测试你的编译器是否支持c++0x(c++11)

c++出新标准了，c++11或者是c++0x

那么怎么测试你的编译器是否支持这些特性呢？

新建一个文件，main.cpp。然后敲入下面代码：

#include<iostream>

using namespace std;

int main( int argc, char** argv )
{
        auto fn = []( int a, int b ){ return a + b; };
        int c = fn( 2, 3 );
        cout<<"result:"<<c<<endl;
        return 0;
}

在编译选项中加入

-std=c++0x

所以命令如下：

g++ -Wall -std=c++0x -o main,out main.cpp

需要说明的是，c++0x是一系列的新特性组成，上面的例子中，我们只测试了

auto, 隐式函数

所以你想全面测试，就需要检查每个特性，下面列出所有的新引入的特性，同时给出了gcc哪些版本支持哪些特性

Language Feature	Proposal	Available in GCC?
Rvalue references	N2118	GCC 4.3
Rvalue references for *this	N2439	No [Note]
Initialization of class objects by rvalues	N1610	Yes
Non-static data member initializers	N2756	GCC 4.7
Variadic templates	N2242	GCC 4.3
Extending variadic template template parameters	N2555	GCC 4.4
Initializer lists	N2672	GCC 4.4
Static assertions	N1720	GCC 4.3
auto-typed variables	N1984	GCC 4.4
Multi-declarator auto	N1737	GCC 4.4
Removal of auto as a storage-class specifier	N2546	GCC 4.4
New function declarator syntax	N2541	GCC 4.4
New wording for C++0x lambdas	N2927	GCC 4.5
Declared type of an expression	N2343	GCC 4.3
Right angle brackets	N1757	GCC 4.3
Default template arguments for function templates	DR226	GCC 4.3
Solving the SFINAE problem for expressions	DR339	GCC 4.4
Template aliases	N2258	GCC 4.7
Extern templates	N1987	Yes
Null pointer constant	N2431	GCC 4.6
Strongly-typed enums	N2347	GCC 4.4
Forward declarations for enums	N2764	GCC 4.6
Generalized attributes	N2761	Work in progress
Generalized constant expressions	N2235	GCC 4.6
Alignment support	N2341	No
Delegating constructors	N1986	GCC 4.7
Inheriting constructors	N2540	No
Explicit conversion operators	N2437	GCC 4.5
New character types	N2249	GCC 4.4
Unicode string literals	N2442	GCC 4.5
Raw string literals	N2442	GCC 4.5
Universal character name literals	N2170	GCC 4.5
User-defined literals	N2765	GCC 4.7
Standard Layout Types	N2342	GCC 4.5
Defaulted and deleted functions	N2346	GCC 4.4
Extended friend declarations	N1791	GCC 4.7
Extending sizeof	N2253	GCC 4.4
Inline namespaces	N2535	GCC 4.4
Unrestricted unions	N2544	GCC 4.6
Local and unnamed types as template arguments	N2657	GCC 4.5
Range-based for	N2930	GCC 4.6
Explicit virtual overrides	N2928 N3206 N3272	GCC 4.7
Minimal support for garbage collection and reachability-based leak detection	N2670	No
Allowing move constructors to throw [noexcept]	N3050	GCC 4.6 (core language only)
Defining move special member functions	N3053	GCC 4.6
Concepts [not part of C++11]	N2773	Some development [Branch]
Concurrency
Sequence points	N2239	No
Atomic operations	N2427	GCC 4.4
Strong Compare and Exchange	N2748	No
Bidirectional Fences	N2752	No
Memory model	N2429	No
Data-dependency ordering: atomics and memory model	N2664	No
Propagating exceptions	N2179	GCC 4.4
Abandoning a process and at_quick_exit	N2440	No
Allow atomics use in signal handlers	N2547	No
Thread-local storage	N2659	No
Dynamic initialization and destruction with concurrency	N2660	No
C99 Features in C++11
__func__ predefined identifier	N2340	GCC 4.3
C99 preprocessor	N1653	GCC 4.3
long long	N1811	GCC 4.3
Extended integral types	N1988	No

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