About _GLIBCXX_USE_CXX11_ABI

Usage
1

We are developping plugins for applications that just recently switch to the new C++ ABI on linux (Dual ABI)
So here is my problem. I need to compile my plugins with
–for the new ABI
target_compile_definitions(${target_name} PUBLIC _GLIBCXX_USE_CXX11_ABI=1)
–for the old ABI
target_compile_definitions(${target_name} PUBLIC _GLIBCXX_USE_CXX11_ABI=0)

Thta works great until we start using external libraries. If in understood well the external libraries also need to be compiled with the same value of _GLIBCXX_USE_CXX11_ABI.

Now we use find_package for all library dependencies. However i dont see any parameters that would allow me to ask find_package to find with _GLIBCXX_USE_CXX11_ABI enabled or disables.

I can always create my own findXXX.cmake files to make it happen but i was wondering if there was a standard way of getting the right library.

Thank you in advance for you help.

1 Like
2

We couldn’t find a built-in solution to handle this gracefully either. However, we currently use a workaround: we have two sets of library root paths (with and without the new ABI) in two separate files. In CMake, we simply include the appropriate one for each build type.

3

That is actually what we do within some findXXX.cmake to avoid making it hapen in each project. i glad i m not the only one having this issue.

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