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MinGW: Difference between revisions
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There are actually different MinGW toolchains and packages available: | There are actually different MinGW toolchains and packages available: | ||
"MinGW.org":http://www.mingw.org is the original project. The latest version gcc 4.7.2. It only compiles for 32 bit binaries. | |||
"MinGW-w64":http://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 API. 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. | 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. | ||
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= Toolchains used in Qt binary packages = | = Toolchains used in Qt binary packages = | ||
{background:#009900}. |''. Qt Version |''. MinGW toolchain |<br /> | - Qt 4.8.5| The binary packages were compiled mingw.org gcc 4.4 toolchain that is unfortunately not officially provided anymore. See also | {background:#009900}. |''. Qt Version |''. MinGW toolchain |<br /> | - Qt 4.8.5| The binary packages were compiled mingw.org gcc 4.4 toolchain that is unfortunately not officially provided anymore. See also "this forum thread":http://forum.qt.io/viewthread/21079 . |<br /> {background:#ddd}. | Qt 4.8.6 | "mingw-builds i686-4.8.2-release-posix-dwarf-rt_v3-rev3":http://sourceforge.net/projects/mingw-w64/files/Toolchains targetting Win32/Personal Builds/mingw-builds/4.8.2/threads-posix/dwarf/i686-4.8.2-release-posix-dwarf-rt_v3-rev3.7z/download |<br /> | Qt 5.0| "mingw-builds x32-4.7.2-release-posix-sjlj-rev8":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 |<br /> {background:#ddd}. | Qt 5.1| "mingw-builds x32-4.8.0-release-posix-dwarf-rev2":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 |<br /> | Qt 5.2, Qt 5.3| "mingw-builds i686-4.8.2-release-posix-dwarf-rt_v3-rev3":http://sourceforge.net/projects/mingw-w64/files/Toolchains targetting Win32/Personal Builds/mingw-builds/4.8.2/threads-posix/dwarf/i686-4.8.2-release-posix-dwarf-rt_v3-rev3.7z/download |<br /> {background:#ddd}. | Qt 5.4| "mingw-builds i686-4.9.1-release-posix-dwarf-rt_v3-rev2":http://sourceforge.net/projects/mingw-w64/files/Toolchains 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 = | = Common problems = | ||
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=== Link error 'Undefined reference to _Unwind_Resume' === | === 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:<br /># Execute | This error occurs if object files / libraries being linked are compiled with different versions of mingw. The following steps can fix a problem:<br /># Execute <code>mingw32-make distclean</code> in order to remove all object files that was compiled with different mings versions.<br /># Explicitly set library path by setting <code>LIBRARY_PATH</code> environment variable, for example <code>set LIBRARY_PATH=c:010.04\mingw\lib</code>. gcc linker have a very complicated library search algorithm[1] that can result in wrong library being linked (for example, mingw can find installation of strawberry perl in PATH and use it's library). | ||
Revision as of 14:11, 24 February 2015
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MinGW
MinGW is a free and open source Windows port of the GCC 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 supports compiling with a MinGW toolchain out of the box.
MinGW distributions and versions
There are actually different MinGW toolchains and packages available:
"MinGW.org":http://www.mingw.org is the original project. The latest version gcc 4.7.2. It only compiles for 32 bit binaries.
"MinGW-w64":http://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 API. 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
{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 "this forum thread":http://forum.qt.io/viewthread/21079 . |
{background:#ddd}. | Qt 4.8.6 | "mingw-builds i686-4.8.2-release-posix-dwarf-rt_v3-rev3":http://sourceforge.net/projects/mingw-w64/files/Toolchains 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| "mingw-builds x32-4.7.2-release-posix-sjlj-rev8":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 |
{background:#ddd}. | Qt 5.1| "mingw-builds x32-4.8.0-release-posix-dwarf-rev2":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 |
| Qt 5.2, Qt 5.3| "mingw-builds i686-4.8.2-release-posix-dwarf-rt_v3-rev3":http://sourceforge.net/projects/mingw-w64/files/Toolchains targetting Win32/Personal Builds/mingw-builds/4.8.2/threads-posix/dwarf/i686-4.8.2-release-posix-dwarf-rt_v3-rev3.7z/download |
{background:#ddd}. | Qt 5.4| "mingw-builds i686-4.9.1-release-posix-dwarf-rt_v3-rev2":http://sourceforge.net/projects/mingw-w64/files/Toolchains 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
mingw32-make distclean
in order to remove all object files that was compiled with different mings versions.
# Explicitly set library path by setting
LIBRARY_PATH
environment variable, for example
set LIBRARY_PATH=c:010.04\mingw\lib
. gcc linker have a very complicated library search algorithm[1] that can result in wrong library being linked (for example, mingw can find installation of strawberry perl in PATH and use it's library).