undefined reference to `std::__cxx11::basic_string<char, std::char_traits, std::allocator >::c_str() const’
交叉編譯的gcc版本不對
樹莓派上gcc版本是8.3.0
ubuntu上的交叉編譯的gcc版本是4.8
undefined reference to `std::__cxx11::basic_string<char, std::char_traits, std::allocator >::c_str() const’
交叉編譯的gcc版本不對
樹莓派上gcc版本是8.3.0
ubuntu上的交叉編譯的gcc版本是4.8