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# This is a simple Makefile that generates client library source code
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# for Google APIs using Protocol Buffers and gRPC for any supported
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# language. However, it does not compile the generated code into final
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# libraries that can be directly used with application code.
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#
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# Syntax example: make OUTPUT=./output LANGUAGE=java
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#
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# Choose the output directory
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OUTPUT ?= ./gens
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# Choose the target language.
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LANGUAGE ?= cpp
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# Compile the entire repository
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#
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# NOTE: if the "protoc" command is not in the PATH or the protobuf include
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# directory is not "/usr/local/include", you need to modify this file.
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#
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FLAGS+= --proto_path=.:/usr/local/include
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ifeq ($(LANGUAGE),go)
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FLAGS+= --$(LANGUAGE)_out=plugins=grpc:$(OUTPUT)
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else
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FLAGS+= --$(LANGUAGE)_out=$(OUTPUT) --grpc_out=$(OUTPUT)
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FLAGS+= --plugin=protoc-gen-grpc=/usr/local/bin/grpc_$(LANGUAGE)_plugin
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endif
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ifeq ($(LANGUAGE),go)
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SUFFIX:= pb.go
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endif
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ifeq ($(LANGUAGE),cpp)
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SUFFIX:= pb.cc
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endif
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DEPS:= $(shell find . -type f -name '*.proto' | sed "s/proto$$/$(SUFFIX)/")
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all: supported_lang $(DEPS)
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supported_lang:
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ifndef SUFFIX
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$(error unsupported language: [$(LANGUAGE)])
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endif
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%.$(SUFFIX): %.proto
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mkdir -p $(OUTPUT)
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protoc $(FLAGS) $(dir $<)*.proto
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clean:
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rm $(patsubst %,$(OUTPUT)/%,$(DEPS)) 2> /dev/null
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rm -rd $(OUTPUT)
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