diff --git a/configure/CONFIG_MODULE_DEV b/configure/CONFIG_MODULE_DEV
deleted file mode 100644
index d59c0198bd4a3eac44954ae58d1782d8991d3629..0000000000000000000000000000000000000000
--- a/configure/CONFIG_MODULE_DEV
+++ /dev/null
@@ -1,20 +0,0 @@
-EPICS_MODULE_TAG:=master
-#
-EPICS_MODULE_NAME:=${E3_REQUIRE_NAME}
-#
-E3_MODULE_SRC_PATH:=$(EPICS_MODULE_NAME)
-E3_MODULE_MAKEFILE:=$(EPICS_MODULE_NAME).Makefile
-
-E3_MODULE_NAME:=$(EPICS_MODULE_NAME)
-E3_MODULE_VERSION:=3.3.0
-#
-#
-#
-E3_MODULE_DEV_GITURL:="https://github.com/icshwi/require-ess"
-
-
-
-# The definitions shown below can also be placed in an untracked CONFIG_MODULE.local
--include $(TOP)/../../REQUIRE_CONFIG_MODULE_DEV.local
--include $(TOP)/../REQUIRE_CONFIG_MODULE_DEV.local
--include $(TOP)/configure/CONFIG_MODULE_DEV.local
diff --git a/configure/E3/RULES_DEV b/configure/E3/RULES_DEV
index 2c7e9a9ff1cc71b052b00178c0658dd0b1dc1c5f..e7b6e7cf3a8550a102e9d1856e0611a5305e50b3 100644
--- a/configure/E3/RULES_DEV
+++ b/configure/E3/RULES_DEV
@@ -1,5 +1,6 @@
 # -*- mode: Makefile;-*-
 
+ifneq ($(E3_LOCAL_SOURCE),1)
 .PHONY: devvars devenv devinit devbuild devclean devinstall devrebuild devuninstall devdistclean devconf devepics devepics-clean devepics-distclean devpatch devpatchrevert devexistent devdep devvers
 
 devvars: vars
@@ -69,4 +70,11 @@ devpatchrevert: patchrevert
 devexistent: existent
 devdep: dep
 devvers: vers
-endif
+endif # E3_MODULE_SRC_PATH_FLAG
+
+else
+
+dev%:
+	$(error You are in local source mode. No dev targets are available)
+
+endif # E3_LOCAL_SOURCE
diff --git a/configure/RELEASE_DEV b/configure/RELEASE_DEV
deleted file mode 100644
index b03cfd8f64bc7e96aed50c0044dc258ee7bbba9e..0000000000000000000000000000000000000000
--- a/configure/RELEASE_DEV
+++ /dev/null
@@ -1,10 +0,0 @@
-EPICS_BASE=/epics/base-7.0.4
-
-E3_REQUIRE_NAME:=require
-E3_REQUIRE_VERSION=$(E3_MODULE_VERSION)
-
-
-# The definitions shown below can also be placed in an untracked RELEASE.local
--include $(TOP)/../../RELEASE_DEV.local
--include $(TOP)/../RELEASE_DEV.local
--include $(TOP)/configure/RELEASE_DEV.local