How to speed up Qt Windows Vc Build: Difference between revisions

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== Using /MP[processMax] option ==
== Using /MP[processMax] option ==


More information about /MP[processMax] option "here":http://msdn.microsoft.com/en-us/library/bb385193.aspx. Just add this flag to your spec file (''%QIDIR%/mkspecs/win32-msvc*/qmake.conf'').
More information about /MP[processMax] option [http://msdn.microsoft.com/en-us/library/bb385193.aspx here]. Just add this flag to your spec file (''%QIDIR%/mkspecs/win32-msvc*/qmake.conf'').


''processMax'' argument:<br />* (Optional) The maximum number of processes that the compiler can create.<br />* The processMax argument must range from 1 through 65536. Otherwise, the compiler issues warning message D9014, ignores the processMax argument, and assumes the maximum number of processes is 1.<br />* If you omit the processMax argument, the compiler retrieves the number of effective processors on your computer from the operating system, and creates a process for each processor.
''processMax'' argument:
* (Optional) The maximum number of processes that the compiler can create.
* The processMax argument must range from 1 through 65536. Otherwise, the compiler issues warning message D9014, ignores the processMax argument, and assumes the maximum number of processes is 1.
* If you omit the processMax argument, the compiler retrieves the number of effective processors on your computer from the operating system, and creates a process for each processor.


Example: /MP2 (for dual core), /MP4 (for quad core)…
Example: /MP2 (for dual core), /MP4 (for quad core)…
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== Using jom ==
== Using jom ==


In linux we do speed up with make -j4 or something like this. There is similar tool developed called jom, it can be downloaded from git &quot;here&amp;quot;:http://qt.gitorious.org/qt-labs/jom.
In linux we do speed up with make -j4 or something like this. There is similar tool developed called jom, it can be downloaded from git [http://qt.gitorious.org/qt-labs/jom here].
 
See also &quot;jom's wiki page&amp;quot;:jom
 
Precompiled packages can be found &quot;here&amp;quot;:http://get.qt.nokia.com/jom/.


The original announcement of jom can be found &quot;here&amp;quot;:http://labs.qt.nokia.com/2009/03/27/speeding-up-visual-c-qt-builds/:
See also [[Jom]].

Latest revision as of 19:39, 28 June 2015

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Using /MP[processMax] option

More information about /MP[processMax] option here. Just add this flag to your spec file (%QIDIR%/mkspecs/win32-msvc*/qmake.conf).

processMax argument:

  • (Optional) The maximum number of processes that the compiler can create.
  • The processMax argument must range from 1 through 65536. Otherwise, the compiler issues warning message D9014, ignores the processMax argument, and assumes the maximum number of processes is 1.
  • If you omit the processMax argument, the compiler retrieves the number of effective processors on your computer from the operating system, and creates a process for each processor.

Example: /MP2 (for dual core), /MP4 (for quad core)…

Using jom

In linux we do speed up with make -j4 or something like this. There is similar tool developed called jom, it can be downloaded from git here.

See also Jom.

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