Sonic Visualiser

h1. Building SV v3.0 installers on Windows

Version 3.0 of Sonic Visualiser now has a 64-bit version for Windows. The 32-bit version is also still supported.

 * The *64-bit version* is built using Qt Creator with the *Microsoft Visual C++ compiler*. Install 64-bit Microsoft Visual Studio 2015 Community Edition and Qt 5.7 (or latest 5.x).

 * The *32-bit version* is built using Qt Creator with the *MinGW compiler*. Install Qt 5.7 (or latest 5.x) with Qt Creator and ensure that the 32-bit MinGW option is available.

 * The official 64-bit installer also includes some helper binaries from the 32-bit build, enabling it to use 32-bit Vamp plugins as well as 64-bit ones. So to make a 64-bit installer, we actually have to complete both builds.

In both cases the dependent libraries we use are found in the @sv-dependency-builds@ subrepo which is now checked out as a matter of course with the SV repo. There should be no other external dependencies besides Qt and the runtime libraries it needs.

h2. Which SV branch to use

Currently 3.0 release preparation is happening in the @3.0-integration@ branch, but when 3.0 is actually released, it will be merged to the @default@ branch.

h2. 32-bit build and installer

This process is similar to that introduced in v2.1 (see [[here|WindowsBuild21]]).