[ns] urgent help on installation of ns-allinone-2.1b5

[vivek mishra]

hi all,
we have successfully installed ns-allinone-2.1b5 but we could not install the nam package.can any one help us in following errors. 

in file incuded from netview.cc:48:
paint.h:95:declaration does not declare anything
paint.h:95:parse error before '^' token
paint.h:99:semicolon missing after declaration of 'paint' 
paint.h:in static member function 'static paint* paint::instance()':
paint.h:60:'instance_' undecleared (first use this function )
paint.h:60: (Each undeclared identifier is reported only once for each function
   it appears in.)
paint.h: In member function `_XGC* Paint::paint_to_gc(int)':
paint.h:65: `gctab_' undeclared (first use this function)
paint.h: In member function `int Paint::num_gc()':
paint.h:69: `ngc_' undeclared (first use this function)
paint.h: In member function `rgb* Paint::paint_to_rgb(int)':
paint.h:73: `rgb_' undeclared (first use this function)
paint.h: In member function `int Paint::thick()':
paint.h:89: `thick_' undeclared (first use this function)
paint.h: In member function `int Paint::thin()':
paint.h:93: `thin_' undeclared (first use this function)
paint.h: At global scope:
paint.h:99: parse error before `:' token
paint.h:102: `Paint*instance_' used prior to declaration
paint.h:103: `int ngc_' used prior to declaration
paint.h:104: `_XGC**gctab_' used prior to declaration
paint.h:105: `rgb*rgb_' used prior to declaration
paint.h:106: `int thick_' used prior to declaration
paint.h:107: `int thin_' used prior to declaration
paint.h:110: parse error before `}' token
make: *** [netview.o] Error 1
Nam make failed! Continue ...
ln: `ns': File exists
Please compile your nam separately

vivek mishra
india