From 5059099a5b67ef501020166c8ce274ddfdc4af0e Mon Sep 17 00:00:00 2001
From: Sam Surtees <s.surtees@lorgames.com>
Date: Thu, 17 Mar 2016 22:56:23 +1000
Subject: [PATCH] Added systemversion API. Fixes #315

---
 src/_premake_init.lua                         |  6 ++
 src/actions/vstudio/vs2010_vcxproj.lua        |  9 +++
 src/base/project.lua                          | 11 ++++
 tests/actions/vstudio/vc2010/test_globals.lua | 61 +++++++++++++++++++
 4 files changed, 87 insertions(+)

diff --git a/src/_premake_init.lua b/src/_premake_init.lua
index 9e90d532..d1424a93 100644
--- a/src/_premake_init.lua
+++ b/src/_premake_init.lua
@@ -966,6 +966,12 @@
 		},
 	}
 
+	api.register {
+		name = "systemversion",
+		scope = "project",
+		kind = "string",
+	}
+
 	api.register {
 		name = "targetdir",
 		scope = "config",
diff --git a/src/actions/vstudio/vs2010_vcxproj.lua b/src/actions/vstudio/vs2010_vcxproj.lua
index c4d42a50..79af4432 100644
--- a/src/actions/vstudio/vs2010_vcxproj.lua
+++ b/src/actions/vstudio/vs2010_vcxproj.lua
@@ -127,6 +127,7 @@
 			m.ignoreWarnDuplicateFilename,
 			m.keyword,
 			m.projectName,
+			m.targetPlatformVersion,
 		}
 	end
 
@@ -1924,6 +1925,14 @@
 	end
 
 
+	function m.targetPlatformVersion(prj)
+		local min = project.systemversion(prj)
+		if min ~= nil and _ACTION >= "vs2015" then
+			m.element("WindowsTargetPlatformVersion", nil, min)
+		end
+	end
+
+
 	function m.treatLinkerWarningAsErrors(cfg)
 		if cfg.flags.FatalLinkWarnings then
 			local el = iif(cfg.kind == p.STATICLIB, "Lib", "Linker")
diff --git a/src/base/project.lua b/src/base/project.lua
index a073de50..42b4cd91 100755
--- a/src/base/project.lua
+++ b/src/base/project.lua
@@ -506,3 +506,14 @@
 		return pairing
 	end
 
+
+--
+-- Given a project, returns requested min and max system versions.
+--
+
+	function project.systemversion(prj)
+		if prj.systemversion ~= nil then
+			local values = string.explode(prj.systemversion, ":", true)
+			return values[1], values[2]
+		end
+	end
diff --git a/tests/actions/vstudio/vc2010/test_globals.lua b/tests/actions/vstudio/vc2010/test_globals.lua
index 56f1a24c..dccee468 100755
--- a/tests/actions/vstudio/vc2010/test_globals.lua
+++ b/tests/actions/vstudio/vc2010/test_globals.lua
@@ -191,3 +191,64 @@
 </PropertyGroup>
 		]]
 	end
+
+
+--
+-- VS 2015 adds the <WindowsTargetPlatformVersion> to allow developers
+-- to target different versions of the Windows SDK.
+--
+
+	function suite.windowsTargetPlatformVersionMissing_on2013Default()
+		_ACTION = "vs2013"
+		prepare()
+		test.capture [[
+<PropertyGroup Label="Globals">
+	<ProjectGuid>{42B5DBC6-AE1F-903D-F75D-41E363076E92}</ProjectGuid>
+	<IgnoreWarnCompileDuplicatedFilename>true</IgnoreWarnCompileDuplicatedFilename>
+	<Keyword>Win32Proj</Keyword>
+	<RootNamespace>MyProject</RootNamespace>
+</PropertyGroup>
+		]]
+	end
+
+	function suite.windowsTargetPlatformVersionMissing_on2013()
+		_ACTION = "vs2013"
+		systemversion "10.0.10240.0"
+		prepare()
+		test.capture [[
+<PropertyGroup Label="Globals">
+	<ProjectGuid>{42B5DBC6-AE1F-903D-F75D-41E363076E92}</ProjectGuid>
+	<IgnoreWarnCompileDuplicatedFilename>true</IgnoreWarnCompileDuplicatedFilename>
+	<Keyword>Win32Proj</Keyword>
+	<RootNamespace>MyProject</RootNamespace>
+</PropertyGroup>
+		]]
+	end
+
+	function suite.windowsTargetPlatformVersionMissing_on2015Default()
+		_ACTION = "vs2015"
+		prepare()
+		test.capture [[
+<PropertyGroup Label="Globals">
+	<ProjectGuid>{42B5DBC6-AE1F-903D-F75D-41E363076E92}</ProjectGuid>
+	<IgnoreWarnCompileDuplicatedFilename>true</IgnoreWarnCompileDuplicatedFilename>
+	<Keyword>Win32Proj</Keyword>
+	<RootNamespace>MyProject</RootNamespace>
+</PropertyGroup>
+		]]
+	end
+
+	function suite.windowsTargetPlatformVersion_on2015()
+		_ACTION = "vs2015"
+		systemversion "10.0.10240.0"
+		prepare()
+		test.capture [[
+<PropertyGroup Label="Globals">
+	<ProjectGuid>{42B5DBC6-AE1F-903D-F75D-41E363076E92}</ProjectGuid>
+	<IgnoreWarnCompileDuplicatedFilename>true</IgnoreWarnCompileDuplicatedFilename>
+	<Keyword>Win32Proj</Keyword>
+	<RootNamespace>MyProject</RootNamespace>
+	<WindowsTargetPlatformVersion>10.0.10240.0</WindowsTargetPlatformVersion>
+</PropertyGroup>
+		]]
+	end