cmd/go: move cfg.ExternalLinkingForced to internal/load

It needs to refer to packages, so it can no longer be in cfg.
No semantic changes here.

Can now be unexported, so that was a net win anyway.

Change-Id: I58bf6cdcd435e6e019291bb8dcd5d5b7f1ac03a3
Reviewed-on: https://go-review.googlesource.com/76550
Run-TryBot: Russ Cox <rsc@golang.org>
Reviewed-by: David Crawshaw <crawshaw@golang.org>

1 files changed, 0 insertions, 37 deletions

diff --git a/src/cmd/go/internal/cfg/cfg.go b/src/cmd/go/internal/cfg/cfg.go
index 5f93f39f90..ab20c20e2f 100644
--- a/src/cmd/go/internal/cfg/cfg.go
+++ b/src/cmd/go/internal/cfg/cfg.go
@@ -151,40 +151,3 @@ func isGOROOT(path string) bool {
 	}
 	return stat.IsDir()
 }
-
-// ExternalLinkingForced reports whether external linking is being
-// forced even for programs that do not use cgo.
-func ExternalLinkingForced() bool {
-	// Some targets must use external linking even inside GOROOT.
-	switch BuildContext.GOOS {
-	case "android":
-		return true
-	case "darwin":
-		switch BuildContext.GOARCH {
-		case "arm", "arm64":
-			return true
-		}
-	}
-
-	if !BuildContext.CgoEnabled {
-		return false
-	}
-	// Currently build modes c-shared, pie (on systems that do not
-	// support PIE with internal linking mode (currently all
-	// systems: issue #18968)), plugin, and -linkshared force
-	// external linking mode, as of course does
-	// -ldflags=-linkmode=external. External linking mode forces
-	// an import of runtime/cgo.
-	pieCgo := BuildBuildmode == "pie"
-	linkmodeExternal := false
-	for i, a := range BuildLdflags {
-		if a == "-linkmode=external" {
-			linkmodeExternal = true
-		}
-		if a == "-linkmode" && i+1 < len(BuildLdflags) && BuildLdflags[i+1] == "external" {
-			linkmodeExternal = true
-		}
-	}
-
-	return BuildBuildmode == "c-shared" || BuildBuildmode == "plugin" || pieCgo || BuildLinkshared || linkmodeExternal
-}