Question

我正在尝试编译游戏，但却遇到了100多个错误：

C:\Users\AppData\Local\Temp\cctQCagR.o: In function `load_image(std::string)':
main.cpp:(.text+0x4bd4): undefined reference to `std::string::c_str() const'
C:\Users\Bill\AppData\Local\Temp\cctQCagR.o: In function `createShip(float, float)':
main.cpp:(.text+0x4da4): undefined reference to `std::allocator<char>::allocator()'
main.cpp:(.text+0x4dbc): undefined reference to `std::basic_string<char, std::char_tra
its<char>, std::allocator<char> >::basic_string(char const*, std::allocator<char> cons
t&)'
main.cpp:(.text+0x4de4): undefined reference to `std::basic_string<char, std::char_tra
its<char>, std::allocator<char> >::~basic_string()'
main.cpp:(.text+0x4e04): undefined reference to `std::basic_string<char, std::char_tra
its<char>, std::allocator<char> >::~basic_string()'
main.cpp:(.text+0x4e1c): undefined reference to `std::allocator<char>::~allocator()'
main.cpp:(.text+0x4e28): undefined reference to `std::allocator<char>::allocator()'
main.cpp:(.text+0x4e40): undefined reference to `std::basic_string<char, std::char_tra
its<char>, std::allocator<char> >::basic_string(char const*, std::allocator<char> cons
t&)'
main.cpp:(.text+0x4e60): undefined reference to `std::allocator<char>::~allocator()'
main.cpp:(.text+0x4e70): undefined reference to `__cxa_end_cleanup'
main.cpp:(.text+0x4e98): undefined reference to `std::basic_string<char, std::char_tra
its<char>, std::allocator<char> >::~basic_string()'
main.cpp:(.text+0x4eb8): undefined reference to `std::basic_string<char, std::char_tra
its<char>, std::allocator<char> >::~basic_string()'
main.cpp:(.text+0x4ed0): undefined reference to `std::allocator<char>::~allocator()'
main.cpp:(.text+0x4ef4): undefined reference to `std::allocator<char>::~allocator()'
main.cpp:(.text+0x4f04): undefined reference to `__cxa_end_cleanup'
C:\Users\Bill\AppData\Local\Temp\cctQCagR.o: In function `load_files()':
main.cpp:(.text+0x5164): undefined reference to `std::allocator<char>::allocator()'
main.cpp:(.text+0x517c): undefined reference to `std::basic_string<char, std::char_tra
its<char>, std::allocator<char> >::basic_string(char const*, std::allocator<char> cons
t&)'

Answer 1

我相信您正在尝试使用gcc而不是g ++编译main.cpp。

#include <string>
#include <stdio.h>
int main()
{
    std::string bla;
    bla = "BLA BLA";
    printf("%s\n",bla.c_str());
    return 0;
}

如果您使用gcc构建上述代码段，则会出现您提到的错误。如果你使用g ++它构建好，这是有道理的，因为g ++将确保它在构建C ++时放在一起的所有正确的东西。

Answer 2

您需要将二进制文件与libstdc ++链接起来。如果使用gcc：

，则需要在命令行中明确指定它

gcc -lstdc++ tmp.cpp

如果使用g ++，默认情况下会链接libstdc ++：

g++ tmp.cpp

编译时出现C ++错误

2 个答案: