R4R: Makefile OS compatibility update

Makefile

@@ -1,11 +1,9 @@
 PACKAGES_NOSIMULATION=$(shell go list ./... | grep -v '/simulation')
 PACKAGES_SIMTEST=$(shell go list ./... | grep '/simulation')
-VERSION := $(shell git describe --tags --long | sed 's/v\(.*\)/\1/')
-BUILD_TAGS = netgo ledger
+VERSION := $(subst v,,$(shell git describe --tags --long))
+BUILD_TAGS = netgo
 BUILD_FLAGS = -tags "${BUILD_TAGS}" -ldflags "-X github.com/cosmos/cosmos-sdk/version.Version=${VERSION}"
-GCC := $(shell command -v gcc 2> /dev/null)
 LEDGER_ENABLED ?= true
-UNAME_S := $(shell uname -s)
 GOTOOLS = \
 	github.com/golang/dep/cmd/dep \
 	github.com/alecthomas/gometalinter \
@@ -20,23 +18,30 @@ ci: get_tools get_vendor_deps install test_cover test_lint test
 ########################################
 ### Build/Install
 
-check-ledger:
 ifeq ($(LEDGER_ENABLED),true)
-   	ifeq ($(UNAME_S),OpenBSD)
-   		$(info "OpenBSD detected, disabling ledger support (https://github.com/cosmos/cosmos-sdk/issues/1988)")
-TMP_BUILD_TAGS := $(BUILD_TAGS)
-BUILD_TAGS = $(filter-out ledger, $(TMP_BUILD_TAGS))
-   	else
-   	   	ifndef GCC
-   	   	   $(error "gcc not installed for ledger support, please install or set LEDGER_ENABLED to false in the Makefile")
-   	   	endif
-   	endif
-else
-TMP_BUILD_TAGS := $(BUILD_TAGS)
-BUILD_TAGS = $(filter-out ledger, $(TMP_BUILD_TAGS))
+  ifeq ($(OS),Windows_NT)
+    GCCEXE = $(shell where gcc.exe 2> NUL)
+    ifeq ($(GCCEXE),)
+      $(error gcc.exe not installed for ledger support, please install or set LEDGER_ENABLED=false)
+    else
+      BUILD_TAGS += ledger
+    endif
+  else
+    UNAME_S = $(shell uname -s)
+    ifeq ($(UNAME_S),OpenBSD)
+      $(warning OpenBSD detected, disabling ledger support (https://github.com/cosmos/cosmos-sdk/issues/1988))
+    else
+      GCC = $(shell command -v gcc 2> /dev/null)
+      ifeq ($(GCC),)
+        $(error gcc not installed for ledger support, please install or set LEDGER_ENABLED=false)
+      else
+        BUILD_TAGS += ledger
+      endif
+    endif
+  endif
 endif
 
-build: check-ledger update_gaia_lite_docs
+build:
 ifeq ($(OS),Windows_NT)
 	go build $(BUILD_FLAGS) -o build/gaiad.exe ./cmd/gaia/cmd/gaiad
 	go build $(BUILD_FLAGS) -o build/gaiacli.exe ./cmd/gaia/cmd/gaiacli
@@ -101,7 +106,7 @@ check_tools:
 
 update_tools:
 	@echo "--> Updating tools to correct version"
-	./scripts/get_tools.sh
+	$(MAKE) -C scripts get_tools
 
 update_dev_tools:
 	@echo "--> Downloading linters (this may take awhile)"
@@ -110,7 +115,7 @@ update_dev_tools:
 
 get_tools:
 	@echo "--> Installing tools"
-	./scripts/get_tools.sh
+	$(MAKE) -C scripts get_tools
 
 get_dev_tools:
 	@echo "--> Downloading linters (this may take awhile)"

PENDING.md

@@ -36,6 +36,7 @@ IMPROVEMENTS
   * [\#2749](https://github.com/cosmos/cosmos-sdk/pull/2749) Add --chain-id flag to gaiad testnet
 
 * Gaia
+ - #2672 [Makefile] Updated for better Windows compatibility and ledger support logic, get_tools was rewritten as a cross-compatible Makefile.
 
 * SDK
  - [x/mock/simulation] [\#2720] major cleanup, introduction of helper objects, reorganization

scripts/Makefile

@@ -0,0 +1,54 @@
+###
+# Find OS and Go environment
+# GO contains the Go binary
+# FS contains the OS file separator
+###
+ifeq ($(OS),Windows_NT)
+  GO := $(shell where go.exe 2> NUL)
+  FS := \\
+else
+  GO := $(shell command -v go 2> /dev/null)
+  FS := /
+endif
+
+ifeq ($(GO),)
+  $(error could not find go. Is it in PATH? $(GO))
+endif
+
+GOPATH ?= $(shell $(GO) env GOPATH)
+GITHUBDIR := $(GOPATH)$(FS)src$(FS)github.com
+
+###
+# Functions
+###
+
+go_get = $(if $(findstring Windows_NT,$(OS)),\
+IF NOT EXIST $(GITHUBDIR)$(FS)$(1)$(FS) ( mkdir $(GITHUBDIR)$(FS)$(1) ) else (cd .) &\
+IF NOT EXIST $(GITHUBDIR)$(FS)$(1)$(FS)$(2)$(FS) ( cd $(GITHUBDIR)$(FS)$(1) && git clone https://github.com/$(1)/$(2) ) else (cd .) &\
+,\
+mkdir -p $(GITHUBDIR)$(FS)$(1) &&\
+(test ! -d $(GITHUBDIR)$(FS)$(1)$(FS)$(2) && cd $(GITHUBDIR)$(FS)$(1) && git clone https://github.com/$(1)/$(2)) || true &&\
+)\
+cd $(GITHUBDIR)$(FS)$(1)$(FS)$(2) && git fetch origin && git checkout -q $(3)
+
+go_install = $(call go_get,$(1),$(2),$(3)) && cd $(GITHUBDIR)$(FS)$(1)$(FS)$(2) && $(GO) install
+
+###
+# get_tools
+###
+all: get_tools
+get_tools: dep gometalinter statik
+
+dep:
+	$(call go_get,golang,dep,22125cfaa6ddc71e145b1535d4b7ee9744fefff2)
+	cd $(GITHUBDIR)$(FS)golang$(FS)dep$(FS)cmd$(FS)dep && $(GO) install
+
+#v2.0.11
+gometalinter:
+	$(call go_install,alecthomas,gometalinter,17a7ffa42374937bfecabfb8d2efbd4db0c26741)
+
+statik:
+	$(call go_install,rakyll,statik,v0.1.5)
+
+.PHONY: all get_tools dep gometalinter statik
+