https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85574
--- Comment #41 from CVS Commits <cvs-commit at gcc dot gnu.org> --- The releases/gcc-9 branch has been updated by Eric Botcazou <ebotca...@gcc.gnu.org>: https://gcc.gnu.org/g:faed344ee5f17b9a19961b3b1f8ea0ed10db6f2d commit r9-9208-gfaed344ee5f17b9a19961b3b1f8ea0ed10db6f2d Author: Eric Botcazou <ebotca...@adacore.com> Date: Thu Jan 28 11:31:35 2021 +0100 Fix LTO bootstrap on Windows The latest fix introduced a comparison of executables and this cannot directly work on Windows because they are timestamped. Moreover nobody sets $(exeext) at top level, at least on MinGW, so you get weird behavior because some tools add the implicit .exe suffix and others do not. contrib/ PR lto/85574 * compare-lto: Deal with PE-COFF executables specifically.