add a windows CI target

Author: dginev

.github/workflows/CI.yml

@@ -1,6 +1,6 @@
 on: [push, pull_request]
 
-name: CI
+name: CI Linux
 
 jobs:
   test:
@@ -58,4 +58,4 @@ jobs:
         with:
           command: test
         env:
-          LD_LIBRARY_PATH: /usr/local/lib
+          LD_LIBRARY_PATH: /usr/local/lib

.github/workflows/windows.yml

@@ -0,0 +1,28 @@
+on: [push, pull_request]
+
+name: CI Windows
+
+jobs:
+  test-default-windows:
+    name: Windows default
+    runs-on: windows-latest
+    env: 
+      VCPKGRS_DYNAMIC: 1
+      VCPKG_DEFAULT_TRIPLET: x64-windows
+      VCPKG_ROOT: C:\vcpkg
+    steps:
+      - name: Setup vcpkg libxml2 Cache
+        uses: actions/cache@v4
+        id: vcpkg-cache
+        with:
+          path: C:\vcpkg
+          key: vcpkg-libxml2
+      - name: Install libxml2 with vcpkg
+        run: |
+          vcpkg install libxml2
+          vcpkg integrate install
+      - uses: actions/checkout@v2
+      - name: run tests
+        uses: actions-rs/cargo@v1
+        with:
+          command: test

build.rs

@@ -51,10 +51,12 @@ fn find_libxml2() -> Option<ProbedLib> {
       })
     }
 
-    #[cfg(windows)]
+    #[cfg(target_family = "windows")]
     {
-      if let Some(meta) =  vcpkg_dep::find() {
+      if let Some(meta) =  vcpkg_dep::vcpkg_find_libxml2() {
         return Some(meta);
+      } else {
+        eprintln!("vcpkg did not succeed in finding libxml2.");
       }
     }
 
@@ -110,7 +112,7 @@ fn main() {
 #[cfg(target_family = "windows")]
 mod vcpkg_dep {
   use crate::ProbedLib;
-  pub fn find() -> Option<ProbedLib> {
+  pub fn vcpkg_find_libxml2() -> Option<ProbedLib> {
     if let Ok(metadata) = vcpkg::find_package("libxml2") {
       Some(ProbedLib { version: vcpkg_version(), include_paths: metadata.include_paths })
     } else {