Hi, I'm seeing a failure building ISL using uclibc-ng and GCC 13.2 [ALL ] /home/ctng/x-tools/x86_64-multilib-linux-uclibc/lib/gcc/x86_64-multilib-linux-uclibc/13.2.0/../../../../x86_64-multilib-linux-uclibc/bin/ld.bfd: isl_test2.o: non-canonical reference to canonical protected function `__pthread_key_create' in /home/ctng/x-tools/x86_64-multilib-linux-uclibc/x86_64-multilib-linux-uclibc/sysroot/lib64/libc.so.1 [ALL ] /home/ctng/x-tools/x86_64-multilib-linux-uclibc/lib/gcc/x86_64-multilib-linux-uclibc/13.2.0/../../../../x86_64-multilib-linux-uclibc/bin/ld.bfd: failed to set dynamic section sizes: bad value I don't really understand all the ins and outs but it looks like some libstdc++ APIs used by ISLs test code boils down to a call to __pthread_key_create which is marked protected so ld complains. I can successfully build the same code with glibc (haven't tried musl). So I'm reaching out to uclibc-ng rather than binutils or GCC. Any thoughts on what might be the problem and what the solution might be?