diff --git a/core/Makefile b/core/Makefile
index a0961a8..f4669f2 100644
--- a/core/Makefile
+++ b/core/Makefile
@@ -1100,8 +1100,12 @@
 
 .PHONY: installed-file-list
 installed-file-list: $(INSTALLED_FILES_FILE)
-$(call dist-for-goals, sdk, $(INSTALLED_FILES_FILE))
+ifneq ($(filter sdk win_sdk,$(MAKECMDGOALS)),)
+$(call dist-for-goals, sdk win_sdk, $(INSTALLED_FILES_FILE))
+endif
+ifneq ($(filter sdk_addon,$(MAKECMDGOALS)),)
 $(call dist-for-goals, sdk_addon, $(INSTALLED_FILES_FILE))
+endif
 
 # -----------------------------------------------------------------
 # A zip of the tests that are built when running "make tests".
@@ -1346,9 +1350,10 @@
 
 # Is a Windows SDK requested? If so, we need some definitions from here
 # in order to find the Linux SDK used to create the Windows one.
+MAIN_SDK_NAME := $(sdk_name)
+MAIN_SDK_DIR  := $(sdk_dir)
+MAIN_SDK_ZIP  := $(INTERNAL_SDK_TARGET)
 ifneq ($(filter win_sdk,$(MAKECMDGOALS)),)
-LINUX_SDK_NAME := $(sdk_name)
-LINUX_SDK_DIR  := $(sdk_dir)
 include $(TOPDIR)development/build/tools/windows_sdk.mk
 endif
 
@@ -1373,3 +1378,12 @@
 # -----------------------------------------------------------------
 # These are some additional build tasks that need to be run.
 include $(sort $(wildcard $(BUILD_SYSTEM)/tasks/*.mk))
+-include $(sort $(wildcard vendor/*/build/tasks/*.mk))
+
+# -----------------------------------------------------------------
+# Create SDK repository packages. Must be done after tasks/* since
+# we need the addon rules defined.
+ifneq ($(sdk_repo_goal),)
+include $(TOPDIR)development/build/tools/sdk_repo.mk
+endif
+
diff --git a/core/main.mk b/core/main.mk
index fc152e2..b288080 100644
--- a/core/main.mk
+++ b/core/main.mk
@@ -190,13 +190,8 @@
 ###
 
 is_sdk_build :=
-ifneq ($(filter sdk,$(MAKECMDGOALS)),)
-is_sdk_build := true
-endif
-ifneq ($(filter win_sdk,$(MAKECMDGOALS)),)
-is_sdk_build := true
-endif
-ifneq ($(filter sdk_addon,$(MAKECMDGOALS)),)
+
+ifneq ($(filter sdk win_sdk sdk_addon,$(MAKECMDGOALS)),)
 is_sdk_build := true
 endif
 
@@ -271,6 +266,11 @@
 ## sdk ##
 
 ifdef is_sdk_build
+
+# Detect if we want to build a repository for the SDK
+sdk_repo_goal := $(strip $(filter sdk_repo,$(MAKECMDGOALS)))
+MAKECMDGOALS := $(strip $(filter-out sdk_repo,$(MAKECMDGOALS)))
+
 ifneq ($(words $(filter-out $(INTERNAL_MODIFIER_TARGETS),$(MAKECMDGOALS))),1)
 $(error The 'sdk' target may not be specified with any other targets)
 endif
@@ -762,11 +762,13 @@
 .PHONY: sdk
 ALL_SDK_TARGETS := $(INTERNAL_SDK_TARGET)
 sdk: $(ALL_SDK_TARGETS)
-$(call dist-for-goals,sdk, \
-    $(ALL_SDK_TARGETS) \
-    $(SYMBOLS_ZIP) \
-    $(INSTALLED_BUILD_PROP_TARGET) \
-)
+ifneq ($(filter sdk win_sdk,$(MAKECMDGOALS)),)
+$(call dist-for-goals,sdk win_sdk, \
+	$(ALL_SDK_TARGETS) \
+	$(SYMBOLS_ZIP) \
+	$(INSTALLED_BUILD_PROP_TARGET) \
+ )
+endif
 
 .PHONY: findbugs
 findbugs: $(INTERNAL_FINDBUGS_HTML_TARGET) $(INTERNAL_FINDBUGS_XML_TARGET)
diff --git a/core/tasks/sdk-addon.mk b/core/tasks/sdk-addon.mk
index 9133312..e21fedc 100644
--- a/core/tasks/sdk-addon.mk
+++ b/core/tasks/sdk-addon.mk
@@ -94,6 +94,10 @@
 .PHONY: sdk_addon
 sdk_addon: $(full_target)
 
+# Keep the name of the addon final zip around for sdk_repo.
+# This is used by development/build/tools/sdk_repo.mk.
+ADDON_SDK_ZIP := $(full_target)
+
 $(call dist-for-goals, sdk_addon, $(full_target))
 
 else # addon_name