Provision GNU MP on Windows using vcpkg

.github/workflows/d.yml

@@ -14,12 +14,12 @@ permissions:
   contents: read
 
 jobs:
-  test:
-    name: Build and Test
+  test-ubuntu:
+    name: Build and Test on Ubuntu
     strategy:
       fail-fast: false
       matrix:
-        os: [ubuntu-latest] # TODO: provision gmp.lib using https://github.com/marketplace/actions/run-vcpkg and then add ‘windows-latest’ to list of os
+        os: [ubuntu-latest]
         dc:
         - dmd-latest
         - ldc-latest
@@ -37,3 +37,28 @@ jobs:
       run: |
         dub build
         dub test
+  test-windows:
+    name: Build and Test on Windows
+    strategy:
+      fail-fast: false
+      matrix:
+        os: [windows-latest] # TODO: provision gmp.lib using https://github.com/marketplace/actions/run-vcpkg and then add ‘windows-latest’ to list of os
+        dc:
+        - dmd-latest
+        - ldc-latest
+    runs-on: ${{ matrix.os }}
+    steps:
+    - uses: lukka/run-vcpkg@v10
+      with:
+        vcpkgGitCommitId: "9bf374fb6d99f8973ec8781d3b41ffac2defee63"
+    - uses: actions/checkout@v3
+    - uses: dlang-community/[email protected]
+      with:
+        compiler: ${{ matrix.dc }}
+    - name: 'Provision dependencies via vcpkg'
+      run: |
+        vcpkg install gmp
+    - name: 'Build & Test'
+      run: |
+        dub build
+        dub test

src/gmp/f.d

@@ -2,5 +2,3 @@
 module gmp.f;
 
 import gmp.z;
-
-pragma(lib, "gmp");

src/gmp/package.d

@@ -5,5 +5,3 @@ module gmp;
 public import gmp.z;
 public import gmp.q;
 public import gmp.f;
-
-pragma(lib, "gmp");

src/gmp/q.d

@@ -686,5 +686,3 @@ package extern(C) pragma(inline, false)
 	void __gmpq_abs (mpq_ptr, mpq_srcptr);
 	void __gmpq_inv (mpq_ptr, mpq_srcptr);
 }
-
-pragma(lib, "gmp");

src/gmp/z.d

@@ -3961,5 +3961,4 @@ package extern(C) pragma(inline, false)
 	int __gmpz_divisible_ui_p(mpz_srcptr, ulong);
 }
 
-pragma(lib, "gmp");
 pragma(lib, "c");				// needed by `malloc` and `free`