add dummy files to ensure c source is maintained

v3.3/glfw/build_cgo_hack.go

@@ -0,0 +1,17 @@
+// +build required
+
+package glfw
+
+// this file exists purely to prevent the golang toolchain from stripping
+// away the c source directories and files.
+//
+// how it works:
+//  - every directory which only includes c source files receives a dummy.go file.
+//  - every directory we want to preserve is included here as a _ import.
+//  - this file is given a build to exclude it from the regular build.
+import (
+	// prevent go tooling from stripping out the c source files.
+	_ "github.com/go-gl/glfw/v3.3/glfw/glfw/deps"
+	_ "github.com/go-gl/glfw/v3.3/glfw/glfw/include/GLFW"
+	_ "github.com/go-gl/glfw/v3.3/glfw/glfw/src"
+)

v3.3/glfw/glfw/deps/dummy.go

@@ -0,0 +1,11 @@
+// +build required
+
+// Package dummy prevents go tooling from stripping the c dependencies.
+package dummy
+
+import (
+	// prevent go tooling from stripping out the c source files.
+	_ "github.com/go-gl/glfw/v3.3/glfw/glfw/deps/glad"
+	_ "github.com/go-gl/glfw/v3.3/glfw/glfw/deps/mingw"
+	_ "github.com/go-gl/glfw/v3.3/glfw/glfw/deps/vs2008"
+)

v3.3/glfw/glfw/deps/glad/dummy.go

@@ -0,0 +1,4 @@
+// +build required
+
+// Package dummy prevents go tooling from stripping the c dependencies.
+package dummy

v3.3/glfw/glfw/deps/mingw/dummy.go

@@ -0,0 +1,4 @@
+// +build required
+
+// Package dummy prevents go tooling from stripping the c dependencies.
+package dummy

v3.3/glfw/glfw/deps/vs2008/dummy.go

@@ -0,0 +1,4 @@
+// +build required
+
+// Package dummy prevents go tooling from stripping the c dependencies.
+package dummy

v3.3/glfw/glfw/include/GLFW/dummy.go

@@ -0,0 +1,4 @@
+// +build required
+
+// Package dummy prevents go tooling from stripping the c dependencies.
+package dummy

v3.3/glfw/glfw/src/dummy.go

@@ -0,0 +1,4 @@
+// +build required
+
+// Package dummy prevents go tooling from stripping the c dependencies.
+package dummy