https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89044
--- Comment #3 from Jonathan Wakely <redi at gcc dot gnu.org> --- I don't understand how "gcc with multilib support for linux" can produce .dll files, so I don't understand what you're doing. Please provide the full configure command (which is shown in the output of 'gcc -v' which https://gcc.gnu.org/bugs asks you to provide). If you're cross-compiling, we need to know the build and host triplets as well as the target.