> Is this because I manually changed BOOT_CFLAGS as passed to make? As previously said, you ought to avoid fiddling with BOOT_CFLAGS in any case. Configure --with-build-config=bootstrap-lto --with-fpmath=sse --with-arch=xxx and so on, and just type "make".
> And why it took so long? Probably because you're also fiddling with configure checking options. Avoid doing that if you aren't familiar with them. -- Eric Botcazou
