You will need to be running a 64-bit version of Windows in order to build Thunderbird. To check this in Windows 10, open the start menu and click on the gear icon on the left-hand side of the menu. This will open up the "settings" window. Click on the "System" option and then scroll down to "About". Click on the "About" option and on the new screen next to "System Type" you should see: "64-bit operating system"
In order to get the necessary libraries in order to build Thunderbird, you will need to install Visual Studio - an IDE from Microsoft. Download the free community edition here.
During installation make sure the following workloads are checked:
"Desktop development with C++"
"Game development with C++"
Finally, download the MozillaBuild Package from Mozilla. Accept the default settings, in particular the default installation directory:
c:\mozilla-build\. On some versions of Windows an error dialog will give you the option to ‘reinstall with the correct settings’ - you should agree and proceed.
Once you have run start-shell.bat, you will need to grab the source code if you haven't already.
Get the latest Mozilla source code from Mozilla's
mozilla-central Mercurial code repository, and check it out into a local directory
source (or however you want to call it). Then, get the latest Thunderbird source code from Mozilla's
comm-central Mercurial code repository. It now needs to be placed inside the Mozilla source code, in a directory named
comm/ (this is inverse from Thunderbird 59 and earlier):
hg clone https://hg.mozilla.org/mozilla-central source/cd source/hg clone https://hg.mozilla.org/comm-central comm/
source directory run the following command to get additional dependencies needed to install Thunderbird:
You will be presented with the following options:
Please choose the version of Firefox you want to build:1. Firefox for Desktop Artifact Mode2. Firefox for Desktop3. GeckoView/Firefox for Android Artifact Mode4. GeckoView/Firefox for Android
Please choose option 2 to proceed with a successful build.
This action will install all the remaining libraries and dependencies necessary to build Thunderbird locally.
Now that you have the prerequisites for Windows, make sure you have the source code via the commands on the Getting Started page:
Then you can follow the instructions on the Building Thunderbird page: