Keep Makefile simple

Makefile

@@ -3,8 +3,7 @@ NAME := kimsufi-notifier
 
 PKG := ${GROUP}/${NAME}
 
-BUILD_DIR := build
-BIN := ${BUILD_DIR}/${NAME}
+BIN := ${NAME}
 
 PKG_LIST := $(shell go list ${PKG}/... | grep -v /vendor/)
 
@@ -16,23 +15,15 @@ LD_FLAGS := -s -w \
 	-X github.com/prometheus/common/version.BuildUser=$(shell whoami)@$(shell hostname) \
 	-X github.com/prometheus/common/version.BuildDate=$(shell date --utc +%FT%T)
 
-all: linux linux-arm darwin darwin-arm
+all: build
 
-linux:
-	GOOS=linux GOARCH=amd64 CGO_ENABLED=1 \
-			 go build -v -o ${BIN}_linux_amd64 -ldflags="${LD_FLAGS}" ${PKG}
+build:
+	CGO_ENABLED=1 \
+			 go build -v -o ${BIN} -ldflags="${LD_FLAGS}" ${PKG}
 
 linux-arm:
 	GOOS=linux GOARCH=arm64 CGO_ENABLED=1 CC=aarch64-linux-gnu-gcc CXX=aarch64-linux-gnu-g++ \
-			 go build -v -o ${BIN}_linux_arm64 -ldflags="-extldflags=-static ${LD_FLAGS}" ${PKG}
-
-darwin:
-	GOOS=darwin GOARCH=amd64 CGO_ENABLED=1 \
-			 go build -v -o ${BIN}_darwin_amd64 -ldflags="${LD_FLAGS}" ${PKG}
-
-darwin-arm:
-	GOOS=darwin GOARCH=arm64 CGO_ENABLED=1 \
-			 go build -v -o ${BIN}_darwin_arm64 -ldflags="${LD_FLAGS}" ${PKG}
+			 go build -v -o ${BIN} -ldflags="-extldflags=-static ${LD_FLAGS}" ${PKG}
 
 install:
 	GOOS=${OSTYPE} go install -v -ldflags="${LD_FLAGS}" ${PKG}
@@ -51,6 +42,6 @@ nancy:
 	go list -json -m all | nancy sleuth
 
 clean:
-	rm -rf ${BUILD_DIR}
+	rm -rf ${BIN}
 
-.PHONY: build install test vet lint clean
+.PHONY: build linux-arm install test vet lint nancy clean