[Boost-users] [program_options] VC6 compile error 'illegal pure syntax, must be "=0"'

Hi All, I am having problems using the [program_options] library from Boost 1.33. Using this simple program: #include int main(int argc, char* argv[]) { return 0; } I get compile errors like: options_description.hpp(156) : error C2258: illegal pure syntax, must be '= 0' options_description.hpp(156) : error C2252: 'm_default_line_length' : pure specifier can only be specified for functions options_description.hpp(159) : error C2065: 'm_default_line_length' : undeclared identifier This is the first time I'm using Boost. I have successfully developed a program that uses boost::filesystem but I have funny feeling this is a compiler limitation which means I can not use [program_options] on VC6. Can anyone confirm this so I can forget about program_options? Thanks! Hennie.