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@@ -23,19 +23,27 @@ summary := @echo
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details := @true
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endif
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-# Pseudo-target to handle the case where submodules need to be
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-# re-initialised.
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+# Pseudo-target to check a git submodule has been properly initialised
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#
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-# $(eval $(call SubmoduleRequiredForFiles,FILENAMES)) to create a target that
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-# automatically runs 'git submodule update --init' if those files
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-# are missing, and fails if this is not possible.
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-define SubmoduleRequiredForFiles
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+# $(eval $(call SubmoduleCheck,FILENAMES,SUBMODULE_PATH)) to create a target that
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+# automatically runs 'git submodule update --init SUBMODULE_PATH' if any of
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+# the files in FILENAMES are missing, and fails if this is not possible.
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+#
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+# Will also print a WARNING if the submodule at SUBMODULE_PATH appears
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+# to require an update.
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+define SubmoduleCheck
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$(1):
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- @echo "WARNING: Missing submodule for $$@..."
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+ @echo "WARNING: Missing submodule $(2) for $$@..."
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$(Q) [ -d ${IDF_PATH}/.git ] || ( echo "ERROR: esp-idf must be cloned from git to work."; exit 1)
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$(Q) [ -x $(which git) ] || ( echo "ERROR: Need to run 'git submodule --init' in esp-idf root directory."; exit 1)
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@echo "Attempting 'git submodule update --init' in esp-idf root directory..."
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- cd ${IDF_PATH} && git submodule update --init
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+ cd ${IDF_PATH} && git submodule update --init $(2)
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+
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+# Parse 'git submodule status' output for out-of-date submodule.
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+# Status output prefixes status line with '+' if the submodule commit doesn't match
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+ifneq ("$(shell cd ${IDF_PATH} && git submodule status $(2) | grep '^+')","")
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+$$(info WARNING: git submodule $2 may be out of date. Run 'git submodule update' to update.)
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+endif
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endef
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