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 5 has been released

v5.0.4: 2018-06-04

  • Fix gcc-8.1.0 compatibility regarding _xgetbv
  • %e printf specifier will now produce at least 2 digits for the exponent.

initial v5 Release: 2016-10-19

  • Fixes to the __mingw_printf family of functions.
  • DirectX updates from Wine.
  • Various updates to support Windows 7 and 10.
  • Various header typo fixes.

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

Martin Storsjö committed [4df4b6]

crt: Build the SEH inline assembly with clang 7

Jacek Caban committed [cbfe5f]

Updated imported headers to current Wine version.

cniggeler posted a comment on ticket #756

Thanks for testing with the latest version!

Zufu Liu posted a comment on ticket #756

With GCC 8.1 Thread model: posix gcc version 8.1.0 (x86_64-posix-seh-rev0, Built by MinGW-W64 project) test756.f90:1:0: program main internal compiler error: in gfc_get_symbol_decl, at fortran/trans-decl.c:1787

cniggeler posted a comment on ticket #756

I can also report the same abort occurs with a different target: character(len=:), target, allocatable :: name6 the difference being allocatable length vs. fixed length.

cniggeler created ticket #756

gfortran internal compiler error

Rafael Kitover posted a comment on ticket #755

This happens with binutils 2.31.1 which fixed the bug you linked to.

Zufu Liu posted a comment on ticket #755

This seems is same with https://sourceforge.net/p/mingw-w64/bugs/747/

Rafael Kitover posted a comment on ticket #755

gcc is 8.2.0 from msys2, wx is from msys2, but this happens with any version of wx in any configuration.

Zufu Liu posted a comment on ticket #755

What's the output of gcc -v command? Which version of WX? How you install it? Using pacman? What the WX build configuration (gcc_dll\mswu\build.cfg)? or options passed to after mingw32-make -f makefile.gcc when build WX?