[release-branch.go1.19] cmd/cgo: correct _cgo_flags output

For #60306
For #60513

Change-Id: I8b37d74433456f3270c2ea465ecf406da6e5a578
Reviewed-on: https://go-review.googlesource.com/c/go/+/501297
Run-TryBot: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Dmitri Shuralyov <dmitshur@golang.org>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Reviewed-by: David Chase <drchase@google.com>
TryBot-Bypass: Dmitri Shuralyov <dmitshur@golang.org>

diff --git a/src/cmd/cgo/out.go b/src/cmd/cgo/out.go
index 97d92db9cd8d28e331f77ed0d8624529b691070c..6eb302b62b577d0e834aee5d95febb02d72d4bf0 100644 (file)
--- a/src/cmd/cgo/out.go
+++ b/src/cmd/cgo/out.go
@@ -48,7 +48,7 @@ func (p *Package) writeDefs() {
        fflg := creat(*objDir + "_cgo_flags")
        for k, v := range p.CgoFlags {
                for _, arg := range v {
-                       fmt.Fprintf(fflg, "_CGO_%s=%s\n", arg)
+                       fmt.Fprintf(fflg, "_CGO_%s=%s\n", k, arg)
                }
                if k == "LDFLAGS" && !*gccgo {
                        for _, arg := range v {