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cmd/link: provide a way to always use external linking if cgo is used #43525

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mwhudson opened this issue Jan 5, 2021 · 3 comments
Open

cmd/link: provide a way to always use external linking if cgo is used #43525

mwhudson opened this issue Jan 5, 2021 · 3 comments
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compiler/runtime Issues related to the Go compiler and/or runtime. NeedsInvestigation Someone must examine and confirm this is a valid issue and not a duplicate of an existing one.
Milestone
Unplanned

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@mwhudson
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mwhudson commented Jan 5, 2021

This came up as a potential solution for #43505 but I've wanted it for other reasons too (mostly because of other tools like patchelf that rely on implementation details of more common linkers): I would like a way to always use external linking if cgo is used, or to put it another way, never use internal linking to generate a dynamically linked binary. -linkmode and GO_EXTLINK_ENABLED control aspects of this behaviour but can't be used to get what I want.
@toothrot toothrot added the NeedsInvestigation Someone must examine and confirm this is a valid issue and not a duplicate of an existing one. label Jan 8, 2021
@toothrot
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toothrot commented Jan 8, 2021

/cc @cherrymui @rsc @mdempsky @ianlancetaylor

@cherrymui
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Could you explain why -linkmode=external doesn't do what you want? It will use external linking even if cgo is not used, but that doesn't seem a big problem.

@mwhudson
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If you always external link, you always get a dynamic executable. I wouldn't mind that, but I thinks some other people might.

@gopherbot gopherbot added the compiler/runtime Issues related to the Go compiler and/or runtime. label Jul 13, 2022
@seankhliao seankhliao added this to the Unplanned milestone Aug 27, 2022
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Labels
compiler/runtime Issues related to the Go compiler and/or runtime. NeedsInvestigation Someone must examine and confirm this is a valid issue and not a duplicate of an existing one.
Projects
Go Compiler / Runtime
Status: Triage Backlog
Milestone
Unplanned
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@toothrot @mwhudson @gopherbot @seankhliao @cherrymui