[llvm-branch-commits] [clang] [flang] [lld] [llvm] [Flang] LLVM_ENABLE_RUNTIMES=flang-rt (PR #110217)

[Michael Kruse via llvm-branch-commits]

Meinersbur wrote:

> We should do `check_cxx_compiler_flag(-nostdlib++ FLANG_RT_HAS_NOSTDLIBPP)`, it's a lot more obvious when your program doesn't link than when a test fails (but the test is still good).

`-nostdlib++` has no influence on `libflang_rt.a` which is created by `ar`, not the linker. The unittests do require the C++ runtime library due to transitive dependency through GTest / LLVMSupport. The `flang(-new)` driver will never add lib(std)c++ linker flags, and test using the driver are in `flang/`.

https://github.com/llvm/llvm-project/pull/110217