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This patch enables the C++11 thread, mutex and future features using pthread-w32 as the implementation (which comes bundled with MinGW).
This assumes you are using the official MinGW distribution.
If you are applying this patch to a version of MinGW GCC later than 4.7, you should examine and apply the patches rather than using the zip file.
NOTE: "libstdthread" is a completely unofficial name, so should only be part of your local build command.
On gcc toolchains already supporting threads, it is a part of libstdc++ and linked by default for C++ projects.
Update, 14 September 2012:
All patches here are released in to the public domain, and free for use for any purpose.
Please note that this patch cannot enable thread safety throughout libstdc++, as it is applied post-build. This means some conforming programs that use standard library facilities from multiple threads may result in unexpected behaviour. It has also been known to cause problems with other libstdc++ components, breaking std::fstream being one noted example.
You may prefer to look in to the mingw-w64 stdthread branch, which is working to enable std::thread support properly in MinGW.
Tags: MinGW, C++, libstdc++, thread
Author: Julian Smythe