From a0563a428a2eb2d842dada83437b971ccc8b9fb5 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Lo=C3=AFc=20Hoguin?= <essen@ninenines.eu>
Date: Thu, 27 Aug 2015 18:31:58 +0200
Subject: Add support for external plugins

Plugins can automatically be fetched and included from
dependencies. All that is needed is to add either the
dependency name or the name + path of the plugin to the
DEP_PLUGINS variable.

Useful for allowing tools to easily add support for new
targets, adding templates or for putting the whole build
ecosystem in one common dependency.
---
 core/deps.mk | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

(limited to 'core/deps.mk')

diff --git a/core/deps.mk b/core/deps.mk
index 44b822e..4ac58ca 100644
--- a/core/deps.mk
+++ b/core/deps.mk
@@ -573,3 +573,18 @@ $(foreach dep,$(DEPS),$(eval $(call dep_target,$(dep))))
 
 distclean-deps:
 	$(gen_verbose) rm -rf $(DEPS_DIR)
+
+# External plugins.
+
+DEP_PLUGINS ?=
+
+define core_dep_plugin
+-include $(DEPS_DIR)/$(1)
+
+$(DEPS_DIR)/$(1): $(DEPS_DIR)/$(2) ;
+endef
+
+$(foreach p,$(DEP_PLUGINS),\
+	$(eval $(if $(findstring /,$p),\
+		$(call core_dep_plugin,$p,$(firstword $(subst /, ,$p))),\
+		$(call core_dep_plugin,$p/plugins.mk,$p))))
-- 
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