`MGLMapPointForCoordinate()` was `extern`-defined in a C header, but implemented in an Obj-C++ source file and mangled as a C++ symbol. `FOUNDATION_EXTERN` is C++-aware and will force C-style symbol mangling, which fixes the undefined symbol issue in consumer Obj-C projects.
Mapbox Maps SDK for iOS
A library based on Mapbox GL Native for embedding interactive map views with scalable, customizable vector maps into Cocoa Touch applications on iOS using Objective-C, Swift, or Interface Builder.
This repository is for day-to-day development of the SDK. Building the SDK yourself requires a number of dependencies and steps that are unnecessary for developing production applications. For production applications, please consider installing an official, prebuilt release instead; see the Mapbox iOS SDK website for installation instructions.
