On Fri, 23 Mar 2007 23:31:57 -0400, Kumba <kumba@xxxxxxxxxx> wrote: > Well, o64 went away as we all know. It was never a favourable > option for very good reasons (although I used it right up until it > died and I was forced off of it). The replacement for it, that was > more preferred and resulted in similar code was building a kernel > for any of these three systems using CONFIG_BUILD_ELF64 + -msym32 > (auto selected in the Makefile) + the make vmlinux.32 target. I > believe this method is what Debian uses for building their mips > kernels for SGI systems, but don't quote me on that. If someone > from Debian wants to comment, please do. The replacement is CONFIG_BUILD_ELF64=n (it adds -msym32 option) + CONFIG_BOOT_ELF32=y (it adds vmlinux.32 to "all" target). Not CONFIG_BUILD_ELF64=y. CONFIG_BUILD_ELF64=n enables -msym32 option, which means the kernel load address should be CKSEG0. And if the kernel load address was CKSEG0, -msym32 make the kernel smaller and faster so it is absolutely preferred. CONFIG_BOOT_ELF32=y enables objcopying vmlinux to vmlinux.32. --- Atsushi Nemoto
