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

Doug Semler posted a comment on ticket #153

rpath is not used on windows. DLLs are loaded as described https://docs.microsoft.com/en-us/windows/win32/dlls/dynamic-link-library-search-order

Jacek Caban committed [06bc95]

thumbcache.idl: import from wine

Didier Castellacci created ticket #153

Compilation problem with -Wl, -rpath,

David Mathog created ticket #824

_lock_file broken?

Jacek Caban committed [22333a]

dxgidebug.idl: Import from wine.

Jacek Caban committed [f701c4]

headers: Update imported headers to Wine 5.0-rc4.

Jacek Caban committed [d0de75]

include: Move headers from direct-x/include/ to include/.

Doug Semler posted a comment on ticket #815

This is a bug in gcc's compiler it seems. It is reproducable on a linux cross compiler from GNU Fortran (GCC) 8.3.0 20190222 (Fedora MinGW 8.3.0-2.fc30) Please submit a bug report as instructed at https://gcc.gnu.org/bugs/ Side note, we really need to redirect internal compiler errors to the gcc site on that url page

Markus Böck created ticket #823

access with mode X_OK returning errno EINVAL when mingw is using ucrt

Scott Michel created ticket #152

New compiler builds past 8.1.0?