vcpkg (https://github.com/Microsoft/vcpkg) is package manager for Windows. Integration is provided out of the box for MSVS IDE and cmake based tool chains. Adapt LibreOffice build tool chain to detect and consume the headers and the libraries from vcpkg installation directory. The goal is to make `--with-system-libs` configuration option work like on other sane platfforms.
What's the use case for this? We need to allow to build with system packages on Linux because distribution packagers want/need it. But there are no 'distributions' for Windows and the official packages have to use bundled libraries anyway, so this seems just like adding needless complexity... Also note that we explicitly disallow the use of package managers (and libraries installed using them) on OS X.
(In reply to David Tardon from comment #1) > What's the use case for this? The intention was to improve the build performance. But I can see how this would complicate the build implementation.