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

Jacek Caban committed [b8e9cf]

dcomptypes.h: Add some missing enums.

Jacek Caban committed [cd4e5b]

shlwapi.h: Add missing ASSOCF flags.

Jacek Caban committed [3cdd00]

dcomp.h: Add some missing interfaces.

Jacek Caban committed [1b373b]

inputscope.idl: Add missing InputScope values.

Martin Storsjö committed [2beac2]

crt: Fix sscanf with double/long double output for arm

Paul A Bristow posted a comment on ticket #146

I note that this version is posix-dwarf GNU C++17 (MinGW-W64 x86_64-posix-dwarf, built by Brecht Sanders) version 9.2.0 (x86_64-w64-mingw32) compiled by GNU C version 9.2.0, GMP version 6.1.2, MPFR version 4.0.2, MPC version 1.1.0, isl version isl-0.22-GMP Previously I have used the version that is at "C:\Program Files\mingw-w64\x86_64-8.1.0-win32-seh-rt_v6-rev0\mingw64" On that release there is an installer that gives you options for which variant you want. For Arch: x86_64, Threads: win32 and Exceptions:...

Martin Storsjö committed [cf6070]

crt: Regenerate Makefile.in

Martin Storsjö committed [e39d0f]

widl: Quote path names in the makefile, to fix installing into a path that contains spaces

Martin Storsjö committed [1f903c]

widl: Regenerate Makefile.in

Martin Storsjö committed [157375]

crt: Quote occurrances of TARGET_SYSTEM_ROOT, to fix installing into paths that contain spaces