Makefile: simplify and clean-up (cosmos#7453)

The simd target is removed in favor of build/install targets:

- build runs go build ./... with all appropriate flags and args.
- install runs go install ./... with all approriate flags and args.

localnet-start now depends on build-linux [1].

[1] This should hopefully put a smile on @alexanderbez's face!

Remove unused install scripts and snapcraft build files.

Dockerfile

@@ -23,7 +23,7 @@ WORKDIR /go/src/github.com/cosmos/cosmos-sdk
 COPY . .
 
 # install simapp, remove packages
-RUN make simd-linux
+RUN make build-linux
 
 
 # Final image

Makefile

@@ -97,15 +97,17 @@ include contrib/devtools/Makefile
 ###                                  Build                                  ###
 ###############################################################################
 
-build: go.sum
-	go build -mod=readonly ./...
+BUILD_TARGETS := build install
 
-simd:
-	mkdir -p $(BUILDDIR)
-	go build -mod=readonly $(BUILD_FLAGS) -o $(BUILDDIR) ./simapp/simd
+build: BUILD_ARGS=-o $(BUILDDIR)/
+build-linux:
+	GOOS=linux GOARCH=amd64 LEDGER_ENABLED=false $(MAKE) build
 
-simd-linux: go.sum
-	$(MAKE) simd GOOS=linux GOARCH=amd64 LEDGER_ENABLED=false
+$(BUILD_TARGETS): go.sum $(BUILDDIR)/
+	go $@ -mod=readonly $(BUILD_FLAGS) $(BUILD_ARGS) ./...
+
+$(BUILDDIR)/:
+	mkdir -p $(BUILDDIR)/
 
 build-simd-all: go.sum
 	$(if $(shell docker inspect -f '{{ .Id }}' cosmossdk/rbuilder 2>/dev/null),$(info found image cosmossdk/rbuilder),docker pull cosmossdk/rbuilder:latest)
@@ -119,7 +121,7 @@ build-simd-all: go.sum
         --name latest-build cosmossdk/rbuilder:latest
 	docker cp -a latest-build:/home/builder/artifacts/ $(CURDIR)/
 
-build-simd-linux: go.sum
+build-simd-linux: go.sum $(BUILDDIR)/
 	$(if $(shell docker inspect -f '{{ .Id }}' cosmossdk/rbuilder 2>/dev/null),$(info found image cosmossdk/rbuilder),docker pull cosmossdk/rbuilder:latest)
 	docker rm latest-build || true
 	docker run --volume=$(CURDIR):/sources:ro \
@@ -130,13 +132,12 @@ build-simd-linux: go.sum
         --env LEDGER_ENABLED=false \
         --name latest-build cosmossdk/rbuilder:latest
 	docker cp -a latest-build:/home/builder/artifacts/ $(CURDIR)/
-	mkdir -p $(BUILDDIR)
 	cp artifacts/simd-*-linux-amd64 $(BUILDDIR)/simd
 
 cosmovisor:
 	$(MAKE) -C cosmovisor cosmovisor
 
-.PHONY: build simd simd-linux build-simd-all build-simd-linux cosmovisor
+.PHONY: build build-linux build-simd-all build-simd-linux cosmovisor
 
 mocks: $(MOCKS_DIR)
 	mockgen -source=client/account_retriever.go -package mocks -destination tests/mocks/account_retriever.go
@@ -152,13 +153,7 @@ mocks: $(MOCKS_DIR)
 $(MOCKS_DIR):
 	mkdir -p $(MOCKS_DIR)
 
-distclean: clean
-	rm -rf \
-    gitian-build-darwin/ \
-    gitian-build-linux/ \
-    gitian-build-windows/ \
-    .gitian-builder-cache/
-
+distclean: clean tools-clean
 clean:
 	rm -rf \
     $(BUILDDIR)/ \
@@ -171,15 +166,10 @@ clean:
 ###                          Tools & Dependencies                           ###
 ###############################################################################
 
-go-mod-cache: go.sum
-	@echo "--> Download go modules to local cache"
-	@go mod download
-.PHONY: go-mod-cache
-
 go.sum: go.mod
-	@echo "--> Ensure dependencies have not been modified"
-	@go mod verify
-	@go mod tidy
+	echo "Ensure dependencies have not been modified ..." >&2
+	go mod verify
+	go mod tidy
 
 ###############################################################################
 ###                              Documentation                              ###
@@ -459,7 +449,7 @@ proto-update-deps:
 ###############################################################################
 
 # Run a 4-node testnet locally
-localnet-start: $(BUILDDIR)/simd localnet-stop
+localnet-start: build-linux localnet-stop
 	$(if $(shell docker inspect -f '{{ .Id }}' cosmossdk/simd-env 2>/dev/null),$(info found image cosmossdk/simd-env),$(MAKE) -C contrib/images simd-env)
 	if ! [ -f build/node0/simd/config/genesis.json ]; then docker run --rm \
 		--user $(shell id -u):$(shell id -g) \

build.sh

@@ -24,7 +24,7 @@ for os in ${TARGET_OS} ; do
     for arch in ${archs} ; do
         make clean
         GOOS="${os}" GOARCH="${arch}" GOROOT_FINAL="$(go env GOROOT)" \
-        make ${APP} \
+        make build \
             LDFLAGS=-buildid=${VERSION} \
             VERSION=${VERSION} \
             COMMIT=${COMMIT} \