OS X 1.8
CMAKE 2.8.9
叮当
$ clang -v
Apple clang version 4.0 (tags/Apple/clang-421.10.60) (based on LLVM 3.1svn)
Target: x86_64-apple-darwin12.0.0
Thread model: posix
CMAKELists.txt:
cmake_minimum_required (VERSION 2.8.9)
project (Test)
add_executable(Test main.cpp)
主.cpp
//Create a C++11 thread from the main program
#include <iostream>
#include <thread>
//This function will be called from a thread
void call_from_thread() {
std::cout << "Hello, World!" << std::endl;
}
int main() {
//Launch a thread
std::thread t1(call_from_thread);
//Join the thread with the main thread
t1.join();
return 0;
}
我的错误:
$ make
Scanning dependencies of target Test
[100%] Building CXX object CMakeFiles/Test.dir/main.cpp.o
test/main.cpp:4:10: fatal error: 'thread' file not found
#include <thread>
^
1 error generated.
make[2]: *** [CMakeFiles/Test.dir/main.cpp.o] Error 1
make[1]: *** [CMakeFiles/Test.dir/all] Error 2
make: *** [all] Error 2
那么Clang的版本不支持C++v11特性吗?同样的程序可以在 OSX 10.8 上的 gcc-4.7.1 下编译
这个参考文献说它应该有效
http://www.cpprocks.com/a-comparison-of-c11-language-support-in-vs2012-g-4-7-and-clang-3-1/
我做错了什么?
您需要向编译器提供
-std=c++11
和 -stdlib=libc++
标志才能完全激活其 C++11 支持。这可以通过 ccmake (打开高级模式(使用 t
),并将 CMAKE_CXX_FLAGS
设置为 -std=c++11 -stdlib=libc++
)或通过 CMakeLists.txt 中的等效指令来完成:
cmake_minimum_required(VERSION 2.8.9)
set(CMAKE_CXX_FLAGS "-std=c++11 -stdlib=libc++")
project(Test)
add_executable(Test main.cpp)