I am having problems with compiling a simple parsing example that I created. I have read over half of the spirit guide and took one of the examples a guide for creating my program. Here is the full error message that I hinted above. What is wrong with my code? I am using boot-1.31.0 with gcc-3.3.2 (gentoo). g++ -DPACKAGE_NAME=\"\" -DPACKAGE_TARNAME=\"\" -DPACKAGE_VERSION=\"\" -DPACKAGE_STRING=\"\" -DPACKAGE_BUGREPORT=\"\" -DPACKAGE=\"cs507_EC\" -DVERSION=\"0.1.0\" -DSTDC_HEADERS=1 -DHAVE_SYS_TYPES_H=1 -DHAVE_SYS_STAT_H=1 -DHAVE_STDLIB_H=1 -DHAVE_STRING_H=1 -DHAVE_MEMORY_H=1 -DHAVE_STRINGS_H=1 -DHAVE_INTTYPES_H=1 -DHAVE_STDINT_H=1 -DHAVE_UNISTD_H=1 -DHAVE_DLFCN_H=1 -I. -I. -I../../src -O2 -c -o RE_Parser.o `test -f RE_Parser.cpp || echo './'`RE_Parser.cpp RE_Parser.cpp: In function `int main()': RE_Parser.cpp:18: error: no matching function for call to `parse(const char*, RE_Parser&, const boost::spirit::space_parser&)' make[2]: *** [RE_Parser.o] Error 1 The code is: -------------------- Parser -------------------- #ifndef RE_PARSER_H_ #define RE_PARSER_H_ #include <string> #include "FileException.hpp" #include <boost/spirit.hpp> #include <iostream> using namespace std; using namespace boost::spirit; //namespace re_parser { class RE_Parser; struct RE_Grammar : public grammar<RE_Grammar> { template <typename ScannerT> struct definition { definition (RE_Grammar const& self) { r_rule = *r_rule[&RE_Parser::process_Kleene] | (r_rule >> s_rule)[&RE_Parser::process_Concat] | (r_rule >> ch_p('+') >> s_rule)[&RE_Parser::process_Or] | s_rule[&RE_Parser::process_Char]; s_rule = ch_p('a') | ch_p ('b') | ch_p ('c') | ch_p ('^') | ch_p ('0'); } rule<ScannerT> r_rule, s_rule; rule<ScannerT> const& start() const { return r_rule;} }; }; class RE_Parser { public: void process_Kleene (char const*, char const*){ cout << "Kleene star" << endl;}; void process_Concat (char const*, char const*){ cout << "Concatenate" << endl; }; void process_Or (char const*, char const*, char* const*){ cout << "Or" << endl;}; void process_Char (char const*){ cout << "Char" << endl;}; }; //} /* namespace re_parser */ #endif /* RE_PARSER_H_ */ ---------- Main ---------- #include "Parser.hpp" #include <string> #include <iostream> #include <fstream> using namespace re_parser; int main () { RE_Parser reg_rdr; string input_str; ifstream reg_file; reg_file.open("reg_expr.txt"); while (getline(reg_file,input_str)) { parse_info<> info = parse(input_str.c_str(), reg_rdr, space_p); if (info.full) { cout << "Parsing succeeded." << endl; } else { cout << "Parsing failed. Stopped at: " << info.stop << endl; } } } Stephen -- Stephen Torri GPG Key: http://www.cs.wustl.edu/~storri/storri.asc