My Makefiles#
You can find some of my Makefiles I use for different purposes in my toolbox repository
Run shell commands#
DOCKER_GID=$(shell getent group docker | cut -d: -f3)
Assign output of shell commands to a variable#
$(eval NAME=$(shell hostname))
echo "Hostname is $(NAME)"
echo#
Prefixing with @ does not print out the command itself
@echo "Spinning up the cluster"
kind create cluster --config kind.yaml
User defined function#
define get_conf
$(shell yq -r .$(1) conf.yml)
endef
NAME:=$(call get_conf,name)
Concat variables#
BUILDARGS=--build-arg uid=$(UID) --build-arg gid=$(GID)
BUILDARGS:=$(BUILDARGS) --build-arg docker_gid=$(DOCKER_GID)
BUILDARGS:=$(BUILDARGS) --build-arg name=$(NAME)
Concat string
EDITOR += -c 'set syntax=yaml' -
IF#
Simple if
ifeq ($(MOUNT_AWS_FOLDER), true)
MOUNT:=${MOUNT} -v $$HOME/.aws/:/home/${NAME}/.aws
endif
Bash oneliner
@if [ "$(TARGET)" == "" ]; then echo "Missing target variable - run make targets for possible values"; exit 1; fi
Search for string
EDITOR:=$(shell type -p nvim || echo vim)
ifneq (,$(findstring vim,$(EDITOR)))
EDITOR += -c 'set syntax=yaml' -
else
EDITOR:=less
endif
Wait for something#
@while [[ "$$(kubectl get -n kube-system deployment/sealed-secrets-controller -o json | jq '.status.readyReplicas')" != "1" ]]; do sleep 5; done
Help message#
.PHONY: help
help: ## This help.
@awk 'BEGIN {FS = ":.*?## "} /^[a-zA-Z_-]+:.*?## / {printf "\033[36m%-30s\033[0m %s\n", $$1, $$2}' $(MAKEFILE_LIST)
.DEFAULT_GOAL := help
This allows something like the following where everything after ## is printed as help message
build: ## Build the container
@echo 'Building image'
docker build $(BUILDARGS) -t $(NAME) .