runtime/cgo: fix build on freebsd/arm

This CL is in preparation to make cgo work on freebsd/arm.

LGTM=iant
R=iant
CC=golang-codereviews
https://golang.org/cl/60500044

diff --git a/src/pkg/runtime/cgo/gcc_freebsd_arm.c b/src/pkg/runtime/cgo/gcc_freebsd_arm.c
index 936f4a973a9694f149b0f7c8aaad1dbc884fc5d8..6175e1d9cc9f62955d6cc22a135ea0113f58e16b 100644 (file)
--- a/src/pkg/runtime/cgo/gcc_freebsd_arm.c
+++ b/src/pkg/runtime/cgo/gcc_freebsd_arm.c
@@ -4,6 +4,7 @@
 
 #include <sys/types.h>
 #include <machine/sysarch.h>
+#include <sys/signalvar.h>
 #include <pthread.h>
 #include <signal.h>
 #include <string.h>