error: unknown type name ‘bool’
C90 does not support the boolean data type. C99 does include it with this include:
lex
How to compile LEX/YACC files on Windows?
As for today (2011-04-05, updated 2017-11-29) you will need the lastest versions of: flex-2.5.4a-1.exe bison-2.4.1-setup.exe After that, do a full install in a directory of your preference without spaces in the name. I suggest C:\GnuWin32. Do not install it in the default (C:\Program Files (x86)\GnuWin32) because bison has problems with spaces in directory names, not to say parenthesis. Also, consider installing Dev-CPP in … Read more