% in makefile

[daviddoria]

There is a section in a makefile I have

%.o: %.cpp %.h
g++ -g -c $<

I can't seem to find anything about what the % is? can someone explain this or point me to a tutorial that explains it? Or at least tell me what its called so I can search better?

Thanks!

Dave

[dshaw256]

I'm not all that knowledgable on make myself, but its position screams "wild card" to me.

[majikthise]

Try this.
http://www.student.cs.uwaterloo.ca/~...make/tutorial/

[stevea]

How about RTFM ?

"info make" and select "*Pattern Rules::"
The details are abundant.. See details on "%" but also $@, #%, $<, $?, $^ .


I find the "man" vs "info" dichotomy annoying but till the future - learn both.