Clarify instruction for building with vcpkg

Mention VCPKGRS_DYNAMIC environment variable.
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technic93 2019-02-17 12:03:19 +01:00 committed by GitHub
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@ -128,8 +128,12 @@ You can adjust this behavior in a number of ways:
* Installing the sqlite3 development packages will usually be all that is required, but
the build helpers for [pkg-config](https://github.com/alexcrichton/pkg-config-rs)
and [vcpkg](https://github.com/mcgoo/vcpkg-rs) have some additional configuration
options. The default when using vcpkg is to dynamically link. `vcpkg install sqlite3:x64-windows` will install the required library.
options. The default when using vcpkg is to dynamically link,
which must be enabled by setting `VCPKGRS_DYNAMIC=1` environment variable before build.
`vcpkg install sqlite3:x64-windows` will install the required library.
*Note:* to change the way `libsqlite3-sys` is built, you need to run `cargo clean libsqlite3-sys` first.
### Binding generation
We use [bindgen](https://crates.io/crates/bindgen) to generate the Rust