https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78050
Bug ID: 78050 Summary: Missing define for cross *-mingw32* Product: gcc Version: 7.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: libstdc++ Assignee: unassigned at gcc dot gnu.org Reporter: lukeallardyce at gmail dot com Target Milestone: --- Created attachment 39849 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=39849&action=edit crossconfig patch Cross compiling for mingw required an extra define for the new overaligned support, patch attached.