diff -up libsqlite3-sys-0.23.1/build.rs.orig libsqlite3-sys-0.23.1/build.rs
--- libsqlite3-sys-0.23.1/build.rs.orig	1973-11-29 22:33:09.000000000 +0100
+++ libsqlite3-sys-0.23.1/build.rs	2021-11-12 01:46:07.337024842 +0100
@@ -423,6 +423,7 @@ mod build_linked {
             return HeaderLocation::FromEnvironment;
         }
 
+        #[cfg(all(feature = "vcpkg", target_env = "msvc"))]
         if let Some(header) = try_vcpkg() {
             return header;
         }
@@ -450,7 +451,8 @@ mod build_linked {
             }
         }
     }
-
+    
+    #[cfg(all(feature = "vcpkg", target_env = "msvc"))]
     fn try_vcpkg() -> Option<HeaderLocation> {
         if cfg!(feature = "vcpkg") && is_compiler("msvc") {
             // See if vcpkg can find it.