gcc-8-20180225: "go" breaks building OpenMP

[Siegmar Gross]

Hi Thomas,

thank you very much for your help. That's exactly what I wanted.
I tried again and was successful.


Kind regards

Siegmar


Am 09.03.2018 um 17:59 schrieb Thomas Schwinge:
> Hi!
> 
> On Fri, 9 Mar 2018 17:15:16 +0100, Siegmar Gross <siegmar.gross@informatik.hs-fulda.de> wrote:
>> [...]
>> configure: error: "libffi has not been ported to nvptx-unknown-none."
>> [...]
> 
> Right, such things are not supported for a "--target=nvptx" compiler.
> 
> But, if your desire is to just enable additional languages, without
> offloading support for them (which doesn't exist, as discussed in my
> other email), then the solution is to just specify them in
> "--enable-languages" for your "gcc-8.0.0_host_build" (host compiler) but
> not for your "gcc-8.0.0_build" (nvptx offloading compiler), keeping the
> latter at "--enable-languages=c,c++,fortran,lto".
> 
> Specifically:
> 
>>>> I used the following commands to build everything.
>>>>
>>>> setenv LD_LIBRARY_PATH ${LD_LIBRARY_PATH}:/usr/local/cuda/lib64
>>>> setenv CUDA_INC_PATH /usr/local/cuda/include
>>>> setenv CUDA_LIB_PATH /usr/local/cuda/lib64
>>>> set path = ( ${path} /usr/local/cuda/bin )
>>>>
>>>> mkdir make_nvptx-tools
>>>> cd make_nvptx-tools
>>>> ../nvptx-tools/configure --prefix=/usr/local/gcc-8.0.0 \
>>>>     |& tee log.configure
>>>> make |& tee log.make
>>>> make install |& tee log.make-install
>>>> cd ..
>>>>
>>>> mkdir gcc-8.0.0_build
>>>> cd gcc-8.0.0_build
>>>> ../gcc-8.0.0/configure --prefix=/usr/local/gcc-8.0.0 \
>>>>     --target=nvptx-none \
>>>>     --enable-as-accelerator-for=x86_64-pc-linux-gnu \
>>>>     --with-build-time-tools=/usr/local/gcc-8.0.0/nvptx-none/bin \
>>>>     --disable-sjlj-exceptions \
>>>>     --with-newlib \
>>>>     --enable-newlib-io-long-long \
>>>>     --enable-languages=c,c++,objc,obj-c++,fortran,go,lto \
> 
> Continue to use "--enable-languages=c,c++,fortran,lto" here.
> 
>>>>     |& tee log.configure
>>>> make -j 6 |& tee log.make
>>>> make -j 6 install |& tee log.make-install
>>>>
>>>> mkdir ../gcc-8.0.0_host_build
>>>> cd ../gcc-8.0.0_host_build
>>>> ../gcc-8.0.0/configure --prefix=/usr/local/gcc-8.0.0 \
>>>>     --build=x86_64-pc-linux-gnu \
>>>>     --host=x86_64-pc-linux-gnu \
>>>>     --target=x86_64-pc-linux-gnu \
>>>>     --enable-offload-targets=nvptx-none=/usr/local/gcc-8.0.0/bin \
>>>>     --with-cuda-driver=/usr/local/cuda/ \
>>>>     --enable-languages=c,c++,objc,obj-c++,fortran,go,lto \
> 
> That should work fine.
> 
>>>>     --enable-nls \
>>>>     --enable-threads=posix \
>>>>     --with-gmp-lib=/usr/local/lib64 \
>>>>     --with-gmp-include=/usr/local/include \
>>>>     --with-mpfr-lib=/usr/local/lib64 \
>>>>     --with-mpfr-include=/usr/local/include \
>>>>     --with-mpc-lib=/usr/local/lib64 \
>>>>     --with-mpc-include=/usr/local/include \
>>>>     --with-isl-lib=/usr/local/lib64 \
>>>>     --with-isl-include=/usr/local/include \
>>>>     |& tee log.configure
>>>> make -j 6 |& tee log.make
>>>> make -j 6 install |& tee log.make-install
> 
> 
> Grüße
>   Thomas