GCC for Windows 64 & 32 bits

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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 4.0 has been released

  • 32bit ARM thumb software math (Thanks to André Hentschel!).
  • New ftw() support for gcc-5.x support.
  • Experimental printf changes - Ability to print 128bit integers (%I128*) and Decimal Floats (%H, %D), disabled by default. Build the CRT with —-enable-experimental to use.
  • Updated OpenGL 4.5 headers.
  • Better DirectX 11 support.
  • Better Windows 7, 8/8.1 API support.

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

LH_Mouse committed [ff066d]

headers: Import wmsecure.idl from wine

LH_Mouse committed [a2eb3e]

headers: Update to wine master

LH_Mouse committed [cb05e1]

headers: Add some interfaces in mfidl.idl

LH_Mouse committed [403c83]

headers/mfidl: Regenerate .H from .IDL

sevilla.larry posted a comment on discussion Open Discussion

Development Environment Windows 10 x64 CMake 3.21.3 CodeBlocks 20.03 with MinGW 8.1.0 PostgreSQL 13.4.2 libpqxx 7.6.0 Background: I attempted to compile/generate libpqxx using CodeBlocks with MinGW. I set the C++17 flag, since libpqxx needs it. see link: https://github.com/jtv/libpqxx/issues/493 I Build it, but failed. Error msgs: https://pastebin.com/t0CgTWT7 Your site https://www.mingw-w64.org/ mention only C++11. But the site https://hwdong.net/2020/02/28/Configuring-C++17-supported-compiler-on-wnidows-for-CodeBlocks-or-Visual-studio-code/...

Mehdi Chinoune posted a comment on ticket #918


Mehdi Chinoune created ticket #918

MAX_PATH is hard-coded to 260

Martin Storsjö committed [5e7b53]

crt: duplicate query.def in ntquery.def

Martin Storsjö committed [f33e6a]

crt: add libntquery.a import library

Martin Storsjö committed [10d6d4]

crt: Regenerate Makefile.in