kconfig: Add -MP option so .d files include empty targets
Prevents make-level errors when switching IDF versions, as headers may be removed. Similar to some mentioned here: https://github.com/espressif/esp-idf/issues/712
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@ -165,7 +165,7 @@ check-lxdialog := $(SRCDIR)/lxdialog/check-lxdialog.sh
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# Use recursively expanded variables so we do not call gcc unless
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# we really need to do so. (Do not call gcc as part of make mrproper)
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CFLAGS += $(shell $(CONFIG_SHELL) $(check-lxdialog) -ccflags) \
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-DLOCALE -MMD
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-DLOCALE -MMD -MP
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CFLAGS += -I "." -I "${SRCDIR}"
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