GCC for Windows 64 & 32 bits


Mingw-w64 is an advancement of the original mingw.org project, created to support the GCC compiler on Windows systems. It has forked it in 2007 in order to provide support for 64 bits and new APIs. It has since then gained widespread use and distribution.

The development and community are very active and welcoming with new contributors every month and simple installers.

Version 7 has been released

v7.0.0: 2019-11-10

Notable changes:

  • _FORTIFY_SOURCE support thanks to Christian Franke.
  • Lots of math fixes from Martin Storsjö.
  • Many headers updated from Wine by Jacek Caban.
  • UCRT support by Martin Storsjö.
And many other additions thanks to, but not limited to (in Alphabetical order)

You can also look at the full list of versions.

Headers, Libraries and Runtime

  • More than a million lines of headers are provided, not counting generated ones, and regularly expanded to track new Windows APIs.
  • Everything needed for linking and running your code on Windows.
  • Winpthreads, a pthreads library for C++11 threading support and simple integration with existing project.
  • Winstorecompat, a work-in-progress convenience library that eases conformance with the Windows Store.
  • Better-conforming and faster math support compared to Visual Studio's.


  • gendef: generate Visual Studio .def files from .dll files.
  • genidl: generate .idl files from .dll files.
  • widl: compile .idl files.

Friend projects

Mingw-w64 interacts a lot with other projects in order to help everyone move forward. Contributions have been going to and coming from these projects:

Most Recent Activity

LH_Mouse committed [da69d7]

headers: winnt add structures for memory APIs

Sai Pavan Boddu posted a comment on discussion Open Discussion

Hi, I observer windows 10 has unix sockets support. And I see things working good, except we are missing afunix.h header. Do you have support of AF_UNIX or any feature plans ?

LH_Mouse committed [bb0d63]

headers: memoryapi add Windows 10 functions

Reuben Thomas posted a comment on ticket #827

Subscribing to this bug.

Martin Storsjö committed [903e1a]

crt: Fix the initialization of the _commode variable

Martin Storsjö committed [e70faa]

crt: Regenerate Makefile.in

Martin Storsjö committed [41470f]

crt: Remove a leftover declaration of __MINGW_IMP_SYMBOL(_fmode)

Martin Storsjö committed [0d5433]

crt: Remove unused/unnecessary declarations of _commode in internal.h

Martin Storsjö committed [870c86]

crt: Use __p__commode instead of __MINGW_IMP_SYMBOL(_commode) for initialization

LH_Mouse committed [0fe223]

headers: sensors add missing guids