Install the latest version of terraform locally with GNU Make.

Makefile

OS := linux
ifeq (${shell uname},Darwin)
	OS := darwin
endif
ARCH := amd64

help: ## show help message
	@awk 'BEGIN {FS = ":.*##"; printf "\nUsage:\n  make \033[36m\033[0m\n"} /^[$$()% a-zA-Z./_-]+:.*?##/ { printf "  \033[36m%-16s\033[0m %s\n", $$1, $$2 } /^##@/ { printf "\n\033[1m%s\033[0m\n", substr($$0, 5) } ' $(MAKEFILE_LIST)

bin:
	mkdir -p $@

bin/terraform: LATEST := ${shell curl --silent "https://api.github.com/repos/hashicorp/terraform/releases/latest" | jq ".. .tag_name? // empty" | tr -d '"v'}
bin/terraform: URL := https://releases.hashicorp.com/terraform/${LATEST}/terraform_${LATEST}_${OS}_${ARCH}.zip
bin/terraform: bin ## install terraform
	curl -L ${URL} --output $@.zip
	unzip -o $@.zip -d ${@D}
	rm -f $@.zip
	@echo 'export PATH=${@D}:$$PATH # remember to add to your PATH'