Hi,
I've created a snake game wich works and compiles very well under Linux. Since Allegro is platform independent I'm now trying to get it working under Windows too. I've set up dev-c++ to link with the Allegro libraries and that isn't the problem. But I get this linker errors:
znake.o(.text+0x30):znake.cpp: undefined reference to `__gxx_personality_sj0'
znake.o(.text+0x74):znake.cpp: undefined reference to `operator new[](unsigned)'
znake.o(.text+0x82):znake.cpp: undefined reference to `std::string::string()'
znake.o(.text+0x97):znake.cpp: undefined reference to `std::string::string()'
znake.o(.text+0xac):znake.cpp: undefined reference to `std::string::string()'
znake.o(.text+0xc1):znake.cpp: undefined reference to `std::string::string()'
znake.o(.text+0xd6):znake.cpp: undefined reference to `std::string::string()'
znake.o(.text+0x112):znake.cpp: undefined reference to `std::basic_stringstream<char, std::char_traits<char>, std::allocator<char> >::basic_stringstream(std::_Ios_Openmode)'
znake.o(.text+0x135):znake.cpp: undefined reference to `std::basic_ostream<char, std::char_traits<char> >& std::operator<< <std::char_traits<char> >(std::basic_ostream<char, std::char_traits<char> >&, char const*)'
znake.o(.text+0x146):znake.cpp: undefined reference to `std::ostream::operator<<(int)'
znake.o(.text+0x156):znake.cpp: undefined reference to `std::basic_ostream<char, std::char_traits<char> >& std::operator<< <std::char_traits<char> >(std::basic_ostream<char, std::char_traits<char> >&, char const*)'
znake.o(.text+0x16e):znake.cpp: undefined reference to `std::basic_stringstream<char, std::char_traits<char>, std::allocator<char> >::str() const'
znake.o(.text+0x190):znake.cpp: undefined reference to `std::string::operator=(std::string const&)'
znake.o(.text+0x1b6):znake.cpp: undefined reference to `std::string::~string()'
znake.o(.text+0x1df):znake.cpp: undefined reference to `std::string::~string()'
znake.o(.text+0x1ea):znake.cpp: undefined reference to `std::string::c_str() const'
znake.o(.text+0x204):znake.cpp: undefined reference to `std::basic_ifstream<char, std::char_traits<char> >::basic_ifstream(char const*, std::_Ios_Openmode)'
znake.o(.text+0x21f):znake.cpp: undefined reference to `std::basic_ios<char, std::char_traits<char> >::eof() const'
znake.o(.text+0x24f):znake.cpp: undefined reference to `std::istream::getline(char*, int)'
znake.o(.text+0x261):znake.cpp: undefined reference to `std::string::operator=(char const*)'
znake.o(.text+0x288):znake.cpp: undefined reference to `std::string::find(char const*, unsigned) const'
znake.o(.text+0x2a9):znake.cpp: undefined reference to `std::string::substr(unsigned, unsigned) const'
znake.o(.text+0x2cb):znake.cpp: undefined reference to `std::string::operator=(std::string const&)'
znake.o(.text+0x2f1):znake.cpp: undefined reference to `std::string::~string()'
znake.o(.text+0x31a):znake.cpp: undefined reference to `std::string::~string()'
znake.o(.text+0x341):znake.cpp: undefined reference to `std::string::find(char const*, unsigned) const'
znake.o(.text+0x362):znake.cpp: undefined reference to `std::string::find(char const*, unsigned) const'
znake.o(.text+0x386):znake.cpp: undefined reference to `std::string::substr(unsigned, unsigned) const'
znake.o(.text+0x3a8):znake.cpp: undefined reference to `std::string::operator=(std::string const&)'
znake.o(.text+0x3ce):znake.cpp: undefined reference to `std::string::~string()'
znake.o(.text+0x3f7):znake.cpp: undefined reference to `std::string::~string()'
znake.o(.text+0x41e):znake.cpp: undefined reference to `std::string::find(char const*, unsigned) const'
znake.o(.text+0x43f):znake.cpp: undefined reference to `std::string::find(char const*, unsigned) const'
znake.o(.text+0x463):znake.cpp: undefined reference to `std::string::substr(unsigned, unsigned) const'
znake.o(.text+0x485):znake.cpp: undefined reference to `std::string::operator=(std::string const&)'
znake.o(.text+0x54b):znake.cpp: undefined reference to `std::string::~string()'
znake.o(.text+0x574):znake.cpp: undefined reference to `std::string::~string()'
znake.o(.text+0x57f):znake.cpp: undefined reference to `std::string::c_str() const'
znake.o(.text+0x598):znake.cpp: undefined reference to `std::string::c_str() const'
znake.o(.text+0x5b1):znake.cpp: undefined reference to `std::string::c_str() const'
znake.o(.text+0x612):znake.cpp: undefined reference to `std::basic_ifstream<char, std::char_traits<char> >::close()'
znake.o(.text+0x790):znake.cpp: undefined reference to `std::basic_ifstream<char, std::char_traits<char> >::~basic_ifstream()'
znake.o(.text+0x7b6):znake.cpp: undefined reference to `std::basic_ifstream<char, std::char_traits<char> >::~basic_ifstream()'
znake.o(.text+0x7dc):znake.cpp: undefined reference to `std::basic_stringstream<char, std::char_traits<char>, std::allocator<char> >::~basic_stringstream()'
znake.o(.text+0x802):znake.cpp: undefined reference to `std::basic_stringstream<char, std::char_traits<char>, std::allocator<char> >::~basic_stringstream()'
znake.o(.text+0x825):znake.cpp: undefined reference to `std::string::~string()'
znake.o(.text+0x848):znake.cpp: undefined reference to `std::string::~string()'
znake.o(.text+0x86b):znake.cpp: undefined reference to `std::string::~string()'
znake.o(.text+0x88e):znake.cpp: undefined reference to `std::string::~string()'
znake.o(.text+0x8b1):znake.cpp: undefined reference to `std::string::~string()'
znake.o(.text+0x8d4):znake.cpp: more undefined references to `std::string::~string()' follow
znake.o(.text+0x1266):znake.cpp: undefined reference to `std::cout'
znake.o(.text+0x126b):znake.cpp: undefined reference to `std::basic_ostream<char, std::char_traits<char> >& std::operator<< <std::char_traits<char> >(std::basic_ostream<char, std::char_traits<char> >&, char const*)'
znake.o(.text+0x1273):znake.cpp: undefined reference to `std::basic_ostream<char, std::char_traits<char> >& std::endl<char, std::char_traits<char> >(std::basic_ostream<char, std::char_traits<char> >&)'
znake.o(.text+0x127b):znake.cpp: undefined reference to `std::ostream::operator<<(std::ostream& (*)(std::ostream&))'
znake.o(.text+0x1326):znake.cpp: undefined reference to `std::cout'
znake.o(.text+0x132b):znake.cpp: undefined reference to `std::basic_ostream<char, std::char_traits<char> >& std::operator<< <std::char_traits<char> >(std::basic_ostream<char, std::char_traits<char> >&, char const*)'
znake.o(.text+0x1333):znake.cpp: undefined reference to `std::basic_ostream<char, std::char_traits<char> >& std::endl<char, std::char_traits<char> >(std::basic_ostream<char, std::char_traits<char> >&)'
znake.o(.text+0x133b):znake.cpp: undefined reference to `std::ostream::operator<<(std::ostream& (*)(std::ostream&))'
znake.o(.text+0x1423):znake.cpp: undefined reference to `std::cout'
znake.o(.text+0x1428):znake.cpp: undefined reference to `std::basic_ostream<char, std::char_traits<char> >& std::operator<< <std::char_traits<char> >(std::basic_ostream<char, std::char_traits<char> >&, char const*)'
znake.o(.text+0x1430):znake.cpp: undefined reference to `std::basic_ostream<char, std::char_traits<char> >& std::endl<char, std::char_traits<char> >(std::basic_ostream<char, std::char_traits<char> >&)'
znake.o(.text+0x1438):znake.cpp: undefined reference to `std::ostream::operator<<(std::ostream& (*)(std::ostream&))'
znake.o(.text+0x14f0):znake.cpp: undefined reference to `std::cout'
znake.o(.text+0x14f5):znake.cpp: undefined reference to `std::basic_ostream<char, std::char_traits<char> >& std::operator<< <std::char_traits<char> >(std::basic_ostream<char, std::char_traits<char> >&, char const*)'
znake.o(.text+0x14fd):znake.cpp: undefined reference to `std::basic_ostream<char, std::char_traits<char> >& std::endl<char, std::char_traits<char> >(std::basic_ostream<char, std::char_traits<char> >&)'
znake.o(.text+0x1505):znake.cpp: undefined reference to `std::ostream::operator<<(std::ostream& (*)(std::ostream&))'
znake.o(.text+0x22f0):znake.cpp: undefined reference to `__gxx_personality_sj0'
znake.o(.text+0x2483):znake.cpp: undefined reference to `operator new[](unsigned)'
znake.o(.text+0x24a4):znake.cpp: undefined reference to `std::basic_ifstream<char, std::char_traits<char> >::basic_ifstream(char const*, std::_Ios_Openmode)'
znake.o(.text+0x24cb):znake.cpp: undefined reference to `std::istream::getline(char*, int)'
znake.o(.text+0x24d9):znake.cpp: undefined reference to `std::basic_ifstream<char, std::char_traits<char> >::close()'
znake.o(.text+0x256e):znake.cpp: undefined reference to `std::basic_ifstream<char, std::char_traits<char> >::~basic_ifstream()'
znake.o(.text+0x25ad):znake.cpp: undefined reference to `std::basic_ifstream<char, std::char_traits<char> >::~basic_ifstream()'
znake.o(.text+0x2632):znake.cpp: undefined reference to `__gxx_personality_sj0'
znake.o(.text+0x2679):znake.cpp: undefined reference to `std::ios_base::Init::Init()'
znake.o(.text+0x2866):znake.cpp: undefined reference to `std::ios_base::Init::~Init()'
znake.o(.text$_ZNSt6vectorI5CTileSaIS0_EE13_M_insert_auxEN9__gnu_cxx17__normal_iteratorIPS0_S2_EERKS0_+0xf):znake.cpp: undefined reference to `__gxx_personality_sj0'
znake.o(.text$_ZNSt6vectorI5CTileSaIS0_EE13_M_insert_auxEN9__gnu_cxx17__normal_iteratorIPS0_S2_EERKS0_+0x213):znake.cpp: undefined reference to `__cxa_begin_catch'
znake.o(.text$_ZNSt6vectorI5CTileSaIS0_EE13_M_insert_auxEN9__gnu_cxx17__normal_iteratorIPS0_S2_EERKS0_+0x259):znake.cpp: undefined reference to `__cxa_rethrow'
znake.o(.text$_ZNSt6vectorI5CTileSaIS0_EE13_M_insert_auxEN9__gnu_cxx17__normal_iteratorIPS0_S2_EERKS0_+0x28e):znake.cpp: undefined reference to `__cxa_end_catch'
znake.o(.text$_ZNSt6vectorI11CSnakeBlockSaIS0_EE13_M_insert_auxEN9__gnu_cxx17__normal_iteratorIPS0_S2_EERKS0_+0xf):znake.cpp: undefined reference to `__gxx_personality_sj0'
znake.o(.text$_ZNSt6vectorI11CSnakeBlockSaIS0_EE13_M_insert_auxEN9__gnu_cxx17__normal_iteratorIPS0_S2_EERKS0_+0x21f):znake.cpp: undefined reference to `__cxa_begin_catch'
znake.o(.text$_ZNSt6vectorI11CSnakeBlockSaIS0_EE13_M_insert_auxEN9__gnu_cxx17__normal_iteratorIPS0_S2_EERKS0_+0x265):znake.cpp: undefined reference to `__cxa_rethrow'
znake.o(.text$_ZNSt6vectorI11CSnakeBlockSaIS0_EE13_M_insert_auxEN9__gnu_cxx17__normal_iteratorIPS0_S2_EERKS0_+0x29a):znake.cpp: undefined reference to `__cxa_end_catch'
znake.o(.text$_ZNSt6vectorI6CAppleSaIS0_EE13_M_insert_auxEN9__gnu_cxx17__normal_iteratorIPS0_S2_EERKS0_+0xf):znake.cpp: undefined reference to `__gxx_personality_sj0'
znake.o(.text$_ZNSt6vectorI6CAppleSaIS0_EE13_M_insert_auxEN9__gnu_cxx17__normal_iteratorIPS0_S2_EERKS0_+0x1fe):znake.cpp: undefined reference to `__cxa_begin_catch'
znake.o(.text$_ZNSt6vectorI6CAppleSaIS0_EE13_M_insert_auxEN9__gnu_cxx17__normal_iteratorIPS0_S2_EERKS0_+0x241):znake.cpp: undefined reference to `__cxa_rethrow'
znake.o(.text$_ZNSt6vectorI6CAppleSaIS0_EE13_M_insert_auxEN9__gnu_cxx17__normal_iteratorIPS0_S2_EERKS0_+0x26d):znake.cpp: undefined reference to `__cxa_end_catch'
znake.o(.text$_ZNSt6vectorI5CTileSaIS0_EED1Ev+0xc):znake.cpp: undefined reference to `__gxx_personality_sj0'
znake.o(.text$_ZNSt6vectorI6CAppleSaIS0_EED1Ev+0xc):znake.cpp: undefined reference to `__gxx_personality_sj0'
znake.o(.text$_ZNSt6vectorI11CSnakeBlockSaIS0_EED1Ev+0xc):znake.cpp: undefined reference to `__gxx_personality_sj0'
znake.o(.text$_ZNSt14__simple_allocI11CSnakeBlockSt24__default_alloc_templateILb1ELi0EEE10deallocateEPS0_j+0x1d):znake.cpp: undefined reference to `std::__default_alloc_template<true, 0>::deallocate(void*, unsigned)'
znake.o(.text$_ZNSt14__simple_allocI6CAppleSt24__default_alloc_templateILb1ELi0EEE10deallocateEPS0_j+0x1d):znake.cpp: undefined reference to `std::__default_alloc_template<true, 0>::deallocate(void*, unsigned)'
znake.o(.text$_ZNSt14__simple_allocI5CTileSt24__default_alloc_templateILb1ELi0EEE10deallocateEPS0_j+0x23):znake.cpp: undefined reference to `std::__default_alloc_template<true, 0>::deallocate(void*, unsigned)'
znake.o(.text$_ZNSt14__simple_allocI5CTileSt24__default_alloc_templateILb1ELi0EEE8allocateEj+0x27):znake.cpp: undefined reference to `std::__default_alloc_template<true, 0>::allocate(unsigned)'
znake.o(.text$_ZNSt14__simple_allocI11CSnakeBlockSt24__default_alloc_templateILb1ELi0EEE8allocateEj+0x1d):znake.cpp: undefined reference to `std::__default_alloc_template<true, 0>::allocate(unsigned)'
znake.o(.text$_ZNSt14__simple_allocI6CAppleSt24__default_alloc_templateILb1ELi0EEE8allocateEj+0x1d):znake.cpp: undefined reference to `std::__default_alloc_template<true, 0>::allocate(unsigned)'
make.exe: *** [znake.exe] Error 1
Execution terminated
I'm compiling as C++. Wich libraries will I need to include in order to use the std:: stuff?
Thanks 
Did you include the stl headers?
You mean:
#include <vector> #include <string> #include <sstream> #include <iostream> #include <fstream>
?
Of course I did 
. Btw, I've added using namespace std; below it
Sounds like you compiled with "gcc" instead of "g++".
Even when I use the "override build command" option and replace gcc with g++ it comes up with the same erros.
ok, show us the command line text before the errors.
Whoops, my bad 
. I clicked the wrong button after changing gcc into g++. But now it comes up with some other errors:
Compiler: Default compiler
Building Makefile: "C:\Kipmans\znake\Makefile.win"
Executing make clean
rm -f znake.o znake.exe
g++ znake.cpp -o znake.o ../allegro/lib/mingw32/liballeg.a
gcc.exe znake.o -o "znake.exe" -L"C:/Dev-Cpp/lib" -mwindows ../allegro/lib/mingw32/liballeg.a
znake.o(.text+0x0):sstream-inst.cc: multiple definition of `mainCRTStartup'
C:/Dev-Cpp/Bin/../lib/gcc-lib/mingw32/3.3.1/../../../crt2.o(.text+0x0):crt1.c: first defined here
znake.o(.text+0x20):sstream-inst.cc: multiple definition of `WinMainCRTStartup'
C:/Dev-Cpp/Bin/../lib/gcc-lib/mingw32/3.3.1/../../../crt2.o(.text+0x20):crt1.c: first defined here
znake.o(.text+0x40):sstream-inst.cc: multiple definition of `atexit'
C:/Dev-Cpp/Bin/../lib/gcc-lib/mingw32/3.3.1/../../../crt2.o(.text+0x40):crt1.c: first defined here
znake.o(.text+0x60):sstream-inst.cc: multiple definition of `_onexit'
C:/Dev-Cpp/Bin/../lib/gcc-lib/mingw32/3.3.1/../../../crt2.o(.text+0x60):crt1.c: first defined here
znake.o(.text+0x280):sstream-inst.cc: multiple definition of `__do_sjlj_init'
C:/Dev-Cpp/Bin/../lib/gcc-lib/mingw32/3.3.1/crtbegin.o(.text+0x0):crtstuff.c: first defined here
znake.o(.data+0x0):stl-inst.cc: multiple definition of `_argc'
C:/Dev-Cpp/Bin/../lib/gcc-lib/mingw32/3.3.1/../../../crt2.o(.data+0x0):crt1.c: first defined here
znake.o(.data+0x4):stl-inst.cc: multiple definition of `_argv'
C:/Dev-Cpp/Bin/../lib/gcc-lib/mingw32/3.3.1/../../../crt2.o(.data+0x4):crt1.c: first defined here
make.exe: *** [znake.exe] Error 1
Execution terminated
It seems there's still something wrong with the libs or something.
gcc.exe znake.o -o "znake.exe" -L"C:/Dev-Cpp/lib" -mwindows ../allegro/lib/mingw32/liballeg.a
Even when I run that command manually but with g++ instead of gcc it gives the same errors.
[edit]
Anyone? I need to get this finished before 20:00 (GMT+1) tonight 
-l../allegro/lib/mingw32/liballeg.a
or, when allegro is installed properly (in Dev-Cpp\lib), just ..
-lalleg
The way you've done it will include the whole of allegro in each .o file
Same errors. Even when I put this in a bat file and run it:
g++ znake.cpp -o znake.o -lalleg
g++ znake.o -o "znake.exe" -L"C:/Dev-Cpp/lib" -mwindows -lalleg
When I use this command line:
g++ znake.cpp -o "znake.exe" -mwindows -lalleg
It compiles but then the program crashes immediately after starting it.
[edit]
It compiles 
(with g++ znake.cpp -o znake -lalleg) but when running the game the SCREEN FLICKERS LIKE HELL, though i'm using page flipping. What could be the problem with that?
Thats going to be an issue in your own code. We can't really help you with that unless you have a specific problem with example code etc.