{$IFDEF Unix}
  {$DEFINE extdecl:=cdecl}
  const
    gdslib = 'libgds.'+sharedsuffix; // Needs completion ?
    libfc  = 'libfbclient.'+sharedsuffix;
    libem  = 'libfbembed.'+sharedsuffix;
    v2  = {$ifndef darwin}'.2'{$else}''{$endif};
    v21 = {$ifndef darwin}'.2.1'{$else}''{$endif};
    v25 = {$ifndef darwin}'.2.5'{$else}''{$endif};
    v251 = {$ifndef darwin}'.2.5.1'{$else}''{$endif};
    fbclib2      = libfc+v2;
    fbembedlib2  = libem+v2;
    fbclib21     = libfc+v21;
    fbembedlib21 = libem+v21;
    fbclib25     = libfc+v25;
    fbembedlib25 = libem+v25;
    fbclib251    = libfc+v251;
    fbembedlib251 = libem+v25;
    // Set default here
    fbclib       = fbclib251;
    fbembedlib   = fbembedlib251;
{$ENDIF}
{$IFDEF Windows}
  {$DEFINE extdecl:=stdcall}
  const
    gdslib = 'gds32.dll';
    fbclib = 'fbclient.dll';
    fbembedlib = 'fbembed.dll';
    libfc  = fbclib;
    libem  = fbembedlib;
{$ENDIF}