Add make option GODEBUG to generate GDB friendly binary

The option is just available in Linux.

Signed-off-by: Hui Zhu <[email protected]>

Author: teawater

Makefile.am

@@ -1,5 +1,8 @@
 export GO15VENDOREXPERIMENT=1
 export VERSION_PARAM=-ldflags "-X github.com/hyperhq/hyperd/utils.VERSION=$(VERSION) -X github.com/hyperhq/hyperd/utils.GITCOMMIT=`git describe --dirty --always --tags 2> /dev/null || true`"
+if ON_LINUX
+export GO_GCFLAGS=`if [ "$(GODEBUG)" != "" ]; then echo "-N -l"; else echo ""; fi`
+endif
 
 SUBDIRS=cmd
 

cmd/hyperctl/Makefile.am

@@ -6,4 +6,4 @@ install-exec-local:
 
 hyperctl-local: build-hyperctl
 build-hyperctl:
-	go build $(VERSION_PARAM) hyperctl.go
+	go build -gcflags="$(GO_GCFLAGS)" $(VERSION_PARAM) hyperctl.go

cmd/hyperd/Makefile.am

@@ -36,4 +36,4 @@ install-exec-local:
 
 hyperd-local: build-hyperd
 build-hyperd:
-	go build -tags "static_build $(HYPER_BULD_TAGS)" $(VERSION_PARAM) hyperd.go
+	go build -gcflags="$(GO_GCFLAGS)" -tags "static_build $(HYPER_BULD_TAGS)" $(VERSION_PARAM) hyperd.go

cmd/vmlogd/Makefile.am

@@ -6,4 +6,4 @@ install-exec-local:
 
 vmlogd-local: build-vmlogd
 build-vmlogd:
-	go build $(VERSION_PARAM) vmlogd.go
+	go build -gcflags="$(GO_GCFLAGS)" $(VERSION_PARAM) vmlogd.go