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 6 has been released

v6.0.0: 2018-09-17

Notable changes:

  • C++ __cxa_atexit thanks to Martin Storsjö and Liu Hao
  • Massive additions to support UCRT thanks to Martin Storsjö
  • Sync COM interface headers with Wine development thanks to Jacek Caban
  • WinRT additions thanks to Hugo Beauzée-Luyssen
  • ARM32 and ARM64 additions thanks to Martin Storsjö
  • CRT library api-ms-win-core additions thanks to Martin Storsjö
  • CRT library def file reorganization thanks to 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

G4JC created ticket #95

Add 'SearchAPI.h'

Martin Storsjö committed [f1a55b]

widl: Allow overriding the default include path

Martin Storsjö committed [5a6103]

widl: Regenerate Makefile.in and configure

LH_Mouse committed [4539f4]

include/winioctl.h: Add new device types.

HEMMI, Shigeru posted a comment on discussion Open Discussion

Dear Kai, Thanks for the reply and I agree with what you wrote. Best regards, HEMMI, Shigeru

Kai Tietz posted a comment on discussion Open Discussion

Hi, well, any fortran application needs libgfortran runtime. Therefore I assume that fortran library is linked statically here. No idea why that happend, but it seems to me the most obvious cause. Regards, Kai Am Di., 25. Sep. 2018 um 06:41 Uhr schrieb HEMMI, Shigeru hemmi-shigeru@users.sourceforge.net: An executable program, MySomeExe.exe is built from some forran(+C) source files with the x86_64-8.1.0 mingw-w64 tool. I examined shared library dependencies by dumpbin command of MS. The output is...

crillion posted a comment on ticket #139

Ok. I usually install mingw-w64 via the installer mingw-w64-install.exe available at https://sourceforge.net/projects/mingw-w64/files/ . On this same link I usually check if a new compiler version has become available (but it's not clear if the same compiler has been re-released) So, who should I ask to, or on what other url should I check ? Is there a list of these toolchain providers ? Thanks, Marco

Jonathan Yong posted a comment on ticket #139

We don't dictate toolchain release schedules, you can always ask the providers themselves.

Rafał Harabień created merge request #12

winerror.h: Add error codes in range 740-807

Kai Henningsen created ticket #763

mktime hangs?