diff --git a/math/csdp/files/patch-lib_user__exit.c b/math/csdp/files/patch-lib_user__exit.c
new file mode 100644
index 000000000000..a14307a121ae
--- /dev/null
+++ b/math/csdp/files/patch-lib_user__exit.c
@@ -0,0 +1,10 @@
+--- lib/user_exit.c.orig	2026-06-21 09:49:29 UTC
++++ lib/user_exit.c
+@@ -13,6 +13,7 @@
+ #include <sys/time.h>
+ #include <sys/resource.h>
+ #include <signal.h>
++#include <stdio.h>
+ 
+ int sigterm_signaled=0;
+