Index: build/premake/premake5.lua
===================================================================
--- build/premake/premake5.lua
+++ build/premake/premake5.lua
@@ -33,6 +33,11 @@
 -- Root directory of project checkout relative to this .lua file
 rootdir = "../.."
 
+-- Target build version explicitly for Xcode
+if os.istarget("macosx") and not _OPTIONS["macosx-version-min"] then
+	_OPTIONS["macosx-version-min"] = "${MIN_OSX_VERSION}"
+end
+
 dofile("extern_libs5.lua")
 
 -- detect compiler for non-Windows
@@ -536,6 +541,8 @@
 
 	if os.istarget("windows") then
 		rtti "off"
+	elseif os.istarget("macosx") and _OPTIONS["macosx-version-min"] then
+		xcodebuildsettings { MACOSX_DEPLOYMENT_TARGET = _OPTIONS["macosx-version-min"] }
 	end
 end
 
@@ -560,6 +567,8 @@
 	if os.istarget("windows") then
 		rtti "off"
 		links { "delayimp" }
+	elseif os.istarget("macosx") and _OPTIONS["macosx-version-min"] then
+		xcodebuildsettings { MACOSX_DEPLOYMENT_TARGET = _OPTIONS["macosx-version-min"] }
 	end
 end
 
@@ -1034,7 +1043,9 @@
 
 		links { "pthread" }
 		links { "ApplicationServices.framework", "Cocoa.framework", "CoreFoundation.framework" }
-
+		if _OPTIONS["macosx-version-min"] then
+			xcodebuildsettings { MACOSX_DEPLOYMENT_TARGET = _OPTIONS["macosx-version-min"] }
+		end
 	end
 end
 
@@ -1419,6 +1430,9 @@
 		filter { }
 
 		includedirs { source_root .. "pch/test/" }
+
+	elseif os.istarget("macosx") and _OPTIONS["macosx-version-min"] then
+		xcodebuildsettings { MACOSX_DEPLOYMENT_TARGET = _OPTIONS["macosx-version-min"] }
 	end
 end