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I have installed Code::Blocks for Windows and want to compile C++14 code like generic lambdas but the binary version of Code::Blocks that I've installed from codeblocks.org doesn't support the flag
-std=c++14.

How do I update the compiler and enable -std=c++14 flag for Code::Blocks?

Andreas DM
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  • I would recommend installing MinGW-w64. It is an active fork of the original MinGW which has now fallen into disrepair. The link given in the current top answer is one guy's particular build of MinGW-w64; however if you get it from [the official site](http://mingw-w64.org) you can use the online installer and just [pick the options you want](http://stackoverflow.com/questions/29947302/meaning-of-options-in-mingw-w64-installer). – M.M Jul 02 '15 at 10:41

2 Answers2

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To compile your source code using C++14 in Code::Blocks, you, first of all, need to download and install a compiler that supports C++14 features.

Here’s how you can do it on Windows:

  1. Download MinGW from here (particular build) or from official site to choose options
  2. Extract it to for example: C:\ (result will be C:\MinGW)
  3. Open Code::Blocks
  4. Go to Settings => Compiler.
  5. Go to “Toolchain Executables”.
  6. In the top field “Compiler’s installation directory”, change the directory to the one where you extracted the compiler. E.g C:\MinGW.
  7. Change all the necessary files under “Program Files” to match the files under C:\MinGW\bin:

enter image description here

  1. Before you hit “OK”, go to the leftmost tab “Compiler settings”.
  2. Select “Compiler Flags”.
  3. For simplicity, right-click in the list somewhere and select “New Flag”:

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  1. Type in the following and click "OK", and tick the box of the flag you just created:

enter image description here

  1. Lastly, you need to specify the debugger path. Go to "Settings" => "Debugger", click "Default" on the left-hand side and enter the new full path of the executable:

enter image description here

Now, try to compile a program with C++14 features:

#include <iostream>
#include <string>
using namespace std;

auto main() -> int
{
    auto add_two([](auto x, auto y){ return x + y; });

    cout << add_two("I"s, "t"s) << " works!" << endl;
}
Marco D.G.
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Andreas DM
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    I have absolutely no intention of doing this on any machine I manage, and yet I'm compelled to uptick this. This answer is *Stellar* with a capital-S. – WhozCraig Jul 01 '15 at 22:27
  • Another thing to do is to right-click in the "Settings > Compiler" page, and add `-std=c++14` to the list of flags excluded from C builds. Otherwise, building a `.c` file will get that flag, causing a warning. Then, you set your project to have both `-std=c++14 -std=c11`. – M.M Jul 27 '15 at 02:50
  • I followed the procedure, the testing code compiles with no problem. But the following code still causes error `char *m_data = new char[14]{ "Hello, World!" };` this line of code compiles on VS 2015 though. – user4015990 Nov 13 '16 at 18:48
  • Hi Andreas, I have one program in which "codecvt"(#include ) directory is included. After following above steps still i am getting error message like "fatal error: codecvt: No such file or directory". Please give me a solution to resolve issue. while same code is working fine on online c++14 editor or compiler (like.Ideone,codechef etc) – PRAFUL ANAND Aug 31 '17 at 16:52
-1

May a humble newbie make one small suggestion? A small modification to test C++14 code, to allow resulting .exe file to be run independently of the IDE it was created in, slightly modified test program follows:

 #include <iostream>
 #include <string>

 using namespace std;

 auto main() -> int
 {
     auto add_two([](auto x, auto y){ return x + y; });

     cout << add_two("I"s, "t"s) << " works!" << endl;

     cout << "press enter to continue..." << endl;
     cin.ignore(10, '\n');
     cin.get();
 }

Thank you all, peace to all fellow coders, especially Igor Tandetnik.

newmanadam
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