[llvm] [openmp] [Flang-RT] Fix GCC 15.1 Fortran Runtime libstdc++ Undefined Symbols (PR #157385)

[Patrick Simmons via llvm-commits]

linuxrocks123 wrote:

@Meinersbur I agree that these are all better solutions.  I will implement (3) since it is least invasive.  Note that we'll have to define it in the source code of the runtime rather than on the command line as we do with the other symbols.  Any header file included across the entire runtime should do; I'll find an appropriate one.

It wouldn't hurt to pursue (2) as a longer-term solution if you think GCC will be willing to make that change for us.  It would probably be best for someone who has worked with the GCC team in the past to file that issue with them if any such person is available.

https://github.com/llvm/llvm-project/pull/157385