Makefilew.协议缓冲区和自动依赖-Makefilew.ProtocolBufferandAutomaticDependency

6  

Another solution is to make your dependency files depend on the results of the protocol buffer generation. The following snippet contains all steps to do that, since it is hard to explain them one by one, with an explanation of some items at the bottom:

另一种解决方案是使依赖文件依赖于协议缓冲区生成的结果。下面的代码片段包含了实现这一目的的所有步骤，因为很难逐个地对它们进行解释，在底部有一些项目的解释:

CXX_FLAGS      := $(shell pkg-config --cflags protobuf) -xc++
LD_FLAGS       := $(shell pkg-config --libs protobuf)

PROTOS         := $(wildcard *.proto)
PROTO_OBJS     := $(PROTOS:.proto=.pb.o)

BINS     := my_binary

SRCS     := $(wildcard *.cu)
OBJS     := $(SRCS:.cu=.o)
DEPS     := $(SRCS:.cu=.d)

PBSRCS   := $(wildcard *.proto)
PBOBJS   := $(PROTOS:.proto=.pb.o)
PBGENS   := $(PROTOS:.proto=.pb.cc) $(PROTOS:.proto=.pb.h)

all: $(BINS)

clean:
        rm -f $(BINS) $(OBJS) $(DEPS) $(PBOBJS) $(PBGENS)

$(BINS): $(OBJS)
$(OBJS): $(DEPS)
$(DEPS): $(PBOBJS)

.PRECIOUS: $(PBGENS)

%.d: %.cu
        $(CXX) -M $(CXX_FLAGS) $<> $@

%.pb.cc: %.proto
        protoc --cpp_out=. $<

%.pb.o : %.pb.cc
        $(CXX) $(CXX_FLAGS) -c -o $@ $<

%.o: %.cu
        $(CXX) $(CXX_FLAGS) -c -o $@ $<

$(BINS): %: %.o
        $(CXX) $(LD_FLAGS) -o $@ $(PROTO_OBJS) $^

ifneq ($(MAKECMDGOALS),clean)
-include $(DEPS)
endif

The pkg-config command is not required, but is convenient if you want to automatically obtain compilation and linking flags relevant for the protobuf files. Of course, you have to add your own flags to this variable.

不需要pkg-config命令，但是如果您想要自动获得与protobuf文件相关的编译和链接标志，那么它是很方便的。当然，您必须向这个变量添加自己的标志。

The -xc++ is probably useless for you, but used here in order to be able to work with .cu files and have them interpreted as C++; even for compilers different than nvcc.

-xc++可能对您毫无用处，但在这里使用它是为了能够处理.cu文件并将其解释为c++;即使是与nvcc不同的编译器。

The line $(DEPS): $(PBOBJS) is the indication that the protobuf files should be created and compiled before the dependencies are created. There a several ways to achieve this, so this is just an example of how to do it.

line $(DEPS): $(PBOBJS)是在创建依赖项之前应该创建和编译原始buf文件的指示。有几种方法可以做到这一点，这只是一个例子。

The .PRECIOUS line instructs make to keep the generated protobuf files. In this example snippet, those files are considered intermediate and as such would be deleted without this line.

宝贵的行指示保持生成的protobuf文件。在这个示例代码片段中，这些文件被视为中间文件，如果没有这一行，将会删除这些文件。

I posted this as a separate answer, because the previous one and this one do not have much in common.

我把这个作为一个单独的答案，因为前一个和这个没有太多的共同点。

1  

When building the dependencies, you could opt to continue even if header files are missing. Using cpp or gcc, that can be achieved by using the options -MM -MG. I have no experience with NVCC, but I did not see any support those flags in the manual. If that is true, then you could try switching to cpp for the dependency generation only. From the cpp man page:

在构建依赖项时，您可以选择继续，即使头文件丢失。使用cpp或gcc，可以通过使用选项-MM -MG来实现。我没有使用NVCC的经验，但是我在手册中没有看到任何对这些标志的支持。如果这是正确的，那么您可以尝试仅为依赖项生成切换到cpp。cpp手册页:

-MG assumes missing header files are generated files and adds them to the dependency list without raising an error.

-MG假设丢失的头文件是生成的文件，并将它们添加到依赖列表中，不会引起错误。

Your pattern rule %.pb: %.proto does not seem right to me, by the way. It is %.pb.h and %.pb.cc that depend on %.proto and with the current approach, make will not know how to resolve any dependencies on %.pb.h because it will not know how to create the .pb.h file.

你的模式规则%。铅:%。顺便说一句，proto在我看来不太对。% .pb。h和% .pb。cc依赖于%。使用当前的方法，make将不知道如何解决对%.pb的任何依赖。因为它不知道如何创建。pb。h文件。