Origin: Void-Linux

--- a/backends/ppc_initreg.c
+++ b/backends/ppc_initreg.c
@@ -32,6 +32,7 @@
 
 #include <stdlib.h>
 #if defined(__powerpc__) && defined(__linux__)
+# include <asm/ptrace.h>
 # include <sys/ptrace.h>
 # include <sys/user.h>
 #endif