View source for MinGW

'''English''' [[MinGW Bulgarian|Български]]

=MinGW=

MinGW is a free and open source Windows port of the <span class="caps">GCC</span> compiler and related tools. Qt supports MinGW as a platform on Windows in addition to Visual Studio compiler by Microsoft. However, it can also be used as a cross-compiler e.g. on Unix (currently not officially supported).

[[Qt-Creator|Qt Creator]] supports compiling with a MinGW toolchain out of the box.

=MinGW distributions and versions=

There are actually different MinGW toolchains and packages available:

[http://www.mingw.org MinGW.org] ''[mingw.org]'' is the original project. The latest version gcc 4.7.2. It only compiles for 32 bit binaries.

[http://mingw-w64.sourceforge.net MinGW-w64] ''[mingw-w64.sourceforge.net]'' is a fork with the original aim to also support generation of 64 bit binaries. By now it also supports a much larger part of the Win32 <span class="caps">API</span>. The MinGW-w64 project does host several different binary packages, done by different people.

There are binary installers targetting MinGW for both Qt 4 and Qt 5. Up to Qt 4.8.6, Qt 4 ones are built with a MinGW.org toolchain using gcc 4.4. Newer Qt 4.8 binary packages ship with a mingw-w64 based toolchain. For Qt 5, a newer MinGW-w64 toolchain is actually required.

=Toolchains used in Qt binary packages=

{| class="infotable line"
|- style="background: #009900"
! Qt Version
! MinGW toolchain
|-
| – Qt 4.8.5
|
The binary packages were compiled mingw.org gcc 4.4 toolchain that is unfortunately not officially provided anymore. See also [http://forum.qt.io/viewthread/21079 this forum thread] ''[qt.io]'' .
|- style="background: #ddd"
| Qt 4.8.6
|
[http://sourceforge.net/projects/mingw-w64/files/Toolchains mingw-builds i686-4.8.2-release-posix-dwarf-rt_v3-rev3] ''[sourceforge.net]'' targetting Win32/Personal Builds/mingw-builds/4.8.2/threads-posix/dwarf/i686-4.8.2-release-posix-dwarf-rt_v3-rev3.7z/download
|-
| Qt 5.0
|
[http://sourceforge.net/projects/mingwbuilds/files/host-windows/releases/4.7.2/32-bit/threads-posix/sjlj/x32-4.7.2-release-posix-sjlj-rev8.7z/download mingw-builds x32-4.7.2-release-posix-sjlj-rev8] ''[sourceforge.net]''
|- style="background: #ddd"
| Qt 5.1
|
[http://sourceforge.net/projects/mingwbuilds/files/host-windows/releases/4.8.0/32-bit/threads-posix/dwarf/x32-4.8.0-release-posix-dwarf-rev2.7z/download mingw-builds x32-4.8.0-release-posix-dwarf-rev2] ''[sourceforge.net]''
|-
| Qt 5.2, Qt 5.3
|
[http://sourceforge.net/projects/mingw-w64/files/Toolchains mingw-builds i686-4.8.2-release-posix-dwarf-rt_v3-rev3] ''[sourceforge.net]'' targetting Win32/Personal Builds/mingw-builds/4.8.2/threads-posix/dwarf/i686-4.8.2-release-posix-dwarf-rt_v3-rev3.7z/download
|- style="background: #ddd"
| Qt 5.4
|
[http://sourceforge.net/projects/mingw-w64/files/Toolchains mingw-builds i686-4.9.1-release-posix-dwarf-rt_v3-rev2] ''[sourceforge.net]'' targetting Win32/Personal Builds/mingw-builds/4.9.1/threads-posix/dwarf/i686-4.9.1-release-posix-dwarf-rt_v3-rev2.7z/download
|}

=Common problems=

===Link error ‘Undefined reference to _Unwind_Resume’===

This error occurs if object files / libraries being linked are compiled with different versions of mingw. The following steps can fix a problem:

# Execute <code>mingw32-make distclean</code> in order to remove all object files that was compiled with different mings versions.

<sup>1</sup> [http://www.mingw.org/wiki/LibraryPathHOWTO Mingw wiki about library search problems] ''[mingw.org]''

===Categories:===

* [[:Category:Tools|Tools]]