[U-Boot] [PATCH] Revert "build: Always build the libfdt python module"

[Tom Rini]

On Mon, Jan 23, 2017 at 01:56:25PM +0100, Emmanuel Vadot wrote:
> 
>  Hi Simon,
> 
> On Mon, 23 Jan 2017 05:37:50 -0700
> Simon Glass <sjg at chromium.org> wrote:
> 
> > This appears to cause problems with powerpc:
> > 
> > +x86_64-linux-gnu-gcc: error: unrecognized command line option ?-melf32ppclinux?
> > +error: command 'x86_64-linux-gnu-gcc' failed with exit status 1
> > +make[2]: *** [tools/_libfdt.so] Error 1
> > +make[1]: *** [tools] Error 2
> > +make: *** [sub-make] Error 2
> 
>  Why does your hostcc have this cflags ?

Looking into this, because it's python doing the building here:
swig -python -o tools/libfdt_wrap.c ../lib/libfdt/libfdt.swig                           python ../lib/libfdt/setup.py "-Wall -Wstrict-prototypes -O2 -fomit-frame-pointer    -include ../include/libfdt_env.h -idirafterinclude -idirafter../include -idirafter../arch/powerpc/include -I../lib/libfdt -I../tools -DCONFIG_SYS_TEXT_BASE=0xFC000000 -DUSE_HOSTCC -D__KERNEL_STRICT_NAMES -D_GNU_SOURCE " ../lib/libfdt/fdt.c ../lib/libfdt/fdt_ro.c ../lib/libfdt/fdt_rw.c ../lib/libfdt/fdt_strerror.c ../lib/libfdt/fdt_wip.c ../lib/libfdt/fdt_region.c ../lib/libfdt/fdt_sw.c tools/libfdt_wrap.c
gcc-4.8.real: error: unrecognized command line option ‘-melf32ppclinux’

I suspect that what's going on is that python is seeing LDFLAGS being
set to $(PLATFORM_LDFLAGS) and passing that along.  ARM (and sandbox) do
not set PLATFORM_LDFLAGS so don't run into this problem.

-- 
Tom
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