[llvm] [gn build] Port f1aeaa7bd552 (PR #207458)

[Nico Weber via llvm-commits]

https://github.com/nico created https://github.com/llvm/llvm-project/pull/207458

None

>From 27a408a629a30e4722d20519a4eb454395cd5be6 Mon Sep 17 00:00:00 2001
From: Nico Weber <thakis at chromium.org>
Date: Fri, 3 Jul 2026 21:38:49 +0200
Subject: [PATCH] [gn build] Port f1aeaa7bd552

---
 llvm/utils/gn/secondary/clang/lib/Lex/BUILD.gn | 1 +
 1 file changed, 1 insertion(+)

diff --git a/llvm/utils/gn/secondary/clang/lib/Lex/BUILD.gn b/llvm/utils/gn/secondary/clang/lib/Lex/BUILD.gn
index 04e218b6802df..e2ed4fc45a88a 100644
--- a/llvm/utils/gn/secondary/clang/lib/Lex/BUILD.gn
+++ b/llvm/utils/gn/secondary/clang/lib/Lex/BUILD.gn
@@ -30,6 +30,7 @@ static_library("Lex") {
     "Preprocessor.cpp",
     "PreprocessorLexer.cpp",
     "ScratchBuffer.cpp",
+    "TextEncoding.cpp",
     "TokenConcatenation.cpp",
     "TokenLexer.cpp",
   ]