[ILUG] Logging and displaying output of shell commands

[Brian Foster]

this seems to have gone missing from my posting... ;-\

 a slightly different trick, analogous to having the
 user type:

    make some_rule  2>&1 |  tee -a FILE

 is to do that within the Makefile, something like:

    some_rule:
    ifeq($(strip $V),2)
            $(MAKE) V=1 $@  2>&1 | tee -a my_log.log
    else
            some_cmd
    endif

 or variations on the idea, such as:

    ifeq($(strip $V),2)
    rule1 rule2 rule3 ... ruleN:
            $(MAKE) V=1 $@  2>&1 | tee -a my_log.log
    else
    rule1:
            cmd1 ...
    rule2:
            cmd2 ...
    rule3:
            cmd3 ...
    ...
    ruleN:
            cmdN ...
    endif

 not tested, and I probably really do have the syntax
 messed up now.  of course, you'd still probably want
 to do one of the previously-posted tricks (i.e., use
 `pipefail', `PIPESTATUS', &tc) for the V = 2 case of
 `$(MAKE) V=1 ...' so the sub-`make's exit(2)-status
 isn't lost.

cheers!
	-blf-

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