/home/babis/Downloads/rigsofrods-next-build/rigsofrods/src/rigs-of-rods/source/main/RoRPrerequisites.h:81:55: error: call of overloaded ‘toString(double)’ is ambiguous
 #define TOSTRING(x)  Ogre::StringConverter::toString(x)
                                                       ^
/home/babis/Downloads/rigsofrods-next-build/rigsofrods/src/rigs-of-rods/source/main/gameplay/RoRFrameListener.cpp:715:53: note: in expansion of macro ‘TOSTRING’
       String ssmsg = _L("New simulation speed: ") + TOSTRING(floor(mLastSimulationSpeed * 1000.0f) / 10.0f) + "%
                                                     ^
In file included from /home/babis/Downloads/rigsofrods-next-build/rigsofrods/src/rigs-of-rods/source/main/RoRPrerequisites.h:46:0,
                 from /home/babis/Downloads/rigsofrods-next-build/rigsofrods/src/rigs-of-rods/source/main/gameplay/RoRFrameListener.h:24,
                 from /home/babis/Downloads/rigsofrods-next-build/rigsofrods/src/rigs-of-rods/source/main/gameplay/RoRFrameListener.cpp:20:
/opt/rigsofrods/include/OGRE/OgreStringConverter.h:73:23: note: candidate: static Ogre::String Ogre::StringConverter::toString(Ogre::Real, short unsigned int, short unsigned int, char, std::ios_base::fmtflags)
         static String toString(Real val, unsigned short precision = 6,
                       ^
/opt/rigsofrods/include/OGRE/OgreStringConverter.h:91:23: note: candidate: static Ogre::String Ogre::StringConverter::toString(int, short unsigned int, char, std::ios_base::fmtflags)
         static String toString(int val, unsigned short width = 0,
                       ^
In file included from /home/babis/Downloads/rigsofrods-next-build/rigsofrods/src/rigs-of-rods/source/main/RoRPrerequisites.h:46:0,
                 from /home/babis/Downloads/rigsofrods-next-build/rigsofrods/src/rigs-of-rods/source/main/gameplay/RoRFrameListener.h:24,
                 from /home/babis/Downloads/rigsofrods-next-build/rigsofrods/src/rigs-of-rods/source/main/gameplay/RoRFrameListener.cpp:20:
/opt/rigsofrods/include/OGRE/OgreStringConverter.h:96:23: note: candidate: static Ogre::String Ogre::StringConverter::toString(unsigned int, short unsigned int, char, std::ios_base::fmtflags)
         static String toString(unsigned int val,
                       ^
/opt/rigsofrods/include/OGRE/OgreStringConverter.h:100:23: note: candidate: static Ogre::String Ogre::StringConverter::toString(size_t, short unsigned int, char, std::ios_base::fmtflags)
         static String toString(size_t val,
                       ^
/opt/rigsofrods/include/OGRE/OgreStringConverter.h:121:23: note: candidate: static Ogre::String Ogre::StringConverter::toString(long int, short unsigned int, char, std::ios_base::fmtflags)
         static String toString(long val,
                       ^
/opt/rigsofrods/include/OGRE/OgreStringConverter.h:127:23: note: candidate: static Ogre::String Ogre::StringConverter::toString(bool, bool)
         static String toString(bool val, bool yesNo = false);
                       ^
source/main/main_sim/CMakeFiles/RoR.dir/build.make:254: recipe for target 'source/main/main_sim/CMakeFiles/RoR.dir/__/gameplay/RoRFrameListener.cpp.o' failed
make[2]: *** [source/main/main_sim/CMakeFiles/RoR.dir/__/gameplay/RoRFrameListener.cpp.o] Error 1
make[2]: *** Waiting for unfinished jobs....
In file included from /home/babis/Downloads/rigsofrods-next-build/rigsofrods/src/rigs-of-rods/source/main/terrain/TerrainObjectManager.h:32:0,
                 from /home/babis/Downloads/rigsofrods-next-build/rigsofrods/src/rigs-of-rods/source/main/terrain/TerrainManager.cpp:42:
/opt/rigsofrods/include/PagedGeometry/ImpostorPage.h:382:12: warning: ‘template<class> class std::auto_ptr’ is deprecated [-Wdeprecated-declarations]
       std::auto_ptr<ImpostorTextureResourceLoader> loader;
            ^
In file included from /usr/include/c++/5.3.0/bits/locale_conv.h:41:0,
                 from /usr/include/c++/5.3.0/locale:43,
                 from /usr/include/c++/5.3.0/iomanip:43,
                 from /opt/rigsofrods/include/OGRE/OgreStdHeaders.h:76,
                 from /opt/rigsofrods/include/OGRE/OgrePrerequisites.h:334,
                 from /opt/rigsofrods/include/OGRE/OgreConfigFile.h:31,
                 from /home/babis/Downloads/rigsofrods-next-build/rigsofrods/src/rigs-of-rods/source/main/utils/ConfigFile.h:30,
                 from /home/babis/Downloads/rigsofrods-next-build/rigsofrods/src/rigs-of-rods/source/main/terrain/TerrainManager.h:23,
                 from /home/babis/Downloads/rigsofrods-next-build/rigsofrods/src/rigs-of-rods/source/main/terrain/TerrainManager.cpp:20:
/usr/include/c++/5.3.0/bits/unique_ptr.h:49:28: note: declared here
   template<typename> class auto_ptr;
                            ^
CMakeFiles/Makefile2:127: recipe for target 'source/main/main_sim/CMakeFiles/RoR.dir/all' failed
make[1]: *** [source/main/main_sim/CMakeFiles/RoR.dir/all] Error 2
Makefile:83: recipe for target 'all' failed
make: *** [all] Error 2
==> ERROR: A failure occurred in build().
    Aborting...