Hi Mohan. On Thu, Jul 10, 2008 at 12:01:38AM +0530, Mohan Kumar M wrote: > Hi, > > I am developing relocatable kernel for PPC64 and as part of it I need to > integrate the build process with the kernel build itself. As of now I am > using a separate makefile to build the relocatable kernel after building > the kernel. > > I have updated the Makefile(s) in arch/powerpc and arch/powerpc/boot to > build the relocatable kernel image as part of kernel build. > > With this approach I have two problems: > 1. I need to explicitly specify the relocatable vmlinux target to build > it. ie > make vmlinux.reloc Add the relevant target to the all: rule in arch/powerpc/Makefile # Default to zImage, override when needed all: zImage And include support for the target in same file. > 2. During build process, build is not able to build the > vmlinux.reloc.lds linker script from the vmlinux.reloc.lds.S source file. If you just add: extra-y += vmlinux.reloc.lds then it should happen automatically. ee how all archs does it in arch/$ARCH/kernel/Makefile for vmlinx.lds > I am attaching the separate makefile to build the relocatable vmlinux, > makefile diffs diff.Makefile (diff between original > arch/powerpc/Makefile and arch/powerpc/Makefile for relocatable > support), diff.Makefile.boot (diff between original > arch/powerpc/boot/Makefile and arch/powerpc/boot/Makefile for > relocatable support) I did not look at it this time - lacking time. But tr to provide a single unified diff next time - that i at least remotely readable. > Another feature I am looking is to generate the "relocatable vmlinux" > image in the top directory of kernel source and the intermediate vmlinux > file either in arch/powerpc/kernel or arch/powerpc/boot. We no longer build arch specific targets in the top-level directory of the kernel src. We print out where to locate the build file. See x86 as an example. > I have not subscribed to the kbuild mailing list, so please include me > in to/cc while replying to this thread. [We always do so here]. Sam -- To unsubscribe from this list: send the line "unsubscribe linux-kbuild" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
