If you find yourself stuck at
"_OBJC_CLASS_$_NSMenuItem", referenced from: objc-class-ref in libglfw3.a(cocoa_window.m.o) "_OBJC_CLASS_$_NSOpenGLContext", referenced from: objc-class-ref in libglfw3.a(nsgl_context.m.o) "_OBJC_CLASS_$_NSOpenGLPixelFormat", referenced from: objc-class-ref in libglfw3.a(nsgl_context.m.o) "_OBJC_CLASS_$_NSPasteboard", referenced from: objc-class-ref in libglfw3.a(cocoa_window.m.o) "_OBJC_CLASS_$_NSTrackingArea", referenced from: objc-class-ref in libglfw3.a(cocoa_window.m.o) "_OBJC_CLASS_$_NSView", referenced from: _OBJC_CLASS_$_GLFWContentView in libglfw3.a(cocoa_window.m.o) "_OBJC_CLASS_$_NSWindow", referenced from: _OBJC_CLASS_$_GLFWWindow in libglfw3.a(cocoa_window.m.o) "_OBJC_METACLASS_$_NSApplication", referenced from: _OBJC_METACLASS_$_GLFWApplication in libglfw3.a(cocoa_window.m.o) "_OBJC_METACLASS_$_NSView", referenced from: _OBJC_METACLASS_$_GLFWContentView in libglfw3.a(cocoa_window.m.o) "_OBJC_METACLASS_$_NSWindow", referenced from: _OBJC_METACLASS_$_GLFWWindow in libglfw3.a(cocoa_window.m.o)

While doing swift build -Xcc -I/usr/local/include -Xlinker -L/usr/local/lib

Don't forget to
import Cocoa
at your main.swift

I am trying to build the examples, but I get this error when running swift build:

Updating https://github.com/SwiftGL/Math.git
Updating https://github.com/SwiftGL/OpenGL.git
Updating https://github.com/SwiftGL/Image.git
Updating https://github.com/SwiftGL/CGLFW3.git
error: the package dependency graph could not be resolved; unable to find any available tag for the following requirements:
    https://github.com/SwiftGL/CGLFW3.git @ 2.0.0..<3.0.0

Any help would be great!

Swift Package Manager - Swift 5.1.0 (331fa5cb)

I cannot get the package manager to work, even when I used the version of the package.swift posted in the swiftGL/examples it throws a whole bunch of errors about arguments being in the wrong order. Even when I put them in the right order the compiler throws this error:

error: manifest parse error(s): /Users/Isaac/Desktop/OpenGL/Hello Window/Package.swift:10:10: error: type 'Target' has no member 'target' .target(name: "example", dependencies: ["SGLMath", "SGLImage", "SGLOpenGL"], path: "."), ~^

I am using this swift version:
Apple Swift version 4.0.3 (swiftlang-900.0.74.1 clang-900.0.39.2)
Target: x86_64-apple-macosx10.9

I have never used the swift package manager so any help would be appreciated.