Lev,

when trying to compile the newest version of dealII, I get a bunch of errors:

    [ 46%] Building CXX object
    source/fe/CMakeFiles/obj_fe.debug.dir/mapping_q_generic.cc.o
    /home/lev/aspect/dealii_debug/source/fe/mapping_q_generic.cc:443: error:
    using ‘typename’ outside of template
    /home/lev/aspect/dealii_debug/source/fe/mapping_q_generic.cc:497: error:
    using ‘typename’ outside of template
    /home/lev/aspect/dealii_debug/source/fe/mapping_q_generic.cc:575: error:
    using ‘typename’ outside of template


I tried removing typenames from these 3 positions, but then other errors came 
up:

    [ 53%] Building CXX object
    source/numerics/CMakeFiles/obj_numerics.debug.dir/vector_tools_rhs.cc.o
            In file included from
    /home/lev/aspect/dealii_debug/source/numerics/vector_tools_rhs.cc:83:
    
/home/lev/aspect/dealii_debug/build/source/numerics/vector_tools_rhs.inst:17:
    error: using ‘typename’ outside of template
    
/home/lev/aspect/dealii_debug/build/source/numerics/vector_tools_rhs.inst:25:
    error: using ‘typename’ outside of template
    
/home/lev/aspect/dealii_debug/build/source/numerics/vector_tools_rhs.inst:40:
    error: using ‘typename’ outside of template
    
/home/lev/aspect/dealii_debug/build/source/numerics/vector_tools_rhs.inst:48:
    error: using ‘typename’ outside of template
    
/home/lev/aspect/dealii_debug/build/source/numerics/vector_tools_rhs.inst:63:
    error: using ‘typename’ outside of template
    (...179 more)


Hints on how to fix it would be appreciated.

These .inst files are generated by expanding .inst.in files. The problem needs to be fixed there, and that turned out to be rather straightforward:
  https://github.com/dealii/dealii/pull/3648

Nobody else seems to be seeing these because everyone is using newer compilers that support C++11 where this is no longer an error. Thanks for reporting this!

Best
 W.

--
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Wolfgang Bangerth          email:                 [email protected]
                           www: http://www.math.colostate.edu/~bangerth/

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