I have been trying to Build the iOS application I cloned from https://github.com/graphhopper/graphhopper-ios it initially downloaded j2objc and then proceeded to build and encountered an error
make: *** No rule to make target 'graphhopper/core/src/main/java/com/graphhopper/apache/commons/collections/IntDoubleBinaryHeap.java', needed by src/.translate_mark'. Stop.
I am not able to proceed further, can anyone please help me to sort this out?