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# This is an include file for Makefiles. It provides rules for building
# .pb.c and .pb.h files out of .proto, as well the path to nanopb core.
# Path to the nanopb root directory
NANOPB_DIR := $(abspath $(dir $(lastword $(MAKEFILE_LIST)))../)
# Files for the nanopb core
NANOPB_CORE = $(NANOPB_DIR)/pb_encode.c $(NANOPB_DIR)/pb_decode.c
# Check whether to use binary version of nanopb_generator or the
# system-supplied python interpreter.
ifneq "$(wildcard $(NANOPB_DIR)/generator-bin)" ""
# Binary package
PROTOC = $(NANOPB_DIR)/generator-bin/protoc
PROTOC_OPTS =
else
# Source only or git checkout
PROTOC = protoc
ifdef windir
PROTOC_OPTS = --plugin=protoc-gen-nanopb=$(NANOPB_DIR)/generator/protoc-gen-nanopb.bat
else
PROTOC_OPTS = --plugin=protoc-gen-nanopb=$(NANOPB_DIR)/generator/protoc-gen-nanopb
endif
endif
# Rule for building .pb.c and .pb.h
%.pb.c %.pb.h: %.proto $(wildcard %.options)
$(PROTOC) $(PROTOC_OPTS) --nanopb_out=. $<
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