[llvm] b8f60c6 - [gn build] Port c01794e7ae8e

[LLVM GN Syncbot via llvm-commits]

Author: LLVM GN Syncbot
Date: 2023-08-31T20:11:24Z
New Revision: b8f60c699866d8de14663c95b38575e5ed74067f

URL: https://github.com/llvm/llvm-project/commit/b8f60c699866d8de14663c95b38575e5ed74067f
DIFF: https://github.com/llvm/llvm-project/commit/b8f60c699866d8de14663c95b38575e5ed74067f.diff

LOG: [gn build] Port c01794e7ae8e

Added: 
    

Modified: 
    llvm/utils/gn/secondary/libcxx/include/BUILD.gn

Removed: 
    


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diff  --git a/llvm/utils/gn/secondary/libcxx/include/BUILD.gn b/llvm/utils/gn/secondary/libcxx/include/BUILD.gn
index e865c619687482..53d78e0365a8f2 100644
--- a/llvm/utils/gn/secondary/libcxx/include/BUILD.gn
+++ b/llvm/utils/gn/secondary/libcxx/include/BUILD.gn
@@ -611,6 +611,7 @@ if (current_toolchain == default_toolchain) {
       "__memory_resource/unsynchronized_pool_resource.h",
       "__mutex/lock_guard.h",
       "__mutex/mutex.h",
+      "__mutex/once_flag.h",
       "__mutex/tag_types.h",
       "__mutex/unique_lock.h",
       "__node_handle",