Re: [PATCH v2 0/3] tools/gpio: switch to tools buildsystem

[Alexandre Courbot <gnurou@xxxxxxxxx>]

On Sun, Jun 19, 2016 at 12:24 AM, Andy Shevchenko
<andriy.shevchenko@xxxxxxxxxxxxxxx> wrote:
> Current environment is not allowed to easily build the tools.
> Move to tools buildsystem to allow user build gpio tools using only existing
> kernel sources. Besides that support O=/path/to/build/dir option.

Very good idea. I just have a few issues with the current patchset:

1) I think patch 1 and 2 should be merged, otherwise we would have one
commit where the GPIO tools are not available anymore
2) When trying to cross-compile the tools, I am hitting the following error:

  arm-linux-gnueabihf-gcc -Wp,-MD,./.lsgpio.o.d,-MT,lsgpio.o -O2 -Wall
-g -D_GNU_SOURCE -Iinclude -D"BUILD_STR(s)=#s"   -c -o lsgpio.o
lsgpio.c
  arm-linux-gnueabihf-gcc -Wp,-MD,./.gpio-utils.o.d,-MT,gpio-utils.o
-O2 -Wall -g -D_GNU_SOURCE -Iinclude -D"BUILD_STR(s)=#s"   -c -o
gpio-utils.o gpio-utils.c
   ld -r -o lsgpio-in.o  lsgpio.o gpio-utils.o
lsgpio.o: error adding symbols: File in wrong format

Looks like the host linker is invoked instead of the target one.
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