Consider using runtime checks instead of multi-targeting specific Unix distros in System.IO.Ports #54556
Description
System.IO.Ports currently targets Linux, OSX and FreeBSD even though their implementation is 95% identical. To reduce package size and build times runtime checks could be used for the 5% diverging functionality:
runtime/src/libraries/System.IO.Ports/src/System.IO.Ports.csproj
Lines 109 to 117 in 85aebc4
As an example, when adding NetCoreAppCurrent configurations, the package grows disproportionally because of the amount of runtime specific assemblies.