how to fix link undefined references abseil?

[imradzi]

Hi,

I'm using C++20 and having problem linking to oauth2:

curl_rest_client.cc:(.text+0x379): undefined reference to `absl::lts_20230802::StrCat[abi:cxx11](absl::lts_20230802::AlphaNum const&, absl::lts_20230802::AlphaNum const&)'

how do i fix this? thanks.

[coryan]

how do i fix this?

It depends. We need a few more details to help:

• Can you give us some general information about your environment?
  • Platform? (Linux, macOS, Windows)
  • Can you tell us something about the compiler you are using? (GCC, Clang, MSVC)
  • Can you tell us what version?
• What build system are you using to build google-cloud-cpp? (CMake, Bazel)
• How did you compile and install Abseil? (package manager? manually?)
• How did you compile and install google-cloud-cpp? (package manager? manually? did you use the /doc/packaging.md instructions?)
• What build system are you using to build your application?
• How do you link google-cloud-cpp?
  • Did you use a CMake target like google-cloud-cpp::storage?
  • Did you use a Bazel target?
  • Did you use pkg-config and something like $(pkg-config -libs google_cloud_cpp_storage)?
  • Did you manually create the list of -l flags?

Depending on your answers the solution might be:

• Use the targets such as google-cloud-cpp::storage for CMake or //:storage for Bazel instead of manually listing -l flags.
• With older versions of Abseil, you must make sure you use a consistent or at least compatible set of flags when compiling Abseil and downstream dependencies.
• There is a bug in the build scripts for google-cloud-cpp.

[coryan]

Did we answer your question? Are you able to successfully link the library?

[lucas-0liveira]

Hi,

It seems like you're encountering an issue with linking to the absl::lts_20230802::StrCat function in your C++20 code. This might be related to a missing or incorrect library or header file.

Make sure you have included the necessary library or header file for absl::lts_20230802::StrCat. This might be an ABSL library or a specific header file.

[coryan]

This looks like a LLM-generated answer. It adds no value over what can be found with a google search. I think we will start treating such answers as spam.