From cef9b536f9b4c711db6172cbae33d24cd105dd03 Mon Sep 17 00:00:00 2001
From: Sutou Kouhei <kou@clear-code.com>
Date: Tue, 10 Dec 2024 06:41:09 +0900
Subject: [PATCH] GH-44982: [C++] Add support for building system OpenTelemetry

---
 cpp/cmake_modules/ThirdpartyToolchain.cmake | 1 -
 1 file changed, 1 deletion(-)

diff --git a/cpp/cmake_modules/ThirdpartyToolchain.cmake b/cpp/cmake_modules/ThirdpartyToolchain.cmake
index a7d509de10ef1..1a691d26c11f8 100644
--- a/cpp/cmake_modules/ThirdpartyToolchain.cmake
+++ b/cpp/cmake_modules/ThirdpartyToolchain.cmake
@@ -4971,7 +4971,6 @@ if(ARROW_WITH_OPENTELEMETRY)
   # cURL is required whether we build from source or use an existing installation
   # (OTel's cmake files do not call find_curl for you)
   find_curl()
-  set(opentelemetry-cpp_SOURCE "AUTO")
   resolve_dependency(opentelemetry-cpp)
   set(ARROW_OPENTELEMETRY_LIBS
       opentelemetry-cpp::trace