On 07/13/2018 04:41 AM, Mathieu Malaterre wrote:

Randy,

On Mon, Jul 9, 2018 at 2:00 PM Mathieu Malaterre [off-list ref] wrote:

quoted

On Sun, Jul 8, 2018 at 1:53 PM Michael Ellerman [off-list ref] wrote:

quoted

Randy Dunlap [off-list ref] writes:

quoted

Hi,

Is there a good way (or a shortcut) to do something like:

The best I know of is:

quoted

$ 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.


-- 
~Randy