How to manage files with different folders for make

[jpn]

When i give make each time it takes all files to compile, but if i use same folder it only takes whatever files i changed,

Just to assure, just "make" and nothing else?

How to avoid the recompilation of all files rather than changed files?

The toolchain should take care of recompiling only necessary files. Something else must be wrong. Could we see the .pro file?