Re: inconsistency of 'emptiness'?

[gk]

At 10:52 AM 1/28/2003 -0800, gk wrote:
> At 05:23 PM 1/28/2003 +0100, Der Herr Hofrat wrote:
> > I still think it is a shell problem not make
>
>
> Here is some more insight.
> Apparently what is happening is this:
> 1. the shell interprets the command-line as it always does
> 2. make EVALUATES substrings after the equals sign IN THE SHELL AGAIN, 
> before making the makefile variable assignment.

Not quite.
Mystery solved: make evalutes substring after the command-line '=' in the 
MAKEFILE context, NOT in the shell.
This explains the loss of leading white space and the 'double evaluation'.
Example.

address@hidden junk]$ make FOO=' $SHELL'
origin of FOO is: command line
FOO is not empty: FOO=HELL
address@hidden junk]$ make FOO=' $$SHELL'
origin of FOO is: command line
FOO is not empty: FOO=/bin/sh
address@hidden junk]$



- Greg Keraunen
http://www.xmake.org
http://www.xmlmake.com