[Bug libstdc++/66018] opendir configure test not working when GCC_NO_EXECUTABLES

[chrbr at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66018

--- Comment #3 from chrbr at gcc dot gnu.org ---
having ld in the $(prefix)/$(triplet)/bin fixes the issue.

it seems that collect2 doesn't look for $(prefix)/bin/$(triplet)-ld as before