Update build (#1081)

* Update build

* Only use CGO when building non-Linux.
* Update build to Go 1.11
* Use tab indenting consistently.

Signed-off-by: Ben Kochie <superq@gmail.com>

.circleci/config.yml

@@ -4,7 +4,7 @@ version: 2
 jobs:
   test:
     docker:
-    - image: circleci/golang:1.10
+    - image: circleci/golang:1.11
     working_directory: /go/src/github.com/prometheus/node_exporter
 
     steps:
@@ -27,13 +27,14 @@ jobs:
     working_directory: /home/circleci/.go_workspace/src/github.com/prometheus/node_exporter
 
     environment:
-      DOCKER_TEST_IMAGE_NAME: quay.io/prometheus/golang-builder:1.10-base
+      DOCKER_TEST_IMAGE_NAME: quay.io/prometheus/golang-builder:1.11-base
       REPO_PATH: github.com/prometheus/node_exporter
 
     steps:
     - checkout
     - run: make promu
-    - run: promu crossbuild -v --go 1.10
+    - run: promu --config .promu-no-cgo.yml crossbuild -v --go 1.11
+    - run: promu --config .promu-cgo.yml crossbuild -v --go 1.11
     - persist_to_workspace:
         root: .
         paths:
@@ -58,7 +59,7 @@ jobs:
 
   docker_hub_master:
     docker:
-    - image: circleci/golang:1.10
+    - image: circleci/golang:1.11
     working_directory: /go/src/github.com/prometheus/node_exporter
 
     steps:
@@ -77,7 +78,7 @@ jobs:
 
   docker_hub_release_tags:
     docker:
-    - image: circleci/golang:1.10
+    - image: circleci/golang:1.11
     working_directory: /go/src/github.com/prometheus/node_exporter
 
     steps:

.promu-cgo.yml

@@ -0,0 +1,24 @@
+go:
+    cgo: true
+repository:
+    path: github.com/prometheus/node_exporter
+build:
+    binaries:
+        - name: node_exporter
+    flags: -a -tags 'netgo static_build'
+    ldflags: |
+        -X {{repoPath}}/vendor/github.com/prometheus/common/version.Version={{.Version}}
+        -X {{repoPath}}/vendor/github.com/prometheus/common/version.Revision={{.Revision}}
+        -X {{repoPath}}/vendor/github.com/prometheus/common/version.Branch={{.Branch}}
+        -X {{repoPath}}/vendor/github.com/prometheus/common/version.BuildUser={{user}}@{{host}}
+        -X {{repoPath}}/vendor/github.com/prometheus/common/version.BuildDate={{date "20060102-15:04:05"}}
+tarball:
+    files:
+        - LICENSE
+        - NOTICE
+crossbuild:
+    platforms:
+        - darwin/amd64
+        - darwin/386
+        - netbsd/amd64
+        - netbsd/386

.promu-no-cgo.yml

@@ -1,5 +1,3 @@
-go:
-    cgo: true
 repository:
     path: github.com/prometheus/node_exporter
 build:
@@ -20,10 +18,6 @@ crossbuild:
     platforms:
         - linux/amd64
         - linux/386
-        - darwin/amd64
-        - darwin/386
-        - netbsd/amd64
-        - netbsd/386
         - linux/arm
         - linux/arm64
         - linux/mips

Makefile

@@ -26,24 +26,41 @@ DOCKERFILE              ?= Dockerfile
 STATICCHECK_IGNORE =
 
 ifeq ($(OS),Windows_NT)
-    OS_detected := Windows
+	OS_detected := Windows
 else
-    OS_detected := $(shell uname -s)
+	OS_detected := $(shell uname -s)
 endif
 
 ifeq ($(GOHOSTARCH),amd64)
 	ifeq ($(OS_detected),$(filter $(OS_detected),Linux FreeBSD Darwin Windows))
-                # Only supported on amd64
-                test-flags := -race
-        endif
+		# Only supported on amd64
+		test-flags := -race
+	endif
 endif
 
 ifeq ($(OS_detected), Linux)
-    test-e2e := test-e2e
+	test-e2e := test-e2e
 else
-    test-e2e := skip-test-e2e
+	test-e2e := skip-test-e2e
 endif
 
+# Use CGO for non-Linux builds.
+ifeq ($(GOOS), linux)
+	PROMU_CONF ?= .promu-no-cgo.yml
+else
+	ifndef GOOS
+		ifeq ($(OS_detected), Linux)
+			PROMU_CONF ?= .promu-no-cgo.yml
+		else
+			PROMU_CONF ?= .promu-cgo.yml
+		endif
+	else
+		PROMU_CONF ?= .promu-cgo.yml
+	endif
+endif
+
+PROMU := $(FIRST_GOPATH)/bin/promu --config $(PROMU_CONF)
+
 e2e-out = collector/fixtures/e2e-output.txt
 ifeq ($(MACH), ppc64le)
 	e2e-out = collector/fixtures/e2e-64k-page-output.txt