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cmd/cgo: env CGO_LDFLAGS not working but config #cgo LDFLAGS works #33520

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apptut opened this issue Aug 7, 2019 · 2 comments
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cmd/cgo: env CGO_LDFLAGS not working but config #cgo LDFLAGS works #33520

apptut opened this issue Aug 7, 2019 · 2 comments
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FrozenDueToAge WaitingForInfo Issue is not actionable because of missing required information, which needs to be provided.

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@apptut
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apptut commented Aug 7, 2019

Hi, When build go code with some c .so file code in go 1.11+ modules, I config the directives in cgo file like this:

// #cgo LDFLAGS: -L/abc/dir -lfoo

That's build successfull, but when I remove this line and then config env var CGO_LDFLAGS when build, it not working:

CGO_LDFLAGS="-L/abd/dir -lfoo" go build main.go
# or
export CGO_LDFLAGS="-L/abd/dir -lfoo" go build main.go
go build main.go

both above are failed find the c so inner func method, why. Anybody can help me?
@ianlancetaylor
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Please show us your Go environment as requested by the issue template.

Please show us exactly what happens in the case that fails.

Are you running go build main.go in both cases?

@odeke-em odeke-em changed the title build with c with env CGO_LDFLAGS not working but config #cgo LDFLAGS work cmd/cgo: env CGO_LDFLAGS not working but config #cgo LDFLAGS works Aug 10, 2019
@odeke-em odeke-em added the WaitingForInfo Issue is not actionable because of missing required information, which needs to be provided. label Aug 10, 2019
@gopherbot
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Timed out in state WaitingForInfo. Closing.

(I am just a bot, though. Please speak up if this is a mistake or you have the requested information.)

@golang golang locked and limited conversation to collaborators Sep 9, 2020
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@apptut @ianlancetaylor @odeke-em @gopherbot