Require MacOS 10.8, so that we have std::promise<void>

eggrobin · web-flow · commit 6ef3b020818d · 2017-09-19T06:02:06.000+02:00
diff --git a/Makefile b/Makefile
@@ -87,7 +87,7 @@ ifeq ($(UNAME_S),Linux)
     SHAREDFLAG := -shared
 endif
 ifeq ($(UNAME_S),Darwin)
-    SHARED_ARGS += -mmacosx-version-min=10.7 -arch x86_64
+    SHARED_ARGS += -mmacosx-version-min=10.8 -arch x86_64
     MDTOOL ?= "/Applications/Xamarin Studio.app/Contents/MacOS/mdtool"
     SHAREDFLAG := -dynamiclib
 endif
