Hi! I'm doing the port of kbuild 2.5 for the arch/s390 and ach/s390x. I already have a working (mostly, it's currently against our internal tree only) patch, but still have a few questions/problems:
1. My vmlinux.lds.i depends on a config symbol (CONFIG_SHARED_KERNEL), so I #included config.h and used #ifdef in a few places. However, the dependency on the configuration does not work unless I give the explicit rule $(objfile vmlinux.lds.i): $(objfile /include/linux/autoconf.h) in my Makefile.in. That does not look clean, is there a better way to do it? 2. There seems to be a bug when changing the target architechture without changing the object tree as well. For example: export KBUILD_OBJTREE=/tmp/kbuildtest mkdir $KBUILD_OBJTREE cd $KBUILD_SRCTREE_000 make ARCH=s390 CROSS_COMPILE=$ARCH-linux- oldconfig make ARCH=s390 CROSS_COMPILE=$ARCH-linux- (building correct tree...) make ARCH=s390x CROSS_COMPILE=$ARCH-linux- oldconfig make ARCH=s390x CROSS_COMPILE=$ARCH-linux- (...) phase 3 (evaluate selections) phase 4 (write global makefile) pp_makefile4: Cannot find object for target /arch/s390/asm-offsets.s pp_makefile4: Cannot find object for target /arch/s390/vmlinux.lds.i After this, the objtree is completely broken and I am unable to build anything for either architecture any more until I do 'rm -rf $KBUILD_OBJTREE'. Even 'make clean' is not enough. The arch specific files simply seem to add up e.g. after an attempted build for s390x and i386, building for s390 will already miss four files (arch/i386/boot/compressed/piggy.o, /arch/s390x/vmlinux.lds.i, /arch/i386/vmlinux.lds.i and /arch/s390x/asm-offsets.s). 3. In /drivers/s390, all object files are selected only when $(ARCH)=s390 is set. However, they should also be selected for $(ARCH)=s390x. In my patch, I have replaced the ifeq(ARCH) with conditionals on CONFIG_ARCH_S390, which is defined for both s390 and s390x and this works fine. Is this the preferred way to do it in this case or should I rather use some more complex conditional to test for either arch? _______________________________________________ kbuild-devel mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/kbuild-devel
