diff -Nru orig/Rdisop/src/Makevars patched/Rdisop/src/Makevars
--- orig/Rdisop/src/Makevars	2023-10-20 20:14:33.000000000 +0200
+++ patched/Rdisop/src/Makevars	2024-03-12 13:37:39.793340300 +0100
@@ -1,4 +1,4 @@
-PKG_CXXFLAGS=-I./imslib/src/
+PKG_CXXFLAGS=-I./imslib/src/ -D_LIBCPP_ENABLE_CXX17_REMOVED_UNARY_BINARY_FUNCTION
 
 .PHONY: all
 all: $(SHLIB)