[bug #60165] Multiple pattern rules with single rule

[anonymous]

URL:
  <https://savannah.gnu.org/bugs/?60165>

                 Summary: Multiple pattern rules with single rule
                 Project: make
            Submitted by: None
            Submitted on: Wed 03 Mar 2021 09:24:53 PM UTC
                Severity: 3 - Normal
              Item Group: Enhancement
                  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:

To shorten the code, I would like to create multiple pattern rules with a
single rule.

E.g. the code below is not working as desired.

$(BUILD)/$(FRONTEND)/%.html \
$(BUILD)/$(FRONTEND)/%.js   \
$(BUILD)/$(FRONTEND)/%.css  \
$(BUILD)/$(FRONTEND)/%.svg  \
$(BUILD)/$(FRONTEND)/%.ico:
        @echo -n "$(FRONTEND) - building $@"
        @$(MD) $(BUILD)/$(FRONTEND)
        @cp $(FRONTEND)/$(@F) $@
        @echo " ...done"

.PHONY:
login: $(BUILD)/$(FRONTEND)/login.html \
       $(BUILD)/$(FRONTEND)/login.js $(BUILD)/$(FRONTEND)/options.js
$(BUILD)/$(FRONTEND)/node.js \
       $(BUILD)/$(FRONTEND)/login.css $(BUILD)/$(FRONTEND)/common.css \
       $(BUILD)/$(FRONTEND)/logo.svg \
       $(BUILD)/$(FRONTEND)/favicon.ico
        @echo -n "$(FRONTEND) - building login"
        @echo " ...done"

# result
# q@odysseus:~/ff$ make login
# frontend - building build/frontend/login.html ...done
# frontend - building build/frontend/options.js ...done
# frontend - building build/frontend/node.js ...done
# frontend - building build/frontend/common.css ...done
# frontend - building build/frontend/logo.svg ...done
# frontend - building build/frontend/favicon.ico ...done
# frontend - building login ...done
# q@odysseus:~/ff$ make login
# frontend - building build/frontend/login.js ...done
# frontend - building login ...done
# q@odysseus:~/ff$ make login
# frontend - building build/frontend/login.css ...done
# frontend - building login ...done




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