Makefile directive interpretation

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0
down vote

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I am trying to reverse this Makefile.

However in the folowing lines:

install-packer: tmp/packer_$(PACKER_VERSION).zip

    mkdir -p ~/bin

    unzip -o -d ~/bin $<

    chmod +x $(PACKER)

    @echo Packer $(PACKER_VERSION) was successfully installed!



# Install packer only if it doesn't exist

$(PACKER):

    @$(MAKE) install-packer



tmp/packer_$(PACKER_VERSION).zip:

    curl -fsSLo $@ 'https://releases.hashicorp.com/packer/$(PACKER_VERSION)/packer_$(PACKER_VERSION)_$(UNAME)_amd64.zip'

    @echo Downloaded new Packer version: $(PACKER_VERSION)!

I am unable to understand the following directive/dependency:

# Install packer only if it doesn't exist

$(PACKER):

    @$(MAKE) install-packer

How it will

install packer only if it doesn't exist

asked 19 hours ago

pkaramol

1033

add a comment |

up vote
0
down vote

favorite

I am trying to reverse this Makefile.

However in the folowing lines:

install-packer: tmp/packer_$(PACKER_VERSION).zip

    mkdir -p ~/bin

    unzip -o -d ~/bin $<

    chmod +x $(PACKER)

    @echo Packer $(PACKER_VERSION) was successfully installed!



# Install packer only if it doesn't exist

$(PACKER):

    @$(MAKE) install-packer



tmp/packer_$(PACKER_VERSION).zip:

    curl -fsSLo $@ 'https://releases.hashicorp.com/packer/$(PACKER_VERSION)/packer_$(PACKER_VERSION)_$(UNAME)_amd64.zip'

    @echo Downloaded new Packer version: $(PACKER_VERSION)!

I am unable to understand the following directive/dependency:

# Install packer only if it doesn't exist

$(PACKER):

    @$(MAKE) install-packer

How it will

install packer only if it doesn't exist

asked 19 hours ago

pkaramol

1033

add a comment |

up vote
0
down vote

favorite

I am trying to reverse this Makefile.

However in the folowing lines:

install-packer: tmp/packer_$(PACKER_VERSION).zip

    mkdir -p ~/bin

    unzip -o -d ~/bin $<

    chmod +x $(PACKER)

    @echo Packer $(PACKER_VERSION) was successfully installed!



# Install packer only if it doesn't exist

$(PACKER):

    @$(MAKE) install-packer



tmp/packer_$(PACKER_VERSION).zip:

    curl -fsSLo $@ 'https://releases.hashicorp.com/packer/$(PACKER_VERSION)/packer_$(PACKER_VERSION)_$(UNAME)_amd64.zip'

    @echo Downloaded new Packer version: $(PACKER_VERSION)!

I am unable to understand the following directive/dependency:

# Install packer only if it doesn't exist

$(PACKER):

    @$(MAKE) install-packer

How it will

install packer only if it doesn't exist

asked 19 hours ago

pkaramol

1033

I am trying to reverse this Makefile.

However in the folowing lines:

install-packer: tmp/packer_$(PACKER_VERSION).zip

    mkdir -p ~/bin

    unzip -o -d ~/bin $<

    chmod +x $(PACKER)

    @echo Packer $(PACKER_VERSION) was successfully installed!



# Install packer only if it doesn't exist

$(PACKER):

    @$(MAKE) install-packer



tmp/packer_$(PACKER_VERSION).zip:

    curl -fsSLo $@ 'https://releases.hashicorp.com/packer/$(PACKER_VERSION)/packer_$(PACKER_VERSION)_$(UNAME)_amd64.zip'

    @echo Downloaded new Packer version: $(PACKER_VERSION)!

I am unable to understand the following directive/dependency:

# Install packer only if it doesn't exist

$(PACKER):

    @$(MAKE) install-packer

How it will

install packer only if it doesn't exist

makefile

asked 19 hours ago

pkaramol

1033

asked 19 hours ago

pkaramol

1033

asked 19 hours ago

pkaramol

1033

asked 19 hours ago

pkaramol

1033

asked 19 hours ago

pkaramol

1033

add a comment |

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