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Problems useing bison with m4 macro processor

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stj
2008-06-03
2012-07-26

  • stj

    stj - 2008-06-03

    Hi!

    I'am trying to figure out why the c++ code generation via bison failed. I'am using bison 2.1 and the m4 1.4.9. I try to call:

    bison -d -v --skeleton=lalr1.cc InputParser.yacc

    and get the error:

    E:\work\Programmierung\Compiler\FlexBison\ToolChain>bison -d -v --skeleton=lalr1
    .cc InputParser.yacc
    m4:C:/PROGRA~1/GnuWin32/share/bison/lalr1.cc:22: cannot open `c:/progra~1/Bison/
    share/bison/c++.m4': No such file or directory
    bison: untergeordnetes Programm äm4ô fehlgeschlagen (R³ckgabewert 1)

    The c++.m4 file is at C:\Programme\GnuWin32\share\bison. So why complain?

    I'am using a batch file for that. As you can see there are some problems with the char set. Maybee this can be the error.

    I also suddied a litle bit the m4 manual and set the M4PATH enviroment value to "C:\Programme\GnuWin32\share\bison".

    Thanks!

    Stefan

     

    • JensH

      JensH - 2008-06-10

      Hi Stefan,

      I just got the same problem and solved it:

      You don't have to set the M4PATH-Variable. But notice the difference between
      the location you installed Bison to:

      C:/PROGRA~1/GnuWin32/share/bison/lalr1.cc

      and the location, where the c++.m4-file cannot be opened:

      c:/progra~1/Bison/share/bison/c++.m4

      The first one is .../BISON/share/... and the other one is .../GNUWIN32/share/... !!

      So i just COPIED everything from the GnuWin32-directory to a new one called Bison, so that under both locations the files for the C++ Version can be found.

      Best regards
      Jens

       

      • John D. Gwinner

        John D. Gwinner - 2008-06-10

        There's still a problem though - it's not a good solution to copy duplicate files all over the place.

        At a minimum, you should use a junction point :)

        == John ==

         
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