如何在 Qt Creator 中启用 C++11？
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How to enable C++11 in Qt Creator?
提问by Andrey Chernukha
The title is pretty self-descriptive. I've downloaded Qt Creator 2.7.0, and I am trying to compile some basic C++11 code:
标题是非常自我描述的。我已经下载了 Qt Creator 2.7.0，我正在尝试编译一些基本的 C++11 代码：
int my_array[5] = {1, 2, 3, 4, 5};
for(int &x : my_array)
{
x *= 2;
}
I'm receiving the following error:
我收到以下错误：
range based for loops are not allowed in c++ 98 mode
Yet, according to this articlethis version of Qt Creator supports C++11. So how do I enable it?
然而，根据这篇文章，这个版本的 Qt Creator 支持 C++11。那么我该如何启用它呢？
回答by Ali
According to this siteadd
根据本站添加
CONFIG += c++11
CONFIG += c++11
to your .pro file (see at the bottom of that web page). It requires Qt 5.
到您的 .pro 文件（参见该网页底部）。它需要 Qt 5。
The other answers, suggesting
其他答案，建议
QMAKE_CXXFLAGS += -std=c++11(or QMAKE_CXXFLAGS += -std=c++0x)
QMAKE_CXXFLAGS += -std=c++11（或QMAKE_CXXFLAGS += -std=c++0x）
also work with Qt 4.8 and gcc / clang.
也适用于Qt 4.8 和 gcc/clang。
回答by LemonCool
Add this to your .pro file
将此添加到您的.pro 文件中
QMAKE_CXXFLAGS += -std=c++11
or
或者
CONFIG += c++11
回答by Яois
As an alternative for handling both cases addressed in Ali's excellent answer, I usually add
作为处理 Ali 出色回答中提到的两种情况的替代方法，我通常添加
# With C++11 support
greaterThan(QT_MAJOR_VERSION, 4){
CONFIG += c++11
} else {
QMAKE_CXXFLAGS += -std=c++0x
}
to my project files. This can be handy when you don't really care much about which Qt version is people using in your team, but you want them to have C++11 enabled in any case.
到我的项目文件。当您不太关心团队中人们使用哪个 Qt 版本时，这会很方便，但您希望他们在任何情况下都启用 C++11。
回答by guardezi
add to your qmake file
添加到您的 qmake 文件
QMAKE_CXXFLAGS+= -std=c++11
QMAKE_LFLAGS += -std=c++11
回答by asloob
If you are using an earlier version of QT (<5) try this
如果您使用的是较早版本的 QT (<5) 试试这个
QMAKE_CXXFLAGS += -std=c++0x
回答by Bretzelus
The only place I have successfully make it work is by searching in:
我成功使它工作的唯一地方是通过搜索：
...\Qt\{5.9; or your version}\mingw{53_32; or your version}\mkspecs\win32-g++\qmake.conf:
...\Qt\{5.9; 或者你的版本}\mingw{53_32; 或您的版本}\mkspecs\win32-g++\qmake.conf：
Then at the line:
然后在这一行：
QMAKE_CFLAGS += -fno-keep-inline-dllexport
Edit :
编辑 ：
QMAKE_CFLAGS += -fno-keep-inline-dllexport -std=c++11
