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zsoldosp/Makefile.bad

Created October 13, 2016 12:46
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Makefile.bad
.PHONY: tag
SHELL=bash
# assuming v0.1.0 is the only tag in the repo
tag: nr_of_existing_tags := $(shell git tag | grep "\<${TAG}\>" | wc -l)
tag:
@echo ${nr_of_existing_tags}
ifeq (1,$(nr_of_existing_tags))
@echo tag ${TAG} already present ${nr_of_existing_tags}
else
@echo tag ${TAG} NOT yet present ${nr_of_existing_tags}
endif
ifeq (0,${nr_of_existing_tags})
@echo tag ${TAG} NOT yet present ${nr_of_existing_tags}
else
@echo tag ${TAG} already present ${nr_of_existing_tags}
endif
Raw
Makefile.good
.PHONY: tag
SHELL=bash
# assuming v0.1.0 is the only tag in the repo
nr_of_existing_tags := $(shell git tag | grep "\<${TAG}\>" | wc -l)
tag:
@echo ${nr_of_existing_tags}
ifeq (1,$(nr_of_existing_tags))
@echo tag ${TAG} already present ${nr_of_existing_tags}
else
@echo tag ${TAG} NOT yet present ${nr_of_existing_tags}
endif
ifeq (0,${nr_of_existing_tags})
@echo tag ${TAG} NOT yet present ${nr_of_existing_tags}
else
@echo tag ${TAG} already present ${nr_of_existing_tags}
endif
Raw
output
$ make -f Makefile.bad TAG=0.1.0
0
tag 0.1.0 NOT yet present 0
tag 0.1.0 already present 0
$ make -f Makefile.bad TAG=0.2.0
0
tag 0.2.0 NOT yet present 0
tag 0.2.0 already present 0
$ make -f Makefile.bad TAG=0.1.0
0
tag 0.1.0 NOT yet present 0
tag 0.1.0 NOT yet present 0
$ make -f Makefile.bad TAG=0.2.0
0
tag 0.2.0 NOT yet present 0
tag 0.2.0 NOT yet present 0
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