abseil-cpp, absl in thirdparty conflict with abseil-cpp, absl in unreal5 project

[kdongin]

i am trying to include protobuf lastest version 3.26.1 (ver 2024-04) in unreal 5. (i am using vs2022 community)

when i include protobuf using thirdparty abseil-cpp,
i face compile error C2373(redefinition). like below

---

Error C2373 'absl::container_internal::node_type': redefinition; different type modifiers TestProtoForUnreal C:\Users\blackstorm_kdongin\Documents\Unreal Projects\TestProtoForUnreal\Source\ThirdParty\abseilcpp\absl\container\internal\btree.h 1653

it seems that absl\container\internal\btree.h causes that error.
i assume that it conflicts with another absl\btree.h included unreal engine 5 some where.
i found out several same abseil in unreal engine 5.
could you fix or recommend a workaround????

[zhangskz]

Are the other absl's in your project imported under a different name than com_google_absl?

Protobuf pulls in an absl version automatically via protobuf_deps.bzl if one is not already found per

protobuf/protobuf_deps.bzl

Line 42 in 59d8afd

if not native.existing_rule("com_google_absl"):

Perhaps you may need to rename / upgrade your other installs to com_google_absl to avoid multiple absl's causing problems here?