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I try to use emplace() function for an unordered_map and compiler says that no such function exists.

I put -std=c+11 and it says cc1plus.exe: error: unrecognized command line option '-std=c+11'

Can i somehow use C++11 functionality with mingw?

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Try c++11 instead of c+11 – Andy Prowl Apr 21 at 20:58
Either that, or try c++0x – Charles Salvia Apr 21 at 21:05
Neither works (i allready have c++0x ON) – Petros Drakoulis Apr 21 at 21:23
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What version is your MinGW (You can check with gcc -v)? std=c++11 was introduced relatively recently. – milleniumbug Apr 21 at 22:03
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@PetrosDrakoulis: Then maybe it's not available on that version. MinGW is up to 4.7.2 now. – Nicol Bolas Apr 22 at 5:42
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From the GCC documentation

C++0x was the working name of a new ISO C++ standard, which was then released in 2011 as C++11 and introduces a host of new features into the standard C++ language and library. This project seeks to implement new C++11 features in GCC and to make it one of the first compilers to bring C++11 to C++ programmers.

C++11 features are available as part of the "mainline" GCC compiler in the trunk of GCC's Subversion repository and in GCC 4.3 and later. To enable C++0x support, add the command-line parameter -std=c++0x to your g++ command line. Or, to enable GNU extensions in addition to C++0x extensions, add -std=gnu++0x to your g++ command line. GCC 4.7 and later support -std=c++11 and -std=gnu++11 as well.

So, for gcc 4.3 through 4.6 use -std=c++0x, for later version use -std=c++11. Library support for map::emplace was added in gcc 4.8

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same error: 'class std::unordered_map<std::basic_string<char>, dictionaryWord>' has no member named 'emplace' – Petros Drakoulis Apr 22 at 13:40
I have come to believe that i can not use c++ 11, or at least all of it, with 4.6. – Petros Drakoulis Apr 22 at 13:47
You will need gcc 4.8 to use map::emplace, see e.g. this question – rhalbersma Apr 22 at 14:45
The project i try to compile for windows, was made in Linux Gcc 4.7.2 a month ago. There is emplace() in linux gcc 4.7.2 – Petros Drakoulis Apr 22 at 18:19
@PetrosDrakoulis That's surprising because the gcc 4.7.2 docs says that emplace is missing for map. See also ideone.com/dqScM9 Safe bet is to install MinGW 4.8, e.g. from nuwen.net/mingw.html – rhalbersma Apr 22 at 18:57
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