[bug #65917] --dry-run doesn't handle pattern rules with multiple targets correctly

[Hannes Domani]

URL:
  <https://savannah.gnu.org/bugs/?65917>

                 Summary: --dry-run doesn't handle pattern rules with multiple
targets correctly
                   Group: make
               Submitter: ssbssa
               Submitted: Mon 24 Jun 2024 06:23:53 PM UTC
                Severity: 3 - Normal
              Item Group: Bug
                  Status: None
                 Privacy: Public
             Assigned to: None
             Open/Closed: Open
         Discussion Lock: Any
       Component Version: 4.4.1
        Operating System: Any
           Fixed Release: None
           Triage Status: None


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Follow-up Comments:


-------------------------------------------------------
Date: Mon 24 Jun 2024 06:23:53 PM UTC By: Hannes Domani <ssbssa>
Using this file:

all:

alpha.p beta.p:
        touch $@

%.c %.h: %.p
        touch $*.c $*.h

alpha.o: alpha.c alpha.h beta.h
        touch $@

beta.o: beta.c beta.h alpha.h
        touch $@

executable: alpha.o beta.o
        touch $@

all: executable


First create all targets:

$ make
touch alpha.p
touch alpha.c alpha.h
touch beta.p
touch beta.c beta.h
touch alpha.o
touch beta.o
touch executable


Remaking all targets depending on beta.p:

$ touch beta.p
$ make --dry-run
touch beta.c beta.h
touch alpha.o
touch beta.o
touch executable
$ make
touch beta.c beta.h
touch alpha.o
touch beta.o
touch executable

Both with and without --dry-run has the same result.
But trying to do the same with alpha.p:

$ make --dry-run
touch alpha.c alpha.h
touch alpha.o
touch executable
$ make
touch alpha.c alpha.h
touch alpha.o
touch beta.o
touch executable

You see that --dry-run is missing 'touch beta.o'.







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