[fpc-pascal] Library packages

[Adriaan van Os]

Can someone tell me what the status is of Library packages, aka "Delphi packages" ? I found the 
WIki <https://wiki.freepascal.org/packages> but it looks like a preliminary document.

My questions

1. For MacOS, are there any differences at the Mach-O level between a dynamic library and a library 
package ? Are different linking switches used ? Which ones ?

2. Are there any differences at the FreePascal RTL level ? What compiler building options govern this ?

Probably there are differences for Lazarus too, but my first interest are the low-level changes.

Regards,

Adriaan van Os