From 6affd51405942e59f0b4baa256e683972de3ef79 Mon Sep 17 00:00:00 2001
From: Christian Blichmann <cblichmann@users.noreply.github.com>
Date: Mon, 22 Aug 2022 22:51:28 +0200
Subject: [PATCH] Update abseil-cpp.cmake (#10436)

---
 cmake/abseil-cpp.cmake | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/cmake/abseil-cpp.cmake b/cmake/abseil-cpp.cmake
index 746673245c..94c25de863 100644
--- a/cmake/abseil-cpp.cmake
+++ b/cmake/abseil-cpp.cmake
@@ -2,7 +2,10 @@
 
 set(ABSL_PROPAGATE_CXX_STD ON)
 
-if(protobuf_ABSL_PROVIDER STREQUAL "module")
+if(TARGET absl::strings)
+  # If Abseil is included already, skip including it.
+  # (https://github.com/protocolbuffers/protobuf/issues/10435)
+elseif(protobuf_ABSL_PROVIDER STREQUAL "module")
   if(NOT ABSL_ROOT_DIR)
     set(ABSL_ROOT_DIR ${CMAKE_CURRENT_SOURCE_DIR}/third_party/abseil-cpp)
   endif()