Added project references to VC 2008 to fix intermittent build failures

src/actions/vstudio/vs200x_vcproj.lua

@@ -47,6 +47,7 @@
 		_p(1,'</Configurations>')
 
 		_p(1,'<References>')
+		vc200x.projectReferences(prj)
 		_p(1,'</References>')
 
 		_p(1,'<Files>')
@@ -595,6 +596,26 @@
 	end
 
 
+--
+-- Write out the list of project references.
+--
+
+	function vc200x.projectReferences(prj)
+		local deps = project.getdependencies(prj)
+		if #deps > 0 then
+			local prjpath = project.getlocation(prj)
+			
+			for _, dep in ipairs(deps) do
+				local relpath = path.getrelative(prjpath, vstudio.projectfile_ng(dep))
+				_p(2,'<ProjectReference')
+				_p(3,'ReferencedProjectIdentifier="{%s}"', dep.uuid)
+				_p(3,'RelativePathToProject="%s"', path.translate(relpath))
+				_p(2,'/>')
+			end
+		end
+	end
+
+
 --
 -- Return the list of tools required to build a specific configuration.
 -- Each tool gets represented by an XML element in the project file.
@@ -922,7 +943,7 @@
 		end
 	end
 
-	
+
 --
 -- Output the correct project version attribute for the current action.
 --

tests/actions/vstudio/vc200x/test_project_refs.lua

@@ -0,0 +1,76 @@
+--
+-- tests/actions/vstudio/vc200x/test_project_refs.lua
+-- Validate project references in Visual Studio 200x C/C++ projects.
+-- Copyright (c) 2011-2012 Jason Perkins and the Premake project
+--
+
+	T.vstudio_vs200x_project_refs = { }
+	local suite = T.vstudio_vs200x_project_refs
+	local vc200x = premake.vstudio.vc200x
+
+
+--
+-- Setup
+--
+
+	local sln, prj
+
+	function suite.setup()
+		_ACTION = "vs2008"
+		sln = test.createsolution()
+		uuid "00112233-4455-6677-8888-99AABBCCDDEE"
+		test.createproject(sln)
+	end
+
+	local function prepare(platform)
+		prj = premake.solution.getproject_ng(sln, 2)
+		vc200x.projectReferences(prj)
+	end
+
+
+--
+-- If there are no sibling projects listed in links(), then the
+-- entire project references item group should be skipped.
+--
+
+	function suite.noProjectReferencesGroup_onNoSiblingReferences()
+		prepare()
+		test.isemptycapture()
+	end
+
+
+--
+-- If a sibling project is listed in links(), an item group should
+-- be written with a reference to that sibling project.
+--
+
+	function suite.projectReferenceAdded_onSiblingProjectLink()
+		links { "MyProject" }
+		prepare()
+		test.capture [[
+		<ProjectReference
+			ReferencedProjectIdentifier="{00112233-4455-6677-8888-99AABBCCDDEE}"
+			RelativePathToProject="MyProject.vcproj"
+		/>
+		]]
+	end
+
+--
+-- Project references should always be specified relative to the 
+-- project doing the referencing.
+--
+
+	function suite.referencesAreRelative_onDifferentProjectLocation()
+		links { "MyProject" }
+		location "build/MyProject2"
+		project("MyProject")
+		location "build/MyProject"
+		prepare()
+		test.capture [[
+		<ProjectReference
+			ReferencedProjectIdentifier="{00112233-4455-6677-8888-99AABBCCDDEE}"
+			RelativePathToProject="..\MyProject\MyProject.vcproj"
+		/>
+		]]
+	end
+		

tests/premake4.lua

@@ -132,6 +132,7 @@
 	dofile("actions/vstudio/vc200x/test_mfc.lua")
 	dofile("actions/vstudio/vc200x/test_platforms.lua")
 	dofile("actions/vstudio/vc200x/test_project.lua")
+	dofile("actions/vstudio/vc200x/test_project_refs.lua")
 	dofile("actions/vstudio/vc200x/test_resource_compiler.lua")
 
 	-- Visual Studio 2010 C/C++ projects