Remove gccgo support

Makefile

@@ -1,4 +1,4 @@
-.PHONY: all binary build build-gccgo cross deb docs gccgo help init-go-pkg-cache install manpages rpm run shell test test-docker-py test-integration-cli tgz test-unit validate win
+.PHONY: all binary build cross deb docs help init-go-pkg-cache install manpages rpm run shell test test-docker-py test-integration-cli tgz test-unit validate win
 
 # set the graph driver as the current graphdriver if not set
 DOCKER_GRAPHDRIVER := $(if $(DOCKER_GRAPHDRIVER),$(DOCKER_GRAPHDRIVER),$(shell docker info 2>&1 | grep "Storage Driver" | sed 's/.*: //'))
@@ -80,9 +80,6 @@ binary: build ## build the linux binaries
 build: bundles init-go-pkg-cache
 	docker build ${DOCKER_BUILD_ARGS} -t "$(DOCKER_IMAGE)" -f "$(DOCKERFILE)" .
 
-build-gccgo: bundles init-go-pkg-cache
-	docker build ${DOCKER_BUILD_ARGS} -t "$(DOCKER_IMAGE)-gccgo" -f Dockerfile.gccgo .
-
 bundles:
 	mkdir bundles
 
@@ -104,9 +101,6 @@ deb: build  ## build the deb packages
 docs: ## build the docs
 	$(MAKE) -C docs docs
 
-gccgo: build-gccgo ## build the gcc-go linux binaries
-	$(DOCKER_FLAGS) "$(DOCKER_IMAGE)-gccgo" hack/make.sh gccgo
-
 install: ## install the linux binaries
 	KEEPBUNDLE=1 hack/make.sh install-binary
 

hack/make/.integration-daemon-start

@@ -3,7 +3,7 @@
 # see test-integration-cli for example usage of this script
 
 base="$ABS_DEST/.."
-export PATH="$base/binary-client:$base/binary-daemon:$base/dynbinary-client:$base/dynbinary-daemon:$base/gccgo:$base/dyngccgo:$PATH"
+export PATH="$base/binary-client:$base/binary-daemon:$base/dynbinary-client:$base/dynbinary-daemon:$PATH"
 
 if ! command -v docker &> /dev/null; then
 	echo >&2 'error: binary-client or dynbinary-client must be run before .integration-daemon-start'

hack/make/cover

@@ -12,9 +12,4 @@ bundle_cover() {
 	done
 }
 
-if [ "$HAVE_GO_TEST_COVER" ]; then
-	bundle_cover 2>&1 | tee "$DEST/report.log"
-else
-	echo >&2 'warning: the current version of go does not support -cover'
-	echo >&2 '  skipping test coverage report'
-fi
+bundle_cover 2>&1 | tee "$DEST/report.log"

hack/make/test-unit

@@ -34,13 +34,7 @@ bundle_test_unit() {
 		| grep -v github.com/docker/docker/vendor \
 		| grep -v github.com/docker/docker/man \
 		| grep -v github.com/docker/docker/integration-cli)
-	go test $COVER $GCCGOFLAGS -ldflags "$LDFLAGS" "${BUILDFLAGS[@]}" $TESTFLAGS $pkg_list
+	go test -cover -ldflags "$LDFLAGS" "${BUILDFLAGS[@]}" $TESTFLAGS $pkg_list
 }
 
-
-if [[ "$(go version)" == *"gccgo"* ]]; then
-	GCCGOFLAGS=-gccgoflags="-lpthread"
-else
-	COVER=-cover
-fi
 bundle_test_unit 2>&1 | tee -a "$DEST/test.log"

integration-cli/docker_cli_events_unix_test.go

@@ -47,7 +47,7 @@ func (s *DockerSuite) TestEventsRedirectStdout(c *check.C) {
 }
 
 func (s *DockerSuite) TestEventsOOMDisableFalse(c *check.C) {
-	testRequires(c, DaemonIsLinux, oomControl, memoryLimitSupport, NotGCCGO, swapMemorySupport)
+	testRequires(c, DaemonIsLinux, oomControl, memoryLimitSupport, swapMemorySupport)
 
 	errChan := make(chan error)
 	go func() {
@@ -77,7 +77,7 @@ func (s *DockerSuite) TestEventsOOMDisableFalse(c *check.C) {
 }
 
 func (s *DockerSuite) TestEventsOOMDisableTrue(c *check.C) {
-	testRequires(c, DaemonIsLinux, oomControl, memoryLimitSupport, NotGCCGO, NotArm, swapMemorySupport)
+	testRequires(c, DaemonIsLinux, oomControl, memoryLimitSupport, NotArm, swapMemorySupport)
 
 	errChan := make(chan error)
 	observer, err := newEventObserver(c)

integration-cli/docker_cli_run_test.go

@@ -3507,7 +3507,7 @@ func (s *DockerSuite) TestPtraceContainerProcsFromHost(c *check.C) {
 
 func (s *DockerSuite) TestAppArmorDeniesPtrace(c *check.C) {
 	// Not applicable on Windows as uses Unix specific functionality
-	testRequires(c, SameHostDaemon, Apparmor, DaemonIsLinux, NotGCCGO)
+	testRequires(c, SameHostDaemon, Apparmor, DaemonIsLinux)
 
 	// Run through 'sh' so we are NOT pid 1. Pid 1 may be able to trace
 	// itself, but pid>1 should not be able to trace pid1.

integration-cli/docker_cli_run_unix_test.go

@@ -611,8 +611,7 @@ func (s *DockerSuite) TestRunOOMExitCode(c *check.C) {
 	errChan := make(chan error)
 	go func() {
 		defer close(errChan)
-		//changing memory to 40MB from 4MB due to an issue with GCCGO that test fails to start the container.
-		out, exitCode, _ := dockerCmdWithError("run", "-m", "40MB", "busybox", "sh", "-c", "x=a; while true; do x=$x$x$x$x; done")
+		out, exitCode, _ := dockerCmdWithError("run", "-m", "4MB", "busybox", "sh", "-c", "x=a; while true; do x=$x$x$x$x; done")
 		if expected := 137; exitCode != expected {
 			errChan <- fmt.Errorf("wrong exit code for OOM container: expected %d, got %d (output: %q)", expected, exitCode, out)
 		}

integration-cli/requirements.go

@@ -153,16 +153,6 @@ var (
 		},
 		"Test requires support for IPv6",
 	}
-	NotGCCGO = testRequirement{
-		func() bool {
-			out, err := exec.Command("go", "version").Output()
-			if err == nil && strings.Contains(string(out), "gccgo") {
-				return false
-			}
-			return true
-		},
-		"Test requires native Golang compiler instead of GCCGO",
-	}
 	UserNamespaceInKernel = testRequirement{
 		func() bool {
 			if _, err := os.Stat("/proc/self/uid_map"); os.IsNotExist(err) {