gcc -pg -g -c displayfilter.cpp
In file included from /usr/include/c++/3.3/backward/iostream.h:31,
                 from dll.h:3,
                 from propaccumulator.h:12,
                 from propfilter.h:15,
                 from displayfilter.h:9,
                 from displayfilter.cpp:33:
/usr/include/c++/3.3/backward/backward_warning.h:32:2: warning: #warning This file includes at least one deprecated or antiquated header. Please consider using one of the 32 headers found in section 17.4.1.2 of the C++ standard. Examples include substituting the <X> header for the <X.h> header for C++ includes, or <sstream> instead of the deprecated header <strstream.h>. To disable this warning use -Wno-deprecated.
displayfilter.cpp:56: error: default argument given for parameter 1 of `
   DisplayFilter1::DisplayFilter1(VIF*, Accumulator*, long long int, long long 
   int)'
displayfilter.h:30: error: after previous specification in `
   DisplayFilter1::DisplayFilter1(VIF*, Accumulator*, long long int, long long 
   int)'
displayfilter.cpp:56: error: default argument given for parameter 2 of `
   DisplayFilter1::DisplayFilter1(VIF*, Accumulator*, long long int, long long 
   int)'
displayfilter.h:30: error: after previous specification in `
   DisplayFilter1::DisplayFilter1(VIF*, Accumulator*, long long int, long long 
   int)'
displayfilter.cpp:56: error: default argument given for parameter 3 of `
   DisplayFilter1::DisplayFilter1(VIF*, Accumulator*, long long int, long long 
   int)'
displayfilter.h:30: error: after previous specification in `
   DisplayFilter1::DisplayFilter1(VIF*, Accumulator*, long long int, long long 
   int)'
displayfilter.cpp:56: error: default argument given for parameter 4 of `
   DisplayFilter1::DisplayFilter1(VIF*, Accumulator*, long long int, long long 
   int)'
displayfilter.h:30: error: after previous specification in `
   DisplayFilter1::DisplayFilter1(VIF*, Accumulator*, long long int, long long 
   int)'
displayfilter.cpp:63: error: default argument given for parameter 1 of `void 
   DisplayFilter1::SetDisplay(VIF*)'
displayfilter.h:31: error: after previous specification in `void 
   DisplayFilter1::SetDisplay(VIF*)'
displayfilter.cpp:67: error: default argument given for parameter 1 of `int 
   DisplayFilter1::SetSource(Accumulator*)'
displayfilter.h:32: error: after previous specification in `int 
   DisplayFilter1::SetSource(Accumulator*)'
make: *** [displayfilter.o] Error 1