Environment Variable to Customize .INCLUDE_DIRS

[Afif Elghraoui]

Hello,
I'm looking for a way to be able to store custom makefile rules in 
special folders.
I see that the Makefile variable .INCLUDE_DIRS is set to "/usr/include 
/usr/local/include /usr/include" on my machine by default, but is there 
an environment variable I can set to add different directories (like 
$HOME/include) in the same
way that can be done for CPATH, LIBRARY_PATH, and MANPATH for other things?

I know that i can also pass in a custom include path on the command 
line, but I would like to have some files with generic rules that I can 
include without any special command line invocation or hardcoding the 
absolute path.

Thanks and regards
Afif

--
Afif Elghraoui
Laboratory for Pathogenesis of Clinical Drug Resistance and Persistence
San Diego State University
Alvarado Medical Center
6367 Alvarado Court, Suite 206
San Diego, CA 92120
p. 858-222-0454
http://tuberculosis.sdsu.edu