Compiling fcgi-test.cpp

[nblew]

I’ll be the first to confess that I don’t know what I’m doing.  It’s been awhile since I’ve worked in C++ and I’m trying to get fcgi-test.cpp to build.

My environment:

Windows XP
Apache 2.x
VC6

I had FastCGI running on Apache and wanted to get it working with cgicc, so I attempted to build cgicc.  I immediately got a host of “error C2039: ‘isspace’ is not an element of ‘std’” – type errors, so I stripped out any “std::” prefix that the compiler complained about (probably a bad move).

Cgicc then compiled and I put cgicc.lib and cgicc.dll in places where my fcgi-test project could get to them (cgicc.lib in /visual studio/vc98/libs/ until I figured out a better place for it and cgicc.dll in /windows/system32).

Then I attempted to compile fcgi-test.cpp:

#include <exception>
#include <iostream>


#include "cgicc/Cgicc.h"
#include "cgicc/HTTPHTMLHeader.h"
#include "cgicc/HTMLClasses.h"

#include "FCgiIO.h"

// To use the debug logging feature, the variable gLogFile MUST be
// defined, and it _must_ be an ofstream
#if DEBUG
  std::ofstream gLogFile( "/Debug/cgicc.log", std::ios::app );
#endif

using namespace std;
using namespace cgicc;

int
main(int /*argc*/,
     const char **/*argv*/,
     char **/*envp*/)
{
  unsigned count = 0;

  FCGX_Request request;

  FCGX_Init();
  FCGX_InitRequest(&request, 0, 0);

  while(FCGX_Accept_r(&request) == 0) {

    try {
      FCgiIO IO(request);
      Cgicc CGI(&IO);

      // Output the HTTP headers for an HTML document, and the HTML 4.0 DTD info
      IO << HTTPHTMLHeader() << HTMLDoctype( HTMLDoctype::eStrict ) << endl
         << html().set( "lang", "en" ).set( "dir", "ltr" ) << endl;

      // Set up the page's header and title.
      IO << head() << endl
         << title() << "GNU cgicc v" << CGI.getVersion() << title() << endl
         << head() << endl;

      // Start the HTML body
      IO << body() << endl;

      // Print out a message
      IO << h1("Cgicc/FastCGI Test") << endl
         << "count: " << count++ << br() << endl;

      IO  << "Form Elements:" << br() << endl;

      for(const_form_iterator i = CGI.getElements().begin();
          i != CGI.getElements().end(); ++i )
        IO << i->getName() << " = " << i->getValue() << br() << endl;

      // Close the document
      IO << body() << html();
 
   }
    catch(const exception&) {
      // handle error condition
    }

    FCGX_Finish_r(&request);
  }

  return 0;
}

It failed with a boatload of warnings (ugh) and 2 errors:

Linking...

fcgi-test.obj : error LNK2001: unresolved external symbol "__declspec(dllimport) public: void __thiscall cgicc::FCgiIO::`vbase destructor'(void)" (__imp_??_DFCgiIO@cgicc@@QAEXXZ)

fcgi-test.obj : error LNK2001: unresolved external symbol "__declspec(dllimport) public: __thiscall cgicc::FCgiIO::FCgiIO(struct FCGX_Request &)" (__imp_??0FCgiIO@cgicc@@QAE@AAUFCGX_Request@@@Z)

c:\development\httpd\fcgi-bin\test.fcgi : fatal error LNK1120: 2 unresolved externals
…

The compiler apparently is having a problem with the line FCgiIO IO(request);

Happily hacking away, I added # define CGICC_EXPORTS 1 in cgidefs.h, which eliminated the first link error.  My changes to cgidefs.h are excerpted here:

…
// Win32-specific setup
#ifdef WIN32

// HACK ALERT: forcing dllexport
# define CGICC_EXPORTS 1

// export library symbols
#  ifdef CGICC_EXPORTS
#    define CGICC_API __declspec(dllexport)
#  else
#    define CGICC_API __declspec(dllimport)
#  endif

#  define HOST "Win32"
#  define VERSION "3.2.3"

#else
#  define CGICC_API
#endif /* WIN32 */

#endif /* ! _CGIDEFS_H_ */
…

I’m stuck on the second link error.  Of course, even if I somehow managed to hack the second link error away I’ll certainly still have problems.  So hopefully an expert out there can show me how to build cgicc and fcgi-test.cpp the right way and get this up and running

Much thanks for accommodating my complete lack-of-clues…

[Russell Kliese]

nblew wrote:
> I’ll be the first to confess that I don’t know what I’m doing.  It’s been
> awhile since I’ve worked in C++ and I’m trying to get fcgi-test.cpp to
> build.
>
> My environment:
>
> Windows XP
> Apache 2.x
> VC6
It might be worth trying to build using visual studio 2005 (VC8 if I
remember correctly). It's libraries seem to be more standards compliant
and you might have more luck. It's available as a free download from M$.

Let us know how you go.

Cheers,

Russell






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