"make" SHELL variable

[daveb at rtech.UUCP]

Many people have complained about or been bitten by the SV make's
importation of the SHELL variable.  It certainly catches me by surprise
once every six months or so.

Therefore, I reluctantly say that this behaviour is _correct_, and that the
wishes that it would ignore SHELL are _wrong_.

If you need to have environment variables visible to make, the only
reasonable thing to do is to take all of them.  The interpretation rule
is now clear:

	Command line > environment > Makefile > default

Creating a list of exceptions would only encourage entropy.   It has
always been easy enough for me to put 

	setenv SHELL /bin/sh

in my .login to mollify make.

-- 
It's hard to type with asbestos gloves.

{amdahl, sun, mtxinu, cbosgd}!rtech!daveb