CI: Use vcpkg's CMake integration to install dependencies.

Author: martinling

.github/workflows/build.yml

@@ -41,7 +41,6 @@ jobs:
         include:
           - sys: {os: 'windows', shell: 'pwsh'}
             cmake_args: >-
-              -DCMAKE_PREFIX_PATH=C:/vcpkg/installed/x64-windows
               -DCMAKE_TOOLCHAIN_FILE=C:/vcpkg/scripts/buildsystems/vcpkg.cmake
               --install-prefix=$env:GITHUB_WORKSPACE/install
           - sys: {os: 'windows', shell: 'msys2'}
@@ -75,10 +74,6 @@ jobs:
         sudo apt install libfftw3-dev libusb-1.0-0-dev
       if: matrix.sys.os == 'ubuntu'
 
-    - name: Install dependencies (Windows)
-      run: vcpkg install --triplet=x64-windows libusb fftw3 pthreads
-      if: matrix.sys.os == 'windows' && matrix.sys.shell != 'msys2'
-
     - name: Setup MSYS (Windows)
       if: matrix.sys.os == 'windows' && matrix.sys.shell == 'msys2'
       uses: msys2/setup-msys2@v2

host/libhackrf/vcpkg.json

@@ -0,0 +1,3 @@
+{
+  "dependencies": ["libusb", "pthreads"]
+}

host/vcpkg.json

@@ -0,0 +1,3 @@
+{
+  "dependencies": ["libusb", "fftw3", "pthreads"]
+}