To bootstrap with LTO enabled and -fuse-linker-plugin we need the path to the linker plugin passed to the driver for stages 2 and 3.
Manually adding a -B to BOOT_CFLAGS seems to work. -- Summary: bootstrap should pass -B prev-lto-plugin/.libs Product: gcc Version: 4.6.0 Status: UNCONFIRMED Keywords: build Severity: enhancement Priority: P3 Component: bootstrap AssignedTo: unassigned at gcc dot gnu dot org ReportedBy: rguenth at gcc dot gnu dot org http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44231