bugmake - Bugs: bug #51190, make -n does not show exported...

 
 

bug #51190: make -n does not show exported variables

Submitter:  Robert Durkacz <rdurkacz>
Submitted:  Tue 06 Jun 2017 11:36:42 AM UTC
   
 
Severity:  3 - Normal Item Group:  Enhancement
Status:  None Privacy:  Public
Assigned to:  None Open/Closed:  Open
Component Version:  3.81 Operating System:  Any
Fixed Release:  None Triage Status:  None
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Tue 06 Jun 2017 11:36:42 AM UTC, original submission:  

make -n fails if export is used with recursion by the following argument:

If I run "make some_target" and get an unexpected result, I would do this--
make -n some_target > script
to see what it was make was trying to do. If I run the commands in
"script", one by one or together,
I think I should get the same result as in the original case.
But it turns out not to work properly if "export" is used in the
Makefile. Thus suppose the contents of "script" is--

make target2

and suppose Makefile "exported" var=XXX. Then to give the same result,
"script" really should be--

export var=XXX
make target2

So that is the argument and I am suggesting that if we must have "export" in make, then the
workings of "make -n" should be upgraded to report any exports that
are set up.

Some people who know make very well would consider this to be a enhancement proposal but not a bug fix but users of make like me might reasonably think it axiomatic that make -n when executed as a script should give the same result as make as a job.

Robert Durkacz <rdurkacz>

 

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    Follows 1 latest change.

    Date Changed by Updated Field Previous Value => Replaced by
    2017-06-23 psmith Summarymake -n fails if export is used with recursion make -n does not show exported variables

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