C++ 在 linux 下的 GCC 中使用 std::thread 的正确链接选项是什么？
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What are the correct link options to use std::thread in GCC under linux?
提问by Earth Engine
Hi I am trying to use std::threadwith G++. Here is my test code
嗨，我正在尝试std::thread与 G++一起使用。这是我的测试代码
#include <thread>
#include <iostream>
int main(int, char **){
std::thread tt([](){ std::cout<<"Thread!"<<std::endl; });
tt.join();
}
It compiles, but when I try to run it the result is:
它可以编译，但是当我尝试运行它时，结果是：
terminate called after throwing an instance of 'std::system_error'
what(): Operation not permitted
Aborted
My compiler version:
我的编译器版本：
$ g++ --version
g++ (Ubuntu/Linaro 4.6.1-9ubuntu3) 4.6.1
Copyright (C) 2011 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.
What is wrong with my test code?
我的测试代码有什么问题？
UPDATE: I use the following command line to compile and run my code.
更新：我使用以下命令行来编译和运行我的代码。
$ g++ -std=c++0x test.cpp
$ ./a.out
and I tried
我试过
$ g++ -std=c++0x -lpthread test.cpp
$ ./a.out
still the same.
还是一样。
回答by hmjd
I think on Linux pthread is used to implement std::threadso you need to specify the -pthreadcompiler option.
我认为在Linux上使用pthread来实现std::thread所以需要指定-pthread编译器选项。
As this is a linking option, this compiler option need to be AFTERthe source files:
由于这是一个连接选项，这个编译器选项需要被后的源文件：
$ g++ -std=c++0x test.cpp -pthread
回答by Bowie Owens
In addition to using -std=c++0xand -pthreadyou must notuse -static.
除了使用-std=c++0x，-pthread你一定不要使用-static.
回答by tuvalu
-std=c++11 -static -pthread -Wl,--whole-archive -lpthread -Wl,--no-whole-archiveworks together with -static!!!
-std=c++11 -static -pthread -Wl,--whole-archive -lpthread -Wl,--no-whole-archive一起工作-static！！！
See here: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=52590#c4
回答by Alexander
Here's a simple CMake file for compiling a C++11 program that uses threads:
这是一个简单的 CMake 文件，用于编译使用线程的 C++11 程序：
CMakeLists.txt:
CMakeLists.txt：
cmake_minimum_required(VERSION 2.8)
list(APPEND CMAKE_CXX_FLAGS "-pthread -std=c++11 ${CMAKE_CXX_FLAGS}")
add_executable(main main.cpp)
One way of building it is:
构建它的一种方法是：
mkdir -p build
cd build
cmake .. && make
回答by Ravi Shankar
Try compiling this way in single command:
尝试在单个命令中以这种方式编译：
g++ your_prog.cpp -o your_output_binary -lpthread -std=gnu++11
You can also try C++11 instead of gnu++11. Hope this works.
你也可以试试 C++11 而不是 gnu++11。希望这有效。
