From a0346000249541406dc9b84458af567ef8a58f2d Mon Sep 17 00:00:00 2001
From: Jae Kwon <jae@tendermint.com>
Date: Fri, 5 Jan 2018 22:35:57 -0800
Subject: [PATCH] Revert "Changes to achieve a standardized build process and
 deterministic builds"

---
 Makefile              | 79 +++++++------------------------------------
 docs/install.rst      | 13 -------
 scripts/dist_build.sh | 28 +++++++++++++--
 3 files changed, 38 insertions(+), 82 deletions(-)

diff --git a/Makefile b/Makefile
index 2a4b14e3f..2aed1acf4 100644
--- a/Makefile
+++ b/Makefile
@@ -1,34 +1,13 @@
-GOTOOLS := \
+GOTOOLS = \
 	github.com/mitchellh/gox \
 	github.com/Masterminds/glide \
 	github.com/tcnksm/ghr \
 	gopkg.in/alecthomas/gometalinter.v2
-GO_MIN_VERSION := 1.9.2
-PACKAGES := $(shell go list ./... | grep -v '/vendor/')
-BUILD_TAGS ?= tendermint
-TMHOME ?= $(HOME)/.tendermint
-GOPATH ?= $(shell go env GOPATH)
-GOROOT ?= $(shell go env GOROOT)
-GOGCCFLAGS ?= $(shell go env GOGCCFLAGS)
-#LDFLAGS_EXTRA ?= -w -s
-XC_ARCH ?= 386 amd64 arm
-XC_OS ?= solaris darwin freebsd linux windows
-XC_OSARCH ?= !darwin/arm !solaris/amd64 !freebsd/amd64
-BUILD_OUTPUT ?= ./build/{{.OS}}_{{.Arch}}/tendermint
-
-GOX_FLAGS = -os="$(XC_OS)" -arch="$(XC_ARCH)" -osarch="$(XC_OSARCH)" -output="$(BUILD_OUTPUT)"
-ifeq ($(BUILD_FLAGS_RACE),YES)
-RACEFLAG=-race
-else
-RACEFLAG=
-endif
-BUILD_FLAGS = -asmflags "-trimpath $(GOPATH)" -gcflags "-trimpath $(GOPATH)" -tags "$(BUILD_TAGS)" -ldflags "-X github.com/tendermint/tendermint/version.GitCommit=$(shell git rev-parse --short=8 HEAD) $(LDFLAGS_EXTRA)" $(RACEFLAG)
-GO_VERSION:=$(shell go version | grep -o '[[:digit:]]\+.[[:digit:]]\+.[[:digit:]]\+')
-#Check that that minor version of GO meets the minimum required
-GO_MINOR_VERSION := $(shell grep -o \.[[:digit:]][[:digit:]]*\. <<< $(GO_VERSION) | grep -o [[:digit:]]* )
-GO_MIN_MINOR_VERSION := $(shell grep -o \.[[:digit:]][[:digit:]]*\. <<< $(GO_MIN_VERSION) | grep -o [[:digit:]]* )
-GO_MINOR_VERSION_CHECK := $(shell test $(GO_MINOR_VERSION) -ge $(GO_MIN_MINOR_VERSION) && echo YES)
-
+GOTOOLS_CHECK = gox glide ghr gometalinter.v2
+PACKAGES=$(shell go list ./... | grep -v '/vendor/')
+BUILD_TAGS?=tendermint
+TMHOME = $${TMHOME:-$$HOME/.tendermint}
+BUILD_FLAGS = -ldflags "-X github.com/tendermint/tendermint/version.GitCommit=`git rev-parse --short HEAD`"
 
 all: check build test install metalinter
 
@@ -38,61 +17,27 @@ check: check_tools get_vendor_deps
 ########################################
 ### Build
 
-build_xc: check_tools
-	$(shell which gox) $(BUILD_FLAGS) $(GOX_FLAGS) ./cmd/tendermint/
-
 build:
-ifeq ($(OS),Windows_NT)
-	make build_xc XC_ARCH=amd64 XC_OS=windows BUILD_OUTPUT=$(GOPATH)/bin/tendermint
-else
-	make build_xc XC_ARCH=amd64 XC_OS="$(shell uname -s)" BUILD_OUTPUT=$(GOPATH)/bin/tendermint
-endif
+	go build $(BUILD_FLAGS) -o build/tendermint ./cmd/tendermint/
 
 build_race:
-#TODO: Wait for this to be merged: https://github.com/mitchellh/gox/pull/105 Then switch over to make build and remove the go build line.
-#	make build BUILD_FLAGS_RACE=YES
-	$(shell which go) build $(BUILD_FLAGS) -race -o "$(BUILD_OUTPUT)" ./cmd/tendermint/
+	go build -race $(BUILD_FLAGS) -o build/tendermint ./cmd/tendermint
 
 # dist builds binaries for all platforms and packages them for distribution
 dist:
 	@BUILD_TAGS='$(BUILD_TAGS)' sh -c "'$(CURDIR)/scripts/dist.sh'"
 
 install:
-	make build
+	go install $(BUILD_FLAGS) ./cmd/tendermint
 
 
 ########################################
 ### Tools & dependencies
 
 check_tools:
-ifeq ($(GO_VERSION),)
-	$(error go not found)
-endif
-#Check minimum required go version
-ifneq ($(GO_VERSION),$(GO_MIN_VERSION))
-	$(warning WARNING: build will not be deterministic. go version should be $(GO_MIN_VERSION))
-ifneq ($(GO_MINOR_VERSION_CHECK),YES)
-	$(error ERROR: The minor version of Go ($(GO_VERSION)) is lower than the minimum required ($(GO_MIN_VERSION)))
-endif
-endif
-#-fdebug-prefix-map switches the temporary, randomized workdir name in the binary to a static text
-ifneq ($(findstring -fdebug-prefix-map,$(GOGCCFLAGS)),-fdebug-prefix-map)
-	$(warning WARNING: build will not be deterministic. The compiler does not support the '-fdebug-prefix-map' flag.)
-endif
-#GOROOT string is copied into the binary. For deterministic builds, we agree to keep it at /usr/local/go. (Default for golang:1.9.2 docker image, linux and osx.)
-ifneq ($(GOROOT),/usr/local/go)
-	$(warning WARNING: build will not be deterministic. GOROOT should be set to /usr/local/go)
-endif
-#GOPATH string is copied into the binary. Although the -trimpath flag tries to eliminate it, it doesn't do it everywhere in Go 1.9.2. For deterministic builds we agree to keep it at /go. (Default for golang:1.9.2 docker image.)
-ifneq ($(GOPATH),/go)
-	$(warning WARNING: build will not be deterministic. GOPATH should be set to /go)
-endif
-#External dependencies defined in GOTOOLS are built with get_tools. If they are already available on the system (for exmaple using a package manager), then get_tools might not be necessary.
-ifneq ($(findstring $(GOPATH)/bin,$(PATH)),$(GOPATH)/bin)
-	$(warning WARNING: PATH does not contain GOPATH/bin. Some external dependencies might be unavailable.) 
-endif
-# https://stackoverflow.com/a/25668869
-	@echo "Found tools: $(foreach tool,$(notdir $(GOTOOLS)),$(if $(shell which $(tool)),$(tool),$(error "No $(tool) in PATH. Add GOPATH/bin to PATH and run 'make get_tools'")))"
+	@# https://stackoverflow.com/a/25668869
+	@echo "Found tools: $(foreach tool,$(GOTOOLS_CHECK),\
+        $(if $(shell which $(tool)),$(tool),$(error "No $(tool) in PATH")))"
 
 get_tools:
 	@echo "--> Installing tools"
diff --git a/docs/install.rst b/docs/install.rst
index 9edc051a6..64fae4cdc 100644
--- a/docs/install.rst
+++ b/docs/install.rst
@@ -6,19 +6,6 @@ From Binary
 
 To download pre-built binaries, see the `Download page <https://tendermint.com/download>`__.
 
-From Source using Docker
-------------------------
-
-If you have docker running, all you need is the ``golang`` image to build tendermint.
-If you don't, you can get help setting it up `here <https://docs.docker.com/engine/installation/>`__.
-
-::
-    mkdir $HOME/tendermintbin
-    docker run --rm -it -v $HOME/tendermintbin:/go/bin:Z golang:1.9.2 /bin/bash -c "go-wrapper download github.com/tendermint/tendermint/cmd/tendermint ; make -C /go/src/github.com/tendermint/tendermint get_tools get_vendor_deps build_cc"
-
-You will find the ``tendermint`` binaries for different architectures and operating systems in your ``$HOME/tendermintbin`` folder.
-
-
 From Source
 -----------
 
diff --git a/scripts/dist_build.sh b/scripts/dist_build.sh
index f1d8779f6..587199e02 100755
--- a/scripts/dist_build.sh
+++ b/scripts/dist_build.sh
@@ -9,8 +9,32 @@ DIR="$( cd -P "$( dirname "$SOURCE" )/.." && pwd )"
 # Change into that dir because we expect that.
 cd "$DIR"
 
-# Make sure build tools are available, get VENDORED dependencies and build
-make get_tools get_vendor_deps build_xc
+# Get the git commit
+GIT_COMMIT="$(git rev-parse --short HEAD)"
+GIT_IMPORT="github.com/tendermint/tendermint/version"
+
+# Determine the arch/os combos we're building for
+XC_ARCH=${XC_ARCH:-"386 amd64 arm"}
+XC_OS=${XC_OS:-"solaris darwin freebsd linux windows"}
+
+# Make sure build tools are available.
+make tools
+
+# Get VENDORED dependencies
+make get_vendor_deps
+
+# Build!
+# ldflags: -s Omit the symbol table and debug information.
+#	         -w Omit the DWARF symbol table.
+echo "==> Building..."
+"$(which gox)" \
+		-os="${XC_OS}" \
+		-arch="${XC_ARCH}" \
+		-osarch="!darwin/arm !solaris/amd64 !freebsd/amd64" \
+		-ldflags "-s -w -X ${GIT_IMPORT}.GitCommit=${GIT_COMMIT}" \
+		-output "build/pkg/{{.OS}}_{{.Arch}}/tendermint" \
+		-tags="${BUILD_TAGS}" \
+		github.com/tendermint/tendermint/cmd/tendermint
 
 # Zip all the files.
 echo "==> Packaging..."