[llvm-dev] LLVM cross compilation for arm target

[James Molloy via llvm-dev]

Hi Bala,

Without more information it'll be difficult to debug. What I would do is
look at the CMake error log file. That will tell you the exact program it
tried to run to determine if the host compiler could find libstdc++, and
the  error it got. From there, it should be easier to determine what the
actual problem was.

Cheers,

James

On Thu, 5 May 2016 at 11:20 Balasaheb Dabhade via llvm-dev <
llvm-dev at lists.llvm.org> wrote:

> Hello All,
>
> I am building llvm-clang tool chain for *arm target* by following the
> steps from
> http://clang.llvm.org/docs/CrossCompilation.html
>
> *However when I tried following cmake command for build tool chain it
> gives the error message :*
>
> #CC='clang' CXX='clang++' cmake -G Ninja /home/iiita/llvm-exp/llvm
> -DCMAKE_CROSSCOMPILING=True
> -DCMAKE_INSTALL_PREFIX=/home/iiita/llvm-exp/llvm/build
> -DLLVM_TABLEGEN=/usr/bin/host/llvm-tblgen
> -DCLANG_TABLEGEN=/usr/bin/host/clang-tblgen
> -DLLVM_DEFAULT_TARGET_TRIPLE=arm-linux-gnueabihf -DLLVM_TARGET_ARCH=ARM
> -DLLVM_TARGETS_TO_BUILD=ARM -DCMAKE_CXX_FLAGS='-target
> armv7a-linux-gnueabihf -mcpu=cortex-a9
> -I/usr/arm-linux-gnueabihf/include/c++/4.7.1/arm-linux-gnueabihf/
> -I/usr/arm-linux-gnueabihf/include/ -mfloat-abi=hard -ccc-gcc-name
> arm-linux-gnueabihf-gcc'
>
>
> *error :*
>
> CMake Error at cmake/modules/CheckCompilerVersion.cmake:38 (message):
>   Host Clang must be able to find libstdc++4.7 or newer!
> Call Stack (most recent call first):
>   cmake/config-ix.cmake:14 (include)
>   CMakeLists.txt:412 (include)
>
> I have installed libstdc++4.7-dev library but still same issue is coming.
>
> Does anyone know how to resolve this issue?
>
> Thanks,
> Bala
>
>
> _______________________________________________
> LLVM Developers mailing list
> llvm-dev at lists.llvm.org
> http://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-dev
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.llvm.org/pipermail/llvm-dev/attachments/20160505/74749b65/attachment-0001.html>