VisualC: turn on multi-processor compilation. This makes SDL2 build in 12 seconds, instead of 50, on my Windows workstation, with Visual Studio.
diff --git a/VisualC/SDL/SDL.vcxproj b/VisualC/SDL/SDL.vcxproj
index 2c85790..957dabe 100644
--- a/VisualC/SDL/SDL.vcxproj
+++ b/VisualC/SDL/SDL.vcxproj
@@ -137,6 +137,7 @@
<DebugInformationFormat>OldStyle</DebugInformationFormat>
<OmitDefaultLibName>true</OmitDefaultLibName>
<InlineFunctionExpansion>OnlyExplicitInline</InlineFunctionExpansion>
+ <MultiProcessorCompilation>true</MultiProcessorCompilation>
</ClCompile>
<ResourceCompile>
<PreprocessorDefinitions>_DEBUG;%(PreprocessorDefinitions)</PreprocessorDefinitions>