Wirth's book does not implement a "real" programming language. Whatever your thoughts on Oberon and Pascal-like SHOUTCASE languages, it's largely irrelevant. Oberon is arguably a "real" language (and operating system), but Wirth's book does not cover the implementation of Oberon. It covers the implementation of Oberon0, an inarguably toy subset of Oberon. (Actually, "subset" is not even correct.) The example code has also diverged from the book, with Wirth abandoning the strategy described in the book for avoiding redundant initialization of the module static base, among other things.

Aside from that, I encourage everyone who cites Compiler Construction to actually work through the first 10% of the book and then count the number of errata.

The book is a very hands on tutorial whereas Wirths is basic literature for the general case.

While they teach similar content, they have a different approach.

There are literally thousands of compiler design books out there, I don't really see anything particularly comparable between this book and Wirth's

Similar to studying OS concepts using Silberschatz' Operating System Concept and Tanenbaum's Operating Systems Design and Implementation. The former only explains the theoritical ideas, while the latter is the documentation of an implementation.