Hey guys, Is it possible to compile a Go program to

a dynamic shared library?
dll extension for Windows and so for Linux I mean.

07.11.2021

35 ответов

32 просмотра

Roman Sharkov

why?

07.11.2021

Raymond Автор вопроса

Roman Sharkov
why?

LOL. For many reasons. To be used in a Rust program for example.

07.11.2021

Roman Sharkov

Raymond
LOL. For many reasons. To be used in a Rust progra...

what exactly is funny tho? calling Go from another language is near impossible (there are very hacky ways but you shouldn't do it in production) IPC is preferable

07.11.2021

Raymond Автор вопроса

Roman Sharkov
what exactly is funny tho? calling Go from another...

Your question was funny man. The reasons of using shared libraries are clear enough.

07.11.2021

Akshit

yes

07.11.2021

Raymond Автор вопроса

Roman Sharkov
what exactly is funny tho? calling Go from another...

Why shouldn't we use it in production?

07.11.2021

Raymond Автор вопроса

Akshit
yes

Can explain it? How can I do it?

07.11.2021

Akshit

Roman Sharkov
what exactly is funny tho? calling Go from another...

its not hacky at all :) you can literally use cgo exports and build with buildtype=c-shared or c-archive. then use the resulting dll / archive

07.11.2021

Roman Sharkov

Raymond
Why shouldn't we use it in production?

https://blog.filippo.io/rustgo/ here's an indepth article about it

07.11.2021

Anchit

Raymond
Why shouldn't we use it in production?

its mostly difficult and there are better methods like RPC, APIs or pub-sub queues, etc

07.11.2021

Akshit

Raymond
Can explain it? How can I do it?

1. you need cgo exports (please google this), and you need to compile with cgo enabled 2. build with buildmode=c-shared or c-archive and link it with anything. it will work with stuff that supports calling C functions

07.11.2021

Roman Sharkov

Akshit
1. you need cgo exports (please google this), and ...

cgo != Go

07.11.2021

Akshit

Anchit
its mostly difficult and there are better methods ...

those are for servers, sometimes you need to go it on the client side for example for a gui application

07.11.2021

Akshit

Roman Sharkov
cgo != Go

not actual C, just exporting go functions for use with C like you do with cgo

07.11.2021

Anchit

Akshit
those are for servers, sometimes you need to go it...

yes, a GUI application can start two different processes. Those details will be invisible to the user

07.11.2021

Raymond Автор вопроса

Roman Sharkov
https://blog.filippo.io/rustgo/ here's an indepth...

I actually meant 'calling Go from Rust' not 'calling Rust from Go'

07.11.2021

Akshit

Anchit
yes, a GUI application can start two different pro...

which has its own problems 1. shipping another executable 2. IPC is platform dependent

07.11.2021

Akshit

Raymond
I actually meant 'calling Go from Rust' not 'calli...

rust can call C functions and go can expose a C ABI

07.11.2021

Anchit

Akshit
which has its own problems 1. shipping another exe...

youre already shipping two files, a dynamic lib and an executable. why not ship two bins and something to start both (one in the background) insteadf

07.11.2021

Raymond Автор вопроса

Akshit
rust can call C functions and go can expose a C AB...

I know how Rust can call C functions. I've already did. Thanks for explaination.

07.11.2021

Akshit

Anchit
youre already shipping two files, a dynamic lib an...

build as c-archive and statically link

07.11.2021

Akshit

Raymond
I know how Rust can call C functions. I've already...

have you worked with cgo? if yes then you know how to expose a go function to C

07.11.2021

Raymond Автор вопроса

Akshit
have you worked with cgo? if yes then you know how...

I haven't actually used cgo. I barely know Golang.

07.11.2021

Akshit

Raymond
I haven't actually used cgo. I barely know Golang.

hmmm but i guess that answers your question

07.11.2021

Raymond Автор вопроса

Akshit
hmmm but i guess that answers your question

Yup

07.11.2021

Roman Sharkov

Raymond
I actually meant 'calling Go from Rust' not 'calli...

https://stackoverflow.com/questions/6125683/call-go-functions-from-c according to my personal experience it's really hacky and you should try to avoid it. what's the reason you want non-Go code to call Go?

07.11.2021

Akshit

Roman Sharkov
https://stackoverflow.com/questions/6125683/call-g...

its not that hacky

07.11.2021

Raymond Автор вопроса

Roman Sharkov
https://stackoverflow.com/questions/6125683/call-g...

I'm currently learning Go and I thought it would be fun to do it since I already did in other programming languages.

07.11.2021

Roman Sharkov

Akshit
its not that hacky

still, whenever cgo is involved I already start doubting the approach 🙂

07.11.2021

Roman Sharkov

Raymond
I'm currently learning Go and I thought it would b...

well, if you're learning Go then why even touch cgo in the first place? 😅 https://dave.cheney.net/2016/01/18/cgo-is-not-go

07.11.2021

Akshit

Roman Sharkov
well, if you're learning Go then why even touch cg...

also this, don't touch cgo if possible

07.11.2021

Raymond Автор вопроса

Roman Sharkov
well, if you're learning Go then why even touch cg...

Why should I avoid it? I always try this when learning a new compiled language and I learn a lot with it.

07.11.2021

Roman Sharkov

Raymond
Why should I avoid it? I always try this when lear...

read the article, it's a great read 🙂

07.11.2021

Raymond Автор вопроса

Roman Sharkov
read the article, it's a great read 🙂

Ofc. Thanks for sharing.

07.11.2021

Raymond Автор вопроса

Roman Sharkov
well, if you're learning Go then why even touch cg...

Wow

07.11.2021

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