Manish, On Wed, Aug 5, 2009 at 3:54 PM, Manish Katiyar<mkatiyar@xxxxxxxxx> wrote: > Hi, > > I am trying to compile a module on UML. The kernel with which I am > booting UML is my custom kernel built on i386 machine with the command > line as "make defconfig ARCH=um; make linux ARCH=um". After the kernel > boots up my uname shows something like below :- > > bash-3.2# uname -a > Linux localhost.localdomain 2.6.30.4 #6 Wed Aug 5 15:12:08 IST 2009 > i686 i686 i386 GNU/Linux > > Now when I compile a module, by default it resolves the ARCH to x86. > And some of the compilation fails because somethings are expected to > be always defined on x86 but not on UML (e.g. > CONFIG_TRACE_IRQFLAGS_SUPPORT). because my asm directory resolves to > asm-um rather than asm-x86. It throws error like below. > > In file included from include/linux/prefetch.h:14, > from include/linux/list.h:6, > from include/linux/wait.h:22, > from include/linux/fs.h:359, > from include/linux/buffer_head.h:11, > from /home/mkatiyar/personal/ohsm/test/kernel/admin.c:23: > /mnt/host/home/mkatiyar/personal/uml/linux-2.6.30.4/arch/x86/include/asm/processor.h: > In function 'load_cr3': > /mnt/host/home/mkatiyar/personal/uml/linux-2.6.30.4/arch/x86/include/asm/processor.h:191: > error: 'CONFIG_PAGE_OFFSETUL' undeclared (first use in this function) > /mnt/host/home/mkatiyar/personal/uml/linux-2.6.30.4/arch/x86/include/asm/processor.h:191: > error: (Each undeclared identifier is reported only once > /mnt/host/home/mkatiyar/personal/uml/linux-2.6.30.4/arch/x86/include/asm/processor.h:191: > error: for each function it appears in.) > /mnt/host/home/mkatiyar/personal/uml/linux-2.6.30.4/arch/x86/include/asm/processor.h: > In function 'wbinvd_halt': > /mnt/host/home/mkatiyar/personal/uml/linux-2.6.30.4/arch/x86/include/asm/processor.h:771: > error: implicit declaration of function 'halt' > > > My question is how do people build modules which are specific to a > particular architecture on UML ? Is it possible ? > > Once I export ARCH=um before doing a make, I can do a successful build. > I think its documented somewhere on the UML website that you have to provide ARCH=um for any compilation/build related things. > -- > Thanks - > Manish > > -- > To unsubscribe from this list: send an email with > "unsubscribe kernelnewbies" to ecartis@xxxxxxxxxxxx > Please read the FAQ at http://kernelnewbies.org/FAQ > > -- To unsubscribe from this list: send an email with "unsubscribe kernelnewbies" to ecartis@xxxxxxxxxxxx Please read the FAQ at http://kernelnewbies.org/FAQ
