diff --git a/math/reduce/files/patch-libraries_libffi_libffi.map.in b/math/reduce/files/patch-libraries_libffi_libffi.map.in
new file mode 100644
index 000000000000..71403e73caa8
--- /dev/null
+++ b/math/reduce/files/patch-libraries_libffi_libffi.map.in
@@ -0,0 +1,12 @@
+--- libraries/libffi/libffi.map.in.orig	2026-06-13 18:10:04.559180000 +0200
++++ libraries/libffi/libffi.map.in	2026-06-13 18:10:04.570942000 +0200
+@@ -20,7 +20,9 @@
+ 	ffi_type_sint64;
+ 	ffi_type_float;
+ 	ffi_type_double;
++#if HAVE_LONG_DOUBLE
+ 	ffi_type_longdouble;
++#endif
+ 	ffi_type_pointer;
+ 
+ 	/* Exported functions.  */