Enable enablewarnings for visual studio

Author: Jarod42

modules/vstudio/tests/vc2019/test_compile_settings.lua

@@ -226,3 +226,32 @@
 	<AdditionalOptions>-Werror=disable %(AdditionalOptions)</AdditionalOptions>
 		]]
 	end
+
+--
+-- Enable specific warnings.
+--
+
+	function suite.enableSpecificWarnings()
+		enablewarnings { "0000" }
+		prepare()
+		test.capture [[
+<ClCompile>
+	<PrecompiledHeader>NotUsing</PrecompiledHeader>
+	<WarningLevel>Level3</WarningLevel>
+	<Optimization>Disabled</Optimization>
+	<AdditionalOptions>/w10000 %(AdditionalOptions)</AdditionalOptions>
+		]]
+	end
+
+	function suite.enableSpecificWarningsWithClang()
+		enablewarnings { "disable" }
+		toolset "clang"
+		prepare()
+		test.capture [[
+<ClCompile>
+	<PrecompiledHeader>NotUsing</PrecompiledHeader>
+	<WarningLevel>Level3</WarningLevel>
+	<Optimization>Disabled</Optimization>
+	<AdditionalOptions>-Wdisable %(AdditionalOptions)</AdditionalOptions>
+		]]
+	end

modules/vstudio/vs2010_vcxproj.lua

@@ -2150,6 +2150,7 @@
 		if cfg.toolset and cfg.toolset:startswith("msc") then
 			local value = iif(cfg.unsignedchar, "On", "Off")
 			table.insert(opts, p.tools.msc.shared.unsignedchar[value])
+			opts = table.join(opts, table.translate(cfg.enablewarnings, function(enable) return '/w1' .. enable end))
 		elseif _ACTION >= "vs2019" and cfg.toolset and cfg.toolset == "clang" then
 			local value = iif(cfg.unsignedchar, "On", "Off")
 			table.insert(opts, p.tools.msc.shared.unsignedchar[value])
@@ -2163,6 +2164,7 @@
 			end
 			opts = table.join(opts, table.translate(cfg.disablewarnings, function(disable) return '-Wno-' .. disable end))
 			opts = table.join(opts, table.translate(p.filterFatalWarnings(cfg.fatalwarnings), function(disable) return '-Werror=' .. disable end))
+			opts = table.join(opts, table.translate(cfg.enablewarnings, function(enable) return '-W' .. enable end))
 		end
 
 		if #opts > 0 then