Need <unistd.h> if using gethostname().

diff --git a/lib/gvc/gvhostname.c b/lib/gvc/gvhostname.c
index 75eb2ac3d7c8750612439fdfea5fe224c74b0eef..ab65c8ebbef3e54e218dcf71d7a078c4287ce005 100644 (file)
--- a/lib/gvc/gvhostname.c
+++ b/lib/gvc/gvhostname.c
@@ -27,6 +27,9 @@
 #ifdef HAVE_UNAME
 #include <sys/utsname.h>
 #endif
+#ifdef HAVE_UNISTD_H
+#include <unistd.h>
+#endif
 
 /*
  * There is no portable macro for the maximum length