From d6481c2ed02b3dd07c3700b879c550145ead29d2 Mon Sep 17 00:00:00 2001
From: Zbigniew Herman <zbigniew.herman@tether.io>
Date: Tue, 19 May 2026 18:13:13 +0200
Subject: [PATCH] tts-cpp : add missing <atomic> include in chatterbox_tts.cpp
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g_s3gen_cache_refcount (line ~189) is declared as
`static std::atomic<int>` and is later used with `.fetch_add()`,
`.fetch_sub()`, `.store()`, but the translation unit only pulls in
ggml/cstring/stl headers — never `<atomic>` directly. libstdc++
happens to expose `std::atomic` transitively via `<mutex>` on most
hosts so the build appears clean, but on the ggml-speech sync path
where header transitivity changes (the qvac-ext-ggml@speech merge
of ggml-org v0.10.2 cuts a few of those transitive paths) the
translation unit fails with:

    chatterbox_tts.cpp:189: variable `std::atomic<int>
    g_s3gen_cache_refcount' has initializer but incomplete type

Reproduces on the pre-merge speech HEAD too -- it was previously
hidden by header transitivity. Add `#include <atomic>` explicitly.

Verified by a clean rebuild of tts-cpp against an `-DBUILD_SHARED_LIBS=ON`
install of qvac-ext-ggml@speech HEAD (45dbdecd, day-2 ggml-speech).

Co-authored-by: Cursor <cursoragent@cursor.com>
---
 tts-cpp/src/chatterbox_tts.cpp | 1 +
 1 file changed, 1 insertion(+)

diff --git a/tts-cpp/src/chatterbox_tts.cpp b/tts-cpp/src/chatterbox_tts.cpp
index edd762a7285..603cbc74f3f 100644
--- a/tts-cpp/src/chatterbox_tts.cpp
+++ b/tts-cpp/src/chatterbox_tts.cpp
@@ -43,6 +43,7 @@
 #endif
 
 #include <algorithm>
+#include <atomic>
 #include <chrono>
 #include <cmath>
 #include <cstdint>