[llvm] [gn build] Port 7226f424bfe9 (PR #194975)

[Peter Collingbourne via llvm-commits]

https://github.com/pcc created https://github.com/llvm/llvm-project/pull/194975

None

>From 055de4d3f5e8a1f50a2a2d6d810e6891c824129c Mon Sep 17 00:00:00 2001
From: Peter Collingbourne <peter at pcc.me.uk>
Date: Wed, 29 Apr 2026 16:06:18 -0700
Subject: [PATCH] =?UTF-8?q?[=F0=9D=98=80=F0=9D=97=BD=F0=9D=97=BF]=20initia?=
 =?UTF-8?q?l=20version?=
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Created using spr 1.3.6-beta.1
---
 llvm/utils/gn/secondary/libcxx/include/BUILD.gn | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/llvm/utils/gn/secondary/libcxx/include/BUILD.gn b/llvm/utils/gn/secondary/libcxx/include/BUILD.gn
index ea61a0fd11b0b..022266a7cfebf 100644
--- a/llvm/utils/gn/secondary/libcxx/include/BUILD.gn
+++ b/llvm/utils/gn/secondary/libcxx/include/BUILD.gn
@@ -1205,9 +1205,12 @@ if (current_toolchain == default_toolchain) {
       "__locale_dir/support/freebsd.h",
       "__locale_dir/support/fuchsia.h",
       "__locale_dir/support/linux.h",
+      "__locale_dir/support/llvm_libc.h",
       "__locale_dir/support/netbsd.h",
       "__locale_dir/support/newlib.h",
       "__locale_dir/support/no_locale/characters.h",
+      "__locale_dir/support/no_locale/conversions.h",
+      "__locale_dir/support/no_locale/formatting.h",
       "__locale_dir/support/no_locale/strtonum.h",
       "__locale_dir/support/windows.h",
       "__locale_dir/time.h",