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SubjectRe: [BUG] perf cross-compile error dual to fixdep not host-exe
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hi, Jirka

On 2015/9/30 14:13, Jiri Olsa wrote:
> On Wed, Sep 30, 2015 at 11:18:20AM +0800, He Kuang wrote:
>> Hi,
>>
>> perf cross-compile error dual to fixdep is not a host executable, first bad commit
>> is 7c422f557266("tools build: Build fixdep helper from perf and basic libs")
>>
>> Cross-compiling an aarch64 target on x86_64 host, error like this:
>>
>> $ make ARCH=aarch64 O=xx/aarch64 CROSS_COMPILE=aarch64-linux-gnu
>> ...
>> make[3]: *** [xx/aarch64/parse-utils.o] Error 126
>> make[3]: *** Waiting for unfinished jobs....
>> /bin/sh: xx/aarch64//fixdep: cannot execute binary file
>>
>> $ uname -a
>> x86_64 x86_64 x86_64 GNU/Linux
>>
>> $ file xx/aarch64//fixdep
>> xx/aarch64//fixdep : ELF 64-bit LSB executable, ARM aarch64, version 1
>> (SYSV), dynamically linked, interpreter /lib/ld-linux-aarch64.so.1, for
>> GNU/Linux 3.7.0, not stripped
>
> hum, we need fixdep to stay the host arch.. I should have seen it :-\
> could you please check attached patch?
>
> thanks,
> jirka
>

It does not work, 'fixdep' still be compiled as target executable.

Thank you.

>
> ---
> diff --git a/tools/build/Makefile b/tools/build/Makefile
> index a93036272d43..648897694992 100644
> --- a/tools/build/Makefile
> +++ b/tools/build/Makefile
> @@ -5,15 +5,6 @@ endif
>
> include $(srctree)/tools//scripts/Makefile.include
>
> -define allow-override
> - $(if $(or $(findstring environment,$(origin $(1))),\
> - $(findstring command line,$(origin $(1)))),,\
> - $(eval $(1) = $(2)))
> -endef
> -
> -$(call allow-override,CC,$(CROSS_COMPILE)gcc)
> -$(call allow-override,LD,$(CROSS_COMPILE)ld)
> -
> ifeq ($(V),1)
> Q =
> else
>



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