From 20994c572c2ba63aeb0413618f7f4ed8745fe04b Mon Sep 17 00:00:00 2001
From: Antoine Pitrou <antoine@python.org>
Date: Thu, 15 Aug 2024 11:33:56 +0200
Subject: [PATCH] Avoid adding flags on Windows

---
 cpp/cmake_modules/ThirdpartyToolchain.cmake | 14 ++++++++------
 1 file changed, 8 insertions(+), 6 deletions(-)

diff --git a/cpp/cmake_modules/ThirdpartyToolchain.cmake b/cpp/cmake_modules/ThirdpartyToolchain.cmake
index c7f36ff055154..426d60eae4321 100644
--- a/cpp/cmake_modules/ThirdpartyToolchain.cmake
+++ b/cpp/cmake_modules/ThirdpartyToolchain.cmake
@@ -1366,12 +1366,14 @@ macro(build_snappy)
     set(SNAPPY_ADDITIONAL_CXX_FLAGS "${SNAPPY_ADDITIONAL_CXX_FLAGS} -frtti")
   endif()
 
-  foreach(CONFIG DEBUG MINSIZEREL RELEASE RELWITHDEBINFO)
-    list(APPEND
-         SNAPPY_CMAKE_ARGS
-         "-DCMAKE_CXX_FLAGS_${UPPERCASE_BUILD_TYPE}=${EP_CXX_FLAGS_${CONFIG}} ${SNAPPY_ADDITIONAL_CXX_FLAGS}"
-    )
-  endforeach()
+  if(NOT MSVC)
+    foreach(CONFIG DEBUG MINSIZEREL RELEASE RELWITHDEBINFO)
+      list(APPEND
+           SNAPPY_CMAKE_ARGS
+           "-DCMAKE_CXX_FLAGS_${UPPERCASE_BUILD_TYPE}=${EP_CXX_FLAGS_${CONFIG}} ${SNAPPY_ADDITIONAL_CXX_FLAGS}"
+      )
+    endforeach()
+  endif()
 
   if(APPLE AND CMAKE_HOST_SYSTEM_VERSION VERSION_LESS 20)
     # On macOS 10.13 we need to explicitly add <functional> to avoid a missing include error