# Build error on linux
**URL:** https://discourse.slicer.org/t/build-error-on-linux/1334
**Category:** Development
**Created:** [October 31, 2017, 4:11pm UTC](https://discourse.slicer.org/t/build-error-on-linux/1334 "2017-10-31T16:11:11Z")
**Posts on this page:** 5
**Page:** 1
### Author:  [@gcsharp](https://discourse.slicer.org/u/gcsharp)
#### Post date: [October 31, 2017, 4:11pm UTC](https://discourse.slicer.org/t/build-error-on-linux/1334/1 "2017-10-31T16:11:11Z")
Hi, I have a build failure on linux (debian stable, gcc 6.3.0).
Fresh build directory, DCMTK fails. Excerpts below. Any idea?
-Greg
[48%] Performing configure step for ‘DCMTK’
– Info: C++11 features disabled
[0%] Building CXX object
ofstd/libsrc/CMakeFiles/ofstd.dir/ofchrenc.cc.o
In file included from /usr/include/c++/6/cstdint:35:0,
from /home/gcs6/build/slicer-4/Slicer-
build/DCMTK/ofstd/include/dcmtk/ofstd/ofstdinc.h:279,
from /home/gcs6/build/slicer-4/Slicer-
build/DCMTK/ofstd/include/dcmtk/ofstd/oftypes.h:74,
from /home/gcs6/build/slicer-4/Slicer-
build/DCMTK/ofstd/include/dcmtk/ofstd/ofcond.h:28,
from /home/gcs6/build/slicer-4/Slicer-
build/DCMTK/ofstd/include/dcmtk/ofstd/ofchrenc.h:28,
from /home/gcs6/build/slicer-4/Slicer-
build/DCMTK/ofstd/libsrc/ofchrenc.cc:25:
/usr/include/c++/6/bits/c++0x\_warning.h:32:2: error: #error This file
requires compiler and library support for the ISO C++ 2011 standard.
This support must be enabled with the -std=c++11 or -std=gnu++11
compiler options.
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---
### Author:  [@jcfr](https://discourse.slicer.org/u/jcfr)
#### Post date: [October 31, 2017, 4:43pm UTC](https://discourse.slicer.org/t/build-error-on-linux/1334/2 "2017-10-31T16:43:51Z")
How do you configure Slicer ?
---
### Author:  [@gcsharp](https://discourse.slicer.org/u/gcsharp)
#### Post date: [October 31, 2017, 5:01pm UTC](https://discourse.slicer.org/t/build-error-on-linux/1334/3 "2017-10-31T17:01:13Z")
After reading CMakeLists.txt, I learned that I could tell Slicer to use
c++11 by changing the VTK version.
I would propose changing that logic to the below, so that one could
choose on the command line to enable c++11 even with VTK 7.
If you like I can give a pull request.
---
### Author:  [@jcfr](https://discourse.slicer.org/u/jcfr)
#### Post date: [October 31, 2017, 5:18pm UTC](https://discourse.slicer.org/t/build-error-on-linux/1334/4 "2017-10-31T17:18:34Z")
Since we will soon transition to C++11, Qt5 and VTK8 as the default. I am sure it is worth the effort.
If c++ 11 is required, I suggest you configure Slicer (from a clean build tree) with
```auto
cmake -DQt5_DIR:PATH=/path/to/lib/cmake/Qt5 ../Slicer
```
---
### Author:  [@chir.set](https://discourse.slicer.org/u/chir.set)
#### Post date: [October 31, 2017, 5:40pm UTC](https://discourse.slicer.org/t/build-error-on-linux/1334/5 "2017-10-31T17:40:02Z")
> [@gcsharp](#):
>
> even with VTK 7
The performance gain I have seen with Volume Rendering using VTK8 is a game changer. I don’t think it’s worthwhile to spend resources with VTK7.