我正在尝试通过下载zip文件来安装可执行命令(terraform
),然后使用~/bin
将其解压缩到Makefile
目录中。
仅当terraform
文件不存在时,我才想这样做。
根据GNU Make文档,我认为我应该对管道|
(https://www.gnu.org/software/make/manual/make.html#Prerequisite-Types)使用“仅订购先决条件”,尽管我并不完全了解该文档。
我编写了以下目标规则,目的是在文件make install-tf
已经存在的情况下,以~/bin/terraform
的身份运行它,然后什么也不做然后返回。但是,这不能按预期方式工作,无论文件是否已存在,我始终看到该目标规则的主体正在执行。
terraform
的命令尚不存在时,如何安装Makefile
?这是目标:
TERRAFORM_VERSION=0.11.11
install-tf: | ~/bin/terraform
echo "Installing terraform version ${TERRAFORM_VERSION}"
mkdir -p ~/tmp/
wget https://releases.hashicorp.com/terraform/${TERRAFORM_VERSION}/terraform_${TERRAFORM_VERSION}_linux_amd64.zip -P ~/tmp/
mkdir -p ~/bin/
unzip ~/tmp/terraform_${TERRAFORM_VERSION}_linux_amd64.zip -d ~/bin/
echo "Done installing terraform version ${TERRAFORM_VERSION}"
PATH=~/bin/:$$PATH terraform --version
答案 0 :(得分:2)
以下目标有什么问题?
目标是install-tf
。 make install-tf
将始终运行配方来完成此操作
如果没有install-tf
这样的文件,请定位。配方永远不会创造
该文件。因此,配方将始终运行。
只有在以下情况下,您才需要配方才能制作文件$(HOME)/bin/terraform
不存在。大概是这样:
制作文件(1)
TERRAFORM_VERSION=0.11.11
$(HOME)/bin/terraform:
echo "Installing terraform version ${TERRAFORM_VERSION}"
mkdir -p $(HOME)/tmp/
wget https://releases.hashicorp.com/terraform/${TERRAFORM_VERSION}/terraform_${TERRAFORM_VERSION}_linux_amd64.zip -P $(HOME)/tmp/
mkdir -p $(HOME)/bin/
unzip ~/tmp/terraform_${TERRAFORM_VERSION}_linux_amd64.zip -d $(HOME)/bin/
echo "Done installing terraform version ${TERRAFORM_VERSION}"
PATH=$(HOME)/bin/:$$PATH terraform --version
第一次运行,就像:
$ make
echo "Installing terraform version 0.11.11"
Installing terraform version 0.11.11
mkdir -p /home/imk/tmp/
wget https://releases.hashicorp.com/terraform/0.11.11/terraform_0.11.11_linux_amd64.zip -P /home/imk/tmp/
--2019-01-29 11:09:11-- https://releases.hashicorp.com/terraform/0.11.11/terraform_0.11.11_linux_amd64.zip
Resolving releases.hashicorp.com (releases.hashicorp.com)... 151.101.17.183, 2a04:4e42:4::439
Connecting to releases.hashicorp.com (releases.hashicorp.com)|151.101.17.183|:443... connected.
HTTP request sent, awaiting response... 200 OK
Length: 20971661 (20M) [application/zip]
Saving to: ‘/home/imk/tmp/terraform_0.11.11_linux_amd64.zip’
terraform_0.11.11_l 100%[===================>] 20.00M 8.86MB/s in 2.3s
2019-01-29 11:09:14 (8.86 MB/s) - ‘/home/imk/tmp/terraform_0.11.11_linux_amd64.zip’ saved [20971661/20971661]
mkdir -p /home/imk/bin/
unzip ~/tmp/terraform_0.11.11_linux_amd64.zip -d /home/imk/bin/
Archive: /home/imk/tmp/terraform_0.11.11_linux_amd64.zip
inflating: /home/imk/bin/terraform
echo "Done installing terraform version 0.11.11"
Done installing terraform version 0.11.11
PATH=/home/imk/bin/:$PATH terraform --version
Terraform v0.11.11
第二次像:
$ make
make: '/home/imk/bin/terraform' is up to date.
还有一点改进:
制作文件(2)
TERRAFORM_VERSION := 0.11.11
.PHONY: all clean
all: $(HOME)/bin/terraform
$(HOME)/bin/terraform: | $(HOME)/tmp/ $(HOME)/bin/
echo "Installing terraform version ${TERRAFORM_VERSION}"
wget https://releases.hashicorp.com/terraform/${TERRAFORM_VERSION}/terraform_${TERRAFORM_VERSION}_linux_amd64.zip -P $(HOME)/tmp/
unzip ~/tmp/terraform_${TERRAFORM_VERSION}_linux_amd64.zip -d $(HOME)/bin/
echo "Done installing terraform version ${TERRAFORM_VERSION}"
PATH=$(HOME)/bin/:$$PATH terraform --version
$(HOME)/tmp/ $(HOME)/bin/:
mkdir -p $@
clean:
$(RM) $(HOME)/bin/terraform
运行方式:
$ make clean
rm -f /home/imk/bin/terraform
$ make
echo "Installing terraform version 0.11.11"
Installing terraform version 0.11.11
wget https://releases.hashicorp.com/terraform/0.11.11/terraform_0.11.11_linux_amd64.zip -P /home/imk/tmp/
--2019-01-29 11:38:32-- https://releases.hashicorp.com/terraform/0.11.11/terraform_0.11.11_linux_amd64.zip
Resolving releases.hashicorp.com (releases.hashicorp.com)... 151.101.17.183, 2a04:4e42:4::439
Connecting to releases.hashicorp.com (releases.hashicorp.com)|151.101.17.183|:443... connected.
HTTP request sent, awaiting response... 200 OK
Length: 20971661 (20M) [application/zip]
Saving to: ‘/home/imk/tmp/terraform_0.11.11_linux_amd64.zip.1’
terraform_0.11.11_l 100%[===================>] 20.00M 8.88MB/s in 2.3s
2019-01-29 11:38:34 (8.88 MB/s) - ‘/home/imk/tmp/terraform_0.11.11_linux_amd64.zip.1’ saved [20971661/20971661]
unzip ~/tmp/terraform_0.11.11_linux_amd64.zip -d /home/imk/bin/
Archive: /home/imk/tmp/terraform_0.11.11_linux_amd64.zip
inflating: /home/imk/bin/terraform
echo "Done installing terraform version 0.11.11"
Done installing terraform version 0.11.11
PATH=/home/imk/bin/:$PATH terraform --version
Terraform v0.11.11
$ make
make: Nothing to be done for 'all'.
请注意在以下情况下使用仅订购的先决条件:
$(HOME)/bin/terraform: | $(HOME)/tmp/ $(HOME)/bin/
那是说:在考虑目标$(HOME)/bin/terraform
是否过时之前,先设置$(HOME)/tmp/
和$(HOME)/bin
。
然后考虑$(HOME)/bin/terraform
是否已过期,但不将$(HOME)/tmp/
或$(HOME)/bin
视为前提条件。