I forgot:

to reduce the current compilation output, type

make silent

(just filters the compilation lines with sed, stderr still visible). At some 
point one could introduce a config.h file, which is used to pass all the 
compile switches determined by configure to the preprocessor, so the awfully 
long compile lines would get shorter. But this requires adding a include 
directive to all source files, so I did not want to do it now.

To build the test files (e.g. for crypto and mon stuff)

make check

They will never be installed by make install (the check target is just for 
compiling and running a package's tests. At some point one could add some 
active tests to this target).

make distcheck

this will ensure, that a generated tarball can indeed compile.