protocolbuffers / protocolbuffers/protobuf

protoc --grpc_out should look on Windows path for grpc_cpp_plugin.exe

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c++ enhancement help wanted protoc
Dominant language
C++
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Avg merge
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Description

What language does this apply to?
Probably all, but I've only tried the cpp plugin

If it's a proto syntax change, is it for proto2 or proto3?
Not syntax change

If it's about generated code change, what programming language?
Not generated code change

Describe the problem you are trying to solve.
On Windows, I have grpc_cpp_plugin.exe in my PATH. However, I cannot specify the plugin this way:
$ protoc --grpc_out=. --plugin=protoc-gen-grpc=grpc_cpp_plugin.exe things_rpc.proto
--grpc_out: protoc-gen-grpc: The system cannot find the file specified.

Describe the solution you'd like
Search the PATH for plugins

Describe alternatives you've considered
While I can specify the full path to plugin, it would be better to search PATH to make setting up build environments easier.

Contributor guide

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First steps

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  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start by tracing protoc's --plugin and --grpc_out handling, using the Windows command shown in the issue as the reproduction. Done means a plugin executable on PATH is found for the command without requiring its full path, while existing explicit-path behavior still works.

Written by the indexing model from the issue text.

Assessment

Tech stack
cpp, grpc
Domain
cli, compilers
Issue type
Bug
Difficulty
3/5
Estimated time
1-2 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
38/100

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