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# MAKEOVERRIDES= effectively "equalizes" GNU-ish and SysV-ish make flavors,
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# which in turn eliminates ambiguities in variable treatment with -e.
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BUILD_CMD= if [ -d "$$dir" ]; then \
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( cd $$dir && echo "making $$target in $$dir..." && \
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$(CLEARENV) && $(MAKE) -e $(BUILDENV) TOP=.. DIR=$$dir $$target \
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RECURSIVE_BUILD_CMD=for dir in $(DIRS); do $(BUILD_CMD); done
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@[ -n "$(THIS)" ] && $(CLEARENV) && $(MAKE) $(THIS) -e $(BUILDENV)