Исходники RevEmu или аналогов

//Какой-то код...
  _unlink("opengl32.dll");
//какой-то код.

int __cdecl _unlink(const char *Filename)
{
  return remove(Filename);
}

int __cdecl remove(const char *Filename)
{
  unsigned __int32 v1; // eax@2
  int result; // eax@5

  if ( DeleteFileA(Filename) )
    v1 = 0;
  else
    v1 = GetLastError();
  if ( v1 )
  {
    _dosmaperr(v1);
    result = -1;
  }
  else
  {
    result = 0;
  }
  return result;
}

#include "quakedef.h"
#include "vstdlib/strtools.h"

//char *date = "Sep 30 2003"; // "Oct 24 1996";
char *date = __DATE__;

char *mon[12] =
{ "Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec" };
char mond[12] =
{ 31,    28,    31,    30,    31,    30,    31,    31,    30,    31,    30,    31 };

class CBuildNumber
{
public:
    CBuildNumber( void )
    {
        ComputeBuildNumber();
    }
    
    // returns days since Oct 24 1996
    int    GetBuildNumber( void )
    {
        return m_nBuildNumber;
    }

private:
    void        ComputeBuildNumber( void )
    {
        int m = 0;
        int d = 0;
        int y = 0;

        for (m = 0; m < 11; m++)
        {
            if (Q_strncasecmp( &date[0], mon[m], 3 ) == 0)
                break;
            d += mond[m];
        }

        d += atoi( &date[4] ) - 1;

        y = atoi( &date[7] ) - 1900;

        m_nBuildNumber = d + (int)((y - 1) * 365.25);

        if (((y % 4) == 0) && m > 1)
        {
            m_nBuildNumber += 1;
        }

        //m_nBuildNumber -= 34995; // Oct 24 1996
        m_nBuildNumber -= 37527;  // Sep 30 2003
    }

    int            m_nBuildNumber;
};

// Singleton
static CBuildNumber g_BuildNumber;

//-----------------------------------------------------------------------------
// Purpose: Only compute build number the first time we run the app
// Output : int
//-----------------------------------------------------------------------------
int build_number( void )
{
    return g_BuildNumber.GetBuildNumber();
}