Re: Getting list of source files from directory hierarchy

[Harvey Chapman]

I have a simple generic Makefile that will use an explicit list of  
sources, if defined, but otherwise uses "find" to get a list of  
sources. This has two benefits:
1. I can do a quick compile of a directory of sources just by copying  
my makefile to the directory and typing "make". Later, I can revise  
the makefile to make it custom. In some ways, this use of my generic  
makefile is just a way of enhancing make's built-in rules. For  
instance, we can already "make program" without a makefile if  
program.c exists in our current directory. But, I can "make  
TARGET=program" with one or more sources in a directory with zero  
changes to my makefile.
2. I can give this makefile to my non-makefile-savvy co-workers saving  
me some time.

Notes:
- If you're going to recurse directories for sources, it also helps to  
do the same for include directories.
- Writing the automatic dependency rules is just marginally more  
difficult as you have to make sure that the dependency targets include  
the /path/to/objects.o.

Harvey