[U-Boot] U-Boot: could not cross-compile u-boot tools
Heiko Schocher
hs at denx.de
Fri Feb 28 10:31:17 CET 2014
Hallo Masahiro,
Am 28.02.2014 10:03, schrieb Masahiro Yamada:
> 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
Ok, if there is an easier way, that would be great!
> [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=$CROSS_COMPILE \
> KBUILD_SCRIPTROOT=path/to/buildhost/
> silentoldconfig prepare scripts
> It seems ridiculous to type so many magic commands.
But it should be possible to compile the "tools" for the
target. If this a serperate build step, that is as it was
before the kbuild changes, so that should be no problem.
> Heiko, can you check if the following works for you?
>
>
> Modify tools/Makefile as follows
>
> --- a/tools/Makefile
> +++ b/tools/Makefile
> @@ -5,6 +5,10 @@
> # SPDX-License-Identifier: GPL-2.0+
> #
>
> +ifneq ($(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
Yep, works, great!
> This is my log.
>
> $ make IDS8247_config
[...]
> $ 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?
strip them would be nice ...
bye,
Heiko
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