cmd/go: change ar argument to rc

Put 'r' first because that is the command, and 'c' is the modifier.
Keep 'c' because it means to not warn when creating an archive.
Drop 'u' because it is unnecessary and fails on Arch Linux.

No test because this is only for gccgo (I tested it manually).

Fixes #12310.

Change-Id: Id740257fb1c347dfaa60f7d613af2897dae2c059
Reviewed-on: https://go-review.googlesource.com/16664
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: David Crawshaw <crawshaw@golang.org>

diff --git a/src/cmd/go/build.go b/src/cmd/go/build.go
index 54d1b8f35bc48e3fc58da42d2e01330534395bea..e869b27927e9532d83ebafd9c41afedb1c1273df 100644 (file)
--- a/src/cmd/go/build.go
+++ b/src/cmd/go/build.go
@@ -2506,7 +2506,7 @@ func (gccgoToolchain) pack(b *builder, p *Package, objDir, afile string, ofiles
        for _, f := range ofiles {
                absOfiles = append(absOfiles, mkAbs(objDir, f))
        }
-       return b.run(p.Dir, p.ImportPath, nil, "ar", "cru", mkAbs(objDir, afile), absOfiles)
+       return b.run(p.Dir, p.ImportPath, nil, "ar", "rc", mkAbs(objDir, afile), absOfiles)
 }
 
 func (tools gccgoToolchain) ld(b *builder, root *action, out string, allactions []*action, mainpkg string, ofiles []string) error {