Adding C++ module file extensions and implementing "allmodulespublic"

modules/vstudio/tests/vc2019/test_toolset_settings.lua

@@ -57,3 +57,40 @@
 </PropertyGroup>
 		]]
 	end
+
+
+--
+-- If AllModulesPublic flag is set, add <AllProjectBMIsArePublic> element (supported from VS2019)
+--
+
+function suite.onAllModulesPublicOn()
+	allmodulespublic "On"
+	local cfg = test.getconfig(prj, "Debug", platform)
+	vc2010.outputProperties(cfg)
+	test.capture [[
+<PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
+	<LinkIncremental>true</LinkIncremental>
+	<OutDir>bin\Debug\</OutDir>
+	<IntDir>obj\Debug\</IntDir>
+	<TargetName>MyProject</TargetName>
+	<TargetExt>.exe</TargetExt>
+	<AllProjectBMIsArePublic>true</AllProjectBMIsArePublic>
+</PropertyGroup>
+		]]
+end
+
+function suite.onAllModulesPublicOff()
+	allmodulespublic "Off"
+	local cfg = test.getconfig(prj, "Debug", platform)
+	vc2010.outputProperties(cfg)
+	test.capture [[
+<PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
+	<LinkIncremental>true</LinkIncremental>
+	<OutDir>bin\Debug\</OutDir>
+	<IntDir>obj\Debug\</IntDir>
+	<TargetName>MyProject</TargetName>
+	<TargetExt>.exe</TargetExt>
+	<AllProjectBMIsArePublic>false</AllProjectBMIsArePublic>
+</PropertyGroup>
+		]]
+end

modules/vstudio/vs2010_vcxproj.lua

@@ -243,6 +243,7 @@
 				m.generateManifest,
 				m.extensionsToDeleteOnClean,
 				m.executablePath,
+				m.allModulesPublic,
 			}
 		end
 	end
@@ -795,7 +796,7 @@
 ---
 	m.categories.ClCompile = {
 		name       = "ClCompile",
-		extensions = { ".cc", ".cpp", ".cxx", ".c++", ".c", ".s", ".m", ".mm" },
+		extensions = { ".cc", ".cpp", ".cxx", ".c++", ".c", ".s", ".m", ".mm", ".cppm", ".ixx" },
 		priority   = 2,
 
 		emitFiles = function(prj, group)
@@ -1506,11 +1507,15 @@
 	function m.conformanceMode(cfg)
 		if _ACTION >= "vs2017" then
 			if cfg.conformancemode ~= nil then
-				if cfg.conformancemode then
-					m.element("ConformanceMode", nil, "true")
-				else
-					m.element("ConformanceMode", nil, "false")
-				end
+				m.element("ConformanceMode", nil, iif(cfg.conformancemode, "true", "false"))
+			end
+		end
+	end
+
+	function m.allModulesPublic(cfg)
+		if _ACTION >= "vs2019" then
+			if cfg.allmodulespublic ~= nil then
+				m.element("AllProjectBMIsArePublic", nil, iif(cfg.allmodulespublic, "true", "false"))
 			end
 		end
 	end

src/_premake_init.lua

@@ -190,6 +190,12 @@
 			"HeaderUnit"
 		}
 	}
+
+	api.register {
+		name = "allmodulespublic",
+		scope = "config",
+		kind = "boolean"
+	}
 
 	api.register {
 		name = "configmap",

src/base/path.lua

@@ -171,7 +171,7 @@
 	end
 
 	function path.iscppfile(fname)
-		return path.hasextension(fname, { ".cc", ".cpp", ".cxx", ".c++" })
+		return path.hasextension(fname, { ".cc", ".cpp", ".cxx", ".c++", ".cppm", ".ixx" })
 			or path.isobjcppfile(fname)	-- is this really right?
 			or path.iscfile(fname)
 	end

website/docs/allmodulespublic.md

@@ -0,0 +1,27 @@
+allmodulespublic
+
+```lua
+allmodulespublic "value"
+```
+
+### Parameters ###
+
+`value` one of:
+* `On` - All C++ modules in the given project(s) will be public.
+* `Off` - Not all C++ modules in the given project(s) will be public.
+
+## Applies To ###
+
+The `config` scope.
+
+### Availability ###
+
+Visual Studio 2019 and later.
+Premake 5.0-beta2 or later.
+
+### Examples ###
+
+```lua
+allmodulespublic "On"
+```
+

website/sidebars.js

@@ -60,6 +60,7 @@ module.exports = {
 					type: 'category',
 					label: 'Project Settings',
 					items: [
+						'allmodulespublic',
 						'androidapilevel',
 						'androidapplibname',
 						'architecture',