[LINUX/BASH] What are the equivalent of "$ export CFLAGS+=" -I/path/"" and "$ export CXXFLAGS+=" -I/path/"" inside the makefile?

[cinnamonmatexfce]

What USER-CONFIGURABLE OPTIONS should I use?
ARCHOPTS=
or
ARCHOPTS_C=
or
ARCHOPTS_CXX=
or
OVERRIDE_CC=
or
OVERRIDE_CXX=

Looking at the syntax, for what I understand, I think I'd go for ARCHOPTS_C= and ARCHOPTS_CXX.
Right?

Thanks

[rb6502]

What are you actually trying to do? MAME should compile fine as-is on pretty near any Linux distro.