 clang no  __GNUC__ 4
 clang no  __GXX_ABI_VERSION 1002
+clang no  __INT16_C(c) c
 clang no  __INT16_C_SUFFIX__ 
 clang no  __INT16_FMTd__ "hd"
 clang no  __INT16_FMTi__ "hi"
 clang no  __INT16_MAX__ 32767
 clang no  __INT16_TYPE__ short
+clang no  __INT32_C(c) c
 clang no  __INT32_C_SUFFIX__ 
 clang no  __INT32_FMTd__ "d"
 clang no  __INT32_FMTi__ "i"
 clang no  __INT32_MAX__ 2147483647
 clang no  __INT32_TYPE__ int
+clang no  __INT64_C(c) c##LL
 clang no  __INT64_C_SUFFIX__ LL
 clang no  __INT64_FMTd__ "lld"
 clang no  __INT64_FMTi__ "lli"
 clang no  __INT64_MAX__ 9223372036854775807LL
 clang no  __INT64_TYPE__ long long int
+clang no  __INT8_C(c) c
 clang no  __INT8_C_SUFFIX__ 
 clang no  __INT8_FMTd__ "hhd"
 clang no  __INT8_FMTi__ "hhi"
 clang no  __INT8_MAX__ 127
 clang no  __INT8_TYPE__ signed char
+clang no  __INTMAX_C(c) c##L
 clang no  __INTMAX_C_SUFFIX__ L
 clang no  __INTMAX_FMTd__ "ld"
 clang no  __INTMAX_FMTi__ "li"
@@ -183,35 +231,45 @@ clang no  __INT_FAST16_FMTd__ "hd"
 clang no  __INT_FAST16_FMTi__ "hi"
 clang no  __INT_FAST16_MAX__ 32767
 clang no  __INT_FAST16_TYPE__ short
+clang no  __INT_FAST16_WIDTH__ 16
 clang no  __INT_FAST32_FMTd__ "d"
 clang no  __INT_FAST32_FMTi__ "i"
 clang no  __INT_FAST32_MAX__ 2147483647
 clang no  __INT_FAST32_TYPE__ int
+clang no  __INT_FAST32_WIDTH__ 32
 clang no  __INT_FAST64_FMTd__ "lld"
 clang no  __INT_FAST64_FMTi__ "lli"
 clang no  __INT_FAST64_MAX__ 9223372036854775807LL
 clang no  __INT_FAST64_TYPE__ long long int
+clang no  __INT_FAST64_WIDTH__ 64
 clang no  __INT_FAST8_FMTd__ "hhd"
 clang no  __INT_FAST8_FMTi__ "hhi"
 clang no  __INT_FAST8_MAX__ 127
 clang no  __INT_FAST8_TYPE__ signed char
+clang no  __INT_FAST8_WIDTH__ 8
 clang no  __INT_LEAST16_FMTd__ "hd"
 clang no  __INT_LEAST16_FMTi__ "hi"
 clang no  __INT_LEAST16_MAX__ 32767
 clang no  __INT_LEAST16_TYPE__ short
+clang no  __INT_LEAST16_WIDTH__ 16
 clang no  __INT_LEAST32_FMTd__ "d"
 clang no  __INT_LEAST32_FMTi__ "i"
 clang no  __INT_LEAST32_MAX__ 2147483647
 clang no  __INT_LEAST32_TYPE__ int
+clang no  __INT_LEAST32_WIDTH__ 32
 clang no  __INT_LEAST64_FMTd__ "lld"
 clang no  __INT_LEAST64_FMTi__ "lli"
 clang no  __INT_LEAST64_MAX__ 9223372036854775807LL
 clang no  __INT_LEAST64_TYPE__ long long int
+clang no  __INT_LEAST64_WIDTH__ 64
 clang no  __INT_LEAST8_FMTd__ "hhd"
 clang no  __INT_LEAST8_FMTi__ "hhi"
 clang no  __INT_LEAST8_MAX__ 127
 clang no  __INT_LEAST8_TYPE__ signed char
+clang no  __INT_LEAST8_WIDTH__ 8
 clang no  __INT_MAX__ 2147483647
+clang no  __INT_WIDTH__ 32
+clang no  __LAHF_SAHF__ 1
 clang no  __LDBL_DECIMAL_DIG__ 21
 clang no  __LDBL_DENORM_MIN__ 3.64519953188247460253e-4951L
 clang no  __LDBL_DIG__ 18
@@ -226,13 +284,22 @@ clang no  __LDBL_MAX__ 1.18973149535723176502e+4932L
 clang no  __LDBL_MIN_10_EXP__ (-4931)
 clang no  __LDBL_MIN_EXP__ (-16381)
 clang no  __LDBL_MIN__ 3.36210314311209350626e-4932L
+clang no  __LDBL_NORM_MAX__ 1.18973149535723176502e+4932L
 clang no  __LITTLE_ENDIAN__ 1
+clang no  __LLONG_WIDTH__ 64
 clang no  __LONG_LONG_MAX__ 9223372036854775807LL
 clang no  __LONG_MAX__ 9223372036854775807L
+clang no  __LONG_WIDTH__ 64
 clang no  __LP64__ 1
 clang no  __MACH__ 1
+clang no  __MEMORY_SCOPE_DEVICE 1
+clang no  __MEMORY_SCOPE_SINGLE 4
+clang no  __MEMORY_SCOPE_SYSTEM 0
+clang no  __MEMORY_SCOPE_WRKGRP 2
+clang no  __MEMORY_SCOPE_WVFRNT 3
 clang no  __MMX__ 1
 clang no  __NO_INLINE__ 1
+clang no  __NO_MATH_ERRNO__ 1
 clang no  __NO_MATH_INLINES 1
 clang no  __OBJC_BOOL_IS_BOOL 0
 clang no  __OPENCL_MEMORY_SCOPE_ALL_SVM_DEVICES 3
@@ -256,6 +323,7 @@ clang no  __SCHAR_MAX__ 127
 clang no  __SEG_FS 1
 clang no  __SEG_GS 1
 clang no  __SHRT_MAX__ 32767
+clang no  __SHRT_WIDTH__ 16
 clang no  __SIG_ATOMIC_MAX__ 2147483647
 clang no  __SIG_ATOMIC_WIDTH__ 32
 clang no  __SIZEOF_DOUBLE__ 8
@@ -286,6 +354,7 @@ clang no  __SSE_MATH__ 1
 clang no  __SSE__ 1
 clang no  __SSP__ 1
 clang no  __SSSE3__ 1
+clang no  __UINT16_C(c) c
 clang no  __UINT16_C_SUFFIX__ 
 clang no  __UINT16_FMTX__ "hX"
 clang no  __UINT16_FMTo__ "ho"
@@ -293,6 +362,7 @@ clang no  __UINT16_FMTu__ "hu"
 clang no  __UINT16_FMTx__ "hx"
 clang no  __UINT16_MAX__ 65535
 clang no  __UINT16_TYPE__ unsigned short
+clang no  __UINT32_C(c) c##U
 clang no  __UINT32_C_SUFFIX__ U
 clang no  __UINT32_FMTX__ "X"
 clang no  __UINT32_FMTo__ "o"
@@ -300,6 +370,7 @@ clang no  __UINT32_FMTu__ "u"
 clang no  __UINT32_FMTx__ "x"
 clang no  __UINT32_MAX__ 4294967295U
 clang no  __UINT32_TYPE__ unsigned int
+clang no  __UINT64_C(c) c##ULL
 clang no  __UINT64_C_SUFFIX__ ULL
 clang no  __UINT64_FMTX__ "llX"
 clang no  __UINT64_FMTo__ "llo"
@@ -307,6 +378,7 @@ clang no  __UINT64_FMTu__ "llu"
 clang no  __UINT64_FMTx__ "llx"
 clang no  __UINT64_MAX__ 18446744073709551615ULL
 clang no  __UINT64_TYPE__ long long unsigned int
+clang no  __UINT8_C(c) c
 clang no  __UINT8_C_SUFFIX__ 
 clang no  __UINT8_FMTX__ "hhX"
 clang no  __UINT8_FMTo__ "hho"
@@ -314,6 +386,7 @@ clang no  __UINT8_FMTu__ "hhu"
 clang no  __UINT8_FMTx__ "hhx"
 clang no  __UINT8_MAX__ 255
 clang no  __UINT8_TYPE__ unsigned char
+clang no  __UINTMAX_C(c) c##UL
 clang no  __UINTMAX_C_SUFFIX__ UL
 clang no  __UINTMAX_FMTX__ "lX"
 clang no  __UINTMAX_FMTo__ "lo"
@@ -378,7 +451,7 @@ clang no  __UINT_LEAST8_FMTx__ "hhx"
 clang no  __UINT_LEAST8_MAX__ 255
 clang no  __UINT_LEAST8_TYPE__ unsigned char
 clang no  __USER_LABEL_PREFIX__ _
-clang no  __VERSION__ "Apple LLVM 12.0.5 (clang-1205.0.22.9)"
+clang no  __VERSION__ "Apple LLVM 21.0.0 (clang-2100.3.34.2)"
 clang no  __WCHAR_MAX__ 2147483647
 clang no  __WCHAR_TYPE__ int
 clang no  __WCHAR_WIDTH__ 32
@@ -387,7 +460,9 @@ clang no  __WINT_TYPE__ int
 clang no  __WINT_WIDTH__ 32
 clang no  __amd64 1
 clang no  __amd64__ 1
-clang no  __apple_build_version__ 12050022
+clang no  __apple_build_version__ 21000334
+clang no  __clang_literal_encoding__ "UTF-8"
+clang no  __clang_wide_literal_encoding__ "UTF-32"
 clang no  __code_model_small__ 1
 clang no  __core2 1
 clang no  __core2__ 1
diff --git a/bases/cmake-native/macos-x86_64/clang/lib_macos_x86_64/predefined_macros.txt b/bases/cmake-native/macos-x86_64/clang/lib_macos_x86_64/predefined_macros.txt
index 4fafa38dd4..7cd16e4540 100644
--- a/bases/cmake-native/macos-x86_64/clang/lib_macos_x86_64/predefined_macros.txt
+++ b/bases/cmake-native/macos-x86_64/clang/lib_macos_x86_64/predefined_macros.txt
@@ -30,28 +30,55 @@
 #   the characters until the end of the line are used as the macro value.
 # 
 # Created by make_predef_macro_table
-# Wed Jan  8 14:38:15 EST 2025
+# Mon Oct 19 10:30:08 EDT 2026
 # 
 # C compiler information
-# command: /usr/bin/clang 
+# command: /usr/bin/clang  -arch x86_64
 # 
-# Apple clang version 12.0.5 (clang-1205.0.22.9)
-# Target: x86_64-apple-darwin22.6.0
+# Apple clang version 21.0.0 (clang-2100.3.34.2)
+# Target: x86_64-apple-darwin27.0.0
 # Thread model: posix
 # InstalledDir: /Library/Developer/CommandLineTools/usr/bin
 # 
 # C++ compiler information
-# command: /usr/bin/clang 
+# command: /usr/bin/clang  -arch x86_64
 # 
-# Apple clang version 12.0.5 (clang-1205.0.22.9)
-# Target: x86_64-apple-darwin22.6.0
+# Apple clang version 21.0.0 (clang-2100.3.34.2)
+# Target: x86_64-apple-darwin27.0.0
 # Thread model: posix
 # InstalledDir: /Library/Developer/CommandLineTools/usr/bin
 # 
 clang_cpp no  __DEPRECATED 1
 clang_cpp no  __GNUG__ 4
+clang_cpp no  __GXX_EXPERIMENTAL_CXX0X__ 1
 clang_cpp no  __GXX_WEAK__ 1
 clang_cpp no  __private_extern__ extern
+clang no  TARGET_IPHONE_SIMULATOR 0
+clang no  TARGET_OS_ARROW 0
+clang no  TARGET_OS_BRIDGE 0
+clang no  TARGET_OS_DRIVERKIT 0
+clang no  TARGET_OS_EMBEDDED 0
+clang no  TARGET_OS_FIRMWARE 0
+clang no  TARGET_OS_IOS 0
+clang no  TARGET_OS_IOSMAC 0
+clang no  TARGET_OS_IPHONE 0
+clang no  TARGET_OS_KERNELKIT 0
+clang no  TARGET_OS_LINUX 0
+clang no  TARGET_OS_MAC 1
+clang no  TARGET_OS_MACCATALYST 0
+clang no  TARGET_OS_NANO 0
+clang no  TARGET_OS_OSX 1
+clang no  TARGET_OS_SIMULATOR 0
+clang no  TARGET_OS_TV 0
+clang no  TARGET_OS_UEFI 0
+clang no  TARGET_OS_UIKITFORMAC 0
+clang no  TARGET_OS_UNIX 0
+clang no  TARGET_OS_VISION 0
+clang no  TARGET_OS_WATCH 0
+clang no  TARGET_OS_WIN32 0
+clang no  TARGET_OS_WINDOWS 0
+clang no  TARGET_OS_XR 0
+clang no  _HAS_BUILTIN_AVAILABLE_FEATS 1
 clang no  _LP64 1
 clang no  __APPLE_CC__ 6000
 clang no  __APPLE__ 1
@@ -62,6 +89,8 @@ clang no  __ATOMIC_RELAXED 0
 clang no  __ATOMIC_RELEASE 3
 clang no  __ATOMIC_SEQ_CST 5
 clang no  __BIGGEST_ALIGNMENT__ 16
+clang no  __BITINT_MAXWIDTH__ 8388608
+clang no  __BOOL_WIDTH__ 1
 clang no  __BYTE_ORDER__ __ORDER_LITTLE_ENDIAN__
 clang no  __CHAR_BIT__ 8
 clang no  __CLANG_ATOMIC_BOOL_LOCK_FREE 2
@@ -89,10 +118,11 @@ clang no  __DBL_MAX__ 1.7976931348623157e+308
 clang no  __DBL_MIN_10_EXP__ (-307)
 clang no  __DBL_MIN_EXP__ (-1021)
 clang no  __DBL_MIN__ 2.2250738585072014e-308
+clang no  __DBL_NORM_MAX__ 1.7976931348623157e+308
 clang no  __DECIMAL_DIG__ __LDBL_DECIMAL_DIG__
 clang no  __DYNAMIC__ 1
-clang no  __ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__ 110300
-clang no  __ENVIRONMENT_OS_VERSION_MIN_REQUIRED__ 110300
+clang no  __ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__ 270000
+clang no  __ENVIRONMENT_OS_VERSION_MIN_REQUIRED__ 270000
 clang no  __FINITE_MATH_ONLY__ 0
 clang no  __FLT16_DECIMAL_DIG__ 5
 clang no  __FLT16_DENORM_MIN__ 5.9604644775390625e-8F16
@@ -108,6 +138,7 @@ clang no  __FLT16_MAX__ 6.5504e+4F16
 clang no  __FLT16_MIN_10_EXP__ (-4)
 clang no  __FLT16_MIN_EXP__ (-13)
 clang no  __FLT16_MIN__ 6.103515625e-5F16
+clang no  __FLT16_NORM_MAX__ 6.5504e+4F16
 clang no  __FLT_DECIMAL_DIG__ 9
 clang no  __FLT_DENORM_MIN__ 1.40129846e-45F
 clang no  __FLT_DIG__ 6
@@ -123,7 +154,18 @@ clang no  __FLT_MAX__ 3.40282347e+38F
 clang no  __FLT_MIN_10_EXP__ (-37)
 clang no  __FLT_MIN_EXP__ (-125)
 clang no  __FLT_MIN__ 1.17549435e-38F
+clang no  __FLT_NORM_MAX__ 3.40282347e+38F
 clang no  __FLT_RADIX__ 2
+clang no  __FPCLASS_NEGINF 0x0004
+clang no  __FPCLASS_NEGNORMAL 0x0008
+clang no  __FPCLASS_NEGSUBNORMAL 0x0010
+clang no  __FPCLASS_NEGZERO 0x0020
+clang no  __FPCLASS_POSINF 0x0200
+clang no  __FPCLASS_POSNORMAL 0x0100
+clang no  __FPCLASS_POSSUBNORMAL 0x0080
+clang no  __FPCLASS_POSZERO 0x0040
+clang no  __FPCLASS_QNAN 0x0002
+clang no  __FPCLASS_SNAN 0x0001
 clang no  __FXSR__ 1
 clang no  __GCC_ASM_FLAG_OUTPUTS__ 1
 clang no  __GCC_ATOMIC_BOOL_LOCK_FREE 2
@@ -139,6 +181,7 @@ clang no  __GCC_ATOMIC_TEST_AND_SET_TRUEVAL 1
 clang no  __GCC_ATOMIC_WCHAR_T_LOCK_FREE 2
 clang no  __GCC_CONSTRUCTIVE_SIZE 64
 clang no  __GCC_DESTRUCTIVE_SIZE 64
+clang no  __GCC_HAVE_DWARF2_CFI_ASM 1
 clang no  __GCC_HAVE_SYNC_COMPARE_AND_SWAP_16 1
 clang no  __GCC_HAVE_SYNC_COMPARE_AND_SWAP_1 1
 clang no  __GCC_HAVE_SYNC_COMPARE_AND_SWAP_2 1
@@ -148,26 +191,31 @@ clang no  __GNUC_MINOR__ 2
 clang no  __GNUC_PATCHLEVEL__ 1
 clang no  __GNUC__ 4
 clang no  __GXX_ABI_VERSION 1002
+clang no  __INT16_C(c) c
 clang no  __INT16_C_SUFFIX__ 
 clang no  __INT16_FMTd__ "hd"
 clang no  __INT16_FMTi__ "hi"
 clang no  __INT16_MAX__ 32767
 clang no  __INT16_TYPE__ short
+clang no  __INT32_C(c) c
 clang no  __INT32_C_SUFFIX__ 
 clang no  __INT32_FMTd__ "d"
 clang no  __INT32_FMTi__ "i"
 clang no  __INT32_MAX__ 2147483647
 clang no  __INT32_TYPE__ int
+clang no  __INT64_C(c) c##LL
 clang no  __INT64_C_SUFFIX__ LL
 clang no  __INT64_FMTd__ "lld"
 clang no  __INT64_FMTi__ "lli"
 clang no  __INT64_MAX__ 9223372036854775807LL
 clang no  __INT64_TYPE__ long long int
+clang no  __INT8_C(c) c
 clang no  __INT8_C_SUFFIX__ 
 clang no  __INT8_FMTd__ "hhd"
 clang no  __INT8_FMTi__ "hhi"
 clang no  __INT8_MAX__ 127
 clang no  __INT8_TYPE__ signed char
+clang no  __INTMAX_C(c) c##L
 clang no  __INTMAX_C_SUFFIX__ L
 clang no  __INTMAX_FMTd__ "ld"
 clang no  __INTMAX_FMTi__ "li"
@@ -183,35 +231,45 @@ clang no  __INT_FAST16_FMTd__ "hd"
 clang no  __INT_FAST16_FMTi__ "hi"
 clang no  __INT_FAST16_MAX__ 32767
 clang no  __INT_FAST16_TYPE__ short
+clang no  __INT_FAST16_WIDTH__ 16
 clang no  __INT_FAST32_FMTd__ "d"
 clang no  __INT_FAST32_FMTi__ "i"
 clang no  __INT_FAST32_MAX__ 2147483647
 clang no  __INT_FAST32_TYPE__ int
+clang no  __INT_FAST32_WIDTH__ 32
 clang no  __INT_FAST64_FMTd__ "lld"
 clang no  __INT_FAST64_FMTi__ "lli"
 clang no  __INT_FAST64_MAX__ 9223372036854775807LL
 clang no  __INT_FAST64_TYPE__ long long int
+clang no  __INT_FAST64_WIDTH__ 64
 clang no  __INT_FAST8_FMTd__ "hhd"
 clang no  __INT_FAST8_FMTi__ "hhi"
 clang no  __INT_FAST8_MAX__ 127
 clang no  __INT_FAST8_TYPE__ signed char
+clang no  __INT_FAST8_WIDTH__ 8
 clang no  __INT_LEAST16_FMTd__ "hd"
 clang no  __INT_LEAST16_FMTi__ "hi"
 clang no  __INT_LEAST16_MAX__ 32767
 clang no  __INT_LEAST16_TYPE__ short
+clang no  __INT_LEAST16_WIDTH__ 16
 clang no  __INT_LEAST32_FMTd__ "d"
 clang no  __INT_LEAST32_FMTi__ "i"
 clang no  __INT_LEAST32_MAX__ 2147483647
 clang no  __INT_LEAST32_TYPE__ int
+clang no  __INT_LEAST32_WIDTH__ 32
 clang no  __INT_LEAST64_FMTd__ "lld"
 clang no  __INT_LEAST64_FMTi__ "lli"
 clang no  __INT_LEAST64_MAX__ 9223372036854775807LL
 clang no  __INT_LEAST64_TYPE__ long long int
+clang no  __INT_LEAST64_WIDTH__ 64
 clang no  __INT_LEAST8_FMTd__ "hhd"
 clang no  __INT_LEAST8_FMTi__ "hhi"
 clang no  __INT_LEAST8_MAX__ 127
 clang no  __INT_LEAST8_TYPE__ signed char
+clang no  __INT_LEAST8_WIDTH__ 8
 clang no  __INT_MAX__ 2147483647
+clang no  __INT_WIDTH__ 32
+clang no  __LAHF_SAHF__ 1
 clang no  __LDBL_DECIMAL_DIG__ 21
 clang no  __LDBL_DENORM_MIN__ 3.64519953188247460253e-4951L
 clang no  __LDBL_DIG__ 18
@@ -226,13 +284,22 @@ clang no  __LDBL_MAX__ 1.18973149535723176502e+4932L
 clang no  __LDBL_MIN_10_EXP__ (-4931)
 clang no  __LDBL_MIN_EXP__ (-16381)
 clang no  __LDBL_MIN__ 3.36210314311209350626e-4932L
+clang no  __LDBL_NORM_MAX__ 1.18973149535723176502e+4932L
 clang no  __LITTLE_ENDIAN__ 1
+clang no  __LLONG_WIDTH__ 64
 clang no  __LONG_LONG_MAX__ 9223372036854775807LL
 clang no  __LONG_MAX__ 9223372036854775807L
+clang no  __LONG_WIDTH__ 64
 clang no  __LP64__ 1
 clang no  __MACH__ 1
+clang no  __MEMORY_SCOPE_DEVICE 1
+clang no  __MEMORY_SCOPE_SINGLE 4
+clang no  __MEMORY_SCOPE_SYSTEM 0
+clang no  __MEMORY_SCOPE_WRKGRP 2
+clang no  __MEMORY_SCOPE_WVFRNT 3
 clang no  __MMX__ 1
 clang no  __NO_INLINE__ 1
+clang no  __NO_MATH_ERRNO__ 1
 clang no  __NO_MATH_INLINES 1
 clang no  __OBJC_BOOL_IS_BOOL 0
 clang no  __OPENCL_MEMORY_SCOPE_ALL_SVM_DEVICES 3
@@ -256,6 +323,7 @@ clang no  __SCHAR_MAX__ 127
 clang no  __SEG_FS 1
 clang no  __SEG_GS 1
 clang no  __SHRT_MAX__ 32767
+clang no  __SHRT_WIDTH__ 16
 clang no  __SIG_ATOMIC_MAX__ 2147483647
 clang no  __SIG_ATOMIC_WIDTH__ 32
 clang no  __SIZEOF_DOUBLE__ 8
@@ -286,6 +354,7 @@ clang no  __SSE_MATH__ 1
 clang no  __SSE__ 1
 clang no  __SSP__ 1
 clang no  __SSSE3__ 1
+clang no  __UINT16_C(c) c
 clang no  __UINT16_C_SUFFIX__ 
 clang no  __UINT16_FMTX__ "hX"
 clang no  __UINT16_FMTo__ "ho"
@@ -293,6 +362,7 @@ clang no  __UINT16_FMTu__ "hu"
 clang no  __UINT16_FMTx__ "hx"
 clang no  __UINT16_MAX__ 65535
 clang no  __UINT16_TYPE__ unsigned short
+clang no  __UINT32_C(c) c##U
 clang no  __UINT32_C_SUFFIX__ U
 clang no  __UINT32_FMTX__ "X"
 clang no  __UINT32_FMTo__ "o"
@@ -300,6 +370,7 @@ clang no  __UINT32_FMTu__ "u"
 clang no  __UINT32_FMTx__ "x"
 clang no  __UINT32_MAX__ 4294967295U
 clang no  __UINT32_TYPE__ unsigned int
+clang no  __UINT64_C(c) c##ULL
 clang no  __UINT64_C_SUFFIX__ ULL
 clang no  __UINT64_FMTX__ "llX"
 clang no  __UINT64_FMTo__ "llo"
@@ -307,6 +378,7 @@ clang no  __UINT64_FMTu__ "llu"
 clang no  __UINT64_FMTx__ "llx"
 clang no  __UINT64_MAX__ 18446744073709551615ULL
 clang no  __UINT64_TYPE__ long long unsigned int
+clang no  __UINT8_C(c) c
 clang no  __UINT8_C_SUFFIX__ 
 clang no  __UINT8_FMTX__ "hhX"
 clang no  __UINT8_FMTo__ "hho"
@@ -314,6 +386,7 @@ clang no  __UINT8_FMTu__ "hhu"
 clang no  __UINT8_FMTx__ "hhx"
 clang no  __UINT8_MAX__ 255
 clang no  __UINT8_TYPE__ unsigned char
+clang no  __UINTMAX_C(c) c##UL
 clang no  __UINTMAX_C_SUFFIX__ UL
 clang no  __UINTMAX_FMTX__ "lX"
 clang no  __UINTMAX_FMTo__ "lo"
@@ -378,7 +451,7 @@ clang no  __UINT_LEAST8_FMTx__ "hhx"
 clang no  __UINT_LEAST8_MAX__ 255
 clang no  __UINT_LEAST8_TYPE__ unsigned char
 clang no  __USER_LABEL_PREFIX__ _
-clang no  __VERSION__ "Apple LLVM 12.0.5 (clang-1205.0.22.9)"
+clang no  __VERSION__ "Apple LLVM 21.0.0 (clang-2100.3.34.2)"
 clang no  __WCHAR_MAX__ 2147483647
 clang no  __WCHAR_TYPE__ int
 clang no  __WCHAR_WIDTH__ 32
@@ -387,7 +460,9 @@ clang no  __WINT_TYPE__ int
 clang no  __WINT_WIDTH__ 32
 clang no  __amd64 1
 clang no  __amd64__ 1
-clang no  __apple_build_version__ 12050022
+clang no  __apple_build_version__ 21000334
+clang no  __clang_literal_encoding__ "UTF-8"
+clang no  __clang_wide_literal_encoding__ "UTF-32"
 clang no  __code_model_small__ 1
 clang no  __core2 1
 clang no  __core2__ 1
diff --git a/util/Changes b/util/Changes
index 2b5d271878..4fac26326f 100644
--- a/util/Changes
+++ b/util/Changes
@@ -1,5 +1,27 @@
 Version 7.1
 
+10/19/26  [GH #319]
+Clang's __FLT_EVAL_METHOD__ and the #embed macros in make_predef_macro_table
+
+Clang 13 and later implement __FLT_EVAL_METHOD__ as a builtin macro (its
+value can be changed by "#pragma clang fp eval_method"), so it is not listed
+in the -dM output used by make_predef_macro_table, and a predefined_macros.txt
+file created from such a compiler did not define it.  FLT_EVAL_METHOD (from
+<float.h>) then expanded to an undeclared identifier.  When __FLT_EVAL_METHOD__
+is missing from the -dM output, make_predef_macro_table now preprocesses the
+macro name to get its value and adds an entry for it.
+
+The __STDC_EMBED_NOT_FOUND__, __STDC_EMBED_FOUND__ and __STDC_EMBED_EMPTY__
+macros are now also suppressed, since the front end defines them itself when
+#embed is enabled (which depends on the emulated compiler version).
+
+The predefined_macros.txt files of the macOS clang bases have been regenerated
+with Apple clang 21.0.0 (clang-2100.3.34.2) and the macOS 27 SDK; the x86_64
+files were created on an arm64 host with "-arch x86_64".  Among other things,
+they now define __GCC_CONSTRUCTIVE_SIZE and __GCC_DESTRUCTIVE_SIZE, which
+libc++ uses from C++17 on to define the hardware interference sizes.
+
+
 10/15/26  [GH #307]
 Suppress the blocks macros in make_predef_macro_table output
 
diff --git a/util/make_predef_macro_table b/util/make_predef_macro_table
index 63bf663002..c639894cf1 100755
--- a/util/make_predef_macro_table
+++ b/util/make_predef_macro_table
@@ -78,6 +78,7 @@ get_predefined_macros()
   echo  >>info.tmp
   if [ $result -eq 0 ] ; then
     $cmd $extra_opts -E -dM $file >$output
+    add_flt_eval_method $cmd $output $file
   else
     echo "make_predef_macro_table: $cmd returned a non-zero status."
     echo "make_predef_macro_table: $header omitted."
@@ -85,6 +86,27 @@ get_predefined_macros()
   fi
 }
 
+#
+# Clang 13 and later implement __FLT_EVAL_METHOD__ as a builtin macro (its
+# value can be changed by "#pragma clang fp eval_method"), so -dM does not
+# list it.  If it is missing from the -dM output, preprocess the macro name
+# to get its value and add a definition for it.
+#
+add_flt_eval_method()
+{
+  fem_cmd=$1
+  fem_output=$2
+  fem_file=fem.${3##*.}
+  if ! grep "^#define __FLT_EVAL_METHOD__ " $fem_output >/dev/null ; then
+    echo "__FLT_EVAL_METHOD__" >$fem_file
+    fem_value=`$fem_cmd $extra_opts -E -P $fem_file | sed -e "/^ *$/d"`
+    if [ -n "$fem_value" ] && [ "$fem_value" != "__FLT_EVAL_METHOD__" ] ; then
+      echo "#define __FLT_EVAL_METHOD__ $fem_value" >>$fem_output
+    fi
+    rm -f $fem_file
+  fi
+}
+
 #
 # Reformat the list of #defines to the form expected by the front end.
 #
@@ -140,6 +162,9 @@ delete_unneeded_entries()
   unneeded="$unneeded __STDC_NO_VLA__"
   unneeded="$unneeded __STDC_UTF_16__"
   unneeded="$unneeded __STDC_UTF_32__"
+  unneeded="$unneeded __STDC_EMBED_NOT_FOUND__"
+  unneeded="$unneeded __STDC_EMBED_FOUND__"
+  unneeded="$unneeded __STDC_EMBED_EMPTY__"
   unneeded="$unneeded __STDCPP_THREADS__"
   unneeded="$unneeded __STDCPP_DEFAULT_NEW_ALIGNMENT__"
   unneeded="$unneeded __GXX_RTTI"

From 1729d15329c669f151d37dcd66868dc24020aa54 Mon Sep 17 00:00:00 2001
From: Matt Borland <matt@mattborland.com>
Date: Mon, 19 Oct 2026 11:05:34 -0400
Subject: [PATCH 4/4] Add more extensive rationale []

---
 util/Changes                 |  9 ++++++---
 util/make_predef_macro_table | 24 ++++++++++++++++++++----
 2 files changed, 26 insertions(+), 7 deletions(-)

diff --git a/util/Changes b/util/Changes
index 4fac26326f..ba3575670e 100644
--- a/util/Changes
+++ b/util/Changes
@@ -7,9 +7,12 @@ Clang 13 and later implement __FLT_EVAL_METHOD__ as a builtin macro (its
 value can be changed by "#pragma clang fp eval_method"), so it is not listed
 in the -dM output used by make_predef_macro_table, and a predefined_macros.txt
 file created from such a compiler did not define it.  FLT_EVAL_METHOD (from
-<float.h>) then expanded to an undeclared identifier.  When __FLT_EVAL_METHOD__
-is missing from the -dM output, make_predef_macro_table now preprocesses the
-macro name to get its value and adds an entry for it.
+<float.h>) then expanded to an undeclared identifier.  This affects clang on
+all hosts, not only macOS.  When __FLT_EVAL_METHOD__ is missing from the -dM
+output, make_predef_macro_table now preprocesses the macro name to get its
+value and adds an entry for it.  The test is on the -dM output rather than on
+--clang, since on macOS the default gcc and g++ commands are clang.  GCC lists
+the macro in its -dM output, so tables created with GCC are not affected.
 
 The __STDC_EMBED_NOT_FOUND__, __STDC_EMBED_FOUND__ and __STDC_EMBED_EMPTY__
 macros are now also suppressed, since the front end defines them itself when
diff --git a/util/make_predef_macro_table b/util/make_predef_macro_table
index c639894cf1..9097c407fb 100755
--- a/util/make_predef_macro_table
+++ b/util/make_predef_macro_table
@@ -87,10 +87,26 @@ get_predefined_macros()
 }
 
 #
-# Clang 13 and later implement __FLT_EVAL_METHOD__ as a builtin macro (its
-# value can be changed by "#pragma clang fp eval_method"), so -dM does not
-# list it.  If it is missing from the -dM output, preprocess the macro name
-# to get its value and add a definition for it.
+# Clang 13 and later implement __FLT_EVAL_METHOD__ as a builtin macro rather
+# than a predefined one (its value can be changed within a translation unit
+# by "#pragma clang fp eval_method"), so -dM does not list it.  The front end
+# does not define it either, so without an entry in predefined_macros.txt,
+# FLT_EVAL_METHOD from <float.h> expands to an undeclared identifier.  This
+# affects clang on all hosts, not just macOS.
+#
+# When the macro is missing from the -dM output, preprocess the macro name to
+# get its value and add a definition for it.  The value is target-dependent
+# (e.g., 2 with "-m32 -mno-sse"), so it is computed with the same options as
+# the -dM run rather than assumed to be 0.  The temporary file has the same
+# suffix as the -dM input, so the value is computed in the same language
+# mode.  If the compiler does not define the macro at all, the name comes back
+# unchanged and nothing is added.
+#
+# The test is on the -dM output rather than on --clang because on macOS the
+# default gcc and g++ commands are Apple clang, so a GNU table made there with
+# the default commands needs this too.  GCC always lists __FLT_EVAL_METHOD__
+# in its -dM output (as does clang before version 13), so for those compilers
+# the grep finds it and the table is left exactly as -dM produced it.
 #
 add_flt_eval_method()
 {