[U-Boot] U-Boot: could not cross-compile u-boot tools

[Masahiro Yamada <yamada.m@jp.panasonic.com>]

Hello Heiko,

> >> Is this a Bug, which should be fixed? Any hints?
> >
> > It seems like we need to pick up
> > http://lists.linaro.org/pipermail/linaro-kernel/2013-August/005772.html
> 
> Yes, this seems a way to go...
> 
> @Masahiro: What is your opinion?

Hmm, I don't like such a patch because
 [1] It changes too much
 [2] We must build tools in two steps.
    First time, build tools for host
          make O=path/to/buildhost/ silentoldconfig prepare scripts
    Second time, built tools for the target 
     make HOSTCC=$CROSS_COMPILE \
           KBUILD_SCRIPTROOT=path/to/buildhost/
            silentoldconfig prepare scripts
   It seems ridiculous to type so many magic commands.



Heiko, can you check if the following works for you?


Modify tools/Makefile as follows

  --- a/tools/Makefile
  +++ b/tools/Makefile
  @@ -5,6 +5,10 @@
   # SPDX-License-Identifier:     GPL-2.0+
   #
    
   +ifneq ($(CROSS_BUILD_TOOLS),)
   +HOSTCC = $(CC)
   +endif
   +
    #
    # toolchains targeting win32 generate .exe files
    #


Usage:
Build tools for host
     make  CROSS_COMPILE=<your_gcc_prefix> tools
Build tools for target
     make CROSS_BUILD_TOOLS=1  CROSS_COMPILE=<your_gcc_prefix> tools


This is my log.

$ make IDS8247_config
Configuring for IDS8247 board...
$ make CROSS_COMPILE=powerpc-linux-gnu- CROSS_BUILD_TOOLS=1 tools
  GEN     include/autoconf.mk.dep
  GEN     include/autoconf.mk
  CHK     include/config/uboot.release
  UPD     include/config/uboot.release
  CHK     include/generated/version_autogenerated.h
  UPD     include/generated/version_autogenerated.h
  CHK     include/generated/timestamp_autogenerated.h
  UPD     include/generated/timestamp_autogenerated.h
  HOSTCC  scripts/basic/fixdep
  CC      lib/asm-offsets.s
  GEN     include/generated/generic-asm-offsets.h
  HOSTCC  tools/aisimage.o
  HOSTCC  tools/crc32.o
  HOSTCC  tools/default_image.o
  HOSTCC  tools/dumpimage.o
  HOSTCC  tools/env_embedded.o
  HOSTCC  tools/envcrc.o
  HOSTCC  tools/fdt.o
  HOSTCC  tools/fdt_ro.o
  HOSTCC  tools/fdt_rw.o
  HOSTCC  tools/fdt_strerror.o
  HOSTCC  tools/fdt_wip.o
  HOSTCC  tools/fit_image.o
  HOSTCC  tools/image-fit.o
  HOSTCC  tools/image-host.o
  HOSTCC  tools/image.o
  HOSTCC  tools/imagetool.o
  HOSTCC  tools/imximage.o
  HOSTCC  tools/kwbimage.o
  HOSTCC  tools/md5.o
  HOSTCC  tools/mkenvimage.o
  HOSTCC  tools/mkimage.o
  HOSTCC  tools/mxsimage.o
  HOSTCC  tools/omapimage.o
  HOSTCC  tools/os_support.o
  HOSTCC  tools/pblimage.o
  HOSTCC  tools/sha1.o
  HOSTCC  tools/ublimage.o
  HOSTLD  tools/envcrc
  HOSTCC  tools/gen_eth_addr
  HOSTCC  tools/img2srec
  HOSTLD  tools/mkenvimage
  HOSTLD  tools/dumpimage
  HOSTLD  tools/mkimage
  HOSTCC  tools/proftool
$ file tools/mkimage
tools/mkimage: ELF 32-bit MSB executable, PowerPC or cisco 4500, version 1 (SYSV), dynamically linked (uses shared libs), for GNU/Linux 2.6.32, BuildID[sha1]=0xb76ad5a10a41700fcab9e86c079118c424446d89, with unknown capability 0x41000000 = 0xf676e75, with unknown capability 0x10000 = 0x70401, not stripped



Uknown Issue:
Tools are not stripped.
Too big for your target board?


Best Regards
Masahiro Yamada