build/install: fall back to Unix desktop

Instead of enumerating every Unix assume Freedesktop-compliant behavior.
In future Android may want to define its own flavor like OSX.

Makefile

@@ -76,12 +76,10 @@ VERSION     = $(shell git name-rev --name-only --tags --no-undefined HEAD 2>/dev
 
 # dependencies
 UNAME_S := $(shell uname -s)
-ifeq ($(UNAME_S),Linux)
-os-dependencies = linux-dependencies
-else ifneq (,$(findstring BSD,$(UNAME_S)))
-os-dependencies = bsd-dependencies
-else ifeq ($(UNAME_S),Darwin)
+ifeq ($(UNAME_S),Darwin)
 os-dependencies = osx-dependencies
+else
+os-dependencies = linux-dependencies
 endif
 
 
@@ -311,11 +309,6 @@ linux-dependencies: cli-dependencies linux-native-dependencies
 linux-native-dependencies:
 	@./thirdparty/configure-native-deps.sh
 
-bsd-dependencies: cli-dependencies bsd-native-dependencies
-
-bsd-native-dependencies:
-	@./thirdparty/configure-native-deps.sh
-
 windows-dependencies:
 	@./thirdparty/fetch-thirdparty-deps-windows.sh
 
@@ -380,7 +373,7 @@ install-core: default
 	@$(INSTALL_PROGRAM) Newtonsoft.Json.dll "$(DATA_INSTALL_DIR)"
 	@$(INSTALL_PROGRAM) RestSharp.dll "$(DATA_INSTALL_DIR)"
 
-ifeq ($(shell uname),Linux)
+ifneq ($(UNAME_S),Darwin)
 	@$(CP) *.sh "$(DATA_INSTALL_DIR)"
 endif
 

OpenRA.Game/Platform.cs

@@ -36,10 +36,10 @@ namespace OpenRA
 				psi.RedirectStandardOutput = true;
 				var p = Process.Start(psi);
 				var kernelName = p.StandardOutput.ReadToEnd();
-				if (kernelName.Contains("Linux") || kernelName.Contains("BSD"))
-					return PlatformType.Linux;
 				if (kernelName.Contains("Darwin"))
 					return PlatformType.OSX;
+				else
+					return PlatformType.Linux;
 			}
 			catch { }