make option to recompile only changed files

[charfi asma <charfiasma@xxxxxxxx>]

Hello,

I only change my compiler (uml1.c) (uml is my new gcc front end)
Is there a make option to tell compiler : recompile only uml1.c , all other 
files are kept unchanged ?
every time I change the uml1.c file, I reconfigure, re make and re make install, 
it takes some times 10 minutes to do it.

thank you for the help

Asma