[Mingw-users] Missing strlen symbol

[Chris H. <pop...@so...>]

 
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Hi,

I don't assume this is a bug. I'm just wondering why this piece of
code doesn't show a link to 'strlen' in MSVCRT.DLL while viewing the
.EXE file in Dependency Walker.

The code compiles fine, and it works the way it should.

I use the MinGW-runtime version 2 and...
C:\>gcc -v
Reading specs from C:/usr/bin/../lib/gcc-lib/mingw32/2.95.3-7/specs
gcc version 2.95.3-7 (mingw experimental)

This is what I do, and further down is my code:
C:\>gcc -Wall -o myapp.exe mysourcecode.c -Os -s -lversion

#define WIN32_LEAN_AND_MEAN 1
#include <windows.h>
#include <stdio.h>
#include <string.h>

#define FILENAME "foobar.exe"
#define DATFILE "output.dat"

typedef struct _fileversion
{
  int nVersion;
  int nMajor;
  int nMinor;
  int nRevision;
} FILEVERSION, *LPFILEVERSION;

char *
BaseName (char *p)
{
  char *fn = strrchr (p, '\\');
  return fn ? fn + 1 : p;
}

char *
DirName (char *lpPath)
{
  int i;
  char *fn = strrchr (lpPath, '\\');

  if (fn)
    {
     i = strlen (lpPath) - strlen (fn); /* Here's the 'strlen' that I
use */
      lpPath[i] = '\0';
    }

  return lpPath;
}

void
GetFileVersion (LPFILEVERSION lpfv, LPCTSTR lpFileName)
{
  DWORD dwSize, dwHandle;
  LPBYTE lpBlock = NULL;
  UINT uLen;
  VS_FIXEDFILEINFO *pvsffi;

  dwSize = GetFileVersionInfoSize ((LPTSTR) lpFileName, &dwHandle);
  lpBlock = (LPBYTE) HeapAlloc (GetProcessHeap (), 0, dwSize + 1);
  ZeroMemory (lpBlock, dwSize + 1);
  GetFileVersionInfo ((LPTSTR) lpFileName, 0L, dwSize, lpBlock);
  VerQueryValue (lpBlock, TEXT ("\\"), (LPVOID *) &pvsffi, &uLen);
  HeapFree (GetProcessHeap (), 0, lpBlock);

  lpfv->nVersion = HIWORD (pvsffi->dwFileVersionMS);
  lpfv->nMajor = LOWORD (pvsffi->dwFileVersionMS);
  lpfv->nMinor = HIWORD (pvsffi->dwFileVersionLS);
  lpfv->nRevision = LOWORD (pvsffi->dwFileVersionLS);

  return;
}

int
main (int argc, char **argv)
{
  char buf[MAX_PATH], datfile[MAX_PATH];
  FILEVERSION fv;

  GetModuleFileName (NULL, buf, MAX_PATH);
  sprintf (datfile, "%s\\%s", DirName (buf), DATFILE);

  GetFileVersion (&fv, FILENAME);

  sprintf (buf, "%d", fv.nVersion);
  WritePrivateProfileString ("Version", "Version", buf, datfile);

  sprintf (buf, "%d", fv.nMajor);
  WritePrivateProfileString ("Version", "Major", buf, datfile);

  sprintf (buf, "%d", fv.nMinor);
  WritePrivateProfileString ("Version", "Minor", buf, datfile);

  sprintf (buf, "%d", fv.nRevision);
  WritePrivateProfileString ("Version", "Revision", buf, datfile);

  WritePrivateProfileString ("Download", "FileName", BaseName
(FILENAME), datfile);

  return 0;
}

Regards
Chris

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