https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100293
--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> --- The log file contains: error reading R:\winlibs64_stage\_TMP_\ccYEwkZW.o collect2.exe: error: ld returned 1 exit status which I bet is the problem, but it is unclear if the _TMP_ subdir exists...