Installer talks about Command Line Compiler, which isn't there for years

Afaik, the is no such thing since several years now…

Unbenannt

Sure there is. see Installing the Command Line Compiler and Building Projects w/ EBuild.

Ok, i thought of Oxygene.exe or something like that (as it was).
Of course i can use EBild.

We don’t have a standalone exe for just the compiler anymore (not for a long time) because it’s not very useful, as you’ll need extra steps to compile pretty much any kind of project (even if just to, say, resolve references). Ebuild.exe basically is the command line compiler (and more).