I cannot get the x11 app to cross-compile on windows to linux :-(

I made another testcase:
fplink.pp
Code:
unit fplink;

interface

function fpLoadLibrary(AName: PChar): Pointer;
function fpFreeLibrary(ALibHandle: Pointer): Boolean;
function fpGetProcAddress(AProcName: PAnsiChar; ALibHandle: Pointer): Pointer;

implementation

const
 RTLD_LAZY = $001;
 RTLD_NOW = $002;
 RTLD_BINDING_MASK = $003;

 // Seems to work on Debian / Fedora
 LibraryLib = {$IFDEF Linux} 'libdl.so.2'{$ELSE} 'c'{$ENDIF};

function dlopen(Name: PAnsiChar; Flags: LongInt): Pointer; cdecl; external LibraryLib name 'dlopen';
function dlclose(Lib: Pointer): LongInt; cdecl; external LibraryLib name 'dlclose';
function dlsym(Lib: Pointer; Name: PAnsiChar): Pointer; cdecl; external LibraryLib name 'dlsym';

function fpLoadLibrary(AName: PChar): Pointer;
begin
 fpLoadLibrary := dlopen(AName, RTLD_LAZY);
end;


function fpFreeLibrary(ALibHandle: Pointer): Boolean;
begin
 if ALibHandle = nil then
  fpFreeLibrary := False
 else
  fpFreeLibrary := dlclose(ALibHandle) = 0;
end;


function fpGetProcAddress(AProcName: PAnsiChar; ALibHandle: Pointer): Pointer;
begin
 fpGetProcAddress := dlsym(ALibHandle, AProcName);
 if fpGetProcAddress <> nil then
  exit;
end;

end.
Dont mind the fcgitest all it does is using the functions in fplink.pp
But compiling gives:
Code:
D:\Projecten\i386-linux\fastcgi\test>ppcross386 -TLINUX -gl -FlD:\i386-linux\lib 
-XrD:\i386-linux\lib -FL/usr/lib/ld-linux.so.2 -XLAc=c,dl,gmodule fcgitest.pp 
Free Pascal Compiler version 2.5.1 [2009/10/24] for i386 
Copyright (c) 1993-2009 by Florian Klaempfl 
Target OS: Linux for i386 
Compiling fcgitest.pp 
Linking fcgitest 
fplink.o: In function `FPLINK_FPLOADLIBRARY$PCHAR$$POINTER': 
fplink.pp:(.text+0xf): warning: Using 'dlopen' in statically linked applications 
requires at runtime the shared libraries from the glibc version used for linkin 
g 
D:\lib\\libdl.a(dlopen.o): In function `dlopen': 
: undefined reference to `__dlopen' 
D:\lib\\libdl.a(dlclose.o): In function `dlclose': 
: undefined reference to `__dlclose' 
D:\lib\\libdl.a(dlsym.o): In function `dlsym': 
: undefined reference to `__dlsym' 
fcgitest.pp(84,1) Error: Error while linking 
fcgitest.pp(84,1) Fatal: There were 1 errors compiling module, stopping 
Fatal: Compilation aborted
Maybe i should give up .