diff --git a/tdb/spinlock.c b/tdb/spinlock.c
index 9bf42adfcf..50cd952c72 100644
--- a/tdb/spinlock.c
+++ b/tdb/spinlock.c
@@ -28,6 +28,7 @@
 #endif
 
 #ifdef STANDALONE
+#define _KLIBC_HAS_ARCH_SIG_ATOMIC_T
 #include <stdlib.h>
 #include <stdio.h>
 #include <unistd.h>
diff --git a/tdb/tdb.c b/tdb/tdb.c
index 772602ed5b..9ae57a974e 100644
--- a/tdb/tdb.c
+++ b/tdb/tdb.c
@@ -52,6 +52,7 @@
 #include <config.h>
 #endif
 
+#define _KLIBC_HAS_ARCH_SIG_ATOMIC_T
 #include <stdlib.h>
 #include <stdio.h>
 #include <fcntl.h>
diff --git a/tdb/tdb.h b/tdb/tdb.h
index 839d5b1516..cac172adce 100644
--- a/tdb/tdb.h
+++ b/tdb/tdb.h
@@ -25,6 +25,7 @@
 extern "C" {
 #endif
 
+#define _KLIBC_HAS_ARCH_SIG_ATOMIC_T
 #include <signal.h>
 
 /* flags to tdb_store() */
diff --git a/udevdb.c b/udevdb.c
index e0bd39e84b..5be3c25151 100644
--- a/udevdb.c
+++ b/udevdb.c
@@ -24,6 +24,7 @@
 /*
  * udev database library
  */
+#define _KLIBC_HAS_ARCH_SIG_ATOMIC_T
 #include <stdlib.h>
 #include <stdio.h>
 #include <fcntl.h>