--- a/core-tools/src/dgsh-w.c
+++ b/core-tools/src/dgsh-w.c
@@ -10,6 +10,8 @@
#include "dgsh.h"
#include "dgsh-debug.h"
+#include "s_cpow.c"
+
void
read_number(int fd, long double *x, long double complex *xc)
{