Makefile: setting variables to output of commands

[tCarls]

I'm trying to run a command that is dependent on all files within a directory. I could do something like this:

test : dir/* dir/dir2/* dir/dir3/* ... etc
   run command

But it would be much easier if I could do this (it doesn't work):

files = `find dir/`
test : $(files)
   run command

Is there a way to set a variable in a Makefile to the output of a shell command?

 

[Annihilannic]

There is an example of doing this in the GNU Make Manual using the 'foreach' function:

http://www.gnu.org/software/make/manual/make.html#Foreach-Function

Alternatively you could populate a shell environment variable with the files before running make, and then use that variable in the makefile.

Annihilannic.