1 files changed, 3 insertions, 0 deletions
diff --git a/gdb/fork-child.c b/gdb/fork-child.c
index 26b74cf..2b2daeb 100644
--- a/gdb/fork-child.c
+++ b/gdb/fork-child.c
@@ -29,6 +29,9 @@ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.  */
 #include "thread.h"
 
 #include <signal.h>
+#ifdef HAVE_UNISTD_H
+#include <unistd.h>
+#endif
 
 extern char **environ;