protoc returns Unknown flag: --go-grpc_opts

[Jeff Kayser]

[jeffkayser@localhost ch12]$ protoc --go-grpc_out=. --go-grpc_opts=source_relative housework/v1/housework.proto
Unknown flag: --go-grpc_opts

[jeffkayser@localhost ch12]$ pwd
/home/jeffkayser/projects/jkayser/network/ch12

[jeffkayser@localhost ch12]$ 

Fedora 38:

[jeffkayser@localhost ch12]$ uname -a
Linux localhost.localdomain 6.3.8-200.fc38.x86_64 #1 SMP PREEMPT_DYNAMIC Thu Jun 15 02:15:40 UTC 2023 x86_64 GNU/Linux

[jeffkayser@localhost ch12]$

 

Go 1.20.5

[jeffkayser@localhost ch12]$ go version
go version go1.20.5 linux/amd64

[jeffkayser@localhost ch12]$ 

Protocol buffers:

[jeffkayser@localhost ch12]$ which protoc
/usr/bin/protoc
[jeffkayser@localhost ch12]$ which protoc-gen-go
/usr/bin/protoc-gen-go
[jeffkayser@localhost ch12]$ which protoc-gen-go-grpc
/usr/bin/protoc-gen-go-grpc
[jeffkayser@localhost ch12]$ /usr/bin/protoc --version
libprotoc 3.19.6

[jeffkayser@localhost ch12]$ /usr/bin/protoc-gen-go --version
protoc-gen-go v1.28.1

[jeffkayser@localhost ch12]$ /usr/bin/protoc-gen-go-grpc --version
protoc-gen-go-grpc 1.2.0

[jeffkayser@localhost ch12]$

Any help would be appreciated.

Jeff Kayser

[Daz Wilkin]

It's `--go-grpc_opt` (no `s`)

[Jeff Kayser]

Hi, Daz.

Doh!  Now I feel really stupid.  Thanks for letting me know.

Jeff Kayser

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[Daz Wilkin]

You should not.

We've all done it .... mix hyphens and underscores .... it's confusing.