On Thu, Sep 5, 2019 at 7:53 PM Richard Shaw <hobbes1...@gmail.com> wrote:
> I have both SoQt and SIMVoleon buliding with it but I'm getting an error with 
> Pivy:
>
> + /usr/bin/python3 setup.py build '--executable=/usr/bin/python3 -s'
> running build
> BUILDSTDERR: Deprecated command line option: -modern. This option is now 
> always on.
> BUILDSTDERR: Inventor/SbDict.h:53: Error: Unable to find 'cstddef'

The errors indicate that the compiler cannot find the standard C++
headers.  These are the first things I would check:
1. Does the spec file include BuildRequires: gcc-c++?
2. Is setup.py choosing g++ as the compiler?
3. Is -nostdinc++ showing up in the build flags?

If all of those check out, maybe you could share your spec files.
-- 
Jerry James
http://www.jamezone.org/
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