https://gcc.gnu.org/bugzilla/show_bug.cgi?id=119266
--- Comment #10 from Sam James <sjames at gcc dot gnu.org> --- OK, avoiding speculation and getting back to facts: ``` $ cat ./build/x86_64-pc-linux-gnu/libstdc++-v3/src/c++23/relpath.log called with '/usr/lib64' and '/usr/lib/gcc/x86_64-pc-linux-gnu/15/include/g++-v15/bits' -> called with '/usr/lib64' and '/usr/lib/gcc/x86_64-pc-linux-gnu/15/include/g++-v15/bits' ``` so toolexeclibdir is /usr/lib64 for me, and includebitsdir is /usr/lib/gcc/x86_64-pc-linux-gnu/15/include/g++-v15/bits.
