Hi! All problem solved by reading and applying:
http://tldp.org/HOWTO/Lex-YACC-HOWTO-5.html Tamas > Hi! > > With no parser.c. Main() is in the .y file, the > following error occured: > > alfa.tab.cpp: In function `int yyparse()': > alfa.tab.cpp:1097: error: `yylex' undeclared (first > use this function) > alfa.tab.cpp:1097: error: (Each undeclared > identifier > is reported only once > for each function it appears in.) > alfa.tab.cpp:1315: error: `yyerror' undeclared > (first > use this function) > alfa.ypp: In function `int yyerror(char*)': > alfa.ypp:323: error: `int yyerror(char*)' used prior > to declaration > alfa.ypp:328: error: `vrml_filel_linenum' undeclared > (first use this function > > -------------------------- > %% > > int yyerror(char * s) > { > extern char yytext[]; > int linenum; > char * ff; > > linenum = vrml_filel_linenum(&ff); > fprintf(stderr, "%s:%d: Error:\n%s before > '%s'\n\n\n", > ff, linenum, (char *)s, *yytext=='\n'? > "\\n": yytext); > > return 0; > } > > > int main() > { > > return 0; > } > > ----------------------- > > What should i modify to get it work? > > > Hi! > > > > I also have a parser.c file. (sourcehandler) > > Should i have to rewrite it to c++ or just link > it? > > > > Because of this, which is in the .y file: > > vrml_filel_init(f, argv[1]); > > > > it cannot compile to c++. Even if #include > > "prog.tab.h" > > it cannot see the above function. > > > > I have the bottom files too: > > > Got link problem (i suppose) > > > so the general way to compile a lex & yacc > program > > > is: > > > 1. Generate the lexer > > > lex my_file.l > > > 2. Generate the parser > > > yacc -d my_file.y > > > 3. Compile the sources > > > cc -c lex.yy.c y.tab.cc > > > 4. Link the object files (this is what i think > > your > > > problem is) > > > cc -o my_application lex.yy.o y.tab.ob -ll > -ly > > > If you're using flex change the link library > like > > > this: > > > cc -o my_application lex.yy.o y.tab.ob -lfl > > -ly > > > 5. Eat cake > > > > > > it depends on which platform you are developing. > > > If you're developing on windows use a batch > file. > > > -- > > > View this message in context: > > > > > > http://www.nabble.com/flex%2Bbison-and-C%2B%2B%2C-second-part-tf1959860.html#a9905584 > > > Sent from the Gnu - Bison - Help mailing list > > > archive at Nabble.com. > > > > > > > > > > > > _______________________________________________ > > > [EMAIL PROTECTED] > > > http://lists.gnu.org/mailman/listinfo/help-bison > > > > > > > > > > > > > > ____________________________________________________________________________________ > > It's here! Your new message! > > Get new email alerts with the free Yahoo! Toolbar. > > > http://tools.search.yahoo.com/toolbar/features/mail/ > > > > > > _______________________________________________ > > [EMAIL PROTECTED] > > http://lists.gnu.org/mailman/listinfo/help-bison > > > > > > > ____________________________________________________________________________________ > Finding fabulous fares is fun. > Let Yahoo! FareChase search your favorite travel > sites to find flight and hotel bargains. > http://farechase.yahoo.com/promo-generic-14795097 > > > _______________________________________________ > [EMAIL PROTECTED] > http://lists.gnu.org/mailman/listinfo/help-bison > Don't be flakey. Get Yahoo! Mail for Mobile and always stay connected to friends. http://mobile.yahoo.com/mail _______________________________________________ [EMAIL PROTECTED] http://lists.gnu.org/mailman/listinfo/help-bison