diff --git a/src/cmd/go/script_test.go b/src/cmd/go/script_test.go
index 284b3548c4..4aa92625dd 100644
--- a/src/cmd/go/script_test.go
+++ b/src/cmd/go/script_test.go
@@ -27,6 +27,7 @@ import (
 	"cmd/go/internal/imports"
 	"cmd/go/internal/par"
 	"cmd/go/internal/txtar"
+	"cmd/go/internal/work"
 )
 
 // TestScript runs the tests in testdata/script/*.txt.
@@ -343,6 +344,7 @@ Script:
 //
 var scriptCmds = map[string]func(*testScript, bool, []string){
 	"addcrlf": (*testScript).cmdAddcrlf,
+	"cc":      (*testScript).cmdCc,
 	"cd":      (*testScript).cmdCd,
 	"chmod":   (*testScript).cmdChmod,
 	"cmp":     (*testScript).cmdCmp,
@@ -378,6 +380,17 @@ func (ts *testScript) cmdAddcrlf(neg bool, args []string) {
 	}
 }
 
+// cc runs the C compiler along with platform specific options.
+func (ts *testScript) cmdCc(neg bool, args []string) {
+	if len(args) < 1 || (len(args) == 1 && args[0] == "&") {
+		ts.fatalf("usage: cc args... [&]")
+	}
+
+	var b work.Builder
+	b.Init()
+	ts.cmdExec(neg, append(b.GccCmd(".", ""), args...))
+}
+
 // cd changes to a different directory.
 func (ts *testScript) cmdCd(neg bool, args []string) {
 	if neg {
diff --git a/src/cmd/go/testdata/script/README b/src/cmd/go/testdata/script/README
index 76d4b36b01..a7b50fff16 100644
--- a/src/cmd/go/testdata/script/README
+++ b/src/cmd/go/testdata/script/README
@@ -84,6 +84,10 @@ when testing.Short() is false.
 
 The commands are:
 
+- [!] cc args... [&]
+  Run the C compiler, the platform specific flags (i.e. `go env GOGCCFLAGS`) will be
+  added automatically before args.
+
 - cd dir
   Change to the given directory for future commands.
 
diff --git a/src/cmd/go/testdata/script/cgo_syso_issue29253.txt b/src/cmd/go/testdata/script/cgo_syso_issue29253.txt
new file mode 100644
index 0000000000..0d18fa91d6
--- /dev/null
+++ b/src/cmd/go/testdata/script/cgo_syso_issue29253.txt
@@ -0,0 +1,28 @@
+# This test tests that we can link in-package syso files that provides symbols
+# for cgo. See issue 29253.
+[!cgo] stop
+[!gc] stop
+cc -c -o pkg/o.syso ext.c
+go build main.go
+
+-- ext.c --
+// +build ignore
+
+int f() { return 42; }
+-- pkg/pkg.go --
+package pkg
+
+// extern int f(void);
+import "C"
+
+func init() {
+	if v := C.f(); v != 42 {
+		panic(v)
+	}
+}
+-- main.go --
+package main
+
+import _ "pkg"
+
+func main() {}
diff --git a/src/cmd/link/internal/ld/lib.go b/src/cmd/link/internal/ld/lib.go
index 755693b27e..253a9f6847 100644
--- a/src/cmd/link/internal/ld/lib.go
+++ b/src/cmd/link/internal/ld/lib.go
@@ -872,8 +872,10 @@ func loadobjfile(ctxt *Link, lib *sym.Library) {
 		// Skip other special (non-object-file) sections that
 		// build tools may have added. Such sections must have
 		// short names so that the suffix is not truncated.
-		if len(arhdr.name) < 16 && !strings.HasSuffix(arhdr.name, ".o") {
-			continue
+		if len(arhdr.name) < 16 {
+			if ext := filepath.Ext(arhdr.name); ext != ".o" && ext != ".syso" {
+				continue
+			}
 		}
 
 		pname := fmt.Sprintf("%s(%s)", lib.File, arhdr.name)