Define it and itprep recursive target if AM_EXTRA_RECURSIVE_TARGETS is defined

configure.ac

@@ -39,10 +39,9 @@ AC_CANONICAL_HOST
 AC_CANONICAL_TARGET
 
 AM_INIT_AUTOMAKE([subdir-objects])
-# comment out for now since this requires automake 1.13 or higher and
-# travis has older one.
-# AM_EXTRA_RECURSIVE_TARGETS([it])
 
+# AM_EXTRA_RECURSIVE_TARGETS requires automake 1.13 or higher
+m4_ifdef([AM_EXTRA_RECURSIVE_TARGETS], [AM_EXTRA_RECURSIVE_TARGETS([it itprep])])
 m4_ifdef([AM_SILENT_RULES], [AM_SILENT_RULES([yes])])
 
 dnl See versioning rule:

integration-tests/Makefile.am

@@ -32,13 +32,11 @@ EXTRA_DIST = \
 	alt-server.crt \
 	setenv
 
-.PHONY: itprep it
-
-itprep:
+itprep-local:
 	go get -d -v github.com/bradfitz/http2
 	go get -d -v github.com/tatsuhiro-t/go-nghttp2
 	go get -d -v github.com/tatsuhiro-t/spdy
 	go get -d -v golang.org/x/net/websocket
 
-it:
+it-local:
 	sh setenv go test -v