diff -up src/sage/libs/arb/arb_wrap.h.orig src/sage/libs/arb/arb_wrap.h

--- src/sage/libs/arb/arb_wrap.h.orig	2020-10-24 11:37:59.000000000 -0600

+++ src/sage/libs/arb/arb_wrap.h	2020-10-30 16:10:40.145976088 -0600

@@ -11,18 +11,18 @@

 #define ulong mp_limb_t

 #define slong mp_limb_signed_t

-#include <acb.h>

-#include <acb_calc.h>

-#include <acb_elliptic.h>

-#include <acb_hypgeom.h>

-#include <acb_mat.h>

-#include <acb_modular.h>

-#include <acb_poly.h>

-#include <arb.h>

-#include <arb_hypgeom.h>

-#include <arf.h>

-#include <bernoulli.h>

-#include <mag.h>

+#include <arb/acb.h>

+#include <arb/acb_calc.h>

+#include <arb/acb_elliptic.h>

+#include <arb/acb_hypgeom.h>

+#include <arb/acb_mat.h>

+#include <arb/acb_modular.h>

+#include <arb/acb_poly.h>

+#include <arb/arb.h>

+#include <arb/arb_hypgeom.h>

+#include <arb/arf.h>

+#include <arb/bernoulli.h>

+#include <arb/mag.h>

 #undef ulong

 #undef slong