Ansi compiler switch

[Michael Abbott <michael.abbott@diamond.ac.uk>]

I have an Epics 3.14.7 driver where I found myself wanting to use the 
typeof() primitive: as this doesn't appear to be supported as part of ANSI 
C++ I found it necessary to defeat the -ansi flag that seems to be set by 
default in the Epics build environment.

My question is this: what is the "correct" way to defeat this flag? 
Digging through the make system, I discovered that adding the following 
two lines to my Makefile does the trick:

	CMPLR=LAX
	CXXCMPLR=LAX

(As I recall it, all that matters is that the RHS is not the string 
STRICT.)

I was wondering *why* this flag is set, but thinking about it I guess the 
point is that Epics is intended to be thoroughly cross-platform these 
days.  My driver most definitely isn't, so I'm happy to lose the flag, but 
I'd like to know that I'm not abusing the makefile.