[cfe-dev] Clang LLVM for PPC. Clang unable to find PowerPC gcc toochain and binutils

[Hubert Tong via cfe-dev]

On Mon, Jan 27, 2020 at 4:39 AM vsp 1729 via cfe-dev <cfe-dev at lists.llvm.org>
wrote:

> Hi all
>
> I am building Clang/LLVM for PowerPC processor. The cmake command i'm
> using is:
>
> cmake -DCMAKE_BUILD_TYPE=RelWithDebInfo -DCMAKE_INSTALL_PREFIX=/usr/llvm6
> -DCMAKE_CROSSCOMPILING=True -DLLVM_DEFAULT_TARGET_TRIPLE=powerpc-linux-gnu
> -DLLVM_TARGET_ARCH=PowerPC -DLLVM_TARGETS_TO_BUILD=PowerPC ../llvm-6.0.0.src
>
> PowerPC gcc toolchain along with binutils are installed in
> /usr/powerpc-eabi directory.
>
> My questions are:
> 1. How to tell LLVM about gcc toolchain and binutils installation
> directory? Do we have to change/modify/add the path of gcc toolchain in
> llvm-6.0.0.src/tools/clang/lib/Driver directory files?
>
There's an option --gcc-toolchain=.


>
> 2. LLVM is successfully built using above cmake. I'm not able to use
> --sysroot=/usr/powerpc-eabi. In fact it is ineffective.
>
> Please help.
>
> Rgs,
> VSP
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