Copying Prerequisites / conditional remove Prerequisites

[Erik Rull]

Hi all,

I want to read out the prerequisites of a defined target into a variable 
but outside the target rule. Within the target rule I can access to it via 
$$+, but how can I get this value from outside?

The other thing I'm trying to solve is:
make without any arguments builds my targets (and this works fine)
make clean should clean up my output targets and their compiled 
prerequisites - like doing a rollback in a database and name the files that 
have to be removed
Basically I could solve that by writing rm *.o and so on.

What I have is a dynamically built target list and a dynamically created 
prerequisite list based on variables that are built when executing the 
standard "make" call.
There is all information for doing a "clean" present it is only hidden in 
the dynamically created rules and I have currently no idea how to access them.

My idea was to just read out the rules and remove the targets and their 
prerequisite files (finally with rm).

Finally I'm looking for a possibility that prevents that new prerequisites 
get appended to a target.
You can write
target: prerequisiteN
as often as you want but how can I "close" the list of prerequisites so 
that there cannot be appended anything else? (or that all successive 
appended prerequistes are ignored)

Lots of questions :-)

Thanks a lot in advance!

Best regards,

Erik