From 626d9efa74685720020e816f3a917b7591d3cf7a Mon Sep 17 00:00:00 2001
From: James <>
Date: Sat, 26 Sep 2015 12:29:31 +0100
Subject: trunk-47048

---
 include/subdir.mk | 76 +++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 76 insertions(+)
 create mode 100644 include/subdir.mk

(limited to 'include/subdir.mk')

diff --git a/include/subdir.mk b/include/subdir.mk
new file mode 100644
index 0000000..8dc9a78
--- /dev/null
+++ b/include/subdir.mk
@@ -0,0 +1,76 @@
+#
+# Copyright (C) 2007 OpenWrt.org
+#
+# This is free software, licensed under the GNU General Public License v2.
+# See /LICENSE for more information.
+#
+
+ifeq ($(MAKECMDGOALS),prereq)
+  SUBTARGETS:=prereq
+  PREREQ_ONLY:=1
+else
+  SUBTARGETS:=clean download prepare compile install update refresh prereq dist distcheck configure
+endif
+
+subtarget-default = $(filter-out ., \
+	$(if $($(1)/builddirs-$(2)),$($(1)/builddirs-$(2)), \
+	$(if $($(1)/builddirs-default),$($(1)/builddirs-default), \
+	$($(1)/builddirs))))
+
+define subtarget
+  $(call warn_eval,$(1),t,T,$(1)/$(2): $($(1)/) $(foreach bd,$(call subtarget-default,$(1),$(2)),$(1)/$(bd)/$(2)))
+
+endef
+
+define ERROR
+	($(call MESSAGE, $(2)); $(if $(BUILD_LOG), echo "$(2)" >> $(BUILD_LOG_DIR)/$(1)/error.txt))
+endef
+
+lastdir=$(word $(words $(subst /, ,$(1))),$(subst /, ,$(1)))
+diralias=$(if $(findstring $(1),$(call lastdir,$(1))),,$(call lastdir,$(1)))
+
+# Parameters: <subdir>
+define subdir
+  $(call warn,$(1),d,D $(1))
+  $(foreach bd,$($(1)/builddirs),
+    $(call warn,$(1),d,BD $(1)/$(bd))
+    $(foreach target,$(SUBTARGETS),
+      $(foreach btype,$(buildtypes-$(bd)),
+        $(call warn_eval,$(1)/$(bd),t,T,$(1)/$(bd)/$(btype)/$(target): $(if $(QUILT),,$($(1)/$(bd)/$(btype)/$(target)) $(call $(1)//$(btype)/$(target),$(1)/$(bd)/$(btype))))
+		  $(if $(call debug,$(1)/$(bd),v),,@)+$$(SUBMAKE) -r -C $(1)/$(bd) $(btype)-$(target) $(if $(findstring $(bd),$($(1)/builddirs-ignore-$(btype)-$(target))), || $(call ERROR,$(1),   ERROR: $(1)/$(bd) [$(btype)] failed to build.))
+        $(if $(call diralias,$(bd)),$(call warn_eval,$(1)/$(bd),l,T,$(1)/$(call diralias,$(bd))/$(btype)/$(target): $(1)/$(bd)/$(btype)/$(target)))
+      )
+      $(call warn_eval,$(1)/$(bd),t,T,$(1)/$(bd)/$(target): $(if $(QUILT),,$($(1)/$(bd)/$(target)) $(call $(1)//$(target),$(1)/$(bd))))
+	  	$(if $(BUILD_LOG),@mkdir -p $(BUILD_LOG_DIR)/$(1)/$(bd))
+        $(foreach variant,$(if $(BUILD_VARIANT),$(BUILD_VARIANT),$(if $(strip $($(1)/$(bd)/variants)),$($(1)/$(bd)/variants),$(if $($(1)/$(bd)/default-variant),$($(1)/$(bd)/default-variant),__default))),
+			$(if $(call debug,$(1)/$(bd),v),,@)+$(if $(BUILD_LOG),set -o pipefail;) $$(SUBMAKE) -r -C $(1)/$(bd) $(target) BUILD_VARIANT="$(filter-out __default,$(variant))" $(if $(BUILD_LOG),SILENT= 2>&1 | tee $(BUILD_LOG_DIR)/$(1)/$(bd)/$(target).txt) $(if $(findstring $(bd),$($(1)/builddirs-ignore-$(target))), || $(call ERROR,$(1),   ERROR: $(1)/$(bd) failed to build$(if $(filter-out __default,$(variant)), (build variant: $(variant))).))
+        )
+      $(if $(PREREQ_ONLY)$(DUMP_TARGET_DB),,
+        # aliases
+        $(if $(call diralias,$(bd)),$(call warn_eval,$(1)/$(bd),l,T,$(1)/$(call diralias,$(bd))/$(target): $(1)/$(bd)/$(target)))
+	  )
+	)
+  )
+  $(foreach target,$(SUBTARGETS),$(call subtarget,$(1),$(target)))
+endef
+
+ifndef DUMP_TARGET_DB
+# Parameters: <subdir> <name> <target> <depends> <config options> <stampfile location>
+define stampfile
+  $(1)/stamp-$(3):=$(if $(6),$(6),$(STAGING_DIR))/stamp/.$(2)_$(3)$(5)
+  $$($(1)/stamp-$(3)): $(TMP_DIR)/.build $(4)
+	@+$(SCRIPT_DIR)/timestamp.pl -n $$($(1)/stamp-$(3)) $(1) $(4) || \
+		$(MAKE) $(if $(QUIET),--no-print-directory) $$($(1)/flags-$(3)) $(1)/$(3)
+	@mkdir -p $$$$(dirname $$($(1)/stamp-$(3)))
+	@touch $$($(1)/stamp-$(3))
+
+  $$(if $(call debug,$(1),v),,.SILENT: $$($(1)/stamp-$(3)))
+
+  .PRECIOUS: $$($(1)/stamp-$(3)) # work around a make bug
+
+  $(1)//clean:=$(1)/stamp-$(3)/clean
+  $(1)/stamp-$(3)/clean: FORCE
+	@rm -f $$($(1)/stamp-$(3))
+
+endef
+endif
-- 
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