linux-kernel - Re: [PATCH v3 0/8] Add objtool and orc support for LoongArch

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Date:   Fri, 20 Oct 2023 18:45:48 +0800
From:   Xi Ruoyao <xry111@...111.site>
To:     Tiezhu Yang <yangtiezhu@...ngson.cn>,
        Huacai Chen <chenhuacai@...nel.org>
Cc:     Josh Poimboeuf <jpoimboe@...nel.org>,
        Peter Zijlstra <peterz@...radead.org>,
        loongarch@...ts.linux.dev, linux-kernel@...r.kernel.org,
        loongson-kernel@...ts.loongnix.cn
Subject: Re: [PATCH v3 0/8] Add objtool and orc support for LoongArch

On Fri, 2023-10-20 at 18:28 +0800, Tiezhu Yang wrote:
> On 10/20/2023 04:51 PM, Huacai Chen wrote:
> > Cross compiling on X86 for LoongArch fails:
> > 
> >    CALL    scripts/checksyscalls.sh
> >    DESCEND objtool
> > make[5]: *** No rule to make target
> > '/usr/lib/gcc/x86_64-redhat-linux/8/include/stdbool.h', needed by
> > '/home/chenhuacai/linux-official.git/tools/objtool/libsubcmd/exec-cmd.o'.
> > Stop.
> > make[4]: *** [Makefile:80:
> > /home/chenhuacai/linux-official.git/tools/objtool/libsubcmd/libsubcmd-in.o]
> > Error 2
> > make[3]: *** [Makefile:82:
> > /home/chenhuacai/linux-official.git/tools/objtool/libsubcmd/libsubcmd.a]
> > Error 2
> > make[2]: *** [Makefile:73: objtool] Error 2
> > make[1]: *** [/home/chenhuacai/linux-official.git/Makefile:1355:
> > tools/objtool] Error 2
> > make: *** [Makefile:234: __sub-make] Error 2
> 
> It seems that there is no stdbool.h in your cross compile environment.
> 
> It works well with the following steps, you can try it.

/* snip */

> find /opt -name stdbool.h
> /opt/cross-tools/lib/gcc/loongarch64-unknown-linux-gnu/14.0.0/include/stdbool.h
> /opt/cross-tools/loongarch64-unknown-linux-gnu/include/c++/14.0.0/tr1/stdbool.h

The problem is HOSTCC cannot find stdbool.h, not (target) CC.  So these
two files are not relevant.

-- 
Xi Ruoyao <xry111@...111.site>
School of Aerospace Science and Technology, Xidian University