Improve OS detection (fixes #14)

Source/Libs/Shared/FuncLoader.cs

@@ -30,12 +30,37 @@ class FuncLoader
         public static extern IntPtr dlsym(IntPtr handle, string symbol);
     }
 
-    private static bool IsWindows, IsOSX;
+    [DllImport("libc")]
+    private static extern int uname(IntPtr buf);
+
+    public static bool IsWindows, IsOSX;
 
     static FuncLoader()
     {
-        IsWindows = RuntimeInformation.IsOSPlatform(OSPlatform.Windows);
+        switch (Environment.OSVersion.Platform)
-        IsOSX = RuntimeInformation.IsOSPlatform(OSPlatform.OSX);
+        {
+            case PlatformID.Win32NT:
+            case PlatformID.Win32S:
+            case PlatformID.Win32Windows:
+            case PlatformID.WinCE:
+                IsWindows = true;
+                break;
+            case PlatformID.MacOSX:
+                IsOSX = true;
+                break;
+            case PlatformID.Unix:
+                try
+                {
+                    var buf = Marshal.AllocHGlobal(8192);
+                    if (uname(buf) == 0 && Marshal.PtrToStringAnsi(buf) == "Darwin")
+                        IsOSX = true;
+
+                    Marshal.FreeHGlobal(buf);
+                }
+                catch { }
+
+                break;
+        }
     }
 
     public static IntPtr LoadLibrary(string libname)

Source/Libs/Shared/GLibrary.cs

@@ -47,9 +47,9 @@ class GLibrary
             var i = _libdict.Find((e) => e.Library == library);
             var s = i.LinuxLib;
 
-            if (RuntimeInformation.IsOSPlatform(OSPlatform.Windows))
+            if (FuncLoader.IsWindows)
                 s = i.WindowsLib;
-            else if (RuntimeInformation.IsOSPlatform(OSPlatform.OSX))
+            else if (FuncLoader.IsOSX)
                 s = i.OSXLib;
 
             _libraries[library] = ret = FuncLoader.LoadLibrary(s);

build.cake

@@ -6,7 +6,7 @@
 // VARS
 
 Settings.Cake = Context;
-Settings.Version = "3.22.24.28";
+Settings.Version = "3.22.24.29";
 Settings.BuildTarget = Argument("BuildTarget", "Default");
 Settings.Assembly = Argument("Assembly", "");