add windows builder

Add windows builder and move to setup-go@v2 as it
supports adding GOPATH/bin to PATH without quirks.

Signed-off-by: Tobias Kohlbau <tobias@kohlbau.de>

.github/workflows/test.yaml

@@ -6,13 +6,13 @@ on:
 
 jobs:
   build:
-    name: Build
+    name: Linux
     runs-on: ubuntu-latest
     steps:
-    - name: Set up Go 1.13
-      uses: actions/setup-go@v1
+    - name: Set up Go 1.14
+      uses: actions/setup-go@v2
       with:
-        go-version: 1.13
+        go-version: '^1.14.2'
       id: go
     - name: Check out code into the Go module directory
       uses: actions/checkout@v2
@@ -21,4 +21,21 @@ jobs:
     - name: Install libpcsc
       run: sudo apt-get install -y libpcsclite-dev pcscd pcsc-tools
     - name: Test
-      run: "PATH=$PATH:$( go env GOPATH )/bin make test"
+      run: "make test"
+  build-windows:
+    name: Windows
+    runs-on: windows-latest
+    steps:
+    - name: Set up Go 1.14
+      uses: actions/setup-go@v2
+      with:
+        go-version: '^1.14.2'
+      id: go
+    - name: Check out code into the Go module directory
+      uses: actions/checkout@v2
+    - name: Install golint
+      run: go get -u golang.org/x/lint/golint
+    - name: Test
+      run: "make build"
+      env:
+        CGO_ENABLED: 0

Makefile

@@ -1,4 +1,11 @@
 .PHONY: test
-test:
+test: lint
 	go test -v ./...
+
+.PHONY: lint
+lint:
 	golint -set_exit_status ./...
+
+.PHONY: build
+build: lint
+	go build ./...

piv/pcsc_unix.go

@@ -12,6 +12,8 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
+// +build darwin linux
+
 package piv
 
 // https://ludovicrousseau.blogspot.com/2010/04/pcsc-sample-in-c.html