[cfe-dev] Problem when using scan-build

[Laszlo Nagy via cfe-dev]

Hi again,

these information are still not enough to help you out. So, I only can
guess what you have or trying to achieve... As I suggested earlier, try to
compile your project with Clang as a first step. If you done that,
scan-build won't be an issue... As far as I can see, you have a
cross-compiler gcc and a native clang compiler. (Is this correct?) You
might want to look at these pages:
https://clang.llvm.org/docs/CrossCompilation.html
http://llvm.org/docs/HowToCrossCompileLLVM.html

Regards,
Laszlo

On Thu, Feb 23, 2017 at 2:51 PM, 逆水x轻风 <526642675 at qq.com> wrote:

> Thank you for answering my email. The cmd we use is "scan-build
> --use-analyzer=/home/clang/bin/clang --use-cc=/home/gcc/arm-none-eabi/bin/arm-none-eabi-gcc
> --analyzer-target=arm-linux-gnueabi make -s MMU=2 products_isp=hi6250 -j"
>
> The version of clang is 3.8.256229 and gcc is 4.7.1 and os is Ubuntu 12.04
> The error log of clang is :
> In file include from /usr/include/math.h/usr/
> include/bits/matchcalls.h:110:1 error expected identifier or "("
> ________________________________
> However, /usr/include/math.h is not the head file we need, we found
> /usr/include/ is the default include <...> path of clang. Actually, we need
> /home/gcc/arm-none-eabi/include/math.h , it's in the default include path
> of gcc(/home/gcc/arm-none-eabi/include/).
>
> So, how can we use the include path of gcc when run the scan-build cmd ?
> ---原始邮件---
> 发件人:"Artem Dergachev"<noqnoqneo at gmail.com>
> 发送时间:2017年2月20日 星期一 下午10:57
> 收件人:"Laszlo Nagy"<rizsotto.mailinglist at gmail.com>;"逆水x轻风"<526642675 at qq.com
> >
> 抄送:"cfe-dev"<cfe-dev at lists.llvm.org>
> 主题:Re: [cfe-dev] Problem when using scan-build
>
> The scan-build tool should be using the original compiler for compiling
> (transparently) and clang for analysis (inevitably). It means that both
> compilers need to compile the code independently (even though the clang
> instance that is used for analysis doesn't produce any binaries, all
> earlier phases of compilation need to occur), which means they need to
> find all includes. It also means that if a certain translation unit
> cannot be compiled with clang (with relevantly interposed compilation
> flags), it cannot be analyzed.
> So i'd second the question regarding which includes you're having
> problems with.
> On 2/20/17 1:04 PM, Laszlo Nagy via cfe-dev wrote:
> > This question is related little to scan-build. scan-build calls clang,
> > so if you know how to compile your code with clang and use gcc
> > specific header files, then you got the answer... You shall know,
> > there are compiler specific header files, which you won't be able to
> > interchange between compilers. Please be more specific with your
> > question which header files you wish to be used. And also, in order to
> > get help, you need to tell more about your setup. (what os? what
> > version of gcc? which clang version? how clang got compiled? etc..)
> >
> > On Mon, Feb 20, 2017 at 6:19 PM, 逆水x轻风 via cfe-dev
> > <cfe-dev at lists.llvm.org <mailto:cfe-dev at lists.llvm.org>> wrote:
> >
> >     With --use-c=gcc and --use-analyzer=clang when run "scan-build" it
> >     will use include<...> of clang , but we need include<...> of gcc.
> >     How can I define the default include path of gcc when I run
> >     "scan-build --use-c=gcc --use-analyzer=clang make" ?
> >     _______________________________________________
> >     cfe-dev mailing list
> >     cfe-dev at lists.llvm.org <mailto:cfe-dev at lists.llvm.org>
> >     http://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-dev
> >     <http://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-dev>
> >
> >
> >
> >
> > _______________________________________________
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> > cfe-dev at lists.llvm.org
> > http://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-dev
>
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