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cmd/go: Go builds C archives with absolute addressing on darwin/arm #12681

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swisspol opened this issue Sep 18, 2015 · 5 comments
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cmd/go: Go builds C archives with absolute addressing on darwin/arm #12681

swisspol opened this issue Sep 18, 2015 · 5 comments
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@swisspol
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Go 1.5.1 on OS X 10.10.5 with Xcode 7

It appears Go builds c archives with absolute addressing, which makes Xcode unhappy when using the resulting static library in a project:

(null): PIE disabled. Absolute addressing (perhaps -mdynamic-no-pic) not allowed in code signed PIE, but used in __cgoexp_45a75e65c81e_Test from build/iphoneos/main.a(go.o). To fix this warning, don't compile with -mdynamic-no-pic or link with -Wl,-no_pie

I made a sample test project here: https://github.com/swisspol/Go-Bridge
@ianlancetaylor ianlancetaylor added this to the Go1.6 milestone Sep 19, 2015
@ianlancetaylor ianlancetaylor changed the title Go builds c archives with absolute addressing on OS X cmd/go: Go builds c archives with absolute addressing on OS X Sep 19, 2015
@albertjin
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I think it is the same issue for iOS built by gomobile.

@rakyll
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rakyll commented Sep 21, 2015

This has been recently fixed via #12590, will be available in Go 1.6.

@rakyll rakyll closed this as completed Sep 21, 2015
@crawshaw
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Hi @swisspol, I'm sorry I missed this issue. It is not the same as #12590. It is however closely related to #12896. I have a fix, but won't have access to the appropriate hardware to test it until tomorrow.

@crawshaw crawshaw reopened this Oct 15, 2015
@rsc
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rsc commented Nov 5, 2015

ping @crawshaw

@rsc rsc changed the title cmd/go: Go builds c archives with absolute addressing on OS X cmd/go: Go builds C archives with absolute addressing on darwin/arm64 Nov 5, 2015
@crawshaw crawshaw changed the title cmd/go: Go builds C archives with absolute addressing on darwin/arm64 cmd/go: Go builds C archives with absolute addressing on darwin/arm Nov 5, 2015
@crawshaw
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crawshaw commented Nov 5, 2015

To consolidate these, I'm marking this a duplicate of #12896.

darwin/arm64 is all PIC.
darwin/arm still has absolute text relocations, and probably will in 1.6

(I haven't managed to convince ld64 to make PC-relative relocations to .bss work.)

@crawshaw crawshaw closed this as completed Nov 5, 2015
@eliasnaur eliasnaur mentioned this issue Mar 12, 2016
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