scripts/kconfig/mconf: work on systems w/o SIGWINCH

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

1 files changed, 11 insertions, 5 deletions

diff --git a/scripts/kconfig/mconf.c b/scripts/kconfig/mconf.c
index 1b0b6ab07..006d03708 100644
--- a/scripts/kconfig/mconf.c
+++ b/scripts/kconfig/mconf.c
@@ -445,6 +445,7 @@ static struct gstr get_relations_str(struct symbol **sym_arr)
 
 pid_t pid;
 
+#ifdef SIGWINCH
 static void winch_handler(int sig)
 {
         if (!do_resize) {
@@ -452,11 +453,11 @@ static void winch_handler(int sig)
                 do_resize = 1;
         }
 }
+#endif
 
 static int exec_conf(void)
 {
         int pipefd[2], stat, size;
-        struct sigaction sa;
         sigset_t sset, osset;
 
         sigemptyset(&sset);
@@ -465,10 +466,15 @@ static int exec_conf(void)
 
         signal(SIGINT, SIG_DFL);
 
-        sa.sa_handler = winch_handler;
-        sigemptyset(&sa.sa_mask);
-        sa.sa_flags = SA_RESTART;
-        sigaction(SIGWINCH, &sa, NULL);
+#ifdef SIGWINCH
+        {
+                struct sigaction sa;
+                sa.sa_handler = winch_handler;
+                sigemptyset(&sa.sa_mask);
+                sa.sa_flags = SA_RESTART;
+                sigaction(SIGWINCH, &sa, NULL);
+        }
+#endif
 
         *argptr++ = NULL;