Description of problem:

TigerVNC is using parts of the C++11 standard within their code base.  The CXXFLAGS should be explicitly set to use that behavior so that the compiler knows to use the expected behavior there.


Version-Release number of selected component (if applicable):tigervnc-1.10.1-1.fc31


How reproducible:
100%

Steps to Reproduce:
1. Rebuild the RPM with a compiler that defaults to use C++99
2.
3.

Actual results:
/builddir/build/BUILD/tigervnc-1.10.1/common/rfb/util.h:68:21: warning: non-static data member initializers only available with -std=c++11 or -std=gnu++11 [enabled by default]
     size_t length = 0;
                     ^
/builddir/build/BUILD/tigervnc-1.10.1/common/rfb/util.h: In destructor 'rfb::CharArray::~CharArray()':
/builddir/build/BUILD/tigervnc-1.10.1/common/rfb/util.h:60:15: error: 'nullptr' was not declared in this scope
         buf = nullptr;
               ^


Expected results:
Builds as expected

Additional info:

Change :

export CXXFLAGS="$CFLAGS"

to

export CXXFLAGS="$CFLAGS -std=c++11"