On 07/13/2018 04:24 PM, Randy Dunlap wrote: > On 07/13/2018 04:41 AM, Mathieu Malaterre wrote: >> Randy, >> >> On Mon, Jul 9, 2018 at 2:00 PM Mathieu Malaterre <ma...@debian.org> wrote: >>> >>> On Sun, Jul 8, 2018 at 1:53 PM Michael Ellerman <m...@ellerman.id.au> wrote: >>>> >>>> Randy Dunlap <rdun...@infradead.org> writes: >>>>> Hi, >>>>> >>>>> Is there a good way (or a shortcut) to do something like: >>>> >>>> The best I know of is: >>>> >>>>> $ make ARCH=powerpc O=PPC32 [other_options] allmodconfig >>>>> to get a PPC32/32BIT allmodconfig >>>> >>>> $ echo CONFIG_PPC64=n > allmod.config >>>> $ KCONFIG_ALLCONFIG=1 make allmodconfig >>>> $ grep PPC32 .config >>>> CONFIG_PPC32=y >>>> >>>> Which is still a bit clunky. >>>> >>>> >>>> I looked at this a while back and the problem we have is that the 32-bit >>>> kernel is not a single thing. There are multiple 32-bit platforms which >>>> are mutually exclusive. >>>> >>>> eg, from menuconfig: >>>> >>>> - 512x/52xx/6xx/7xx/74xx/82xx/83xx/86xx >>>> - Freescale 85xx >>>> - Freescale 8xx >>>> - AMCC 40x >>>> - AMCC 44x, 46x or 47x >>>> - Freescale e200 >>> >>> Most Linux distro seems to have drop support for ppc32. So I'd suggest >>> to pick Debian powperc default config (but I agree that I am a little >>> biased here). >> >> I tried an allmode as suggest by Michael (above). But I get a build error: >> >> MODPOST vmlinux.o >> drivers/android/binder.o: In function `binder_thread_write': >> binder.c:(.text+0xc750): undefined reference to `__get_user_bad' >> binder.c:(.text+0xc76c): undefined reference to `__get_user_bad' >> binder.c:(.text+0xc790): undefined reference to `__get_user_bad' >> binder.c:(.text+0xc7d4): undefined reference to `__get_user_bad' >> binder.c:(.text+0xc7f4): undefined reference to `__get_user_bad' >> >> >> So for now I need to do: CONFIG_ANDROID_BINDER_IPC=n >> >> How did you get passed this build failure ? > > Hi, > > I am not seeing an error on that driver build. > > I am using gcc 8.1.0 from kernel.org: > https://mirrors.edge.kernel.org/pub/tools/crosstool/ > > and building on x86_64.
Hi Mathieu, I do see this build error (slightly different undefined reference though) when I do an arch/microblaze/ cross-build: drivers/android/binder.o: In function `binder_thread_write': drivers/android/.tmp_gl_binder.o:(.text+0xcba8): undefined reference to `__user_bad' drivers/android/.tmp_gl_binder.o:(.text+0xcbd4): undefined reference to `__user_bad' drivers/android/.tmp_gl_binder.o:(.text+0xcfbc): undefined reference to `__user_bad' drivers/android/.tmp_gl_binder.o:(.text+0xd648): undefined reference to `__user_bad' drivers/android/.tmp_gl_binder.o:(.text+0xdbc0): undefined reference to `__user_bad' -- ~Randy
