Add sysincludedirs() and VC 2010+ implementation

src/_premake_init.lua

@@ -821,6 +821,13 @@
 		}
 	}
 
+	api.register {
+		name = "sysincludedirs",
+		scope = "config",
+		kind = "list:directory",
+		tokens = true,
+	}
+
 	api.register {
 		name = "system",
 		scope = "config",

src/actions/vstudio/vs2010_vcxproj.lua

@@ -194,6 +194,7 @@
 				m.intDir,
 				m.targetName,
 				m.targetExt,
+				m.includePath,
 				m.imageXexOutput,
 				m.generateManifest,
 				m.extensionsToDeleteOnClean,
@@ -1242,6 +1243,14 @@
 	end
 
 
+	function m.includePath(cfg)
+		local dirs = vstudio.path(cfg, cfg.sysincludedirs)
+		if #dirs > 0 then
+			p.x('<IncludePath>%s;$(IncludePath)</IncludePath>', table.concat(dirs, ";"))
+		end
+	end
+
+
 	function m.intDir(cfg)
 		local objdir = vstudio.path(cfg, cfg.objdir)
 		_x(2,'<IntDir>%s\\</IntDir>', objdir)

tests/actions/vstudio/vc2010/test_output_props.lua

@@ -253,3 +253,23 @@
 	</PropertyGroup>
 		]]
 	end
+
+
+--
+-- Check the handling of the VC++ Directories.
+--
+
+	function suite.onSystemIncludeDirs()
+		sysincludedirs { "$(DXSDK_DIR)/Include" }
+		prepare()
+		test.capture [[
+	<PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
+		<LinkIncremental>true</LinkIncremental>
+		<OutDir>.\</OutDir>
+		<IntDir>obj\Debug\</IntDir>
+		<TargetName>MyProject</TargetName>
+		<TargetExt>.exe</TargetExt>
+		<IncludePath>$(DXSDK_DIR)\Include;$(IncludePath)</IncludePath>
+	</PropertyGroup>
+		]]
+	end