diff -u -r ../strace-4.23/linux/linux/signal.h ./linux/linux/signal.h
--- ../strace-4.23/linux/linux/signal.h	2018-06-13 18:18:38.000000000 +0200
+++ ./linux/linux/signal.h	2018-07-09 23:12:56.526822310 +0200
@@ -1,5 +1,13 @@
+#include <sys/cdefs.h>
+#if defined(__BIONIC__)
+/*
+ * Bionic's <linux/signal.h> is the UAPI one, and <signal.h> requires it.
+ */
+#include_next <linux/signal.h>
+#else
 /*
  * Workaround the infamous incompatibility between <linux/signal.h>
  * and many libc headers by overriding <linux/signal.h> with <signal.h>.
  */
 #include <signal.h>
+#endif