Build fixes for CGO

.github/workflows/CI.yml

@@ -1,30 +1,52 @@
+---
+# Github Actions CI
+# -*- compile-command: "yamllint -f parsable CI.yml" -*-
+
 name: CI
 
+# Trigger the workflow on push or pull request
 on:
   push:
-    branches: [master]
+    branches:
+      - '*'
+    tags:
+      - '*'
   pull_request:
+  workflow_dispatch:
 
 jobs:
   run-tests:
     name: Run test cases
-    runs-on: ${{ matrix.os }}
     strategy:
+      fail-fast: false
       matrix:
         os: [ubuntu-latest, macos-latest, windows-latest]
         go: [1.17, 1.16]
         cgo_enabled: [0, 1]
 
+    runs-on: ${{ matrix.os }}
+
     steps:
-      - uses: actions/checkout@v2
+      - name: Checkout
+        uses: actions/checkout@v3
 
       - name: Set up Go
-        uses: actions/setup-go@v2
+        uses: actions/setup-go@v3
         with:
           go-version: ${{ matrix.go }}
+          cache: true
+
+      - name: Print Go version and environment
+        shell: bash
+        run: |
+          printf "Using go at: $(which go)\n"
+          printf "Go version: $(go version)\n"
+          printf "\n\nGo environment:\n\n"
+          go env
+          printf "\n\nSystem environment:\n\n"
+          env
 
       - name: Run tests
         run: go test -v ./...
         env:
-          CGO_ENABLED: ${{ matrix.go }}
-
+          CGO_ENABLED: ${{ matrix.cgo_enabled }}

ieproxy_darwin.go

@@ -1,3 +1,6 @@
+//go:build darwin && cgo
+// +build darwin,cgo
+
 package ieproxy
 
 /*

ieproxy_windows.go

@@ -1,3 +1,6 @@
+//go:build windows && cgo
+// +build windows,cgo
+
 package ieproxy
 
 import (

pac_darwin.go

@@ -1,3 +1,6 @@
+//go:build darwin && cgo
+// +build darwin,cgo
+
 package ieproxy
 
 /*

pac_windows.go

@@ -1,3 +1,6 @@
+//go:build windows && cgo
+// +build windows,cgo
+
 package ieproxy
 
 import (