Guidelines and HOWTOs/Build from source/Windows: Difference between revisions

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''emerge'' is a tool to build the KDE sources and its third-party requirements on MS Windows. It is the '''easy''' way to build KDE on MS Windows.
''Craft'' is a tool to build the sources and its third-party requirements. It is the '''easy''' way to build software.
 
== Setting up craft ==
=== Installing python ===
While Craft is capable of installing an embedded Python version sufficient for most packages, we recommend a full installation of Python. The current version is 3.7. [https://www.python.org/downloads/ Download Python 3.6+]
 
Note that some packages may still depend on Python2.7, so if you see following error make sure to install it and update CraftSettings.ini file:
 
    DEBUG Craft was unable to locate: python2.7, in None
    CRITICAL Please have a look on C:\CraftRoot\etc\CraftSettings.ini and make sure that
        [Paths]
        PYTHON27
    Points to a valid Python installation.
 
 
 
=== Setting up a powershell ===
Powershell is required to be at least version 5.0.
If you're running Windows 10 you most probably won't need to update Powershell.
 
You can check the version by invocating <tt>$PSVersionTable.PSVersion</tt> in a Powershell terminal.
 
In case you need a newer one, we recommend
[https://docs.microsoft.com/en-us/powershell/scripting/install/installing-powershell-core-on-windows?view=powershell-6 Powershell Core].
 
The latest version of the standard powershell can be found [https://www.microsoft.com/en-us/download/details.aspx?id=50395 here].


== Setting up emerge ==
=== Setting up a compiler ===
=== Setting up a compiler ===
Currently emerge supports both the MinGW and Microsoft Visual Studio (msvc) compiler.
Currently, Craft supports both the MinGW and Microsoft Visual Studio (msvc) compiler.
While MinGW is can be installed by emerge, [https://www.visualstudio.com/ Visual Studio] must be installed independently by the user.
While MinGW can be installed by Craft, [https://www.visualstudio.com/ Visual Studio] must be installed independently by the user.
 
=== Direct X SDK (only for MinGW setups) ===
If you are using the MinGW compiler, in order to compile the Qt5 ''qtbase'' package you will also need to install the [https://www.microsoft.com/en-us/download/details.aspx?id=6812 Microsoft DirectX SDK]. Make sure to open a new command line window after the installation for the environment variables to be set.
 
=== (Optional) Enable development mode ===
Windows 10 supports the creation of symbolic links, but only if the development mode is activated.
Allowing symbolic links allows faster (much faster) extraction of archives.
[https://docs.microsoft.com/en-us/windows/uwp/get-started/enable-your-device-for-development Enable development mode]
 
=== Installing Craft===
# [https://docs.microsoft.com/en-us/powershell/scripting/setup/starting-windows-powershell?view=powershell-6 Start a PowerShell environment] (Do not use PowerShell ISE, it doesn't work very well with python). It might be required to run it [https://docs.microsoft.com/en-us/powershell/scripting/setup/starting-windows-powershell?view=powershell-6#with-administrative-privileges-run-as-administrator as administrator].
# Allow execution of powershell scripts by executing the following command:
#:<pre>Set-ExecutionPolicy -Scope CurrentUser RemoteSigned</pre>
# Install Craft and follow the instructions by executing the following command:
#: <pre>iex ((new-object net.webclient).DownloadString('https://raw.githubusercontent.com/KDE/craft/master/setup/install_craft.ps1'))</pre>
# Consider adding exception for the entire craft root directory to your antivirus' exceptions, otherwise build of some packages can fail (example: build of <code>kde/frameworks/tier2/kdoctools</code> when AVG is used).


=== Direct X SDK ===
In order to compile the Qt5 ''qtbase'' package with MinGW, you will also need to install the [https://www.microsoft.com/en-us/download/details.aspx?id=6812 Microsoft DirectX SDK], make sure to open a new command line window after the installation.


=== Installing Emerge ===
Note: For Microsoft Visual Studio compiler, it's necessary to have VCTOOLSREDISTDIR environment variable pointing to:
* Start a powershell environment as administrator.
"C:\Program Files (x86)\Microsoft Visual Studio\2017\Professional\VC\Redist\MSVC\xx.xx.xxxxx" for MSVS 2017 and
* Allow execution of powershell scripts.
VCINSTALLDIR environment pointing to "C:\Program Files (x86)\Microsoft Visual Studio\2015\Community\VC\" for MSVS 2015.
  Set-ExecutionPolicy RemoteSigned
* Exit the administrator powershell instance.
* Start a powershell environment as a user.
* Install emerge and folow the instructions
iex ((new-object net.webclient).DownloadString('https://raw.githubusercontent.com/KDE/emerge/master/setup/install_emerge.ps1'))


== Using emerge ==
=== Using the stock Qt SDK===
To use emerge you need to start a Powershell window, point that to <tt>KDEROOT\emerge</tt> and run the initalization script. For example:
This will skip all Qt packages and use the official Qt builds instead.
It will work fine for most CMake based recipes but definitely cause problems with QMake based projects.
You will of course also miss all patches we usually apply to Qt.
This is only recommended when you know what you are doing and you won't get support for in our channel.


C:\KDEROOT\emerge\kdeenv.ps1
To activate the SDK mode adapt the [QtSDK] section in your etc/CraftSettings.ini to something like:
    [QtSDK]
    ## Whether to use prebuild Qt binaries.
    Enabled = True
    ## The path to the Qt sdk.
    Path = C:\Qt
    ## The version of Qt.
    Version = 5.9
    ## The compiler version, if you are not sure what to use, have a look at the directory set in QtSDK/Path.
    ## The compiler must be of the same type as General/KDECOMPILER.
    ## If you are using mingw please make sure you have installed the mingw using the Qt installer.
    Compiler = msvc2017_64


This tells emerge about your environment settings (e.g. paths). It will load your configuration from <tt>KDEROOT\etc\kdesettings.ini</tt>. It should not give any error messages, otherwise emerge will not work as expected. The output should look similar to this one (of course with your paths):
== Using Craft ==
To use Craft you need to start a Powershell window, point that to <tt>KDEROOT\craft </tt> and run the initalization script. For example:


  PS C:\kderoot\emerge>.\kdeenv.ps1
  C:\CraftRoot\craft\craftenv.ps1
KDEROOT    : C:\kderoot\emerge
KDECOMPILER : msvc2015
KDESVNDIR  : C:\kderoot\download\svn
KDEGITDIR  : C:\kderoot\download\git
DOWNLOADDIR : C:\kderoot\download
PYTHONPATH  : C:\kderoot\python
PS C:\kderoot\emerge>


=== Installing the base system ===
This tells Craft about your environment settings (e.g. paths). It will load your configuration from <tt>CraftRoot\etc\CraftSettings.ini</tt>. If there are any error messages Craft will not work as expected. The output should look similar to this one (of course with your paths):
You are now ready to start building KDE, it is recommended to do so progressively, relying on emerge to automatically resolve the required dependencies at each set step:


* Enter <tt>emerge qt5</tt>.  This will fetch and install Windows versions of numerous UNIX-like utilities and libraries, then checkout, compile and install Qt. This will take up to several hours.
PS C:\CraftRoot\craft>.\craftenv.ps1
* Enter <tt>emerge frameworks</tt>. This will checkout, compile and install the kde frameworks 5 modules.
  Craft              : C:\CraftRoot
Version            : master
ABI                : windows-msvc2017_64-cl
  Download directory : C:\CraftRoot\download


You will now have successfully installed a base KDE system and can now install other KDE modules as required.
Then [https://community.kde.org/Craft start crafting]


Every time you want to update or install a package, you should first update your emerge checkout (simply run
== Troubleshooting ==
cd C:\kderoot\emerge
git pull
to ensure you are using the latest package recipes.


=== Common emerge commands ===
If craft seems stalled for prolonged period of time, you may want need hit Enter in the Powershell terminal to give it a nudge.
* '''Installing a package and its dependencies''': Simply run <syntaxhighlight lang="text">emerge packagename</syntaxhighlight>
* '''Updating an installed package''': Once you have ''packagename'' built, type <syntaxhighlight lang="text">emerge -i packagename</syntaxhighlight> to update <tt>packagename</tt>.

Revision as of 01:20, 11 May 2020

Craft is a tool to build the sources and its third-party requirements. It is the easy way to build software.

Setting up craft

Installing python

While Craft is capable of installing an embedded Python version sufficient for most packages, we recommend a full installation of Python. The current version is 3.7. Download Python 3.6+

Note that some packages may still depend on Python2.7, so if you see following error make sure to install it and update CraftSettings.ini file:

   DEBUG Craft was unable to locate: python2.7, in None
   CRITICAL Please have a look on C:\CraftRoot\etc\CraftSettings.ini and make sure that
       	[Paths]
       	PYTHON27
   Points to a valid Python installation.


Setting up a powershell

Powershell is required to be at least version 5.0. If you're running Windows 10 you most probably won't need to update Powershell.

You can check the version by invocating $PSVersionTable.PSVersion in a Powershell terminal.

In case you need a newer one, we recommend Powershell Core.

The latest version of the standard powershell can be found here.

Setting up a compiler

Currently, Craft supports both the MinGW and Microsoft Visual Studio (msvc) compiler. While MinGW can be installed by Craft, Visual Studio must be installed independently by the user.

Direct X SDK (only for MinGW setups)

If you are using the MinGW compiler, in order to compile the Qt5 qtbase package you will also need to install the Microsoft DirectX SDK. Make sure to open a new command line window after the installation for the environment variables to be set.

(Optional) Enable development mode

Windows 10 supports the creation of symbolic links, but only if the development mode is activated. Allowing symbolic links allows faster (much faster) extraction of archives. Enable development mode

Installing Craft

  1. Start a PowerShell environment (Do not use PowerShell ISE, it doesn't work very well with python). It might be required to run it as administrator.
  2. Allow execution of powershell scripts by executing the following command:
    Set-ExecutionPolicy -Scope CurrentUser RemoteSigned
  3. Install Craft and follow the instructions by executing the following command:
    iex ((new-object net.webclient).DownloadString('https://raw.githubusercontent.com/KDE/craft/master/setup/install_craft.ps1'))
  4. Consider adding exception for the entire craft root directory to your antivirus' exceptions, otherwise build of some packages can fail (example: build of kde/frameworks/tier2/kdoctools when AVG is used).


Note: For Microsoft Visual Studio compiler, it's necessary to have VCTOOLSREDISTDIR environment variable pointing to: "C:\Program Files (x86)\Microsoft Visual Studio\2017\Professional\VC\Redist\MSVC\xx.xx.xxxxx" for MSVS 2017 and VCINSTALLDIR environment pointing to "C:\Program Files (x86)\Microsoft Visual Studio\2015\Community\VC\" for MSVS 2015.

Using the stock Qt SDK

This will skip all Qt packages and use the official Qt builds instead. It will work fine for most CMake based recipes but definitely cause problems with QMake based projects. You will of course also miss all patches we usually apply to Qt. This is only recommended when you know what you are doing and you won't get support for in our channel.

To activate the SDK mode adapt the [QtSDK] section in your etc/CraftSettings.ini to something like:

   [QtSDK]
   ## Whether to use prebuild Qt binaries.
   Enabled = True
   ## The path to the Qt sdk.
   Path = C:\Qt
   ## The version of Qt.
   Version = 5.9
   ## The compiler version, if you are not sure what to use, have a look at the directory set in QtSDK/Path.
   ## The compiler must be of the same type as General/KDECOMPILER.
   ## If you are using mingw please make sure you have installed the mingw using the Qt installer.
   Compiler = msvc2017_64

Using Craft

To use Craft you need to start a Powershell window, point that to KDEROOT\craft and run the initalization script. For example:

C:\CraftRoot\craft\craftenv.ps1

This tells Craft about your environment settings (e.g. paths). It will load your configuration from CraftRoot\etc\CraftSettings.ini. If there are any error messages Craft will not work as expected. The output should look similar to this one (of course with your paths):

PS C:\CraftRoot\craft>.\craftenv.ps1
Craft               : C:\CraftRoot
Version             : master
ABI                 : windows-msvc2017_64-cl
Download directory  : C:\CraftRoot\download

Then start crafting

Troubleshooting

If craft seems stalled for prolonged period of time, you may want need hit Enter in the Powershell terminal to give it a nudge.