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cmd/cgo: remove hardcoded '-pie' ldflag for linux/arm

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a minimally invasive fix proposal for #45940. which keeps the fix for #26197.

an alternative for (#26197) could be to fail if we have both flags. adding/removing a flag without an message to the user is inconvenient.

Change-Id: I6ac2524d81ff57202fbe3032a53afd5106270a9e
GitHub-Last-Rev: edaf02fa45
GitHub-Pull-Request: golang/go#45989
Reviewed-on: https://go-review.googlesource.com/c/go/+/317569
Reviewed-by: Cherry Mui <cherryyz@google.com>
Run-TryBot: Cherry Mui <cherryyz@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Trust: Bryan C. Mills <bcmills@google.com>
This commit is contained in:
jochen weber 2021-05-14 12:45:13 +00:00 committed by Cherry Mui
parent a83a558733
commit 119213566a
1 changed files with 15 additions and 9 deletions
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24
src/cmd/go/internal/work/exec.go
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@ -2963,18 +2963,24 @@ func (b *Builder) dynimport(a *Action, p *load.Package, objdir, importGo, cgoExe
linkobj := str.StringList(ofile, outObj, mkAbsFiles(p.Dir, p.SysoFiles))
dynobj := objdir + "_cgo_.o"
// we need to use -pie for Linux/ARM to get accurate imported sym
ldflags := cgoLDFLAGS
if (cfg.Goarch == "arm" && cfg.Goos == "linux") || cfg.Goos == "android" {
// -static -pie doesn't make sense, and causes link errors.
// Issue 26197.
n := make([]string, 0, len(ldflags))
for _, flag := range ldflags {
if flag != "-static" {
n = append(n, flag)
}
if !str.Contains(ldflags, "-no-pie") {
// we need to use -pie for Linux/ARM to get accurate imported sym (added in https://golang.org/cl/5989058)
// this seems to be outdated, but we don't want to break existing builds depending on this (Issue 45940)
ldflags = append(ldflags, "-pie")
}
if str.Contains(ldflags, "-pie") && str.Contains(ldflags, "-static") {
// -static -pie doesn't make sense, and causes link errors.
// Issue 26197.
n := make([]string, 0, len(ldflags)-1)
for _, flag := range ldflags {
if flag != "-static" {
n = append(n, flag)
}
}
ldflags = n
}
ldflags = append(n, "-pie")
}
if err := b.gccld(a, p, objdir, dynobj, ldflags, linkobj); err != nil {
return err