C:\Users\Io\Desktop\s>mingw32-make
gcc main.cc
C:\Users\Io\AppData\Local\Temp/ccAncaaa.o(.text+0xd):main.cc: undefined refer
ence to `std::string::size() const'
C:\Users\Io\AppData\Local\Temp/ccAncaaa.o(.text+0x60):main.cc: undefined refe
rence to `std::string:

perator[](unsigned int) const'
C:\Users\Io\AppData\Local\Temp/ccAncaaa.o(.text+0x9f):main.cc: undefined refe
rence to `std::string:

perator[](unsigned int) const'
C:\Users\Io\AppData\Local\Temp/ccAncaaa.o(.text+0xce):main.cc: undefined refe
rence to `std::string:

perator[](unsigned int) const'
C:\Users\Io\AppData\Local\Temp/ccAncaaa.o(.text+0x12b):main.cc: undefined ref
erence to `__gxx_personality_sj0'
C:\Users\Io\AppData\Local\Temp/ccAncaaa.o(.text+0x168):main.cc: undefined ref
erence to `operator new(unsigned int)'
C:\Users\Io\AppData\Local\Temp/ccAncaaa.o(.text+0x185):main.cc: undefined ref
erence to `Pezzo::Pezzo(Colore)'
C:\Users\Io\AppData\Local\Temp/ccAncaaa.o(.text+0x1a1):main.cc: undefined ref
erence to `operator delete(void*)'
C:\Users\Io\AppData\Local\Temp/ccAncaaa.o(.text+0x1d1):main.cc: undefined ref
erence to `Pezzo::getColore()'
C:\Users\Io\AppData\Local\Temp/ccAncaaa.o(.text+0x1e9):main.cc: undefined ref
erence to `std::cout'
C:\Users\Io\AppData\Local\Temp/ccAncaaa.o(.text+0x1ee):main.cc: undefined ref
erence to `std::basic_ostream<char, std::char_traits<char> >& std:

perator<< <s
td::char_traits<char> >(std::basic_ostream<char, std::char_traits<char> >&, char
const*)'
C:\Users\Io\AppData\Local\Temp/ccAncaaa.o(.text+0x1ff):main.cc: undefined ref
erence to `std::cout'
C:\Users\Io\AppData\Local\Temp/ccAncaaa.o(.text+0x20b):main.cc: undefined ref
erence to `std::basic_ostream<char, std::char_traits<char> >& std:

perator<< <s
td::char_traits<char> >(std::basic_ostream<char, std::char_traits<char> >&, char
const*)'
C:\Users\Io\AppData\Local\Temp/ccAncaaa.o(.text+0x249):main.cc: undefined ref
erence to `std::ios_base::Init::Init()'
C:\Users\Io\AppData\Local\Temp/ccAncaaa.o(.text+0x264):main.cc: undefined ref
erence to `std::ios_base::Init::~Init()'
collect2: ld returned 1 exit status
mingw32-make: *** [main.o] Error 1