具有以下内容test.cpp
:
#include <iostream>
int main() {
int a{};
std::cout << "TEST" << std::endl;
}
当使用最新的 GCC (4.8.0) 构建时g++ test.cpp -std=c++11
(gcc 也失败),文件编译。尝试使用最新的 clang 进行编译
clang version 3.4 (trunk 182322)
Target: x86_64-apple-darwin12.3.0
Thread model: posix
构建失败:
clang test.cpp -std=c++11
Undefined symbols for architecture x86_64:
"std::ostream::operator<<(std::ostream& (*)(std::ostream&))", referenced from:
_main in test-NcubkF.o
"std::ios_base::Init::Init()", referenced from:
___cxx_global_var_init in test-NcubkF.o
"std::ios_base::Init::~Init()", referenced from:
___cxx_global_var_init in test-NcubkF.o
"std::cout", referenced from:
_main in test-NcubkF.o
"std::basic_ostream<char, std::char_traits<char> >& std::endl<char, std::char_traits<char> >(std::basic_ostream<char, std::char_traits<char> >&)", referenced from:
_main in test-NcubkF.o
"std::basic_ostream<char, std::char_traits<char> >& std::operator<<<std::char_traits<char> >(std::basic_ostream<char, std::char_traits<char> >&, char const*)", referenced from:
_main in test-NcubkF.o
ld: symbol(s) not found for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)
clang
(或)可以做什么才能gcc
在 C++11 模式下工作?