[bug #32042] Rules with multiple outputs and intermediate chains

[anonymous]

URL:
  <http://savannah.gnu.org/bugs/?32042>

                 Summary: Rules with multiple outputs and intermediate chains
                 Project: make
            Submitted by: None
            Submitted on: Mon 03 Jan 2011 07:32:15 PM UTC
                Severity: 3 - Normal
              Item Group: Bug
                  Status: None
                 Privacy: Public
             Assigned to: None
             Open/Closed: Open
         Discussion Lock: Any
       Component Version: None
        Operating System: None
           Fixed Release: None
           Triage Status: None

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Details:

In the case below, if both output files from a pattern rule are later used as
prerequisites, only the first one will be treated as intermediate.
 
The steps to reproduce are below.
 
Expected result of make all: foo.jkl is created, and all other files are
created then deleted
Actual result of make all: foo.jkl is created; foo.abc, foo.def, and foo.ghi
are created; foo.abc and foo.def are deleted; foo.ghi is NOT deleted


all: foo.jkl 

%.abc:
        date > $@

%.def %.ghi: %.abc
        @echo "Generating $*.def and $*.ghi from $*.abc"
        @sleep 2
        @touch $*.def $*.ghi

%.jkl: %.def %.ghi
        cat $^ > $@
clean:
        rm -f *.*


 
When I change the makefile such that the pattern rule that creates %.def and
%.ghi is created through the use of a template and $(eval $(call MY_TEMPLATE))
as in section 8.8 of the GNU Make Manual, neither foo.def nor foo.ghi are
deleted.

This behavior seems to be inconsistent with the description of how implicit
chains should be handled (in section 10.4 of the manual).






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