我有史以来最简单的代码:
#include <iostream>
#include <thread>
void worker()
{
std::cout << "another thread";
}
int main()
{
std::thread t(worker);
std::cout << "main thread" << std::endl;
t.join();
return 0;
}
尽管我仍然无法编译g++
运行它。
更多细节:
$ g++ --version
g++ (Ubuntu/Linaro 4.8.1-10ubuntu8) 4.8.1
Copyright (C) 2013 Free Software Foundation, Inc.
This is free software; see the source for copying conditions. There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
编译命令:
$ g++ main.cpp -o main.out -pthread -std=c++11
运行:
$ ./main.out
terminate called after throwing an instance of 'std::system_error'
what(): Enable multithreading to use std::thread: Operation not permitted
Aborted (core dumped)
现在我陷入困境。在互联网上的每个相关线程中,建议-pthread
在我已经拥有的情况下添加它。
我究竟做错了什么?
PS:这是全新的ubuntu 13.10安装。只有g++
包安装和次要之类的东西chromium
等
PPS:
$ ldd ./a.out
linux-vdso.so.1 => (0x00007fff29fc1000)
libstdc++.so.6 => /usr/lib/x86_64-linux-gnu/libstdc++.so.6 (0x00007fb85397d000)
libgcc_s.so.1 => /lib/x86_64-linux-gnu/libgcc_s.so.1 (0x00007fb853767000)
libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x00007fb85339e000)
libm.so.6 => /lib/x86_64-linux-gnu/libm.so.6 (0x00007fb85309a000)
/lib64/ld-linux-x86-64.so.2 (0x00007fb853c96000)
PPPS:使用clang++
(v3.2)可以编译并正常运行
PPPPS:伙计们,这不是Linux下在GCC中使用std :: thread的正确链接选项是什么的重复项?
PPPPPS:
$ dpkg --get-selections | grep 'libc.*dev'
libc-dev-bin install
libc6-dev:amd64 install
libclang-common-dev install
linux-libc-dev:amd64 install
libpthread-2.17.so
在同一目录中的符号链接。