COMMIT   := $(shell git rev-parse HEAD)
BRANCH   := $(shell git rev-parse --abbrev-ref HEAD)
VERSION  := $(shell git describe --tags --always)
CHANGES  := $(shell git status -s | wc -l)
TIME     := $(shell date +%s)
HOSTNAME := $(shell hostname)
LDFLAGS  := -X 'trbot/utils/consts.Commit=$(COMMIT)' \
            -X 'trbot/utils/consts.Branch=$(BRANCH)' \
            -X 'trbot/utils/consts.Version=$(VERSION)' \
            -X 'trbot/utils/consts.Changes=$(CHANGES)' \
            -X 'trbot/utils/consts.BuildAt=$(TIME)' \
            -X 'trbot/utils/consts.BuildOn=$(HOSTNAME)'

build:
	go build -ldflags "$(LDFLAGS)"