47 files changed, 371 insertions, 764 deletions
diff --git a/lib/diameter/configure.in b/lib/diameter/configure.in
index 9aca3859c5..8acfb28fed 100644
--- a/lib/diameter/configure.in
+++ b/lib/diameter/configure.in
@@ -132,7 +132,6 @@ dnl </STANDALONE DIAMETER>
 
 AC_OUTPUT(
 	Makefile:Makefile.in
-	src/app/diameter.mk:src/app/diameter.mk.in
 	make/$host/rules.mk:make/rules.mk.in
 	)
 
diff --git a/lib/diameter/src/compiler/.gitignore b/lib/diameter/src/.gitignore
index d9f072e262..feeb378fd8 100644
--- a/lib/diameter/src/compiler/.gitignore
+++ b/lib/diameter/src/.gitignore
@@ -1,3 +1,2 @@
 
 /depend.mk
-
diff --git a/lib/diameter/src/Makefile b/lib/diameter/src/Makefile
index 6935eb053e..a057632d15 100644
--- a/lib/diameter/src/Makefile
+++ b/lib/diameter/src/Makefile
@@ -16,28 +16,225 @@
 # 
 # %CopyrightEnd%
 
-ifneq ($(ERL_TOP),)
-include $(ERL_TOP)/make/target.mk
-include $(ERL_TOP)/make/$(TARGET)/otp.mk
-else
+ifeq ($(ERL_TOP),)
 include $(DIAMETER_TOP)/make/target.mk
 include $(DIAMETER_TOP)/make/$(TARGET)/rules.mk
+else
+include $(ERL_TOP)/make/target.mk
+include $(ERL_TOP)/make/$(TARGET)/otp.mk
 endif
 
 # ----------------------------------------------------
-# Common Macros
+# Application version
 # ----------------------------------------------------
 
-include subdirs.mk
+include ../vsn.mk
 
-SPECIAL_TARGETS =
+VSN = $(DIAMETER_VSN)
 
 # ----------------------------------------------------
-# Default Subdir Targets
+# Release directory specification
 # ----------------------------------------------------
-ifneq ($(ERL_TOP),)
-include $(ERL_TOP)/make/otp_subdir.mk
+
+RELSYSDIR = $(RELEASE_PATH)/lib/diameter-$(VSN)
+
+# Where to put/find things.
+EBIN   = ../ebin
+INCDIR = ../include
+
+# Dumbed down to make 3.80. In 3.81 and later it's just $(realpath $(EBIN)).
+ABS_EBIN := $(shell cd $(EBIN) && pwd)
+
+# Where make should look for dependencies.
+VPATH = .:base:compiler:transport:gen
+
+# ----------------------------------------------------
+# Target specs
+# ----------------------------------------------------
+
+include modules.mk
+
+DICT_MODULES = $(DICTS:%=gen/diameter_gen_%)
+DICT_ERLS    = $(DICT_MODULES:%=%.erl)
+DICT_HRLS    = $(DICT_MODULES:%=%.hrl)
+
+# Modules to build before compiling dictionaries.
+COMPILER_MODULES = $(filter compiler/%, $(CT_MODULES))
+
+# All handwritten modules.
+MODULES = \
+	$(RT_MODULES) \
+	$(CT_MODULES)
+
+# Modules whose names are inserted into the app file.
+APP_MODULES = \
+	$(RT_MODULES) \
+	$(DICT_MODULES)
+
+# Modules for which to build beams.
+TARGET_MODULES = \
+	$(APP_MODULES) \
+	$(CT_MODULES)
+
+# What to build for the 'opt' target.
+TARGET_FILES = \
+	$(patsubst %,$(EBIN)/%.$(EMULATOR),$(notdir $(TARGET_MODULES))) \
+	$(APP_TARGET) \
+	$(APPUP_TARGET)
+
+# Subdirectories of src to release modules into.
+TARGET_DIRS = $(sort $(dir $(TARGET_MODULES)))
+
+APP_FILE   = diameter.app
+APP_SRC    = $(APP_FILE).src
+APP_TARGET = $(EBIN)/$(APP_FILE)
+
+APPUP_FILE   = diameter.appup
+APPUP_SRC    = $(APPUP_FILE).src
+APPUP_TARGET = $(EBIN)/$(APPUP_FILE)
+
+# ----------------------------------------------------
+# Flags
+# ----------------------------------------------------
+
+ifeq ($(TYPE),debug)
+ERL_COMPILE_FLAGS += -Ddebug
+endif
+
+ERL_COMPILE_FLAGS += \
+	+'{parse_transform,sys_pre_attributes}' \
+	+'{attribute,insert,app_vsn,$(APP_VSN)}' \
+	+warn_export_vars \
+	+warn_unused_vars \
+	-pa $(ABS_EBIN) \
+	-I $(INCDIR) \
+	-I gen
+# -pa is to be able to include_lib from the include directory: the
+# path must contain the application name.
+
+# ----------------------------------------------------
+# Targets
+# ----------------------------------------------------
+
+# erl/hrl from dictionary file.
+gen/diameter_gen_%.erl gen/diameter_gen_%.hrl: dict/%.dia
+	../bin/diameterc -o gen -i $(EBIN) $<
+
+opt: $(TARGET_FILES)
+
+debug:
+	@$(MAKE) TYPE=debug opt
+
+# Generate the app file.
+$(APP_TARGET): $(APP_SRC) ../vsn.mk modules.mk
+	M=`echo $(notdir $(APP_MODULES)) | tr ' ' ,`; \
+	sed -e 's;%VSN%;$(VSN);' \
+	    -e "s;%MODULES%;$$M;" \
+	  $< > $@
+
+$(APPUP_TARGET): $(APPUP_SRC) ../vsn.mk
+	sed -e 's;%VSN%;$(VSN);' $< > $@
+
+app:  $(APP_TARGET) $(APPUP_TARGET)
+dict: $(DICT_ERLS)
+
+docs:
+
+list = echo $(1):; echo $($(1)) | tr ' ' '\n' | sort | sed 's@^@  @'
+
+info:
+	@echo ========================================
+	@$(call list,DICTS)
+	@echo
+	@$(call list,RT_MODULES)
+	@echo
+	@$(call list,CT_MODULES)
+	@echo
+	@$(call list,TARGET_MODULES)
+	@echo
+	@$(call list,TARGET_DIRS)
+	@echo
+	@$(call list,EXTERNAL_HRLS)
+	@echo
+	@$(call list,INTERNAL_HRLS)
+	@echo
+	@$(call list,EXAMPLES)
+	@echo
+	@$(call list,BINS)
+	@echo ========================================
+
+clean:
+	rm -f $(TARGET_FILES) $(DICT_ERLS) $(DICT_HRLS)
+	rm -f depend.mk
+
+# ----------------------------------------------------
+# Release targets
+# ----------------------------------------------------
+
+ifeq ($(ERL_TOP),)
+include $(DIAMETER_TOP)/make/release_targets.mk
 else
-include $(DIAMETER_TOP)/make/subdir.mk
+include $(ERL_TOP)/make/otp_release_targets.mk
 endif
-#include ../make/subdir.mk
+
+# Can't $(INSTALL_DIR) more than on directory at a time on Solaris.
+
+release_spec: opt
+	for d in bin ebin examples include src/dict $(TARGET_DIRS:%/=src/%); do \
+	    $(INSTALL_DIR) $(RELSYSDIR)/$$d; \
+	done
+	$(INSTALL_SCRIPT) $(BINS:%=../bin/%) $(RELSYSDIR)/bin
+	$(INSTALL_DATA) $(TARGET_FILES) $(RELSYSDIR)/ebin
+	$(INSTALL_DATA) $(EXAMPLES:%=../examples/%) $(RELSYSDIR)/examples
+	$(INSTALL_DATA) $(EXTERNAL_HRLS:%=../include/%) $(DICT_HRLS) \
+	                $(RELSYSDIR)/include
+	$(INSTALL_DATA) $(DICTS:%=dict/%.dia) $(RELSYSDIR)/src/dict
+	$(MAKE) $(TARGET_DIRS:%/=release_src_%)
+
+$(TARGET_DIRS:%/=release_src_%): release_src_%:
+	$(INSTALL_DATA) $(filter $*/%,$(TARGET_MODULES:%=%.erl) \
+	                              $(INTERNAL_HRLS)) \
+	                $(RELSYSDIR)/src/$*
+
+release_docs_spec:
+
+# ----------------------------------------------------
+# Dependencies
+# ----------------------------------------------------
+
+gen/diameter_gen_base_accounting.erl gen/diameter_gen_relay.erl \
+gen/diameter_gen_base_accounting.hrl gen/diameter_gen_relay.hrl: \
+	$(EBIN)/diameter_gen_base_rfc3588.$(EMULATOR)
+
+gen/diameter_gen_base_rfc3588.erl gen/diameter_gen_base_rfc3588.hrl: \
+	$(COMPILER_MODULES:compiler/%=$(EBIN)/%.$(EMULATOR))
+
+$(DICT_MODULES:%=$(EBIN)/%.$(EMULATOR)): \
+	$(INCDIR)/diameter.hrl \
+	$(INCDIR)/diameter_gen.hrl
+
+depend: depend.mk
+
+# Generate dependencies makefile.
+depend.mk: depend.sed $(MODULES:%=%.erl) Makefile
+	(for f in $(MODULES); do \
+	     (echo $$f; cat $$f.erl) | sed -f $<; \
+	 done) \
+	> $@
+
+-include depend.mk
+
+.PRECIOUS: $(DICT_ERLS) $(DICT_HRLS)
+.PHONY: app clean depend dict info release_subdir
+.PHONY: debug opt release_docs_spec release_spec
+.PHONY: $(TARGET_DIRS:%/=%) $(TARGET_DIRS:%/=release_src_%)
+
+# ----------------------------------------------------
+# Targets using secondary expansion (make >= 3.81)
+# ----------------------------------------------------
+
+.SECONDEXPANSION:
+
+# Make beams from a subdirectory.
+$(TARGET_DIRS:%/=%): \
+  $$(patsubst $$@/%,$(EBIN)/%.$(EMULATOR),$$(filter $$@/%,$(TARGET_MODULES)))
diff --git a/lib/diameter/src/app/.gitignore b/lib/diameter/src/app/.gitignore
deleted file mode 100644
index d388e61877..0000000000
--- a/lib/diameter/src/app/.gitignore
+++ /dev/null
@@ -1,6 +0,0 @@
-
-/diameter_gen_*.erl
-/diameter_gen_*.hrl
-/depend.mk
-/diameter.mk
-
diff --git a/lib/diameter/src/app/Makefile b/lib/diameter/src/app/Makefile
deleted file mode 100644
index b2efc42a69..0000000000
--- a/lib/diameter/src/app/Makefile
+++ /dev/null
@@ -1,215 +0,0 @@
-#
-# %CopyrightBegin%
-#
-# Copyright Ericsson AB 2010-2011. All Rights Reserved.
-#
-# The contents of this file are subject to the Erlang Public License,
-# Version 1.1, (the "License"); you may not use this file except in
-# compliance with the License. You should have received a copy of the
-# Erlang Public License along with this software. If not, it can be
-# retrieved online at http://www.erlang.org/.
-#
-# Software distributed under the License is distributed on an "AS IS"
-# basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
-# the License for the specific language governing rights and limitations
-# under the License.
-#
-# %CopyrightEnd%
-#
-#
-
-ifneq ($(ERL_TOP),)
-include $(ERL_TOP)/make/target.mk
-EBIN = ../../ebin
-include $(ERL_TOP)/make/$(TARGET)/otp.mk
-else
-include $(DIAMETER_TOP)/make/target.mk
-EBIN = ../../ebin
-include $(DIAMETER_TOP)/make/$(TARGET)/rules.mk
-endif
-
-# ----------------------------------------------------
-# Application version
-# ----------------------------------------------------
-
-include ../../vsn.mk
-
-VSN=$(DIAMETER_VSN)
-
-# ----------------------------------------------------
-# Release directory specification
-# ----------------------------------------------------
-
-RELSYSDIR = $(RELEASE_PATH)/lib/diameter-$(VSN)
-
-INCDIR = ../../include
-
-# ----------------------------------------------------
-# Target Specs
-# ----------------------------------------------------
-
-include modules.mk
-
-DICT_FILES     = $(DICTIONARIES:%=../dict/%.dia)
-DICT_MODULES   = $(DICTIONARIES:%=diameter_gen_%)
-DICT_ERL_FILES = $(DICT_MODULES:%=%.erl)
-DICT_HRL_FILES = $(DICT_MODULES:%=%.hrl)
-
-MODULES = \
-	$(RUNTIME_MODULES) \
-	$(HELP_MODULES)
-
-APP_MODULES = \
-	$(RUNTIME_MODULES) \
-	$(DICT_MODULES)
-
-TARGET_MODULES = \
-	$(APP_MODULES) \
-	$(HELP_MODULES)
-
-TARGET_FILES = \
-	$(TARGET_MODULES:%=$(EBIN)/%.$(EMULATOR)) \
-	$(APP_TARGET) \
-	$(APPUP_TARGET)
-
-ESCRIPT_FILES = \
-	../../bin/diameterc
-
-APP_FILE   = diameter.app
-APP_SRC    = $(APP_FILE).src
-APP_TARGET = $(EBIN)/$(APP_FILE)
-
-APPUP_FILE   = diameter.appup
-APPUP_SRC    = $(APPUP_FILE).src
-APPUP_TARGET = $(EBIN)/$(APPUP_FILE)
-
-# ----------------------------------------------------
-# FLAGS
-# ----------------------------------------------------
-
-ifeq ($(TYPE),debug)
-ERL_COMPILE_FLAGS += -Ddebug
-endif
-
-include diameter.mk
-
-ERL_COMPILE_FLAGS += \
-    $(DIAMETER_ERL_COMPILE_FLAGS) \
-    -I$(INCDIR)
-
-# ----------------------------------------------------
-# Targets
-# ----------------------------------------------------
-
-debug:
-	@$(MAKE) TYPE=debug opt
-
-opt: $(TARGET_FILES)
-
-clean:
-	rm -f $(TARGET_FILES) $(DICT_ERL_FILES) $(DICT_HRL_FILES)
-	rm -f $(APP_TARGET) $(APPUP_TARGET)
-	rm -f errs core *~ diameter_gen_*.forms diameter_gen_*.spec
-	rm -f depend.mk
-
-docs:
-
-info:
-	@echo ""
-	@echo "DICTIONARIES = $(DICTIONARIES)"
-	@echo "MODULES      = $(MODULES)"
-	@echo ""
-	@echo "EXTERNAL_HRL_FILES = $(EXTERNAL_HRL_FILES)"
-	@echo "INTERNAL_HRL_FILES = $(INTERNAL_HRL_FILES)"
-	@echo ""
-	@echo "EXAMPLE_FILES = $(EXAMPLE_FILES)"
-	@echo ""
-
-# ----------------------------------------------------
-# Special Build Targets
-# ----------------------------------------------------
-
-# erl/hrl from application spec
-diameter_gen_%.erl diameter_gen_%.hrl: ../dict/%.dia
-	../../bin/diameterc -i $(EBIN) $<
-
-# Generate the app file and then modules into in. This shouldn't know
-# about ../transport but good enough for now.
-$(APP_TARGET): $(APP_SRC) \
-               ../../vsn.mk \
-               modules.mk \
-               ../transport/modules.mk
-	sed -e 's;%VSN%;$(VSN);' $< > $@
-	M=`echo $(APP_MODULES) | sed -e 's/^ *//' -e 's/ *$$//' -e 'y/ /,/'`; \
-	echo "/%APP_MODULES%/s//$$M/;w;q" | tr ';' '\n' \
-	| ed -s $@
-	$(MAKE) -C ../transport $(APP_TARGET) APP_TARGET=$(APP_TARGET)
-
-$(APPUP_TARGET): $(APPUP_SRC) ../../vsn.mk
-	sed -e 's;%VSN%;$(VSN);' $< > $@
-
-compiler:
-	$(MAKE) -C ../$@
-
-app:  $(APP_TARGET) $(APPUP_TARGET)
-dict: $(DICT_ERL_FILES)
-
-# ----------------------------------------------------
-# Release Target
-# ----------------------------------------------------
-
-ifneq ($(ERL_TOP),)
-include $(ERL_TOP)/make/otp_release_targets.mk
-else
-include $(DIAMETER_TOP)/make/release_targets.mk
-endif
-
-release_spec: opt
-	$(INSTALL_DIR)  $(RELSYSDIR)/bin
-	$(INSTALL_DIR)  $(RELSYSDIR)/ebin
-	$(INSTALL_DIR)  $(RELSYSDIR)/src/app
-	$(INSTALL_DIR)  $(RELSYSDIR)/src/dict
-	$(INSTALL_DIR)  $(RELSYSDIR)/include
-	$(INSTALL_DIR)  $(RELSYSDIR)/examples
-	$(INSTALL_SCRIPT) $(ESCRIPT_FILES) $(RELSYSDIR)/bin
-	$(INSTALL_DATA) $(TARGET_FILES) $(RELSYSDIR)/ebin
-	$(INSTALL_DATA) $(MODULES:%=%.erl) $(DICT_ERL_FILES) $(RELSYSDIR)/src/app
-	$(INSTALL_DATA) $(DICT_FILES) $(RELSYSDIR)/src/dict
-	$(INSTALL_DATA) $(INTERNAL_HRL_FILES) $(RELSYSDIR)/src/app
-	$(INSTALL_DATA) $(EXTERNAL_HRL_FILES) $(DICT_HRL_FILES) $(RELSYSDIR)/include
-	$(INSTALL_DATA) $(EXAMPLE_FILES) $(RELSYSDIR)/examples
-
-release_docs_spec:
-
-# ----------------------------------------------------
-# Dependencies
-# ----------------------------------------------------
-
-$(DICT_MODULES:%=$(EBIN)/%.$(EMULATOR)): $(EBIN)/diameter_exprecs.$(EMULATOR)
-
-diameter_gen_base_accounting.erl diameter_gen_relay.erl: \
-	$(EBIN)/diameter_gen_base_rfc3588.beam
-
-$(DICT_ERL_FILES) $(DICT_HRL_FILES): compiler
-
-$(DICT_ERL_FILES:%.erl=$(EBIN)/%.$(EMULATOR)): \
-	$(DIAMETER_TOP)/include/diameter.hrl \
-	$(DIAMETER_TOP)/include/diameter_gen.hrl
-
-depend: depend.mk
-
-# Generate dependencies makefile. It's assumed that the compile target
-# has already been made since it's currently not smart enough to not
-# force a rebuild of those beams dependent on generated hrls, and this
-# is a no-no at make release.
-depend.mk: depend.sed $(MODULES:%=%.erl) Makefile
-	(for f in $(MODULES); do \
-	     sed -f $< $$f.erl | sed "s@/@/$$f@"; \
-	 done) \
-	> $@
-
--include depend.mk
-
-.PRECIOUS: $(DICT_ERL_FILES) $(DICT_HRL_FILES)
-.PHONY: app clean debug depend info opt compiler dict
-.PHONY: release_spec release_docs_spec
diff --git a/lib/diameter/src/app/diameter.mk.in b/lib/diameter/src/app/diameter.mk.in
deleted file mode 100644
index c161064303..0000000000
--- a/lib/diameter/src/app/diameter.mk.in
+++ /dev/null
@@ -1,47 +0,0 @@
-#-*-makefile-*-   ; force emacs to enter makefile-mode
-
-# %CopyrightBegin%
-#
-# Copyright Ericsson AB 2010-2011. All Rights Reserved.
-#
-# The contents of this file are subject to the Erlang Public License,
-# Version 1.1, (the "License"); you may not use this file except in
-# compliance with the License. You should have received a copy of the
-# Erlang Public License along with this software. If not, it can be
-# retrieved online at http://www.erlang.org/.
-#
-# Software distributed under the License is distributed on an "AS IS"
-# basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
-# the License for the specific language governing rights and limitations
-# under the License.
-#
-# %CopyrightEnd%
-
-DIAMETER_TOP = @DIAMETER_TOP@
-
-# ifneq ($(PREFIX),)
-# ifeq ($(TESTROOT),)
-# TESTROOT = $(PREFIX)
-# endif
-# endif
-
-ifeq ($(USE_DIAMETER_TEST_CODE), true)
-ERL_COMPILE_FLAGS += -DDIAMETER_TEST_CODE=mona_lisa_spelar_doom
-endif
-
-ifeq ($(USE_DIAMETER_HIPE), true)
-ERL_COMPILE_FLAGS += +native
-endif
-
-ifeq ($(WARN_UNUSED_WARS), true)
-ERL_COMPILE_FLAGS += +warn_unused_vars
-endif
-
-DIAMETER_APP_VSN_COMPILE_FLAGS = \
-	+'{parse_transform,sys_pre_attributes}' \
-	+'{attribute,insert,app_vsn,$(APP_VSN)}'
-
-DIAMETER_ERL_COMPILE_FLAGS += \
-	-pa $(DIAMETER_TOP)/ebin  \
-	$(DIAMETER_APP_VSN_COMPILE_FLAGS) 
-
diff --git a/lib/diameter/src/app/modules.mk b/lib/diameter/src/app/modules.mk
deleted file mode 100644
index ea4c58bfd7..0000000000
--- a/lib/diameter/src/app/modules.mk
+++ /dev/null
@@ -1,70 +0,0 @@
-#-*-makefile-*-   ; force emacs to enter makefile-mode
-
-# %CopyrightBegin%
-# 
-# Copyright Ericsson AB 2010-2011. All Rights Reserved.
-# 
-# The contents of this file are subject to the Erlang Public License,
-# Version 1.1, (the "License"); you may not use this file except in
-# compliance with the License. You should have received a copy of the
-# Erlang Public License along with this software. If not, it can be
-# retrieved online at http://www.erlang.org/.
-# 
-# Software distributed under the License is distributed on an "AS IS"
-# basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
-# the License for the specific language governing rights and limitations
-# under the License.
-# 
-# %CopyrightEnd%
-
-DICTIONARIES = \
-	base_rfc3588 \
-	base_accounting \
-	relay
-
-RUNTIME_MODULES = \
-	diameter \
-	diameter_app \
-	diameter_capx \
-	diameter_config \
-	diameter_codec \
-	diameter_dict \
-	diameter_lib \
-	diameter_misc_sup \
-	diameter_peer \
-	diameter_peer_fsm \
-	diameter_peer_fsm_sup \
-	diameter_reg \
-	diameter_service \
-	diameter_service_sup \
-	diameter_session \
-	diameter_stats \
-	diameter_sup \
-	diameter_sync \
-	diameter_types \
-	diameter_watchdog \
-	diameter_watchdog_sup
-
-HELP_MODULES = \
-	diameter_callback \
-	diameter_exprecs \
-	diameter_dbg \
-	diameter_info
-
-INTERNAL_HRL_FILES = \
-	diameter_internal.hrl \
-	diameter_types.hrl
-
-EXTERNAL_HRL_FILES = \
-	../../include/diameter.hrl \
-	../../include/diameter_gen.hrl
-
-EXAMPLE_FILES = \
-	../../examples/GNUmakefile \
-	../../examples/peer.erl \
-	../../examples/client.erl \
-	../../examples/client_cb.erl \
-	../../examples/server.erl \
-	../../examples/server_cb.erl \
-	../../examples/relay.erl \
-	../../examples/relay_cb.erl
diff --git a/lib/diameter/src/app/diameter.app.src b/lib/diameter/src/base/diameter.app.src
index a806b5c78a..c092fdb022 100644
--- a/lib/diameter/src/app/diameter.app.src
+++ b/lib/diameter/src/base/diameter.app.src
@@ -20,7 +20,7 @@
 {application, diameter,
  [{description, "Diameter protocol"},
   {vsn, "%VSN%"},
-  {modules, [%APP_MODULES%,%TRANSPORT_MODULES%]},
+  {modules, [%MODULES%]},
   {registered, []},
   {applications, [stdlib, kernel]},
   {env, []},
diff --git a/lib/diameter/src/app/diameter.appup.src b/lib/diameter/src/base/diameter.appup.src
index 6d8ceadb92..6d8ceadb92 100644
--- a/lib/diameter/src/app/diameter.appup.src
+++ b/lib/diameter/src/base/diameter.appup.src
diff --git a/lib/diameter/src/app/diameter.erl b/lib/diameter/src/base/diameter.erl
index 2f721421d8..2f721421d8 100644
--- a/lib/diameter/src/app/diameter.erl
+++ b/lib/diameter/src/base/diameter.erl
diff --git a/lib/diameter/src/app/diameter_app.erl b/lib/diameter/src/base/diameter_app.erl
index 600f7ff04d..600f7ff04d 100644
--- a/lib/diameter/src/app/diameter_app.erl
+++ b/lib/diameter/src/base/diameter_app.erl
diff --git a/lib/diameter/src/app/diameter_callback.erl b/lib/diameter/src/base/diameter_callback.erl
index 6d5c8cdca1..6d5c8cdca1 100644
--- a/lib/diameter/src/app/diameter_callback.erl
+++ b/lib/diameter/src/base/diameter_callback.erl
diff --git a/lib/diameter/src/app/diameter_capx.erl b/lib/diameter/src/base/diameter_capx.erl
index 138e76411e..138e76411e 100644
--- a/lib/diameter/src/app/diameter_capx.erl
+++ b/lib/diameter/src/base/diameter_capx.erl
diff --git a/lib/diameter/src/app/diameter_codec.erl b/lib/diameter/src/base/diameter_codec.erl
index d88f42fb7c..d88f42fb7c 100644
--- a/lib/diameter/src/app/diameter_codec.erl
+++ b/lib/diameter/src/base/diameter_codec.erl
diff --git a/lib/diameter/src/app/diameter_config.erl b/lib/diameter/src/base/diameter_config.erl
index a6b48fe65b..a6b48fe65b 100644
--- a/lib/diameter/src/app/diameter_config.erl
+++ b/lib/diameter/src/base/diameter_config.erl
diff --git a/lib/diameter/src/app/diameter_dbg.erl b/lib/diameter/src/base/diameter_dbg.erl
index 5b0ac3a3b6..5b0ac3a3b6 100644
--- a/lib/diameter/src/app/diameter_dbg.erl
+++ b/lib/diameter/src/base/diameter_dbg.erl
diff --git a/lib/diameter/src/app/diameter_dict.erl b/lib/diameter/src/base/diameter_dict.erl
index 3b9ba00a3f..3b9ba00a3f 100644
--- a/lib/diameter/src/app/diameter_dict.erl
+++ b/lib/diameter/src/base/diameter_dict.erl
diff --git a/lib/diameter/src/app/diameter_info.erl b/lib/diameter/src/base/diameter_info.erl
index 39d32d07cd..39d32d07cd 100644
--- a/lib/diameter/src/app/diameter_info.erl
+++ b/lib/diameter/src/base/diameter_info.erl
diff --git a/lib/diameter/src/app/diameter_internal.hrl b/lib/diameter/src/base/diameter_internal.hrl
index 63b35550a8..63b35550a8 100644
--- a/lib/diameter/src/app/diameter_internal.hrl
+++ b/lib/diameter/src/base/diameter_internal.hrl
diff --git a/lib/diameter/src/app/diameter_lib.erl b/lib/diameter/src/base/diameter_lib.erl
index 362d593b24..362d593b24 100644
--- a/lib/diameter/src/app/diameter_lib.erl
+++ b/lib/diameter/src/base/diameter_lib.erl
diff --git a/lib/diameter/src/app/diameter_misc_sup.erl b/lib/diameter/src/base/diameter_misc_sup.erl
index 4e40476f14..4e40476f14 100644
--- a/lib/diameter/src/app/diameter_misc_sup.erl
+++ b/lib/diameter/src/base/diameter_misc_sup.erl
diff --git a/lib/diameter/src/app/diameter_peer.erl b/lib/diameter/src/base/diameter_peer.erl
index 3e78c4caef..3e78c4caef 100644
--- a/lib/diameter/src/app/diameter_peer.erl
+++ b/lib/diameter/src/base/diameter_peer.erl
diff --git a/lib/diameter/src/app/diameter_peer_fsm.erl b/lib/diameter/src/base/diameter_peer_fsm.erl
index 282fa2742f..282fa2742f 100644
--- a/lib/diameter/src/app/diameter_peer_fsm.erl
+++ b/lib/diameter/src/base/diameter_peer_fsm.erl
diff --git a/lib/diameter/src/app/diameter_peer_fsm_sup.erl b/lib/diameter/src/base/diameter_peer_fsm_sup.erl
index 995eaf74d0..995eaf74d0 100644
--- a/lib/diameter/src/app/diameter_peer_fsm_sup.erl
+++ b/lib/diameter/src/base/diameter_peer_fsm_sup.erl
diff --git a/lib/diameter/src/app/diameter_reg.erl b/lib/diameter/src/base/diameter_reg.erl
index 882b9da238..882b9da238 100644
--- a/lib/diameter/src/app/diameter_reg.erl
+++ b/lib/diameter/src/base/diameter_reg.erl
diff --git a/lib/diameter/src/app/diameter_service.erl b/lib/diameter/src/base/diameter_service.erl
index 421e36ccf5..421e36ccf5 100644
--- a/lib/diameter/src/app/diameter_service.erl
+++ b/lib/diameter/src/base/diameter_service.erl
diff --git a/lib/diameter/src/app/diameter_service_sup.erl b/lib/diameter/src/base/diameter_service_sup.erl
index 153fff902f..153fff902f 100644
--- a/lib/diameter/src/app/diameter_service_sup.erl
+++ b/lib/diameter/src/base/diameter_service_sup.erl
diff --git a/lib/diameter/src/app/diameter_session.erl b/lib/diameter/src/base/diameter_session.erl
index bb91e97f39..bb91e97f39 100644
--- a/lib/diameter/src/app/diameter_session.erl
+++ b/lib/diameter/src/base/diameter_session.erl
diff --git a/lib/diameter/src/app/diameter_stats.erl b/lib/diameter/src/base/diameter_stats.erl
index 71479afa95..71479afa95 100644
--- a/lib/diameter/src/app/diameter_stats.erl
+++ b/lib/diameter/src/base/diameter_stats.erl
diff --git a/lib/diameter/src/app/diameter_sup.erl b/lib/diameter/src/base/diameter_sup.erl
index e5afd23dcd..e5afd23dcd 100644
--- a/lib/diameter/src/app/diameter_sup.erl
+++ b/lib/diameter/src/base/diameter_sup.erl
diff --git a/lib/diameter/src/app/diameter_sync.erl b/lib/diameter/src/base/diameter_sync.erl
index ce2db4b3a2..ce2db4b3a2 100644
--- a/lib/diameter/src/app/diameter_sync.erl
+++ b/lib/diameter/src/base/diameter_sync.erl
diff --git a/lib/diameter/src/app/diameter_types.erl b/lib/diameter/src/base/diameter_types.erl
index 6b1b1b8d39..6b1b1b8d39 100644
--- a/lib/diameter/src/app/diameter_types.erl
+++ b/lib/diameter/src/base/diameter_types.erl
diff --git a/lib/diameter/src/app/diameter_types.hrl b/lib/diameter/src/base/diameter_types.hrl
index 02bf8a74dd..02bf8a74dd 100644
--- a/lib/diameter/src/app/diameter_types.hrl
+++ b/lib/diameter/src/base/diameter_types.hrl
diff --git a/lib/diameter/src/app/diameter_watchdog.erl b/lib/diameter/src/base/diameter_watchdog.erl
index b7c1491f4b..b7c1491f4b 100644
--- a/lib/diameter/src/app/diameter_watchdog.erl
+++ b/lib/diameter/src/base/diameter_watchdog.erl
diff --git a/lib/diameter/src/app/diameter_watchdog_sup.erl b/lib/diameter/src/base/diameter_watchdog_sup.erl
index fc837fe4ef..fc837fe4ef 100644
--- a/lib/diameter/src/app/diameter_watchdog_sup.erl
+++ b/lib/diameter/src/base/diameter_watchdog_sup.erl
diff --git a/lib/diameter/src/compiler/Makefile b/lib/diameter/src/compiler/Makefile
deleted file mode 100644
index 779013bfbc..0000000000
--- a/lib/diameter/src/compiler/Makefile
+++ /dev/null
@@ -1,131 +0,0 @@
-#
-# %CopyrightBegin%
-#
-# Copyright Ericsson AB 2010-2011. All Rights Reserved.
-#
-# The contents of this file are subject to the Erlang Public License,
-# Version 1.1, (the "License"); you may not use this file except in
-# compliance with the License. You should have received a copy of the
-# Erlang Public License along with this software. If not, it can be
-# retrieved online at http://www.erlang.org/.
-#
-# Software distributed under the License is distributed on an "AS IS"
-# basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
-# the License for the specific language governing rights and limitations
-# under the License.
-#
-# %CopyrightEnd%
-#
-#
-
-ifneq ($(ERL_TOP),)
-include $(ERL_TOP)/make/target.mk
-EBIN = ../../ebin
-include $(ERL_TOP)/make/$(TARGET)/otp.mk
-else
-include $(DIAMETER_TOP)/make/target.mk
-EBIN = ../../ebin
-include $(DIAMETER_TOP)/make/$(TARGET)/rules.mk
-endif
-
-
-# ----------------------------------------------------
-# Application version
-# ----------------------------------------------------
-include ../../vsn.mk
-VSN=$(DIAMETER_VSN)
-
-# ----------------------------------------------------
-# Release directory specification
-# ----------------------------------------------------
-
-RELSYSDIR = $(RELEASE_PATH)/lib/diameter-$(VSN)
-
-INCDIR = ../../include
-
-# ----------------------------------------------------
-# Target Specs
-# ----------------------------------------------------
-
-include modules.mk
-
-ERL_FILES = \
-	$(MODULES:%=%.erl)
-
-TARGET_FILES = \
-	$(MODULES:%=$(EBIN)/%.$(EMULATOR))
-
-# ----------------------------------------------------
-# FLAGS
-# ----------------------------------------------------
-
-ifeq ($(TYPE),debug)
-ERL_COMPILE_FLAGS += -Ddebug
-endif
-
-include ../app/diameter.mk
-
-ERL_COMPILE_FLAGS += \
-	$(DIAMETER_ERL_COMPILE_FLAGS) \
-	-I$(INCDIR)
-
-# ----------------------------------------------------
-# Targets
-# ----------------------------------------------------
-
-debug:
-	@${MAKE} TYPE=debug opt
-
-opt: $(TARGET_FILES)
-
-clean:
-	rm -f $(TARGET_FILES) 
-	rm -f errs core *~
-	rm -f depend.mk
-
-docs:
-
-info:
-	@echo ""
-	@echo "ERL_FILES = $(ERL_FILES)"
-	@echo "HRL_FILES = $(HRL_FILES)"
-	@echo ""
-	@echo "TARGET_FILES = $(TARGET_FILES)"
-	@echo ""
-
-# ----------------------------------------------------
-# Release Target
-# ----------------------------------------------------
-ifneq ($(ERL_TOP),)
-include $(ERL_TOP)/make/otp_release_targets.mk
-else
-include $(DIAMETER_TOP)/make/release_targets.mk
-endif
-
-release_spec: opt
-	$(INSTALL_DIR)  $(RELSYSDIR)/ebin
-	$(INSTALL_DATA) $(TARGET_FILES) $(RELSYSDIR)/ebin
-	$(INSTALL_DIR)  $(RELSYSDIR)/src
-	$(INSTALL_DIR)  $(RELSYSDIR)/src/compiler
-	$(INSTALL_DATA) $(ERL_FILES) $(HRL_FILES) $(RELSYSDIR)/src/compiler
-
-release_docs_spec:
-
-force:
-
-# ----------------------------------------------------
-# Dependencies
-# ----------------------------------------------------
-
-depend: depend.mk
-
-# Generate dependencies makefile.
-depend.mk: ../app/depend.sed $(ERL_FILES) Makefile
-	for f in $(MODULES); do \
-	    sed -f $< $$f.erl | sed "s@/@/$$f@"; \
-	done \
-	> $@
-
--include depend.mk
-
-.PHONY: clean debug depend docs force info opt release_docs_spec release_spec
diff --git a/lib/diameter/src/app/diameter_exprecs.erl b/lib/diameter/src/compiler/diameter_exprecs.erl
index 5e120d6f44..5e120d6f44 100644
--- a/lib/diameter/src/app/diameter_exprecs.erl
+++ b/lib/diameter/src/compiler/diameter_exprecs.erl
diff --git a/lib/diameter/src/compiler/modules.mk b/lib/diameter/src/compiler/modules.mk
deleted file mode 100644
index 4b40e99a3e..0000000000
--- a/lib/diameter/src/compiler/modules.mk
+++ /dev/null
@@ -1,28 +0,0 @@
-#-*-makefile-*-   ; force emacs to enter makefile-mode
-
-# %CopyrightBegin%
-# 
-# Copyright Ericsson AB 2010-2011. All Rights Reserved.
-# 
-# The contents of this file are subject to the Erlang Public License,
-# Version 1.1, (the "License"); you may not use this file except in
-# compliance with the License. You should have received a copy of the
-# Erlang Public License along with this software. If not, it can be
-# retrieved online at http://www.erlang.org/.
-# 
-# Software distributed under the License is distributed on an "AS IS"
-# basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
-# the License for the specific language governing rights and limitations
-# under the License.
-# 
-# %CopyrightEnd%
-
-MODULES = \
-	diameter_codegen \
-	diameter_spec_scan \
-	diameter_spec_util \
-	diameter_make
-
-HRL_FILES = \
-	diameter_forms.hrl
-
diff --git a/lib/diameter/src/app/depend.sed b/lib/diameter/src/depend.sed
index 9df0133960..8f999f646f 100644
--- a/lib/diameter/src/app/depend.sed
+++ b/lib/diameter/src/depend.sed
@@ -18,14 +18,34 @@
 #
 
 #
-# Extract include dependencies from .erl files. The output is massaged
-# further in Makefile.
+# Extract include dependencies from .erl files. First line of input
+# is the path to the module in question (minus the .erl extension),
+# the rest is the contents of the module.
 #
 
+1{
+  s@^[^/]*/@@
+  h
+  d
+}
+
+# Only interested in includes of diameter hrls.
 /^-include/!d
 /"diameter/!d
 
-s@^-include_lib("[^/]*@$(DIAMETER_TOP)@
+# Extract the name of the included files in one of two forms:
+#
+#   $(INCDIR)/diameter.hrl
+#   diameter_internal.hrl
+
+s@^-include_lib(".*/@$(INCDIR)/@
 s@^-include("@@
 s@".*@@
-s@^@$(EBIN)/.$(EMULATOR): @
+
+# Retrieve the path to our module from the hold space, morph it
+# into a beam path and turn it into a dependency like this:
+#
+#   $(EBIN)/diameter_service.$(EMULATOR): $(INCDIR)/diameter.hrl
+
+G
+s@^\(.*\)\n\(.*\)@$(EBIN)/\2.$(EMULATOR): \1@
diff --git a/lib/diameter/src/gen/.gitignore b/lib/diameter/src/gen/.gitignore
new file mode 100644
index 0000000000..d490642eb7
--- /dev/null
+++ b/lib/diameter/src/gen/.gitignore
@@ -0,0 +1,2 @@
+
+/diameter_gen*rl
diff --git a/lib/diameter/src/modules.mk b/lib/diameter/src/modules.mk
new file mode 100644
index 0000000000..c7cbe598af
--- /dev/null
+++ b/lib/diameter/src/modules.mk
@@ -0,0 +1,93 @@
+#-*-makefile-*-   ; force emacs to enter makefile-mode
+
+# %CopyrightBegin%
+#
+# Copyright Ericsson AB 2010-2011. All Rights Reserved.
+#
+# The contents of this file are subject to the Erlang Public License,
+# Version 1.1, (the "License"); you may not use this file except in
+# compliance with the License. You should have received a copy of the
+# Erlang Public License along with this software. If not, it can be
+# retrieved online at http://www.erlang.org/.
+#
+# Software distributed under the License is distributed on an "AS IS"
+# basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
+# the License for the specific language governing rights and limitations
+# under the License.
+#
+# %CopyrightEnd%
+
+# Runtime dictionary files in ./dict. Modules will be generated from
+# these are included in the app file.
+DICTS = \
+	base_rfc3588 \
+	base_accounting \
+	relay
+
+# Handwritten (runtime) modules included in the app file.
+RT_MODULES = \
+	base/diameter \
+	base/diameter_app \
+	base/diameter_capx \
+	base/diameter_config \
+	base/diameter_codec \
+	base/diameter_dict \
+	base/diameter_lib \
+	base/diameter_misc_sup \
+	base/diameter_peer \
+	base/diameter_peer_fsm \
+	base/diameter_peer_fsm_sup \
+	base/diameter_reg \
+	base/diameter_service \
+	base/diameter_service_sup \
+	base/diameter_session \
+	base/diameter_stats \
+	base/diameter_sup \
+	base/diameter_sync \
+	base/diameter_types \
+	base/diameter_watchdog \
+	base/diameter_watchdog_sup \
+	transport/diameter_etcp \
+	transport/diameter_etcp_sup \
+	transport/diameter_tcp \
+	transport/diameter_tcp_sup \
+	transport/diameter_sctp \
+	transport/diameter_sctp_sup \
+	transport/diameter_transport_sup
+
+# Handwritten (compile time) modules not included in the app file.
+CT_MODULES = \
+	base/diameter_callback \
+	base/diameter_dbg \
+	base/diameter_info \
+	compiler/diameter_codegen \
+	compiler/diameter_exprecs \
+	compiler/diameter_spec_scan \
+	compiler/diameter_spec_util \
+	compiler/diameter_make
+
+# Released hrl files in ../include intended for public consumption.
+EXTERNAL_HRLS = \
+	diameter.hrl \
+	diameter_gen.hrl
+
+# Released hrl files intended for private use.
+INTERNAL_HRLS = \
+	base/diameter_internal.hrl \
+	base/diameter_types.hrl \
+	compiler/diameter_forms.hrl
+
+# Released files relative to ../bin.
+BINS = \
+	diameterc
+
+# Released files relative to ../examples.
+EXAMPLES = \
+	GNUmakefile \
+	peer.erl \
+	client.erl \
+	client_cb.erl \
+	server.erl \
+	server_cb.erl \
+	relay.erl \
+	relay_cb.erl
diff --git a/lib/diameter/src/subdirs.mk b/lib/diameter/src/subdirs.mk
deleted file mode 100644
index 3e12d935bc..0000000000
--- a/lib/diameter/src/subdirs.mk
+++ /dev/null
@@ -1,21 +0,0 @@
-#-*-makefile-*-   ; force emacs to enter makefile-mode
-
-# %CopyrightBegin%
-#
-# Copyright Ericsson AB 2010-2011. All Rights Reserved.
-#
-# The contents of this file are subject to the Erlang Public License,
-# Version 1.1, (the "License"); you may not use this file except in
-# compliance with the License. You should have received a copy of the
-# Erlang Public License along with this software. If not, it can be
-# retrieved online at http://www.erlang.org/.
-#
-# Software distributed under the License is distributed on an "AS IS"
-# basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
-# the License for the specific language governing rights and limitations
-# under the License.
-#
-# %CopyrightEnd%
-
-SUB_DIRS = compiler app transport
-SUB_DIRECTORIES = $(SUB_DIRS)
-\ No newline at end of file
diff --git a/lib/diameter/src/transport/.gitignore b/lib/diameter/src/transport/.gitignore
deleted file mode 100644
index d9f072e262..0000000000
--- a/lib/diameter/src/transport/.gitignore
+++ /dev/null
@@ -1,3 +0,0 @@
-
-/depend.mk
-
diff --git a/lib/diameter/src/transport/Makefile b/lib/diameter/src/transport/Makefile
deleted file mode 100644
index 4b53100fd2..0000000000
--- a/lib/diameter/src/transport/Makefile
+++ /dev/null
@@ -1,141 +0,0 @@
-#
-# %CopyrightBegin%
-#
-# Copyright Ericsson AB 2010-2011. All Rights Reserved.
-#
-# The contents of this file are subject to the Erlang Public License,
-# Version 1.1, (the "License"); you may not use this file except in
-# compliance with the License. You should have received a copy of the
-# Erlang Public License along with this software. If not, it can be
-# retrieved online at http://www.erlang.org/.
-#
-# Software distributed under the License is distributed on an "AS IS"
-# basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
-# the License for the specific language governing rights and limitations
-# under the License.
-#
-# %CopyrightEnd%
-#
-#
-
-ifneq ($(ERL_TOP),)
-include $(ERL_TOP)/make/target.mk
-EBIN = ../../ebin
-include $(ERL_TOP)/make/$(TARGET)/otp.mk
-else
-include $(DIAMETER_TOP)/make/target.mk
-EBIN = ../../ebin
-include $(DIAMETER_TOP)/make/$(TARGET)/rules.mk
-endif
-
-
-# ----------------------------------------------------
-# Application version
-# ----------------------------------------------------
-
-include ../../vsn.mk
-VSN=$(DIAMETER_VSN)
-
-# ----------------------------------------------------
-# Release directory specification
-# ----------------------------------------------------
-
-RELSYSDIR = $(RELEASE_PATH)/lib/diameter-$(VSN)
-
-INCDIR = ../../include
-
-# ----------------------------------------------------
-# Target Specs
-# ----------------------------------------------------
-
-include modules.mk
-
-ERL_FILES = \
-	$(MODULES:%=%.erl) 
-
-TARGET_FILES = \
-	$(MODULES:%=$(EBIN)/%.$(EMULATOR))
-
-# ----------------------------------------------------
-# FLAGS
-# ----------------------------------------------------
-
-ifeq ($(TYPE),debug)
-ERL_COMPILE_FLAGS += -Ddebug
-endif
-
-include ../app/diameter.mk
-
-ERL_COMPILE_FLAGS += \
-	$(DIAMETER_ERL_COMPILE_FLAGS) \
-	-I$(INCDIR)
-
-# ----------------------------------------------------
-# Targets
-# ----------------------------------------------------
-
-debug:
-	@${MAKE} TYPE=debug opt
-
-opt: $(TARGET_FILES) 
-
-clean:
-	rm -f $(TARGET_FILES) 
-	rm -f errs core *~
-	rm -f depend.mk
-
-docs:
-
-info:
-	@echo ""
-	@echo "ERL_FILES = $(ERL_FILES)"
-	@echo "HRL_FILES = $(HRL_FILES)"
-	@echo ""
-	@echo "TARGET_FILES = $(TARGET_FILES)"
-	@echo ""
-
-# ----------------------------------------------------
-# Special Build Targets
-# ----------------------------------------------------
-
-# Invoked from ../app to add modules to the app file.
-$(APP_TARGET): force
-	M=`echo $(MODULES) | sed -e 's/^ *//' -e 's/ *$$//' -e 'y/ /,/'`; \
-	echo "/%TRANSPORT_MODULES%/s//$$M/;w;q" | tr ';' '\n' \
-	| ed -s $@
-
-# ----------------------------------------------------
-# Release Target
-# ----------------------------------------------------
-ifneq ($(ERL_TOP),)
-include $(ERL_TOP)/make/otp_release_targets.mk
-else
-include $(DIAMETER_TOP)/make/release_targets.mk
-endif
-
-release_spec: opt
-	$(INSTALL_DIR)  $(RELSYSDIR)/ebin
-	$(INSTALL_DATA) $(TARGET_FILES) $(RELSYSDIR)/ebin
-	$(INSTALL_DIR)  $(RELSYSDIR)/src/transport
-	$(INSTALL_DATA) $(ERL_FILES) $(HRL_FILES) $(RELSYSDIR)/src/transport
-
-release_docs_spec:
-
-force:
-
-# ----------------------------------------------------
-# Dependencies
-# ----------------------------------------------------
-
-depend: depend.mk
-
-# Generate dependencies makefile.
-depend.mk: ../app/depend.sed $(ERL_FILES) Makefile
-	for f in $(MODULES); do \
-	    sed -f $< $$f.erl | sed "s@/@/$$f@"; \
-	done \
-	> $@
-
--include depend.mk
-
-.PHONY: clean debug depend docs force info opt release_docs_spec release_spec
diff --git a/lib/diameter/src/transport/modules.mk b/lib/diameter/src/transport/modules.mk
deleted file mode 100644
index a0dc3cf2c0..0000000000
--- a/lib/diameter/src/transport/modules.mk
+++ /dev/null
@@ -1,29 +0,0 @@
-#-*-makefile-*-   ; force emacs to enter makefile-mode
-
-# %CopyrightBegin%
-# 
-# Copyright Ericsson AB 2010-2011. All Rights Reserved.
-# 
-# The contents of this file are subject to the Erlang Public License,
-# Version 1.1, (the "License"); you may not use this file except in
-# compliance with the License. You should have received a copy of the
-# Erlang Public License along with this software. If not, it can be
-# retrieved online at http://www.erlang.org/.
-# 
-# Software distributed under the License is distributed on an "AS IS"
-# basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
-# the License for the specific language governing rights and limitations
-# under the License.
-# 
-# %CopyrightEnd%
-
-MODULES = \
-	diameter_etcp \
-	diameter_etcp_sup \
-	diameter_tcp \
-	diameter_tcp_sup \
-	diameter_sctp \
-	diameter_sctp_sup \
-	diameter_transport_sup
-
-HRL_FILES =
diff --git a/lib/diameter/test/Makefile b/lib/diameter/test/Makefile
index 04e686c969..69bcabbfbb 100644
--- a/lib/diameter/test/Makefile
+++ b/lib/diameter/test/Makefile
@@ -17,15 +17,13 @@
 # %CopyrightEnd%
 
 ifeq ($(ERL_TOP),)
-TOP = $(DIAMETER_TOP)
+include $(DIAMETER_TOP)/make/target.mk
+include $(DIAMETER_TOP)/make/$(TARGET)/rules.mk
 else
-TOP = $(ERL_TOP)
-DIAMETER_TOP = $(TOP)/lib/diameter
+include $(ERL_TOP)/make/target.mk
+include $(ERL_TOP)/make/$(TARGET)/otp.mk
 endif
 
-include $(TOP)/make/target.mk
-include $(TOP)/make/$(TARGET)/otp.mk
-
 # ----------------------------------------------------
 # Application version
 # ----------------------------------------------------
@@ -46,30 +44,22 @@ RELSYSDIR = $(RELEASE_PATH)/diameter_test
 
 include modules.mk
 
-EBIN = .
-
-HRL_FILES = $(INTERNAL_HRL_FILES)
-ERL_FILES = $(MODULES:%=%.erl)
-
-SOURCE = $(HRL_FILES) $(ERL_FILES) 
+ERL_FILES    = $(MODULES:%=%.erl)
 TARGET_FILES = $(MODULES:%=%.$(EMULATOR))
 
 SUITE_MODULES = $(filter diameter_%_SUITE, $(MODULES))
-SUITES = $(SUITE_MODULES:diameter_%_SUITE=%)
-
-RELTEST_FILES = $(TEST_SPEC_FILE) $(COVER_SPEC_FILE) $(SOURCE)
+SUITES        = $(SUITE_MODULES:diameter_%_SUITE=%)
 
 # ----------------------------------------------------
 # FLAGS
 # ----------------------------------------------------
 
-include ../src/app/diameter.mk 
-
 # This is only used to compile suite locally when running with a
 # target like 'all' below. Target release_tests only installs source.
-ERL_COMPILE_FLAGS += $(DIAMETER_ERL_COMPILE_FLAGS) \
+ERL_COMPILE_FLAGS += +warn_export_vars \
+                     +warn_unused_vars \
                      -DDIAMETER_CT=true \
-                     -I $(DIAMETER_TOP)/src/app
+                     -I ../src/gen
 
 # ----------------------------------------------------
 # Targets
@@ -85,62 +75,52 @@ clean:
 
 realclean: clean
 	rm -rf log
-	rm -f errs core *~
-
-.PHONY: all tests debug opt clean realclean
 
 docs:
 
+list = echo $(1):; echo $($(1)) | tr ' ' '\n' | sort | sed 's@^@  @'
+
 info:
-	@echo "TARGET_FILES = $(TARGET_FILES)"
-	@echo
-	@echo "ERL_COMPILE_FLAGS = $(ERL_COMPILE_FLAGS)"
-	@echo "ERL  = $(ERL)"
-	@echo "ERLC = $(ERLC)"
+	@echo ========================================
+	@$(call list,MODULES)
 	@echo
-	@echo "HRL_FILES    = $(HRL_FILES)"
-	@echo "ERL_FILES    = $(ERL_FILES)"
-	@echo "TARGET_FILES = $(TARGET_FILES)"
-	@echo
-	@echo "SUITE_MODULES = $(SUITE_MODULES)"
-	@echo "SUITES        = $(SUITES)"
+	@$(call list,HRL_FILES)
 	@echo
+	@$(call list,SUITES)
+	@echo ========================================
 
 help:
+	@echo ========================================
+	@echo "Useful targets:"
 	@echo
-	@echo "Targets:"
-	@echo
-	@echo "    all"
-	@echo "        Run all test suites."
+	@echo "    all:"
+	@echo "        Compile and run all test suites."
 	@echo
-	@echo "    $(SUITES)"
-	@echo "        Run a specific test suite."
+	@echo "    $(SUITES):"
+	@echo "        Compile and run a specific test suite."
 	@echo
-	@echo "    tests"
+	@echo "    beam:"
 	@echo "        Compile all test-code."
 	@echo
-	@echo "    clean | realclean"
+	@echo "    clean | realclean:"
 	@echo "        Remove generated files."
 	@echo
-	@echo "    info"
-	@echo "        Prints various environment variables."
-	@echo "        May be useful when debugging this Makefile."
-	@echo
-	@echo "    help"
-	@echo "        Print this info."
-	@echo
+	@echo "    info:"
+	@echo "        Echo some interesting variables."
+	@echo ========================================
 
-.PHONY: docs info help
+.PHONY: all beam clean debug docs help info opt realclean tests
 
 # ----------------------------------------------------
 # Special Targets
 # ----------------------------------------------------
 
 # Exit with a non-zero status if the output looks to indicate failure.
-# diameter_ct:run/1 itself can't tell (it seems).
+# diameter_ct:run/1 itself can't tell (it seems). The absolute -pa is
+# because ct will change directories.
 $(SUITES): log tests
 	$(ERL) -noshell \
-	        -pa $(DIAMETER_TOP)/ebin \
+	        -pa $(realpath ../ebin) \
 	        -sname diameter_test_$@ \
 	        -s diameter_ct run diameter_$@_SUITE \
 	        -s init stop \
@@ -156,7 +136,11 @@ log:
 # Release Targets
 # ---------------------------------------------------- 
 
-include $(TOP)/make/otp_release_targets.mk
+ifeq ($(ERL_TOP),)
+include $(DIAMETER_TOP)/make/release_targets.mk
+else
+include $(ERL_TOP)/make/otp_release_targets.mk
+endif
 
 release_spec: 
 
@@ -164,7 +148,11 @@ release_docs_spec:
 
 release_tests_spec:
 	$(INSTALL_DIR)  $(RELSYSDIR)
-	$(INSTALL_DATA) $(RELTEST_FILES) $(RELSYSDIR)
+	$(INSTALL_DATA) $(TEST_SPEC_FILE) \
+	                $(COVER_SPEC_FILE) \
+	                $(HRL_FILES) \
+	                $(ERL_FILES) \
+	                $(RELSYSDIR)
 
 .PHONY: release_spec release_docs_spec release_test_specs
 
diff --git a/lib/diameter/test/modules.mk b/lib/diameter/test/modules.mk
index 531aca2799..75fdd0bd1d 100644
--- a/lib/diameter/test/modules.mk
+++ b/lib/diameter/test/modules.mk
@@ -38,5 +38,5 @@ MODULES = \
 	diameter_tls_SUITE \
 	diameter_failover_SUITE
 
-INTERNAL_HRL_FILES = \
+HRL_FILES = \
 	diameter_ct.hrl