Difference between revisions of "Documentation/Nightly/Developers/Build Instructions/Prerequisites/Qt"

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(Add MSVC2012 with QT 4.8.6 building instructions)
 
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* To use QtCreator and the Slicer designer plugins, a possible option is to build QtCreator against the installed Qt libraries. See [http://slicer-devel.65872.n3.nabble.com/Using-Qt-Creator-with-Slicer4-On-Mac-OS-X-Multiple-Qt-libs-loaded-tp4026660p4026690.html discussion on the mailing list].
 
* To use QtCreator and the Slicer designer plugins, a possible option is to build QtCreator against the installed Qt libraries. See [http://slicer-devel.65872.n3.nabble.com/Using-Qt-Creator-with-Slicer4-On-Mac-OS-X-Multiple-Qt-libs-loaded-tp4026660p4026690.html discussion on the mailing list].
  
== Windows  ==
+
=== Mac with Homebrew ===
  
=== Debug (32 and 64-bit) or Release (64-bit) ===
+
As an alternative to the binary, you can install QT 4.8.7 with homebrew on mac 10.12:
 
+
<pre>
* Normally you should plan to build Qt from source to have complete control over the process. See [https://github.com/jcfr/qt-easy-build one-liner build command] or more detailed [[#Build_instructions]]
+
brew tap cartr/qt4
 
+
brew tap-pin cartr/qt4
* You may find that the '''unsigned''' binary downloads from this site are usable: http://sourceforge.net/projects/qtx64/files/qt-x64/4.8.5/msvc2008/
+
brew install qt@4
 
+
brew install qt-webkit@2.3
* '''Details''': Using the Qt Designer on Windows requires that the Slicer plugins are [http://doc.trolltech.com/4.6/deployment-plugins.html#debugging-plugins|compiled in the same mode as Qt]. If Qt was compiled in Release mode (default), Slicer would have to be compiled in Release mode as well. However if Qt is compiled in Debug mode only, Slicer has to be compiled in Debug too. When Qt is in "Release and Debug" mode only the Release version of Designer.exe is generated, Slicer would have to be compiled in Release. So for developers, the <b>Debug mode is recommended</b>, this is why we detail the compilation of Qt below.
+
</pre>
 
 
=== Release (32-bit) ===
 
 
 
* Using [[#Download_links|binary]] works great for 32-bit Release build of Slicer. See [[#Download_links]] and [[#Installation_instruction]]
 
  
 +
== Windows  ==
 +
* Normally you should plan to build Qt from source to have complete control over the process. See [https://github.com/jcfr/qt-easy-build one-liner build command] or more detailed [[#Build_instructions]].
 +
** You may find that the binary downloads are usable for older Visual Studio versions (but not for the currently official Visual Studio 2013 version): [[#Download_links|binary]]. If you use .7z varaints extract them in the default location C:\Qt\ otherwise that installation will not be properly configured for use with CMake.
 +
* Debug/release mode builds: The recommendation for developers is to build Slicer and Qt at least in Debug mode. To be able to test real-world performance, developers should also build Qt and Slicer in release mode (in a separate build tree), because some algorithms are 10x or more faster in release mode.
 +
** Rationale: Using the Qt Designer on Windows requires that the Slicer plugins are [http://doc.trolltech.com/4.6/deployment-plugins.html#debugging-plugins|compiled in the same mode as Qt]. If Qt was compiled in Release mode (default), Slicer would have to be compiled in Release mode as well. However if Qt is compiled in Debug mode only, Slicer has to be compiled in Debug too. When Qt is in "Release and Debug" mode only the Release version of Designer.exe is generated, Slicer would have to be compiled in Release to be able to use the Qt Designer.
 +
* 32/64-bit builds: When using 32-bit builds, the available memory space is so limited that the application would run out of memory and crash even working with average-sized data sets. Therefore 64-bit build is recommended for general use. 32-bit applications should only be used when running 3D Slicer on 32-bit operating system (such as a tablet with 32-bit Windows), working with limited-size problems (simple surfaces, image slices, low-resolution image volumes).
  
 
<br><br><br><br>
 
<br><br><br><br>
Line 42: Line 44:
 
!colspan="1" rowspan="2"|Linux
 
!colspan="1" rowspan="2"|Linux
 
!colspan="2"|Mac
 
!colspan="2"|Mac
!colspan="2"|Windows
+
!colspan="3"|Windows
 
|- bgcolor="#FFFFCC"
 
|- bgcolor="#FFFFCC"
 
!colspan="1"|SnowLeopard
 
!colspan="1"|SnowLeopard
Line 48: Line 50:
 
!colspan="1"|VS2008
 
!colspan="1"|VS2008
 
!colspan="1"|VS2010
 
!colspan="1"|VS2010
 +
!colspan="1"|VS2013
 
|- bgcolor="#FFFFCC"
 
|- bgcolor="#FFFFCC"
 +
!|64bits
 
!|64bits
 
!|64bits
 
!|64bits
 
!|64bits
Line 61: Line 65:
 
|align="center" colspan="1"| [http://download.qt-project.org/official_releases/qt/4.8/4.8.6/qt-everywhere-opensource-src-4.8.6.zip 4.8.6]
 
|align="center" colspan="1"| [http://download.qt-project.org/official_releases/qt/4.8/4.8.6/qt-everywhere-opensource-src-4.8.6.zip 4.8.6]
 
|align="center" colspan="1"| [http://download.qt-project.org/official_releases/qt/4.8/4.8.6/qt-everywhere-opensource-src-4.8.6.zip 4.8.6]
 
|align="center" colspan="1"| [http://download.qt-project.org/official_releases/qt/4.8/4.8.6/qt-everywhere-opensource-src-4.8.6.zip 4.8.6]
 +
|align="center" colspan="1"| [http://download.qt.io/official_releases/qt/4.8/4.8.7/qt-everywhere-opensource-src-4.8.7.zip 4.8.7]
 
|-
 
|-
 
! bgcolor="#FFFFCC" | Qt binary link
 
! bgcolor="#FFFFCC" | Qt binary link
Line 67: Line 72:
 
|align="center" colspan="1"| [http://download.qt-project.org/official_releases/qt/4.8/4.8.6/qt-opensource-mac-4.8.6-1.dmg 4.8.6] <br> [http://download.qt-project.org/official_releases/qt/4.8/4.8.6/qt-opensource-mac-4.8.6-1-debug-libs.dmg 4.8.6 (optional: debug libs)]  
 
|align="center" colspan="1"| [http://download.qt-project.org/official_releases/qt/4.8/4.8.6/qt-opensource-mac-4.8.6-1.dmg 4.8.6] <br> [http://download.qt-project.org/official_releases/qt/4.8/4.8.6/qt-opensource-mac-4.8.6-1-debug-libs.dmg 4.8.6 (optional: debug libs)]  
  
|align="center" colspan="1"| [http://sourceforge.net/projects/qtx64/files/qt-x64/4.8.5/msvc2008/ 4.8.5 (unsigned installer)]
+
|align="center" colspan="1"| [http://sourceforge.net/projects/qt64ng/files/qt/x86-64/4.8.6/msvc2008/qt-4.8.6-x64-msvc2008.exe/download 4.8.6 (unsigned installer)]
|align="center" colspan="1"| [http://sourceforge.net/projects/qtx64/files/qt-x64/4.8.5/msvc2010/ 4.8.5 (unsigned installer)]
+
|align="center" colspan="1"| [http://sourceforge.net/projects/qt64ng/files/qt/x86-64/4.8.6/msvc2010/qt-4.8.6-x64-msvc2010.exe/download 4.8.6 (unsigned installer)]
 
|}
 
|}
  
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=== Mac ===
 
=== Mac ===
* Problem building Qt on MacOSX 10.9. See https://bugreports.qt-project.org/browse/QTBUG-32237
+
* Problem building Qt on MacOSX 10.9. See https://bugreports.qt.io/browse/QTBUG-32237. Patch: https://gist.github.com/ejtttje/7163a9ced64f12ae9444.
 
<!--
 
<!--
 
* '''Qt 4.6''': hard to compile - TBD: Be more specific
 
* '''Qt 4.6''': hard to compile - TBD: Be more specific
Line 185: Line 190:
  
 
== Windows ==
 
== Windows ==
 +
For current official version (using VS2013), use [https://github.com/jcfr/qt-easy-build one-liner build command].
  
* Use a windows extracter to unzip the [[Documentation/{{documentation/version}}/Developers/Build_Instructions/Prerequisites/Qt#Download_links|Qt archive]], don't use cygwin unzip it.
+
=== Manual build instructions for older (not officially supported) configurations ===
  
=== Qt 4.7.4 / VS2008 ===
+
Use a windows extracter to unzip the [[Documentation/{{documentation/version}}/Developers/Build_Instructions/Prerequisites/Qt#Download_links|Qt archive]] (don't use cygwin unzip it), and follow the instructions below.
 +
 
 +
==== Qt 4.7.4 / VS2008 ====
  
 
* Rename the folder into for example <code>qt-4.7.4-64-vs2008-rel</code>.  
 
* Rename the folder into for example <code>qt-4.7.4-64-vs2008-rel</code>.  
Line 215: Line 223:
 
** Note: If you encounter the following error <code>api\qscriptextensionplugin.h(43): Error: Undefined interface,</code>, delete the files <i>\src\script\tmp\moc\debug_shared\mocinclude.tmp</i> and <i>\src\script\tmp\moc\release_shared\mocinclude.tmp</i> and restart nmake. For more info, please see [http://bugreports.qt.nokia.com/browse/QTBUG-6470 QTBug 6470]].
 
** Note: If you encounter the following error <code>api\qscriptextensionplugin.h(43): Error: Undefined interface,</code>, delete the files <i>\src\script\tmp\moc\debug_shared\mocinclude.tmp</i> and <i>\src\script\tmp\moc\release_shared\mocinclude.tmp</i> and restart nmake. For more info, please see [http://bugreports.qt.nokia.com/browse/QTBUG-6470 QTBug 6470]].
  
=== Qt 4.8.5 / VS2010 ===
+
==== Qt 4.8.5 / VS2010 ====
  
 
* Rename the folder into for example <code>qt-4.8.5-64-vs2010-rel</code>.  
 
* Rename the folder into for example <code>qt-4.8.5-64-vs2010-rel</code>.  
Line 249: Line 257:
 
** Note: If you encounter the following error <code>api\qscriptextensionplugin.h(43): Error: Undefined interface,</code>, delete the files <i>\src\script\tmp\moc\debug_shared\mocinclude.tmp</i> and <i>\src\script\tmp\moc\release_shared\mocinclude.tmp</i> and restart jom. For more info, please see [http://bugreports.qt.nokia.com/browse/QTBUG-6470 QTBug 6470]].
 
** Note: If you encounter the following error <code>api\qscriptextensionplugin.h(43): Error: Undefined interface,</code>, delete the files <i>\src\script\tmp\moc\debug_shared\mocinclude.tmp</i> and <i>\src\script\tmp\moc\release_shared\mocinclude.tmp</i> and restart jom. For more info, please see [http://bugreports.qt.nokia.com/browse/QTBUG-6470 QTBug 6470]].
  
=== Qt 4.8.6 / VS2012 ===
+
==== Qt 4.8.6 / VS2012 ====
 +
 
 +
* Make sure your Visual Studio 2012 is patched with the latest patch (e.g. [http://www.microsoft.com/en-us/download/confirmation.aspx?id=39305 patch 4]).
 +
 
  
* Rename the folder into for example <code>qt-4.8.6-64-vs2012-rel</code>.  
+
* Download the [http://download.qt-project.org/official_releases/qt/4.8/4.8.6/qt-everywhere-opensource-src-4.8.6.zip source archive], extract and rename the folder into for example <code>qt-4.8.6-64-vs2012-rel</code>.  
 
** Note: Each build of Qt should be done it its own folder !
 
** Note: Each build of Qt should be done it its own folder !
 
** Note: A 32 bit debug build would be done in a folder named <code>qt-4.8.6-32-vs2010-deb</code>
 
** Note: A 32 bit debug build would be done in a folder named <code>qt-4.8.6-32-vs2010-deb</code>
  
* Replace the webkit <i>src\3rdparty\webkit\Source\JavaScriptCore\wtf\hashset.h</i> file with this [ https://bitbucket.org/Vertexwahn/bluego/src/56dbe84212222ec6954d8d327a5e443106bcc447/deploy/BlueGo0.0.4/qt4.8.3vs2012patch/HashSet.h?at=default file]
+
* Replace the webkit <i>src\3rdparty\webkit\Source\JavaScriptCore\wtf\hashset.h</i> file with this [https://bitbucket.org/Vertexwahn/bluego/src/56dbe84212222ec6954d8d327a5e443106bcc447/deploy/BlueGo0.0.4/qt4.8.3vs2012patch/HashSet.h?at=default file]
 
+
* For VS2013, replace the MathExtras.h file [http://code.qt.io/cgit/qt/qt.git/commit/src/3rdparty/webkit/Source/JavaScriptCore/wtf/MathExtras.h?id=b05d05fd9ce2aeedfaf805a7ed9007a93c902bc9]
 +
* For VS2015, use the 4.8.7 source [http://download.qt.io/official_releases/qt/4.8/4.8.7/] and apply the patch [https://fami.codefreak.ru/mirrors/qt/unofficial_builds/qt4.8.7-msvc2015/02-fix_build_with_msvc2015-45e8f4ee.diff]
 
* Launch the msvc2012 command prompt <!-- (MSVC12->Tools->Visual Studio 2012 CommandPrompt) (or: launch cmd.exe and run <code>vcvars32.bat</code>) -->
 
* Launch the msvc2012 command prompt <!-- (MSVC12->Tools->Visual Studio 2012 CommandPrompt) (or: launch cmd.exe and run <code>vcvars32.bat</code>) -->
 
** 32-bit build: Start menu -> MSVC12->Visual Studio Tools -> "VS2012 x86 Command Prompt"
 
** 32-bit build: Start menu -> MSVC12->Visual Studio Tools -> "VS2012 x86 Command Prompt"
Line 265: Line 277:
  
  
* If you want openssl support:
+
* If you want openssl support (optional):
 
** Download perl http://strawberryperl.com/ and create a new folder into for example <code>strawberry</code>.
 
** Download perl http://strawberryperl.com/ and create a new folder into for example <code>strawberry</code>.
  
Line 271: Line 283:
 
** For debug: <code>configure.exe -platform win32-msvc2012 -debug -opensource -confirm-license -webkit -nomake examples -nomake demos</code>
 
** For debug: <code>configure.exe -platform win32-msvc2012 -debug -opensource -confirm-license -webkit -nomake examples -nomake demos</code>
 
** For release: <code>configure.exe -platform win32-msvc2012 -release -opensource -confirm-license -webkit -nomake examples -nomake demos</code>
 
** For release: <code>configure.exe -platform win32-msvc2012 -release -opensource -confirm-license -webkit -nomake examples -nomake demos</code>
** Note: <code>win32-msvc2010</code> is used for both 32 and 64-bit.
+
** Note: <code>win32-msvc2012</code> is used for both 32 and 64-bit.
 
** Note: The option <code>-prefix</code> doesn't work on Windows.
 
** Note: The option <code>-prefix</code> doesn't work on Windows.
  

Latest revision as of 23:40, 4 August 2017

Home < Documentation < Nightly < Developers < Build Instructions < Prerequisites < Qt


For the latest Slicer documentation, visit the read-the-docs.


Binary vs build-from-source ?

If you build Slicer on ...

Linux

Mac

  • To use QtCreator and the Slicer designer plugins, a possible option is to build QtCreator against the installed Qt libraries. See discussion on the mailing list.

Mac with Homebrew

As an alternative to the binary, you can install QT 4.8.7 with homebrew on mac 10.12:

brew tap cartr/qt4
brew tap-pin cartr/qt4
brew install qt@4
brew install qt-webkit@2.3

Windows

  • Normally you should plan to build Qt from source to have complete control over the process. See one-liner build command or more detailed #Build_instructions.
    • You may find that the binary downloads are usable for older Visual Studio versions (but not for the currently official Visual Studio 2013 version): binary. If you use .7z varaints extract them in the default location C:\Qt\ otherwise that installation will not be properly configured for use with CMake.
  • Debug/release mode builds: The recommendation for developers is to build Slicer and Qt at least in Debug mode. To be able to test real-world performance, developers should also build Qt and Slicer in release mode (in a separate build tree), because some algorithms are 10x or more faster in release mode.
    • Rationale: Using the Qt Designer on Windows requires that the Slicer plugins are in the same mode as Qt. If Qt was compiled in Release mode (default), Slicer would have to be compiled in Release mode as well. However if Qt is compiled in Debug mode only, Slicer has to be compiled in Debug too. When Qt is in "Release and Debug" mode only the Release version of Designer.exe is generated, Slicer would have to be compiled in Release to be able to use the Qt Designer.
  • 32/64-bit builds: When using 32-bit builds, the available memory space is so limited that the application would run out of memory and crash even working with average-sized data sets. Therefore 64-bit build is recommended for general use. 32-bit applications should only be used when running 3D Slicer on 32-bit operating system (such as a tablet with 32-bit Windows), working with limited-size problems (simple surfaces, image slices, low-resolution image volumes).





Download Qt: Source and Binaries

Download links

The following table list the link allowing to download either the recommended source code or binary of Qt.

Linux Mac Windows
SnowLeopard Lion, Mountain Lion VS2008 VS2010 VS2013
64bits 64bits 64bits 64bits 64bits 64bits
Qt source link 4.8.6 4.7.4 4.8.6 4.8.6 4.8.6 4.8.7
Qt binary link (src or apt-get package) 4.7.4
4.7.4 (optional: debug libs)
4.8.6
4.8.6 (optional: debug libs)
4.8.6 (unsigned installer) 4.8.6 (unsigned installer)


Qt version specific issues

  • Issues for Qt < 4.7.4 are not reported

All

  • NA

Linux

  • NA

Mac

Windows

  • NA

How to change the minimum required version ?

  • This applied only for Slicer < r22466.
  • It's indeed possible to use a different version, just be aware that moving forward in time, things may not work as expected. Even worse Slicer may simply fail to compile.
  • By configuring Slicer using -DSlicer_REQUIRED_QT_VERSION:STRING=4.7.0, you will be able to change the minimum required version.






Build instructions



Linux

See Documentation/Nightly/Developers/Build_Instructions#Linux


Mac

Similar to Linux configuration. Note that -arch x86_64 has been added.

For earlier versions of Xcode and Mac OS X

mkdir qt-everywhere-opensource-build-4.7.4
tar xvfz qt-everywhere-opensource-src-4.7.4.tar.gz
cd qt-everywhere-opensource-src-4.7.4
./configure -prefix ../qt-everywhere-opensource-build-4.7.4 -debug-and-release -opensource -confirm-license -no-qt3support -webkit -arch x86_64 -nomake examples -nomake demos -sdk /Developer/SDKs/MacOSX10.5.sdk
make -j8
make install

On the latest Xcode versions (4.3) and Lion (10.7) the Developer directories have moved. The command is now:

./configure -prefix ../qt-everywhere-opensource-build-4.7.4 -debug-and-release -opensource -confirm-license -no-qt3support -arch x86_64 -nomake examples -nomake demos -webkit -sdk /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.7.sdk
  • Note:
    • If building against SDK 10.6 or 10.7, you will probably get link errors similar to what's described in [1] and [2]. Solution is provided here here.

Windows

For current official version (using VS2013), use one-liner build command.

Manual build instructions for older (not officially supported) configurations

Use a windows extracter to unzip the Qt archive (don't use cygwin unzip it), and follow the instructions below.

Qt 4.7.4 / VS2008

  • Rename the folder into for example qt-4.7.4-64-vs2008-rel.
    • Note: Each build of Qt should be done it its own folder !
    • Note: A 32 bit debug build would be done in a folder named qt-4.7.4-32-vs2008-deb


  • Launch the msvc2008 command prompt
    • 32-bit build: Start menu -> MSVC08->Tools -> "Visual Studio 2008 Command Prompt"
    • 64-bit build: Start menu -> MSVC08->Tools -> "Visual Studio 2008 x64 Win64 Command Prompt"


  • Configure
    • For debug: configure.exe -platform win32-msvc2008 -opensource -confirm-license -debug -webkit -nomake examples -nomake demos
    • For release: configure.exe -platform win32-msvc2008 -opensource -confirm-license -release -webkit -nomake examples -nomake demos
    • Note: win32-msvc2008 is used for both 32 and 64-bit.
    • Note: The option -prefix doesn't work on Windows.
    • Note: According to [3] Qt does not support msvc2008 on windows xp. However, running configure.exe with no -platform argument seems to work. If you run configure with the -platform argument first by mistake, and if configure -clean doesn't work, then you may need to start from a fresh extraction from the .zip archive before running configure.exe again with no -platform, unless you can run nmake with the config clean target.


  • Build using nmake
    • Note: building with webkit support requires that src/3rdparty/webkit/WebCore/tmp/moc/{debug,release}_shared/mocinclude.tmp be removed. else you will get linker errors like QNetworkReplyHandler.obj : error LNK2001: unresolved external symbol "public: virtual struct QMetaObject const * __thiscall WebCore::FormDataIODevice::metaObject(void)const (?metaObject@FormDataIODevice@WebCore@@UBEPBUQMetaObject@@XZ)
    • Note: If you encounter the following error api\qscriptextensionplugin.h(43): Error: Undefined interface,, delete the files \src\script\tmp\moc\debug_shared\mocinclude.tmp and \src\script\tmp\moc\release_shared\mocinclude.tmp and restart nmake. For more info, please see QTBug 6470].

Qt 4.8.5 / VS2010

  • Rename the folder into for example qt-4.8.5-64-vs2010-rel.
    • Note: Each build of Qt should be done it its own folder !
    • Note: A 32 bit debug build would be done in a folder named qt-4.8.5-32-vs2010-deb


  • Launch the msvc2010 command prompt
    • 32-bit build: Start menu -> MSVC10->Tools -> "Visual Studio 2010 Command Prompt"
    • 64-bit build: Start menu -> MSVC10->Tools -> "Visual Studio 2010 x64 Win64 Command Prompt"



  • Download jom and create a new folder into for example jom.
    • Add this new folder into the path (system properties)


  • Configure
    • For debug: configure.exe -platform win32-msvc2010 -debug -opensource -confirm-license -webkit -nomake examples -nomake demos
    • For release: configure.exe -platform win32-msvc2010 -release -opensource -confirm-license -webkit -nomake examples -nomake demos
    • Note: win32-msvc2010 is used for both 32 and 64-bit.
    • Note: The option -prefix doesn't work on Windows.


  • Build using jom -jn
    • Note: n is the number of cores of your CPU, so adapt it.
    • Note: building with webkit support requires that src/3rdparty/webkit/WebCore/tmp/moc/{debug,release}_shared/mocinclude.tmp be removed. else you will get linker errors like QNetworkReplyHandler.obj : error LNK2001: unresolved external symbol "public: virtual struct QMetaObject const * __thiscall WebCore::FormDataIODevice::metaObject(void)const (?metaObject@FormDataIODevice@WebCore@@UBEPBUQMetaObject@@XZ)
    • Note: If you encounter the following error api\qscriptextensionplugin.h(43): Error: Undefined interface,, delete the files \src\script\tmp\moc\debug_shared\mocinclude.tmp and \src\script\tmp\moc\release_shared\mocinclude.tmp and restart jom. For more info, please see QTBug 6470].

Qt 4.8.6 / VS2012

  • Make sure your Visual Studio 2012 is patched with the latest patch (e.g. patch 4).


  • Download the source archive, extract and rename the folder into for example qt-4.8.6-64-vs2012-rel.
    • Note: Each build of Qt should be done it its own folder !
    • Note: A 32 bit debug build would be done in a folder named qt-4.8.6-32-vs2010-deb
  • Replace the webkit src\3rdparty\webkit\Source\JavaScriptCore\wtf\hashset.h file with this file
  • For VS2013, replace the MathExtras.h file [4]
  • For VS2015, use the 4.8.7 source [5] and apply the patch [6]
  • Launch the msvc2012 command prompt
    • 32-bit build: Start menu -> MSVC12->Visual Studio Tools -> "VS2012 x86 Command Prompt"
    • 64-bit build: Start menu -> MSVC12->Visual Studio Tools -> "VS2012 x64 Win64 Command Prompt"


  • If you want openssl support (optional):
  • Configure
    • For debug: configure.exe -platform win32-msvc2012 -debug -opensource -confirm-license -webkit -nomake examples -nomake demos
    • For release: configure.exe -platform win32-msvc2012 -release -opensource -confirm-license -webkit -nomake examples -nomake demos
    • Note: win32-msvc2012 is used for both 32 and 64-bit.
    • Note: The option -prefix doesn't work on Windows.


  • Build using nmake
    • Alternatively you can use jom (much faster)
      • Download jom and create a new folder into for example jom.
      • Add this new folder into the path (system properties)
      • Build using jom -jn
        • Note: n is the number of cores of your CPU, so adapt it.