Re: Unikraft stock project helloworld-cpp not compiling

["Jung, Alexander" <a.jung@xxxxxxxxxxxxxxx>]

Hi Malte,

Apologies for the delayed response!

I just tried this slightly verbose method myself:

```bash
$ pip3 install 
git+https://github.com/unikraft/kraft.git@99cdb90d76c73c74b3b66995ca64a8aad49e6b58
$ mkdir app-cpp
$ cd app-cpp
$ kraft init -a helloworld-cpp app-cpp
$ kraft configure -m x86_64 -p kvm
$ kraft build
```

And was able to re-create the same problem.  Looks like the configuration was 
set to Xen and not KVM.  There is a quick fix for this and that it is to delete 
the local `.config` and remove `xen: true` and `linuxu: true` from the 
kraft.yaml file. 

I'll have a look at why kraft is forcing a Xen configuration over a KVM 
selection and push an update as this should not be the default functionality.

However, when I force the change to KVM, it still get this error.  I am cc'ing 
Simon to have a look at this too.

Cheers,

Alexander

On 20.05.20, 18:15, "Minios-devel on behalf of Malte Münch" 
<minios-devel-bounces@xxxxxxxxxxxxxxxxxxxx on behalf of mamu@xxxxxxxxxxxxx> 
wrote:

Hello Unikraft-devs,

i am not able to compile the current 0.4 Verion of Unikraft with the
Hello-World example written in C++. Here is what i tried:

kraft up -m x86_64 -p kvm helloworld-cpp

The process crashes with the following error:

In file included from
/home/pg635/helloworldcpp/build/libcxx/origin/libcxx-7.0.0.src/include/iosfwd:90,
                 from
/home/pg635/helloworldcpp/build/libcxx/origin/libcxx-7.0.0.src/include/ios:215,
                 from
/home/pg635/helloworldcpp/build/libcxx/origin/libcxx-7.0.0.src/include/iostream:38,
                 from /home/pg635/helloworldcpp/helloworld.cpp:1:
/home/pg635/helloworldcpp/build/libcxx/origin/libcxx-7.0.0.src/include/wchar.h:119:15:
fatal error: wchar.h: no such file or directory
 #include_next <wchar.h>
               ^~~~~~~~~

kraft itself works and i am able to compile and run the Helloworld
application written in C.

Looking forward to your replies.

Best
Malte