Missing input file with protoc in protocol buffer

Question

I currently have a file called addressbook.proto in next to my protoc.exe. I am having difficulty generating the .h and the .cc file. Here is what I am doing

protoc --cpp_out=c:\addressbook.proto

However I get the following response

Missing input file.

Any suggestions on what I might be doing wrong ?

The -cpp_out tag specifies the output directory for generated c source code. — Bruce Martin
– Bruce Martin, Commented Jul 7, 2013 at 20:16

Bruce Martin · Accepted Answer · 2013-07-07 20:19:09Z

33

The -cpp_out tag specifies the output directory for generated c source code.

I would suggest trying (if proto is actually stored under the c: directory c:\addressbook.proto)

protoc c:\addressbook.proto --cpp_out=./

or

protoc addressbook.proto --cpp_out=./

answered Jul 7, 2013 at 20:19

Bruce Martin

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extraj · Accepted Answer · 2023-02-06 09:30:55Z

5

Since the only answer in this thread didn't lead me to the solution I needed, here it is.

The syntax for calling the protoc.exe is as follows:

protoc --proto_path=<proto_directory> --cpp_out=<output_directory> <proto_file>

Important is that the argument to proto_path is a directory instead the specific .proto-file path. The actual proto files used are appended at the end of the command (<proto_file>).

answered Feb 6, 2023 at 9:30

extraj

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