Update cpp/cmake_modules/ThirdpartyToolchain.cmake

Co-authored-by: Sutou Kouhei <[email protected]>
pitrou · Aug 15, 2024 · c0f4c8a · c0f4c8a
1 parent 88de487
commit c0f4c8a
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/cpp/cmake_modules/ThirdpartyToolchain.cmake b/cpp/cmake_modules/ThirdpartyToolchain.cmake
@@ -1363,7 +1363,7 @@ macro(build_snappy)
   # Snappy unconditionally disables RTTI, which is incompatible with some other
   # build settings (https://github.com/apache/arrow/issues/43688).
   if(NOT MSVC)
-    set(SNAPPY_ADDITIONAL_CXX_FLAGS "${SNAPPY_ADDITIONAL_CXX_FLAGS} -frtti")
+    string(APPEND SNAPPY_ADDITIONAL_CXX_FLAGS " -frtti")
   endif()
 
   if(NOT MSVC)