From c057c8366f995d124aef76ba4c727a04db8133ed Mon Sep 17 00:00:00 2001
From: Gang Wu <ustcwg@gmail.com>
Date: Mon, 25 May 2026 16:27:45 +0800
Subject: [PATCH] AVRO-4264: [C++] Bump vendored fmt to 12.1.0

---
 lang/c++/CMakeLists.txt | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/lang/c++/CMakeLists.txt b/lang/c++/CMakeLists.txt
index 8fb643cd825..16d7a544b34 100644
--- a/lang/c++/CMakeLists.txt
+++ b/lang/c++/CMakeLists.txt
@@ -89,7 +89,7 @@ if (NOT fmt_FOUND)
     FetchContent_Declare(
             fmt
             GIT_REPOSITORY  https://github.com/fmtlib/fmt.git
-            GIT_TAG         10.2.1
+            GIT_TAG         12.1.0
             GIT_PROGRESS    TRUE
             USES_TERMINAL_DOWNLOAD TRUE
     )
@@ -153,6 +153,7 @@ function (setup_avro_lib target lib_type)
       $<BUILD_INTERFACE:ZLIB::ZLIB>
       $<BUILD_INTERFACE:$<TARGET_NAME_IF_EXISTS:Snappy::snappy>>
       $<$<BOOL:${zstd_FOUND}>:$<BUILD_INTERFACE:$<TARGET_NAME_IF_EXISTS:${ZSTD_TARGET}>>>
+      $<INSTALL_INTERFACE:fmt::fmt-header-only>
       $<INSTALL_INTERFACE:ZLIB::ZLIB>
       $<INSTALL_INTERFACE:$<TARGET_NAME_IF_EXISTS:Snappy::snappy>>
       $<$<BOOL:${zstd_FOUND}>:$<INSTALL_INTERFACE:$<TARGET_NAME_IF_EXISTS:${ZSTD_TARGET}>>>