bugmake - Bugs: bug #42125, Explicit rules do not support...


bug #42125: Explicit rules do not support multiple targets

Submitted by:  None
Submitted on:  Tue 15 Apr 2014 04:02:29 PM UTC  
Severity: 3 - NormalItem Group: Enhancement
Status: NonePrivacy: Public
Assigned to: NoneOpen/Closed: Open
Component Version: 4.0Operating System: POSIX-Based
Fixed Release: NoneTriage Status: Medium Effort

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Tue 15 Apr 2014 04:21:58 PM UTC, comment #1:

This is not technically a bug. A static pattern rule is a form of explicit rule, not an implicit rule such as pattern rule. Explicit rules do not support multiple targets being created from a single invocation of the recipe, although this is a long-requested enhancement. Looking through the bug tracker I couldn't find an enhancement for it, though, so I'm leaving this one here as that request.

Paul D. Smith <psmith>
Project Administrator
Tue 15 Apr 2014 04:02:29 PM UTC, original submission:

Makefile allows to create pattern rule with multiple targets, like below. This is very handy for rules which generates multiple files at once.

%.h %.c : %.idl
touch $(<:%.idl=%.c) $(<:%.idl=%.h)

I tried to build static pattern rule in similar way, but it do not work - make reports error "multiple target patterns":

$(IDLS:%.idl=%.c) $(IDLS:%.idl=%.h) : %.h %.c : %.idl
touch $(<:%.idl=%.c) $(<:%.idl=%.h)

I tested this using make 4.0 on Linux. Please fix this.



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    Follow 3 latest changes.

    Date Changed By Updated Field Previous Value => Replaced By
    Tue 15 Apr 2014 04:21:58 PM UTCpsmithItem GroupBug=>Enhancement
      Triage StatusNone=>Medium Effort
      SummaryStatic pattern rules do not support multiple targets=>Explicit rules do not support multiple targets

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