golang/go

cmd/go: go tool rejects #cgo LDFLAGS: -Wl,-rpath,@executable_path/../Frameworks

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#40,559 opened on Aug 3, 2020

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Description

What version of Go are you using (go version)?

Does this issue reproduce with the latest release?

Yes

What operating system and processor architecture are you using (go env)?

What did you do?

I tried to build a MacOS bundle using dynamically linked libraries. As per convention these are stored in MyApp.app/Contents/Frameworks which requires LC_RPATH to point there.

I added the following flag:

#cgo LDFLAGS: -Wl,-rpath,@executable_path/../Frameworks

What did you expect to see?

go build builds binary with LC_RPATH set to @executable_path/../Frameworks

What did you see instead?

I got an invalid flag error upon running go build.

I also tried replacing @executable_path for $ORIGIN as I would in Linux but then I got an image not found error when running the resulting binary (I assume this isn't supported on MacOS).

Contributor guide

Research direction
Investigate why the go tool rejects `@executable path` in LDFLAGS. Look at the validation of LDFLAGS in the go tool source, particularly around CGO and flag parsing. Consider how `@executable path` is treated on macOS and whether there is a whitelist or validation that disallows it.
Tech stack
go
Domain
build system
Issue type
Bug
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
3
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
1-3 hours
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
Active
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
Clear
Prerequisites
Gocgolinker
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
40