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 8 has been released

v8.0.0: 2020-09-18

Notable changes:

  • New Hyper-V headers and libraries by Biswapriyo Nath
  • Many headers updated from Wine by Jacek Caban.
  • ARM math improvements by Martin Storsjö
  • floating point fixes by Liu Hao
  • many *printf compatibility fixes by Liu Hao and Martin Storsjö
  • massive Windows App Store API updates by Steve Lhomme
  • winstorecompat library updates by Martin Storsjö
  • __USE_MINGW_ANSI_STDIO now automatically enabled in C99 and C11 mode when not using UCRT by Pali Rohár
  • wdm and ddk updates by Zebediah Figura
  • UCRT for Windows Store Apps (-lucrtapp) by Martin Storsjö
  • Audioclient and ActivateAudioInterfaceAsync API updates by Liu Hao
  • DirectX SDKs are now always installed
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

Zaita posted a comment on ticket #867

Where can I download a version with this fix? I've tried MinGW-W64 GCC-8.1.0 - x86_64-posix-seh from https://sourceforge.net/projects/mingw-w64/files/ with no luck. Also Tried the TDM-GCC 9.2.0 and Nuwen MinGW64 9.2.0 both built from Mingw64. Also. I updated my code to #undef STRICT_ANSI and manually call _fpreset(); ( https://pastebin.com/NE8D0DVb ) and this seems to work perfectly. Super hacky though, but will be sufficient enough to allow me to get correct results until a fix is available. Note:...

Martin Storsjö posted a comment on ticket #867

I believe this issue has been fixed by https://sourceforge.net/p/mingw-w64/mingw-w64/ci/295fafcf584ce105426045b03d17aa90d105808d/ (which should be part of the mingw-w64 v8.0.0 release). That commit fixes it for pthreads (and std::threads with libstdc++), but won't fix it if manually creating threads or using libc++ yet though.

罗勇刚 created ticket #874

isinf can not detect double type properly

Martin Storsjö committed [6f53db]

crt: Remove support for providing __CTOR_LIST__ for LLD 7 and older

Martin Storsjö committed [6a1b8d]

crt: Regenerate configure and config.h.in

Martin Storsjö committed [ae4031]

crt: Regenerate Makefile.in after earlier Makefile.am updates

Martin Storsjö committed [97806c]

headers: Implement __debugbreak, MemoryBarrier and YieldProcessor for armv7 and aarch64

Doug Semler posted a comment on discussion Open Discussion

i think you should have made that left turn at Albuquerque...this is for development of gcc compatibility for windows

Georg Michel created ticket #873

scanf bug concerning char size

Chaim Rowe posted a comment on discussion Open Discussion

I'm doint the coding project on my software. I want to develop a systom to run the welding tools automatically.