Let's try fixing "netgo" again

Since "go test" doesn't seem to support "-installsuffix" as quite the same perfect solution that "go build" is happy to let it be, let's just switch those crappy old "integration/" tests to use our separate static dockerinit binary so we don't have to worry about compiling the entire test harness statically. 👍

Signed-off-by: Andrew "Tianon" Page <admwiggin@gmail.com>

Dockerfile

@@ -97,9 +97,6 @@ RUN cd /usr/local/go/src \
 			./make.bash --no-clean 2>&1; \
 	done
 
-# Reinstall standard library with netgo
-RUN go clean -i net && go install -tags netgo std
-
 # We still support compiling with older Go, so need to grab older "gofmt"
 ENV GOFMT_VERSION 1.3.3
 RUN curl -sSL https://storage.googleapis.com/golang/go${GOFMT_VERSION}.$(go env GOOS)-$(go env GOARCH).tar.gz | tar -C /go/bin -xz --strip-components=2 go/bin/gofmt

project/make.sh

@@ -48,13 +48,11 @@ DEFAULT_BUNDLES=(
 	binary
 
 	test-unit
-	test-integration
 	test-integration-cli
 	test-docker-py
 
 	dynbinary
-	dyntest-unit
-	dyntest-integration
+	test-integration
 
 	cover
 	cross
@@ -113,7 +111,8 @@ fi
 EXTLDFLAGS_STATIC='-static'
 # ORIG_BUILDFLAGS is necessary for the cross target which cannot always build
 # with options like -race.
-ORIG_BUILDFLAGS=( -a -tags "netgo static_build $DOCKER_BUILDTAGS" )
+ORIG_BUILDFLAGS=( -a -tags "netgo static_build $DOCKER_BUILDTAGS" -installsuffix netgo )
+# see https://github.com/golang/go/issues/9369#issuecomment-69864440 for why -installsuffix is necessary here
 BUILDFLAGS=( $BUILDFLAGS "${ORIG_BUILDFLAGS[@]}" )
 # Test timeout.
 : ${TIMEOUT:=30m}

project/make/.dockerinit

@@ -0,0 +1,29 @@
+#!/bin/bash
+set -e
+
+# dockerinit still needs to be a static binary, even if docker is dynamic
+go build \
+	-o "$DEST/dockerinit-$VERSION" \
+	"${BUILDFLAGS[@]}" \
+	-ldflags "
+		$LDFLAGS
+		$LDFLAGS_STATIC
+		-extldflags \"$EXTLDFLAGS_STATIC\"
+	" \
+	./dockerinit
+echo "Created binary: $DEST/dockerinit-$VERSION"
+ln -sf "dockerinit-$VERSION" "$DEST/dockerinit"
+
+sha1sum=
+if command -v sha1sum &> /dev/null; then
+	sha1sum=sha1sum
+elif command -v shasum &> /dev/null; then
+	# Mac OS X - why couldn't they just use the same command name and be happy?
+	sha1sum=shasum
+else
+	echo >&2 'error: cannot find sha1sum command or equivalent'
+	exit 1
+fi
+
+# sha1 our new dockerinit to ensure separate docker and dockerinit always run in a perfect pair compiled for one another
+export DOCKER_INITSHA1="$($sha1sum $DEST/dockerinit-$VERSION | cut -d' ' -f1)"

project/make/dynbinary

@@ -4,39 +4,14 @@ set -e
 DEST=$1
 
 if [ -z "$DOCKER_CLIENTONLY" ]; then
-	# dockerinit still needs to be a static binary, even if docker is dynamic
-	go build \
-		-o "$DEST/dockerinit-$VERSION" \
-		"${BUILDFLAGS[@]}" \
-		-ldflags "
-			$LDFLAGS
-			$LDFLAGS_STATIC
-			-extldflags \"$EXTLDFLAGS_STATIC\"
-		" \
-		./dockerinit
-	echo "Created binary: $DEST/dockerinit-$VERSION"
-	ln -sf "dockerinit-$VERSION" "$DEST/dockerinit"
+	source "$(dirname "$BASH_SOURCE")/.dockerinit"
 
 	hash_files "$DEST/dockerinit-$VERSION"
-
-	sha1sum=
-	if command -v sha1sum &> /dev/null; then
-		sha1sum=sha1sum
-	elif command -v shasum &> /dev/null; then
-		# Mac OS X - why couldn't they just use the same command name and be happy?
-		sha1sum=shasum
-	else
-		echo >&2 'error: cannot find sha1sum command or equivalent'
-		exit 1
-	fi
-
-	# sha1 our new dockerinit to ensure separate docker and dockerinit always run in a perfect pair compiled for one another
-	export DOCKER_INITSHA1="$($sha1sum $DEST/dockerinit-$VERSION | cut -d' ' -f1)"
 else
 	# DOCKER_CLIENTONLY must be truthy, so we don't need to bother with dockerinit :)
 	export DOCKER_INITSHA1=""
 fi
-# exported so that "dyntest" can easily access it later without recalculating it
+# DOCKER_INITSHA1 is exported so that other bundlescripts can easily access it later without recalculating it
 
 (
 	export LDFLAGS_STATIC_DOCKER="-X $DOCKER_PKG/dockerversion.INITSHA1 \"$DOCKER_INITSHA1\" -X $DOCKER_PKG/dockerversion.INITPATH \"$DOCKER_INITPATH\""

project/make/test-integration

@@ -3,8 +3,18 @@ set -e
 
 DEST=$1
 
+INIT=$DEST/../dynbinary/dockerinit-$VERSION
+[ -x "$INIT" ] || {
+	source "$(dirname "$BASH_SOURCE")/.dockerinit"
+	INIT="$DEST/dockerinit"
+}
+export TEST_DOCKERINIT_PATH="$INIT"
+
 bundle_test_integration() {
-	LDFLAGS="$LDFLAGS $LDFLAGS_STATIC_DOCKER" go_test_dir ./integration \
+	LDFLAGS="
+		$LDFLAGS
+		-X $DOCKER_PKG/dockerversion.INITSHA1 \"$DOCKER_INITSHA1\"
+	" go_test_dir ./integration \
 		"-coverpkg $(find_dirs '*.go' | sed 's,^\.,'$DOCKER_PKG',g' | paste -d, -s)"
 }
 

project/make/test-unit

@@ -23,7 +23,7 @@ bundle_test_unit() {
 			TESTDIRS=$(find_dirs '*_test.go')
 		fi
 		(
-			export LDFLAGS="$LDFLAGS $LDFLAGS_STATIC_DOCKER"
+			export LDFLAGS
 			export TESTFLAGS
 			export HAVE_GO_TEST_COVER
 			export DEST