From c8c11fb35de9da9e1652ee00f9385c6a7935479c Mon Sep 17 00:00:00 2001
From: Cameron Angus <cjangus@gmail.com>
Date: Tue, 23 Jul 2024 20:31:31 +0100
Subject: [PATCH] Wrap private module fragment content within conditional
 extern "C++", to match declarations.

---
 src/fmt.cc | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/src/fmt.cc b/src/fmt.cc
index fb514ad761fc..0a838bb1bf7b 100644
--- a/src/fmt.cc
+++ b/src/fmt.cc
@@ -127,9 +127,17 @@ extern "C++" {
 module :private;
 #endif
 
+#ifdef FMT_ATTACH_TO_GLOBAL_MODULE
+extern "C++" {
+#endif
+
 #if FMT_HAS_INCLUDE("format.cc")
 #  include "format.cc"
 #endif
 #if FMT_OS && FMT_HAS_INCLUDE("os.cc")
 #  include "os.cc"
 #endif
+
+#ifdef FMT_ATTACH_TO_GLOBAL_MODULE
+}
+#endif