It is needed for kill() and the SIG* macros.
---
conversion.c | 1 +
ssh.c | 1 +
2 files changed, 2 insertions(+)
diff --git a/conversion.c b/conversion.c
index 7dd201a..3d07c7e 100644
--- a/conversion.c
+++ b/conversion.c
@@ -46,6 +46,7 @@
#include <sys/stat.h>
#include <sys/types.h>
#include <sys/wait.h>
+#include <signal.h>
#include <pthread.h>
diff --git a/ssh.c b/ssh.c
index c852803..fca5883 100644
--- a/ssh.c
+++ b/ssh.c
@@ -52,6 +52,7 @@
#include <libintl.h>
#include <sys/types.h>
#include <sys/wait.h>
+#include <signal.h>
#include "ignore-value.h"
#include "getprogname.h"
--
2.21.0