[build] add -fvisibility=hidden to macOS dynamic framework and export required symbols

platform/darwin/src/MGLAccountManager.h

@@ -1,11 +1,14 @@
 #import <Foundation/Foundation.h>
 
+#import "MGLFoundation.h"
+
 NS_ASSUME_NONNULL_BEGIN
 
 /**
  The MGLAccountManager object provides a global way to set a Mapbox API access
  token.
  */
+MGL_EXPORT
 @interface MGLAccountManager : NSObject
 
 #pragma mark Authorizing Access

platform/darwin/src/MGLAttributionInfo.h

@@ -2,6 +2,7 @@
 #import <CoreGraphics/CoreGraphics.h>
 #import <CoreLocation/CoreLocation.h>
 
+#import "MGLFoundation.h"
 #import "MGLTypes.h"
 
 NS_ASSUME_NONNULL_BEGIN
@@ -10,6 +11,7 @@ NS_ASSUME_NONNULL_BEGIN
  Information about an attribution statement, usually a copyright or trademark
  statement, associated with a map content source.
  */
+MGL_EXPORT
 @interface MGLAttributionInfo : NSObject
 
 /**

platform/darwin/src/MGLBackgroundStyleLayer.h

@@ -1,6 +1,7 @@
 // This file is generated. 
 // Edit platform/darwin/scripts/generate-style-code.js, then run `make style-code-darwin`.
 
+#import "MGLFoundation.h"
 #import "MGLStyleValue.h"
 #import "MGLStyleLayer.h"
 
@@ -12,6 +13,7 @@ NS_ASSUME_NONNULL_BEGIN
  `style` and obtain the background layer using the `-[MGLStyle layerWithIdentifier:]` 
  method and passing `background` for the identifier. 
  */
+MGL_EXPORT
 @interface MGLBackgroundStyleLayer : MGLStyleLayer
 
 - (instancetype)initWithIdentifier:(NSString *)identifier NS_DESIGNATED_INITIALIZER;

platform/darwin/src/MGLCircleStyleLayer.h

@@ -1,6 +1,7 @@
 // This file is generated. 
 // Edit platform/darwin/scripts/generate-style-code.js, then run `make style-code-darwin`.
 
+#import "MGLFoundation.h"
 #import "MGLStyleValue.h"
 #import "MGLVectorStyleLayer.h"
 
@@ -44,6 +45,7 @@ typedef NS_ENUM(NSUInteger, MGLCircleTranslateAnchor) {
  `MGLMapView` for its `style` and obtain existing layers using the 
  `-[MGLStyle layerWithIdentifier:]` method. 
  */
+MGL_EXPORT
 @interface MGLCircleStyleLayer : MGLVectorStyleLayer
 
 #pragma mark - Accessing the Paint Attributes

platform/darwin/src/MGLClockDirectionFormatter.h

@@ -1,6 +1,8 @@
 #import <Foundation/Foundation.h>
 #import <CoreLocation/CoreLocation.h>
 
+#import "MGLFoundation.h"
+
 NS_ASSUME_NONNULL_BEGIN
 
 /**
@@ -14,6 +16,7 @@ NS_ASSUME_NONNULL_BEGIN
  irrespective of the user’s orientation, use `MGLCompassDirectionFormatter`
  instead.
  */
+MGL_EXPORT
 @interface MGLClockDirectionFormatter : NSFormatter
 
 /**

platform/darwin/src/MGLCompassDirectionFormatter.h

@@ -1,6 +1,8 @@
 #import <Foundation/Foundation.h>
 #import <CoreLocation/CoreLocation.h>
 
+#import "MGLFoundation.h"
+
 NS_ASSUME_NONNULL_BEGIN
 
 /**
@@ -12,6 +14,7 @@ NS_ASSUME_NONNULL_BEGIN
  irrespective of the user’s current location. To format a direction relative to
  the user’s current location, use `MGLClockDirectionFormatter` instead.
  */
+MGL_EXPORT
 @interface MGLCompassDirectionFormatter : NSFormatter
 
 /**

platform/darwin/src/MGLCoordinateFormatter.h

@@ -1,6 +1,8 @@
 #import <Foundation/Foundation.h>
 #import <CoreLocation/CoreLocation.h>
 
+#import "MGLFoundation.h"
+
 NS_ASSUME_NONNULL_BEGIN
 
 /**
@@ -8,6 +10,7 @@ NS_ASSUME_NONNULL_BEGIN
  geographic coordinate pairs. Use this class to create localized coordinate
  strings when displaying location information to users.
  */
+MGL_EXPORT
 @interface MGLCoordinateFormatter : NSFormatter
 
 /**

platform/darwin/src/MGLFeature.h

@@ -1,5 +1,6 @@
 #import <Foundation/Foundation.h>
 
+#import "MGLFoundation.h"
 #import "MGLPolyline.h"
 #import "MGLPolygon.h"
 #import "MGLPointAnnotation.h"
@@ -117,6 +118,7 @@ NS_ASSUME_NONNULL_BEGIN
  The `MGLPointFeature` class represents a point in a
  <a href="https://www.mapbox.com/mapbox-gl-style-spec/#sources">tile source</a>.
  */
+MGL_EXPORT
 @interface MGLPointFeature : MGLPointAnnotation <MGLFeature>
 @end
 
@@ -124,6 +126,7 @@ NS_ASSUME_NONNULL_BEGIN
  The `MGLPolylineFeature` class represents a polyline in a
  <a href="https://www.mapbox.com/mapbox-gl-style-spec/#sources">tile source</a>.
  */
+MGL_EXPORT
 @interface MGLPolylineFeature : MGLPolyline <MGLFeature>
 @end
 
@@ -131,6 +134,7 @@ NS_ASSUME_NONNULL_BEGIN
  The `MGLPolygonFeature` class represents a polygon in a
  <a href="https://www.mapbox.com/mapbox-gl-style-spec/#sources">tile source</a>.
  */
+MGL_EXPORT
 @interface MGLPolygonFeature : MGLPolygon <MGLFeature>
 @end
 
@@ -138,6 +142,7 @@ NS_ASSUME_NONNULL_BEGIN
  The `MGLPointCollectionFeature` class represents a multipoint in a
  <a href="https://www.mapbox.com/mapbox-gl-style-spec/#sources">tile source</a>.
  */
+MGL_EXPORT
 @interface MGLPointCollectionFeature : MGLPointCollection <MGLFeature>
 @end
 
@@ -145,6 +150,7 @@ NS_ASSUME_NONNULL_BEGIN
  The `MGLMultiPolylineFeature` class represents a multipolyline in a
  <a href="https://www.mapbox.com/mapbox-gl-style-spec/#sources">tile source</a>.
  */
+MGL_EXPORT
 @interface MGLMultiPolylineFeature : MGLMultiPolyline <MGLFeature>
 @end
 
@@ -152,6 +158,7 @@ NS_ASSUME_NONNULL_BEGIN
  The `MGLMultiPolygonFeature` class represents a multipolygon in a
  <a href="https://www.mapbox.com/mapbox-gl-style-spec/#sources">tile source</a>.
  */
+MGL_EXPORT
 @interface MGLMultiPolygonFeature : MGLMultiPolygon <MGLFeature>
 @end
 
@@ -159,6 +166,7 @@ NS_ASSUME_NONNULL_BEGIN
  The `MGLShapeCollectionFeature` class represents a shape collection in a
  <a href="https://www.mapbox.com/mapbox-gl-style-spec/#sources">tile source</a>.
  */
+MGL_EXPORT
 @interface MGLShapeCollectionFeature : MGLShapeCollection <MGLFeature>
 
 @property (nonatomic, copy, readonly) NS_ARRAY_OF(MGLShape<MGLFeature> *) *shapes;

platform/darwin/src/MGLFeature_Private.h

@@ -1,3 +1,4 @@
+#import "MGLFoundation.h"
 #import "MGLFeature.h"
 #import "MGLShape.h"
 
@@ -11,6 +12,7 @@ NS_ASSUME_NONNULL_BEGIN
  Returns an array of `MGLFeature` objects converted from the given vector of
  vector tile features.
  */
+MGL_EXPORT
 NS_ARRAY_OF(MGLShape <MGLFeature> *) *MGLFeaturesFromMBGLFeatures(const std::vector<mbgl::Feature> &features);
 
 /**

platform/darwin/src/MGLFillStyleLayer.h

@@ -1,6 +1,7 @@
 // This file is generated. 
 // Edit platform/darwin/scripts/generate-style-code.js, then run `make style-code-darwin`.
 
+#import "MGLFoundation.h"
 #import "MGLStyleValue.h"
 #import "MGLVectorStyleLayer.h"
 
@@ -28,6 +29,7 @@ typedef NS_ENUM(NSUInteger, MGLFillTranslateAnchor) {
  `MGLMapView` for its `style` and obtain existing layers using the 
  `-[MGLStyle layerWithIdentifier:]` method. 
  */
+MGL_EXPORT
 @interface MGLFillStyleLayer : MGLVectorStyleLayer
 
 #pragma mark - Accessing the Paint Attributes

platform/darwin/src/MGLForegroundStyleLayer.h

@@ -1,5 +1,6 @@
 #import <Foundation/Foundation.h>
 
+#import "MGLFoundation.h"
 #import "MGLStyleLayer.h"
 
 NS_ASSUME_NONNULL_BEGIN
@@ -14,6 +15,7 @@ NS_ASSUME_NONNULL_BEGIN
  subclasses of this class. Instead, create instances of `MGLRasterStyleLayer`
  and the concrete subclasses of `MGLVectorStyleLayer`.
  */
+MGL_EXPORT
 @interface MGLForegroundStyleLayer : MGLStyleLayer
 
 #pragma mark Initializing a Style Layer

platform/darwin/src/MGLFoundation.h

@@ -0,0 +1,5 @@
+#pragma once
+
+#import <Foundation/Foundation.h>
+
+#define MGL_EXPORT __attribute__((visibility ("default")))

platform/darwin/src/MGLGeometry.h

@@ -2,6 +2,8 @@
 #import <CoreLocation/CoreLocation.h>
 #import <CoreGraphics/CGBase.h>
 
+#import "MGLFoundation.h"
+
 NS_ASSUME_NONNULL_BEGIN
 
 /** Defines the area spanned by an `MGLCoordinateBounds`. */
@@ -33,7 +35,7 @@ NS_INLINE BOOL MGLCoordinateSpanEqualToCoordinateSpan(MGLCoordinateSpan span1, M
 }
 
 /** An area of zero width and zero height. */
-extern const MGLCoordinateSpan MGLCoordinateSpanZero;
+extern MGL_EXPORT const MGLCoordinateSpan MGLCoordinateSpanZero;
 
 /** A rectangular area as measured on a two-dimensional map projection. */
 typedef struct MGLCoordinateBounds {

platform/darwin/src/MGLGeometry.mm

@@ -1,5 +1,7 @@
 #import "MGLGeometry_Private.h"
 
+#import "MGLFoundation.h"
+
 #import <mbgl/util/projection.hpp>
 
 /** Vertical field of view, measured in degrees, for determining the altitude
@@ -30,6 +32,7 @@ CGRect MGLExtendRect(CGRect rect, CGPoint point) {
     return rect;
 }
 
+MGL_EXPORT
 CLLocationDistance MGLAltitudeForZoomLevel(double zoomLevel, CGFloat pitch, CLLocationDegrees latitude, CGSize size) {
     CLLocationDistance metersPerPixel = mbgl::Projection::getMetersPerPixelAtLatitude(latitude, zoomLevel);
     CLLocationDistance metersTall = metersPerPixel * size.height;
@@ -37,6 +40,7 @@ CLLocationDistance MGLAltitudeForZoomLevel(double zoomLevel, CGFloat pitch, CLLo
     return altitude * std::sin(M_PI_2 - MGLRadiansFromDegrees(pitch)) / std::sin(M_PI_2);
 }
 
+MGL_EXPORT
 double MGLZoomLevelForAltitude(CLLocationDistance altitude, CGFloat pitch, CLLocationDegrees latitude, CGSize size) {
     CLLocationDistance eyeAltitude = altitude / std::sin(M_PI_2 - MGLRadiansFromDegrees(pitch)) * std::sin(M_PI_2);
     CLLocationDistance metersTall = eyeAltitude * 2 * std::tan(MGLRadiansFromDegrees(MGLAngularFieldOfView) / 2.);

platform/darwin/src/MGLLineStyleLayer.h

@@ -1,6 +1,7 @@
 // This file is generated. 
 // Edit platform/darwin/scripts/generate-style-code.js, then run `make style-code-darwin`.
 
+#import "MGLFoundation.h"
 #import "MGLStyleValue.h"
 #import "MGLVectorStyleLayer.h"
 
@@ -68,6 +69,7 @@ typedef NS_ENUM(NSUInteger, MGLLineTranslateAnchor) {
  `MGLMapView` for its `style` and obtain existing layers using the 
  `-[MGLStyle layerWithIdentifier:]` method. 
  */
+MGL_EXPORT
 @interface MGLLineStyleLayer : MGLVectorStyleLayer
 
 #pragma mark - Accessing the Layout Attributes

platform/darwin/src/MGLMapCamera.h

@@ -2,12 +2,15 @@
 #import <CoreGraphics/CoreGraphics.h>
 #import <CoreLocation/CoreLocation.h>
 
+#import "MGLFoundation.h"
+
 NS_ASSUME_NONNULL_BEGIN
 
 /**
  An `MGLMapCamera` object represents a viewpoint from which the user observes
  some point on an `MGLMapView`.
  */
+MGL_EXPORT
 @interface MGLMapCamera : NSObject <NSSecureCoding, NSCopying>
 
 /** Coordinate at the center of the map view. */

platform/darwin/src/MGLMultiPoint.h

@@ -1,6 +1,7 @@
 #import <Foundation/Foundation.h>
 #import <CoreLocation/CoreLocation.h>
 
+#import "MGLFoundation.h"
 #import "MGLShape.h"
 
 NS_ASSUME_NONNULL_BEGIN
@@ -12,6 +13,7 @@ NS_ASSUME_NONNULL_BEGIN
  `MGLPolygon` classes. However, you can use the method and properties of this
  class to access information about the vertices of the line or polygon.
  */
+MGL_EXPORT
 @interface MGLMultiPoint : MGLShape
 
 /**

platform/darwin/src/MGLOfflinePack.h

@@ -1,5 +1,6 @@
 #import <Foundation/Foundation.h>
 
+#import "MGLFoundation.h"
 #import "MGLOfflineRegion.h"
 
 NS_ASSUME_NONNULL_BEGIN
@@ -100,6 +101,7 @@ typedef struct MGLOfflinePackProgress {
  `+[MGLOfflineStorage addPackForRegion:withContext:completionHandler:]` method.
  A pack created using `-[MGLOfflinePack init]` is immediately invalid.
  */
+MGL_EXPORT
 @interface MGLOfflinePack : NSObject
 
 /**

platform/darwin/src/MGLOfflineStorage.h

@@ -1,5 +1,6 @@
 #import <Foundation/Foundation.h>
 
+#import "MGLFoundation.h"
 #import "MGLTypes.h"
 
 NS_ASSUME_NONNULL_BEGIN
@@ -24,7 +25,7 @@ NS_ASSUME_NONNULL_BEGIN
  alternatively observe KVO change notifications to the pack’s `progress` key
  path.
  */
-extern const NSNotificationName MGLOfflinePackProgressChangedNotification;
+extern MGL_EXPORT const NSNotificationName MGLOfflinePackProgressChangedNotification;
 
 /**
  Posted by the shared `MGLOfflineStorage` object whenever an `MGLOfflinePack`
@@ -37,7 +38,7 @@ extern const NSNotificationName MGLOfflinePackProgressChangedNotification;
  `userInfo` dictionary contains the error object in the
  `MGLOfflinePackErrorUserInfoKey` key.
  */
-extern const NSNotificationName MGLOfflinePackErrorNotification;
+extern MGL_EXPORT const NSNotificationName MGLOfflinePackErrorNotification;
 
 /**
  Posted by the shared `MGLOfflineStorage` object when the maximum number of
@@ -52,7 +53,7 @@ extern const NSNotificationName MGLOfflinePackErrorNotification;
  calling the `-[MGLOfflineStorage removePack:withCompletionHandler:]` method.
  Contact your Mapbox sales representative to have the limit raised.
  */
-extern const NSNotificationName MGLOfflinePackMaximumMapboxTilesReachedNotification;
+extern MGL_EXPORT const NSNotificationName MGLOfflinePackMaximumMapboxTilesReachedNotification;
 
 /**
  A key in the `userInfo` property of a notification posted by `MGLOfflinePack`.
@@ -65,9 +66,9 @@ typedef NSString *MGLOfflinePackUserInfoKey NS_EXTENSIBLE_STRING_ENUM;
  `MGLOfflinePackProgressChangedNotification` notification. Call `-integerValue`
  on the object to receive the `MGLOfflinePackState`-typed state.
  */
-extern const MGLOfflinePackUserInfoKey MGLOfflinePackUserInfoKeyState;
+extern MGL_EXPORT const MGLOfflinePackUserInfoKey MGLOfflinePackUserInfoKeyState;
 
-extern NSString * const MGLOfflinePackStateUserInfoKey __attribute__((deprecated("Use MGLOfflinePackUserInfoKeyState")));
+extern MGL_EXPORT NSString * const MGLOfflinePackStateUserInfoKey __attribute__((deprecated("Use MGLOfflinePackUserInfoKeyState")));
 
 /**
  The key for an `NSValue` object that indicates an offline pack’s current
@@ -76,9 +77,9 @@ extern NSString * const MGLOfflinePackStateUserInfoKey __attribute__((deprecated
  `-MGLOfflinePackProgressValue` on the object to receive the
  `MGLOfflinePackProgress`-typed progress.
  */
-extern const MGLOfflinePackUserInfoKey MGLOfflinePackUserInfoKeyProgress;
+extern MGL_EXPORT const MGLOfflinePackUserInfoKey MGLOfflinePackUserInfoKeyProgress;
 
-extern NSString * const MGLOfflinePackProgressUserInfoKey __attribute__((deprecated("Use MGLOfflinePackUserInfoKeyProgress")));
+extern MGL_EXPORT NSString * const MGLOfflinePackProgressUserInfoKey __attribute__((deprecated("Use MGLOfflinePackUserInfoKeyProgress")));
 
 /**
  The key for an `NSError` object that is encountered in the course of
@@ -86,9 +87,9 @@ extern NSString * const MGLOfflinePackProgressUserInfoKey __attribute__((depreca
  an `MGLOfflinePackErrorNotification` notification. The error’s domain is
  `MGLErrorDomain`. See `MGLErrorCode` for possible error codes.
  */
-extern const MGLOfflinePackUserInfoKey MGLOfflinePackUserInfoKeyError;
+extern MGL_EXPORT const MGLOfflinePackUserInfoKey MGLOfflinePackUserInfoKeyError;
 
-extern NSString * const MGLOfflinePackErrorUserInfoKey __attribute__((deprecated("Use MGLOfflinePackUserInfoKeyError")));
+extern MGL_EXPORT NSString * const MGLOfflinePackErrorUserInfoKey __attribute__((deprecated("Use MGLOfflinePackUserInfoKeyError")));
 
 /**
  The key for an `NSNumber` object that indicates the maximum number of
@@ -98,9 +99,9 @@ extern NSString * const MGLOfflinePackErrorUserInfoKey __attribute__((deprecated
  `-unsignedLongLongValue` on the object to receive the `uint64_t`-typed tile
  limit.
  */
-extern const MGLOfflinePackUserInfoKey MGLOfflinePackUserInfoKeyMaximumCount;
+extern MGL_EXPORT const MGLOfflinePackUserInfoKey MGLOfflinePackUserInfoKeyMaximumCount;
 
-extern NSString * const MGLOfflinePackMaximumCountUserInfoKey __attribute__((deprecated("Use MGLOfflinePackUserInfoKeyMaximumCount")));
+extern MGL_EXPORT NSString * const MGLOfflinePackMaximumCountUserInfoKey __attribute__((deprecated("Use MGLOfflinePackUserInfoKeyMaximumCount")));
 
 /**
  A block to be called once an offline pack has been completely created and
@@ -135,6 +136,7 @@ typedef void (^MGLOfflinePackRemovalCompletionHandler)(NSError * _Nullable error
  fact that offline resources are stored in a database. The shared object
  maintains a canonical collection of offline packs in its `packs` property.
  */
+MGL_EXPORT
 @interface MGLOfflineStorage : NSObject
 
 /**

platform/darwin/src/MGLOpenGLStyleLayer.h

@@ -1,6 +1,7 @@
 #import <Foundation/Foundation.h>
 #import <CoreLocation/CoreLocation.h>
 
+#import "MGLFoundation.h"
 #import "MGLStyleValue.h"
 #import "MGLStyleLayer.h"
 
@@ -17,6 +18,7 @@ typedef struct MGLStyleLayerDrawingContext {
     CGFloat fieldOfView;
 } MGLStyleLayerDrawingContext;
 
+MGL_EXPORT
 @interface MGLOpenGLStyleLayer : MGLStyleLayer
 
 @property (nonatomic, weak, readonly) MGLMapView *mapView;

platform/darwin/src/MGLPointAnnotation.h

@@ -1,6 +1,7 @@
 #import <Foundation/Foundation.h>
 #import <CoreLocation/CoreLocation.h>
 
+#import "MGLFoundation.h"
 #import "MGLShape.h"
 
 NS_ASSUME_NONNULL_BEGIN
@@ -11,6 +12,7 @@ NS_ASSUME_NONNULL_BEGIN
  situations where all you want to do is associate a point on the map with a
  title.
  */
+MGL_EXPORT
 @interface MGLPointAnnotation : MGLShape
 
 /**

platform/darwin/src/MGLPointCollection.h

@@ -1,6 +1,7 @@
 #import <Foundation/Foundation.h>
 #import <CoreLocation/CoreLocation.h>
 
+#import "MGLFoundation.h"
 #import "MGLOverlay.h"
 #import "MGLShape.h"
 
@@ -15,6 +16,7 @@
  to the map view's style, the point collection represents as a group of distinct 
  annotations.
  */
+MGL_EXPORT
 @interface MGLPointCollection : MGLShape <MGLOverlay>
 
 /**

platform/darwin/src/MGLPolygon.h

@@ -1,6 +1,7 @@
 #import <Foundation/Foundation.h>
 #import <CoreLocation/CoreLocation.h>
 
+#import "MGLFoundation.h"
 #import "MGLMultiPoint.h"
 #import "MGLOverlay.h"
 
@@ -14,6 +15,7 @@ NS_ASSUME_NONNULL_BEGIN
  are provided. The first and last points are connected to each other to create
  the closed shape.
  */
+MGL_EXPORT
 @interface MGLPolygon : MGLMultiPoint <MGLOverlay>
 
 /**
@@ -64,6 +66,7 @@ NS_ASSUME_NONNULL_BEGIN
  @note `MGLMultiPolygon` objects cannot be added to a map view using
     `-[MGLMapView addAnnotations:]` and related methods.
  */
+MGL_EXPORT
 @interface MGLMultiPolygon : MGLShape <MGLOverlay>
 
 /**

platform/darwin/src/MGLPolyline.h

@@ -1,6 +1,7 @@
 #import <Foundation/Foundation.h>
 #import <CoreLocation/CoreLocation.h>
 
+#import "MGLFoundation.h"
 #import "MGLMultiPoint.h"
 #import "MGLOverlay.h"
 
@@ -14,6 +15,7 @@ NS_ASSUME_NONNULL_BEGIN
  the order they are provided. The first and last points are not connected to
  each other.
  */
+MGL_EXPORT
 @interface MGLPolyline : MGLMultiPoint <MGLOverlay>
 
 /**
@@ -39,6 +41,7 @@ NS_ASSUME_NONNULL_BEGIN
  @note `MGLMultiPolyline` objects cannot be added to a map view using
     `-[MGLMapView addAnnotations:]` and related methods.
  */
+MGL_EXPORT
 @interface MGLMultiPolyline : MGLShape <MGLOverlay>
 
 /**

platform/darwin/src/MGLRasterSource.h

@@ -1,7 +1,8 @@
-#import "MGLTileSource.h"
-
 #import <CoreGraphics/CoreGraphics.h>
 
+#import "MGLFoundation.h"
+#import "MGLTileSource.h"
+
 NS_ASSUME_NONNULL_BEGIN
 
 /**
@@ -18,7 +19,7 @@ NS_ASSUME_NONNULL_BEGIN
  This option is only applicable to `MGLRasterSource` objects; it is ignored when
  initializing `MGLVectorSource` objects.
  */
-extern const MGLTileSourceOption MGLTileSourceOptionTileSize;
+extern MGL_EXPORT const MGLTileSourceOption MGLTileSourceOptionTileSize;
 
 /**
  `MGLRasterSource` is a map content source that supplies raster image tiles to
@@ -36,6 +37,7 @@ extern const MGLTileSourceOption MGLTileSourceOptionTileSize;
  can also add and remove sources dynamically using methods such as
  `-[MGLStyle addSource:]` and `-[MGLStyle sourceWithIdentifier:]`.
  */
+MGL_EXPORT
 @interface MGLRasterSource : MGLTileSource
 
 #pragma mark Initializing a Source

platform/darwin/src/MGLRasterStyleLayer.h

@@ -1,6 +1,7 @@
 // This file is generated. 
 // Edit platform/darwin/scripts/generate-style-code.js, then run `make style-code-darwin`.
 
+#import "MGLFoundation.h"
 #import "MGLStyleValue.h"
 #import "MGLForegroundStyleLayer.h"
 
@@ -12,6 +13,7 @@ NS_ASSUME_NONNULL_BEGIN
  `MGLMapView` for its `style` and obtain existing layers using the 
  `-[MGLStyle layerWithIdentifier:]` method. 
  */
+MGL_EXPORT
 @interface MGLRasterStyleLayer : MGLForegroundStyleLayer
 
 #pragma mark - Accessing the Paint Attributes

platform/darwin/src/MGLShape.h

@@ -1,5 +1,6 @@
 #import <Foundation/Foundation.h>
 
+#import "MGLFoundation.h"
 #import "MGLAnnotation.h"
 
 NS_ASSUME_NONNULL_BEGIN
@@ -11,6 +12,7 @@ NS_ASSUME_NONNULL_BEGIN
  and providing an appropriate value for the coordinate property inherited from
  the `MGLAnnotation` protocol.
  */
+MGL_EXPORT
 @interface MGLShape : NSObject <MGLAnnotation>
 
 #pragma mark Creating a Shape

platform/darwin/src/MGLShapeCollection.h

@@ -1,5 +1,6 @@
 #import <Foundation/Foundation.h>
 
+#import "MGLFoundation.h"
 #import "MGLShape.h"
 
 #import "MGLTypes.h"
@@ -14,6 +15,7 @@ NS_ASSUME_NONNULL_BEGIN
  @note `MGLShapeCollection` objects cannot be added to a map view using
     `-[MGLMapView addAnnotations:]` and related methods.
  */
+MGL_EXPORT
 @interface MGLShapeCollection : MGLShape
 
 /**

platform/darwin/src/MGLShapeSource.h

@@ -1,5 +1,6 @@
 #import "MGLSource.h"
 
+#import "MGLFoundation.h"
 #import "MGLTypes.h"
 #import "MGLShape.h"
 
@@ -17,14 +18,14 @@ typedef NSString *MGLShapeSourceOption NS_STRING_ENUM;
  If the `shape` property contains point shapes, setting this option to
  `YES` clusters the points by radius into groups. The default value is `NO`.
  */
-extern const MGLShapeSourceOption MGLShapeSourceOptionClustered;
+extern MGL_EXPORT const MGLShapeSourceOption MGLShapeSourceOptionClustered;
 
 /**
  An `NSNumber` object containing an integer; specifies the radius of each
  cluster if clustering is enabled. A value of 512 produces a radius equal to
  the width of a tile. The default value is 50.
  */
-extern const MGLShapeSourceOption MGLShapeSourceOptionClusterRadius;
+extern MGL_EXPORT const MGLShapeSourceOption MGLShapeSourceOptionClusterRadius;
 
 /**
  An `NSNumber` object containing an integer; specifies the maximum zoom level at
@@ -32,14 +33,14 @@ extern const MGLShapeSourceOption MGLShapeSourceOptionClusterRadius;
  less than the value of `MGLShapeSourceOptionMaximumZoomLevel` so that, at the
  maximum zoom level, the shapes are not clustered.
  */
-extern const MGLShapeSourceOption MGLShapeSourceOptionMaximumZoomLevelForClustering;
+extern MGL_EXPORT const MGLShapeSourceOption MGLShapeSourceOptionMaximumZoomLevelForClustering;
 
 /**
  An `NSNumber` object containing an integer; specifies the maximum zoom level at
  which to create vector tiles. A greater value produces greater detail at high
  zoom levels. The default value is 18.
  */
-extern const MGLShapeSourceOption MGLShapeSourceOptionMaximumZoomLevel;
+extern MGL_EXPORT const MGLShapeSourceOption MGLShapeSourceOptionMaximumZoomLevel;
 
 /**
  An `NSNumber` object containing an integer; specifies the size of the tile
@@ -47,14 +48,14 @@ extern const MGLShapeSourceOption MGLShapeSourceOptionMaximumZoomLevel;
  buffer as wide as the tile itself. Larger values produce fewer rendering 
  artifacts near tile edges and slower performance. The default value is 128.
  */
-extern const MGLShapeSourceOption MGLShapeSourceOptionBuffer;
+extern MGL_EXPORT const MGLShapeSourceOption MGLShapeSourceOptionBuffer;
 
 /**
  An `NSNumber` object containing a double; specifies the Douglas-Peucker
  simplification tolerance. A greater value produces simpler geometries and
  improves performance. The default value is 0.375.
  */
-extern const MGLShapeSourceOption MGLShapeSourceOptionSimplificationTolerance;
+extern MGL_EXPORT const MGLShapeSourceOption MGLShapeSourceOptionSimplificationTolerance;
 
 /**
  `MGLShapeSource` is a map content source that supplies vector shapes to be
@@ -75,6 +76,7 @@ extern const MGLShapeSourceOption MGLShapeSourceOptionSimplificationTolerance;
  Any vector style layer initialized with a shape source should have a `nil`
  value in its `sourceLayerIdentifier` property.
  */
+MGL_EXPORT
 @interface MGLShapeSource : MGLSource
 
 #pragma mark Initializing a Source

platform/darwin/src/MGLShapeSource_Private.h

@@ -1,5 +1,5 @@
+#import "MGLFoundation.h"
 #import "MGLShapeSource.h"
-#import "MGLShapeSource_Private.h"
 
 NS_ASSUME_NONNULL_BEGIN
 
@@ -16,6 +16,7 @@ namespace mbgl {
 
 @end
 
+MGL_EXPORT
 mbgl::style::GeoJSONOptions MGLGeoJSONOptionsFromDictionary(NS_DICTIONARY_OF(MGLShapeSourceOption, id) *options);
 
 NS_ASSUME_NONNULL_END

platform/darwin/src/MGLSource.h

@@ -1,5 +1,7 @@
 #import <Foundation/Foundation.h>
 
+#import "MGLFoundation.h"
+
 NS_ASSUME_NONNULL_BEGIN
 
 /**
@@ -18,6 +20,7 @@ NS_ASSUME_NONNULL_BEGIN
  subclasses of this class. Instead, create instances of `MGLShapeSource` and the
  concrete subclasses of `MGLTileSource`.
  */
+MGL_EXPORT
 @interface MGLSource : NSObject
 
 #pragma mark Initializing a Source

platform/darwin/src/MGLStyle.h

@@ -1,5 +1,6 @@
 #import <Foundation/Foundation.h>
 
+#import "MGLFoundation.h"
 #import "MGLStyleLayer.h"
 
 #import "MGLTypes.h"
@@ -27,7 +28,7 @@ NS_ASSUME_NONNULL_BEGIN
     the constant itself. Such details may change significantly from version to
     version.
  */
-static const NSInteger MGLStyleDefaultVersion = 9;
+static MGL_EXPORT const NSInteger MGLStyleDefaultVersion = 9;
 
 /**
  The proxy object for the current map style.
@@ -45,6 +46,7 @@ static const NSInteger MGLStyleDefaultVersion = 9;
     or `-mapView:didFinishLoadingStyle:` as indicators that it's safe
     to modify the map's style.
  */
+MGL_EXPORT
 @interface MGLStyle : NSObject
 
 #pragma mark Accessing Default Styles

platform/darwin/src/MGLStyleLayer.h

@@ -1,5 +1,6 @@
 #import <Foundation/Foundation.h>
 
+#import "MGLFoundation.h"
 #import "MGLTypes.h"
 
 NS_ASSUME_NONNULL_BEGIN
@@ -18,6 +19,7 @@ NS_ASSUME_NONNULL_BEGIN
  `MGLBackgroundStyleLayer` and the concrete subclasses of
  `MGLForegroundStyleLayer`.
  */
+MGL_EXPORT
 @interface MGLStyleLayer : NSObject
 
 #pragma mark Initializing a Style Layer

platform/darwin/src/MGLStyleLayer.h.ejs

@@ -8,6 +8,7 @@
 // This file is generated. 
 // Edit platform/darwin/scripts/generate-style-code.js, then run `make style-code-darwin`.
 
+#import "MGLFoundation.h"
 #import "MGLStyleValue.h"
 #import "MGL<%-
 (type === 'background' ? '' :
@@ -68,6 +69,7 @@ typedef NS_ENUM(NSUInteger, MGL<%- camelize(property.name) %>) {
  `-[MGLStyle layerWithIdentifier:]` method. 
  */
 <% } -%>
+MGL_EXPORT
 @interface MGL<%- camelize(type) %>StyleLayer : MGL<%-
 (type === 'background' ? '' :
  (type === 'raster' ? 'Foreground' :

platform/darwin/src/MGLStyleValue.h

@@ -1,6 +1,8 @@
 #import <Foundation/Foundation.h>
 #import <CoreGraphics/CoreGraphics.h>
 
+#import "MGLFoundation.h"
+
 NS_ASSUME_NONNULL_BEGIN
 
 /**
@@ -25,6 +27,7 @@ NS_ASSUME_NONNULL_BEGIN
  <li>`NSArray`</li>
  </ul>
  */
+MGL_EXPORT
 @interface MGLStyleValue<T> : NSObject
 
 #pragma mark Creating a Style Value
@@ -68,6 +71,7 @@ NS_ASSUME_NONNULL_BEGIN
  The `MGLStyleConstantValue` class takes a generic parameter `T` that indicates
  the Foundation class being wrapped by this class.
  */
+MGL_EXPORT
 @interface MGLStyleConstantValue<T> : MGLStyleValue<T>
 
 #pragma mark Creating a Style Constant Value
@@ -111,6 +115,7 @@ NS_ASSUME_NONNULL_BEGIN
  The `MGLStyleFunction` class takes a generic parameter `T` that indicates the
  Foundation class being wrapped by this class.
  */
+MGL_EXPORT
 @interface MGLStyleFunction<T> : MGLStyleValue<T>
 
 #pragma mark Creating a Style Function

platform/darwin/src/MGLSymbolStyleLayer.h

@@ -1,6 +1,7 @@
 // This file is generated. 
 // Edit platform/darwin/scripts/generate-style-code.js, then run `make style-code-darwin`.
 
+#import "MGLFoundation.h"
 #import "MGLStyleValue.h"
 #import "MGLVectorStyleLayer.h"
 
@@ -228,6 +229,7 @@ typedef NS_ENUM(NSUInteger, MGLTextTranslateAnchor) {
  `MGLMapView` for its `style` and obtain existing layers using the 
  `-[MGLStyle layerWithIdentifier:]` method. 
  */
+MGL_EXPORT
 @interface MGLSymbolStyleLayer : MGLVectorStyleLayer
 
 #pragma mark - Accessing the Layout Attributes

platform/darwin/src/MGLTilePyramidOfflineRegion.h

@@ -1,5 +1,6 @@
 #import <Foundation/Foundation.h>
 
+#import "MGLFoundation.h"
 #import "MGLOfflineRegion.h"
 #import "MGLGeometry.h"
 
@@ -9,6 +10,7 @@ NS_ASSUME_NONNULL_BEGIN
  An offline region defined by a style URL, geographic coordinate bounds, and
  range of zoom levels.
  */
+MGL_EXPORT
 @interface MGLTilePyramidOfflineRegion : NSObject <MGLOfflineRegion, NSSecureCoding, NSCopying>
 
 /**

platform/darwin/src/MGLTileSource.h

@@ -1,5 +1,6 @@
 #import <Foundation/Foundation.h>
 
+#import "MGLFoundation.h"
 #import "MGLSource.h"
 #import "MGLTypes.h"
 
@@ -20,7 +21,7 @@ typedef NSString *MGLTileSourceOption NS_STRING_ENUM;
  `MGLTileSourceOptionMaximumZoomLevel`, if specified. The default value for this
  option is 0.
  */
-extern const MGLTileSourceOption MGLTileSourceOptionMinimumZoomLevel;
+extern MGL_EXPORT const MGLTileSourceOption MGLTileSourceOptionMinimumZoomLevel;
 
 /**
  An `NSNumber` object containing an unsigned integer that specifies the maximum
@@ -30,7 +31,7 @@ extern const MGLTileSourceOption MGLTileSourceOptionMinimumZoomLevel;
  `MGLTileSourceOptionMinimumZoomLevel`, if specified. The default value for this
  option is 22.
  */
-extern const MGLTileSourceOption MGLTileSourceOptionMaximumZoomLevel;
+extern MGL_EXPORT const MGLTileSourceOption MGLTileSourceOptionMaximumZoomLevel;
 
 #if TARGET_OS_IPHONE
 /**
@@ -42,7 +43,7 @@ extern const MGLTileSourceOption MGLTileSourceOptionMaximumZoomLevel;
  `MGLTileSourceOptionAttributionInfos` option is specified, this option is
  ignored.
  */
-extern const MGLTileSourceOption MGLTileSourceOptionAttributionHTMLString;
+extern MGL_EXPORT const MGLTileSourceOption MGLTileSourceOptionAttributionHTMLString;
 
 /**
  An array of `MGLAttributionInfo` objects defining the buttons to be displayed
@@ -51,7 +52,7 @@ extern const MGLTileSourceOption MGLTileSourceOptionAttributionHTMLString;
  
  By default, no attribution statements are displayed.
  */
-extern const MGLTileSourceOption MGLTileSourceOptionAttributionInfos;
+extern MGL_EXPORT const MGLTileSourceOption MGLTileSourceOptionAttributionInfos;
 #else
 /**
  An HTML string defining the buttons to be displayed in the map view’s
@@ -61,7 +62,7 @@ extern const MGLTileSourceOption MGLTileSourceOptionAttributionInfos;
  `MGLTileSourceOptionAttributionInfos` option is specified, this option is
  ignored.
  */
-extern const MGLTileSourceOption MGLTileSourceOptionAttributionHTMLString;
+extern MGL_EXPORT const MGLTileSourceOption MGLTileSourceOptionAttributionHTMLString;
 
 /**
  An array of `MGLAttributionInfo` objects defining the buttons to be displayed
@@ -70,7 +71,7 @@ extern const MGLTileSourceOption MGLTileSourceOptionAttributionHTMLString;
  
  By default, no attribution statements are displayed.
  */
-extern const MGLTileSourceOption MGLTileSourceOptionAttributionInfos;
+extern MGL_EXPORT const MGLTileSourceOption MGLTileSourceOptionAttributionInfos;
 #endif
 
 /**
@@ -80,7 +81,7 @@ extern const MGLTileSourceOption MGLTileSourceOptionAttributionInfos;
  
  The default value for this option is `MGLTileCoordinateSystemXYZ`.
  */
-extern const MGLTileSourceOption MGLTileSourceOptionTileCoordinateSystem;
+extern MGL_EXPORT const MGLTileSourceOption MGLTileSourceOptionTileCoordinateSystem;
 
 /**
  Tile coordinate systems that determine how tile coordinates in tile URLs are
@@ -119,6 +120,7 @@ typedef NS_ENUM(NSUInteger, MGLTileCoordinateSystem) {
  subclasses of this class. Instead, create instances of `MGLRasterSource` and
  `MGLVectorSource`.
  */
+MGL_EXPORT
 @interface MGLTileSource : MGLSource
 
 #pragma mark Initializing a Source

platform/darwin/src/MGLTileSource_Private.h

@@ -1,7 +1,8 @@
-#import "MGLTileSource.h"
-
 #import <CoreGraphics/CoreGraphics.h>
 
+#import "MGLFoundation.h"
+#import "MGLTileSource.h"
+
 NS_ASSUME_NONNULL_BEGIN
 
 namespace mbgl {
@@ -31,6 +32,7 @@ namespace mbgl {
 
 @end
 
+MGL_EXPORT
 mbgl::Tileset MGLTileSetFromTileURLTemplates(NS_ARRAY_OF(NSString *) *tileURLTemplates, NS_DICTIONARY_OF(MGLTileSourceOption, id) * _Nullable options);
 
 NS_ASSUME_NONNULL_END

platform/darwin/src/MGLTypes.h

@@ -1,5 +1,7 @@
 #import <Foundation/Foundation.h>
 
+#import "MGLFoundation.h"
+
 #pragma once
 
 #if TARGET_OS_IPHONE
@@ -28,7 +30,7 @@ NS_ASSUME_NONNULL_BEGIN
 #endif
 
 /** Indicates an error occurred in the Mapbox SDK. */
-extern NSErrorDomain const MGLErrorDomain;
+extern MGL_EXPORT NSErrorDomain const MGLErrorDomain;
 
 /** Error constants for the Mapbox SDK. */
 typedef NS_ENUM(NSInteger, MGLErrorCode) {

platform/darwin/src/MGLVectorSource.h

@@ -1,3 +1,4 @@
+#import "MGLFoundation.h"
 #import "MGLTileSource.h"
 
 NS_ASSUME_NONNULL_BEGIN
@@ -25,6 +26,7 @@ NS_ASSUME_NONNULL_BEGIN
  layer initialized with a vector source must have a non-`nil` value in its
  `sourceLayerIdentifier` property.
  */
+MGL_EXPORT
 @interface MGLVectorSource : MGLTileSource
 
 - (instancetype)initWithIdentifier:(NSString *)identifier configurationURL:(NSURL *)configurationURL NS_DESIGNATED_INITIALIZER;

platform/darwin/src/MGLVectorStyleLayer.h

@@ -1,5 +1,6 @@
 #import <Foundation/Foundation.h>
 
+#import "MGLFoundation.h"
 #import "MGLForegroundStyleLayer.h"
 
 NS_ASSUME_NONNULL_BEGIN
@@ -13,6 +14,7 @@ NS_ASSUME_NONNULL_BEGIN
  subclasses: `MGLCircleStyleLayer`, `MGLFillStyleLayer`, `MGLLineStyleLayer`,
  and `MGLSymbolStyleLayer`.
  */
+MGL_EXPORT
 @interface MGLVectorStyleLayer : MGLForegroundStyleLayer
 
 #pragma mark Refining a Style Layer’s Content

platform/darwin/test/MGLVersionNumber.m

@@ -0,0 +1,15 @@
+#import <Mapbox/Mapbox.h>
+
+#import <XCTest/XCTest.h>
+
+@interface MGLVersionTests : XCTestCase
+
+@end
+
+@implementation MGLVersionTests
+
+- (void)testVersionNumber {
+    XCTAssertEqual(1, MapboxVersionNumber);
+}
+
+@end

platform/ios/ios.xcodeproj/project.pbxproj

@@ -163,6 +163,9 @@
 		40F887711D7A1E59008ECB67 /* MGLShapeSource_Private.h in Headers */ = {isa = PBXBuildFile; fileRef = 40F8876F1D7A1DB8008ECB67 /* MGLShapeSource_Private.h */; };
 		40FDA76B1CCAAA6800442548 /* MBXAnnotationView.m in Sources */ = {isa = PBXBuildFile; fileRef = 40FDA76A1CCAAA6800442548 /* MBXAnnotationView.m */; };
 		554180421D2E97DE00012372 /* OpenGLES.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = 554180411D2E97DE00012372 /* OpenGLES.framework */; };
+		556660CA1E1BF3A900E2C41B /* MGLFoundation.h in Headers */ = {isa = PBXBuildFile; fileRef = 556660C91E1BF3A900E2C41B /* MGLFoundation.h */; settings = {ATTRIBUTES = (Public, ); }; };
+		556660D81E1D085500E2C41B /* MGLVersionNumber.m in Sources */ = {isa = PBXBuildFile; fileRef = 556660D71E1D085500E2C41B /* MGLVersionNumber.m */; };
+		556660DB1E1D8E8D00E2C41B /* MGLFoundation.h in Headers */ = {isa = PBXBuildFile; fileRef = 556660C91E1BF3A900E2C41B /* MGLFoundation.h */; settings = {ATTRIBUTES = (Public, ); }; };
 		55D8C9961D0F18CE00F42F10 /* libsqlite3.tbd in Frameworks */ = {isa = PBXBuildFile; fileRef = 55D8C9951D0F18CE00F42F10 /* libsqlite3.tbd */; };
 		7E016D7E1D9E86BE00A29A21 /* MGLPolyline+MGLAdditions.h in Headers */ = {isa = PBXBuildFile; fileRef = 7E016D7C1D9E86BE00A29A21 /* MGLPolyline+MGLAdditions.h */; };
 		7E016D7F1D9E86BE00A29A21 /* MGLPolyline+MGLAdditions.h in Headers */ = {isa = PBXBuildFile; fileRef = 7E016D7C1D9E86BE00A29A21 /* MGLPolyline+MGLAdditions.h */; };
@@ -609,6 +612,8 @@
 		40FDA7691CCAAA6800442548 /* MBXAnnotationView.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = MBXAnnotationView.h; sourceTree = "<group>"; };
 		40FDA76A1CCAAA6800442548 /* MBXAnnotationView.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = MBXAnnotationView.m; sourceTree = "<group>"; };
 		554180411D2E97DE00012372 /* OpenGLES.framework */ = {isa = PBXFileReference; lastKnownFileType = wrapper.framework; name = OpenGLES.framework; path = System/Library/Frameworks/OpenGLES.framework; sourceTree = SDKROOT; };
+		556660C91E1BF3A900E2C41B /* MGLFoundation.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; path = MGLFoundation.h; sourceTree = "<group>"; };
+		556660D71E1D085500E2C41B /* MGLVersionNumber.m */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.objc; name = MGLVersionNumber.m; path = ../../darwin/test/MGLVersionNumber.m; sourceTree = "<group>"; };
 		55D8C9941D0F133500F42F10 /* config.xcconfig */ = {isa = PBXFileReference; lastKnownFileType = text.xcconfig; name = config.xcconfig; path = ../../build/ios/config.xcconfig; sourceTree = "<group>"; };
 		55D8C9951D0F18CE00F42F10 /* libsqlite3.tbd */ = {isa = PBXFileReference; lastKnownFileType = "sourcecode.text-based-dylib-definition"; name = libsqlite3.tbd; path = usr/lib/libsqlite3.tbd; sourceTree = SDKROOT; };
 		7E016D7C1D9E86BE00A29A21 /* MGLPolyline+MGLAdditions.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = "MGLPolyline+MGLAdditions.h"; sourceTree = "<group>"; };
@@ -1097,6 +1102,7 @@
 				DA2E885F1CC0382C00F24E7B /* MGLOfflineStorageTests.m */,
 				DA2E88601CC0382C00F24E7B /* MGLStyleTests.mm */,
 				DD58A4C51D822BD000E1F038 /* MGLExpressionTests.mm */,
+				556660D71E1D085500E2C41B /* MGLVersionNumber.m */,
 				DA2E88551CC036F400F24E7B /* Info.plist */,
 				DA2784FB1DF02FF4001D5B8D /* Media.xcassets */,
 			);
@@ -1135,6 +1141,7 @@
 				DA00FC8C1D5EEB0D009AABC8 /* MGLAttributionInfo.h */,
 				DAF0D8171DFE6B2800B28378 /* MGLAttributionInfo_Private.h */,
 				DA00FC8D1D5EEB0D009AABC8 /* MGLAttributionInfo.mm */,
+				556660C91E1BF3A900E2C41B /* MGLFoundation.h */,
 				DA8847E21CBAFA5100AB86E3 /* MGLMapCamera.h */,
 				DA8848031CBAFA6200AB86E3 /* MGLMapCamera.mm */,
 				DD0902A41DB18F1B00C5BDCE /* MGLNetworkConfiguration.h */,
@@ -1442,6 +1449,7 @@
 			isa = PBXHeadersBuildPhase;
 			buildActionMask = 2147483647;
 			files = (
+				556660DB1E1D8E8D00E2C41B /* MGLFoundation.h in Headers */,
 				35D13AC31D3D19DD00AFB4E0 /* MGLFillStyleLayer.h in Headers */,
 				DA88483A1CBAFB8500AB86E3 /* MGLAnnotationImage.h in Headers */,
 				DA35A2BB1CCA9A6900E826B2 /* MGLClockDirectionFormatter.h in Headers */,
@@ -1555,6 +1563,7 @@
 			isa = PBXHeadersBuildPhase;
 			buildActionMask = 2147483647;
 			files = (
+				556660CA1E1BF3A900E2C41B /* MGLFoundation.h in Headers */,
 				4032C5C01DE1FC780062E8BD /* NSValue+MGLStyleEnumAttributeAdditions.h in Headers */,
 				35B82BF91D6C5F8400B1B721 /* NSPredicate+MGLAdditions.h in Headers */,
 				DA35A2CA1CCAAAD200E826B2 /* NSValue+MGLAdditions.h in Headers */,
@@ -1962,6 +1971,7 @@
 				353D23961D0B0DFE002BE09D /* MGLAnnotationViewTests.m in Sources */,
 				35E208A71D24210F00EC9A46 /* MGLNSDataAdditionsTests.m in Sources */,
 				DA0CD5901CF56F6A00A5F5A5 /* MGLFeatureTests.mm in Sources */,
+				556660D81E1D085500E2C41B /* MGLVersionNumber.m in Sources */,
 			);
 			runOnlyForDeploymentPostprocessing = 0;
 		};
@@ -2432,7 +2442,7 @@
 				PRODUCT_NAME = Mapbox;
 				SKIP_INSTALL = YES;
 				VERSIONING_SYSTEM = "apple-generic";
-				VERSION_INFO_PREFIX = "";
+				VERSION_INFO_PREFIX = "__attribute__((visibility (\"default\"))) ";
 			};
 			name = Debug;
 		};
@@ -2465,7 +2475,7 @@
 				PRODUCT_NAME = Mapbox;
 				SKIP_INSTALL = YES;
 				VERSIONING_SYSTEM = "apple-generic";
-				VERSION_INFO_PREFIX = "";
+				VERSION_INFO_PREFIX = "__attribute__((visibility (\"default\"))) ";
 			};
 			name = Release;
 		};
@@ -2513,6 +2523,7 @@
 				PRODUCT_NAME = Mapbox;
 				PUBLIC_HEADERS_FOLDER_PATH = Headers;
 				SKIP_INSTALL = YES;
+				VERSION_INFO_PREFIX = "__attribute__((visibility (\"default\"))) ";
 			};
 			name = Debug;
 		};
@@ -2538,6 +2549,7 @@
 				PRODUCT_NAME = Mapbox;
 				PUBLIC_HEADERS_FOLDER_PATH = Headers;
 				SKIP_INSTALL = YES;
+				VERSION_INFO_PREFIX = "__attribute__((visibility (\"default\"))) ";
 			};
 			name = Release;
 		};

platform/ios/src/Mapbox.h

@@ -1,10 +1,12 @@
 #import <Foundation/Foundation.h>
 
+#import "MGLFoundation.h"
+
 /// Project version number for Mapbox.
-FOUNDATION_EXPORT double MapboxVersionNumber;
+FOUNDATION_EXPORT MGL_EXPORT double MapboxVersionNumber;
 
 /// Project version string for Mapbox.
-FOUNDATION_EXPORT const unsigned char MapboxVersionString[];
+FOUNDATION_EXPORT MGL_EXPORT const unsigned char MapboxVersionString[];
 
 #import "MGLAnnotationView.h"
 #import "MGLAccountManager.h"

platform/macos/config.cmake

@@ -9,8 +9,6 @@ mason_use(icu VERSION 58.1)
 include(cmake/loop-darwin.cmake)
 
 macro(mbgl_platform_core)
-    set_xcode_property(mbgl-core GCC_SYMBOLS_PRIVATE_EXTERN YES)
-
     target_sources(mbgl-core
         # File source
         PRIVATE platform/darwin/src/http_file_source.mm
@@ -62,6 +60,7 @@ macro(mbgl_platform_core)
 
     target_compile_options(mbgl-core
         PRIVATE -fobjc-arc
+        PRIVATE -fvisibility=hidden
     )
 
     target_include_directories(mbgl-core
@@ -85,8 +84,6 @@ endmacro()
 
 
 macro(mbgl_platform_render)
-    set_xcode_property(mbgl-render GCC_SYMBOLS_PRIVATE_EXTERN YES)
-
     target_link_libraries(mbgl-render
         PRIVATE mbgl-loop
         PRIVATE "-framework Foundation"
@@ -100,8 +97,6 @@ endmacro()
 
 
 macro(mbgl_platform_offline)
-    set_xcode_property(mbgl-offline GCC_SYMBOLS_PRIVATE_EXTERN YES)
-
     target_link_libraries(mbgl-offline
         PRIVATE mbgl-loop
         PRIVATE "-framework Foundation"
@@ -115,8 +110,6 @@ endmacro()
 
 
 macro(mbgl_platform_test)
-    set_xcode_property(mbgl-test GCC_SYMBOLS_PRIVATE_EXTERN YES)
-
     target_sources(mbgl-test
         PRIVATE test/src/main.cpp
     )
@@ -127,6 +120,10 @@ macro(mbgl_platform_test)
         COMPILE_FLAGS -DWORK_DIRECTORY="${CMAKE_SOURCE_DIR}"
     )
 
+    target_compile_options(mbgl-test
+        PRIVATE -fvisibility=hidden
+    )
+
     target_link_libraries(mbgl-test
         PRIVATE mbgl-loop
         PRIVATE "-framework Foundation"
@@ -139,7 +136,9 @@ macro(mbgl_platform_test)
 endmacro()
 
 macro(mbgl_platform_benchmark)
-    set_xcode_property(mbgl-benchmark GCC_SYMBOLS_PRIVATE_EXTERN YES)
+    target_compile_options(mbgl-benchmark
+        PRIVATE -fvisibility=hidden
+    )
 
     target_sources(mbgl-benchmark
         PRIVATE benchmark/src/main.cpp
@@ -163,7 +162,9 @@ macro(mbgl_platform_benchmark)
 endmacro()
 
 macro(mbgl_platform_node)
-    set_xcode_property(mbgl-node GCC_SYMBOLS_PRIVATE_EXTERN YES)
+    target_compile_options(mbgl-node
+        PRIVATE -fvisibility=hidden
+    )
 
     target_link_libraries(mbgl-node
         PRIVATE "-framework Foundation"

platform/macos/macos.xcodeproj/project.pbxproj

@@ -58,6 +58,8 @@
 		40E1601D1DF217D6005EA6D9 /* MGLStyleLayerTests.m in Sources */ = {isa = PBXBuildFile; fileRef = 40E1601B1DF216E6005EA6D9 /* MGLStyleLayerTests.m */; };
 		52BECB0A1CC5A26F009CD791 /* SystemConfiguration.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = 52BECB091CC5A26F009CD791 /* SystemConfiguration.framework */; };
 		5548BE781D09E718005DDE81 /* libmbgl-core.a in Frameworks */ = {isa = PBXBuildFile; fileRef = DAE6C3451CC31D1200DB3429 /* libmbgl-core.a */; };
+		556660C61E1BEA0100E2C41B /* MGLFoundation.h in Headers */ = {isa = PBXBuildFile; fileRef = 556660C51E1BEA0100E2C41B /* MGLFoundation.h */; settings = {ATTRIBUTES = (Public, ); }; };
+		556660D61E1D07E400E2C41B /* MGLVersionNumber.m in Sources */ = {isa = PBXBuildFile; fileRef = 556660D51E1D07E400E2C41B /* MGLVersionNumber.m */; };
 		558F18221D0B13B100123F46 /* libmbgl-loop.a in Frameworks */ = {isa = PBXBuildFile; fileRef = 558F18211D0B13B000123F46 /* libmbgl-loop.a */; };
 		55D9B4B11D005D3900C1CCE2 /* libz.tbd in Frameworks */ = {isa = PBXBuildFile; fileRef = 55D9B4B01D005D3900C1CCE2 /* libz.tbd */; };
 		DA00FC8A1D5EEAC3009AABC8 /* MGLAttributionInfo.h in Headers */ = {isa = PBXBuildFile; fileRef = DA00FC881D5EEAC3009AABC8 /* MGLAttributionInfo.h */; settings = {ATTRIBUTES = (Public, ); }; };
@@ -305,6 +307,8 @@
 		52BECB091CC5A26F009CD791 /* SystemConfiguration.framework */ = {isa = PBXFileReference; lastKnownFileType = wrapper.framework; name = SystemConfiguration.framework; path = System/Library/Frameworks/SystemConfiguration.framework; sourceTree = SDKROOT; };
 		5548BE791D0ACBB2005DDE81 /* libmbgl-loop-darwin.a */ = {isa = PBXFileReference; lastKnownFileType = archive.ar; name = "libmbgl-loop-darwin.a"; path = "cmake/Debug/libmbgl-loop-darwin.a"; sourceTree = "<group>"; };
 		5548BE7B1D0ACBBD005DDE81 /* libmbgl-loop-darwin.a */ = {isa = PBXFileReference; lastKnownFileType = archive.ar; name = "libmbgl-loop-darwin.a"; path = "cmake/Debug/libmbgl-loop-darwin.a"; sourceTree = "<group>"; };
+		556660C51E1BEA0100E2C41B /* MGLFoundation.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; path = MGLFoundation.h; sourceTree = "<group>"; };
+		556660D51E1D07E400E2C41B /* MGLVersionNumber.m */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.objc; name = MGLVersionNumber.m; path = ../../darwin/test/MGLVersionNumber.m; sourceTree = "<group>"; };
 		558F18211D0B13B000123F46 /* libmbgl-loop.a */ = {isa = PBXFileReference; lastKnownFileType = archive.ar; name = "libmbgl-loop.a"; path = "../../build/osx/Debug/libmbgl-loop.a"; sourceTree = "<group>"; };
 		55D9B4B01D005D3900C1CCE2 /* libz.tbd */ = {isa = PBXFileReference; lastKnownFileType = "sourcecode.text-based-dylib-definition"; name = libz.tbd; path = usr/lib/libz.tbd; sourceTree = SDKROOT; };
 		55FE0E8D1D100A0900FD240B /* config.xcconfig */ = {isa = PBXFileReference; lastKnownFileType = text.xcconfig; name = config.xcconfig; path = ../../build/macos/config.xcconfig; sourceTree = "<group>"; };
@@ -882,6 +886,7 @@
 				DAE6C3CB1CC34BD800DB3429 /* MGLOfflineStorageTests.m */,
 				DAE6C3CC1CC34BD800DB3429 /* MGLStyleTests.mm */,
 				DD58A4C71D822C6200E1F038 /* MGLExpressionTests.mm */,
+				556660D51E1D07E400E2C41B /* MGLVersionNumber.m */,
 				DAE6C33A1CC30DB200DB3429 /* Info.plist */,
 				DA2784FD1DF03060001D5B8D /* Media.xcassets */,
 			);
@@ -903,6 +908,7 @@
 				DA00FC881D5EEAC3009AABC8 /* MGLAttributionInfo.h */,
 				DAF0D8151DFE6B1800B28378 /* MGLAttributionInfo_Private.h */,
 				DA00FC891D5EEAC3009AABC8 /* MGLAttributionInfo.mm */,
+				556660C51E1BEA0100E2C41B /* MGLFoundation.h */,
 				DAE6C34D1CC31E0400DB3429 /* MGLMapCamera.h */,
 				DAE6C36E1CC31E2A00DB3429 /* MGLMapCamera.mm */,
 				DD0902B01DB1AC6400C5BDCE /* MGLNetworkConfiguration.h */,
@@ -957,6 +963,7 @@
 			isa = PBXHeadersBuildPhase;
 			buildActionMask = 2147483647;
 			files = (
+				556660C61E1BEA0100E2C41B /* MGLFoundation.h in Headers */,
 				DA8F258F1D51CA600010E6B5 /* MGLRasterStyleLayer.h in Headers */,
 				3508EC641D749D39009B0EE4 /* NSExpression+MGLAdditions.h in Headers */,
 				DAE6C38D1CC31E2A00DB3429 /* MGLOfflineRegion_Private.h in Headers */,
@@ -1322,6 +1329,7 @@
 				3599A3E81DF70E2000E77FB2 /* MGLStyleValueTests.m in Sources */,
 				DAEDC4321D6033F1000224FF /* MGLAttributionInfoTests.m in Sources */,
 				DA0CD58E1CF56F5800A5F5A5 /* MGLFeatureTests.mm in Sources */,
+				556660D61E1D07E400E2C41B /* MGLVersionNumber.m in Sources */,
 				DA2207BC1DC076940002F84D /* MGLStyleValueTests.swift in Sources */,
 			);
 			runOnlyForDeploymentPostprocessing = 0;
@@ -1489,6 +1497,7 @@
 				COMBINE_HIDPI_IMAGES = YES;
 				INFOPLIST_FILE = "$(SRCROOT)/app/Info.plist";
 				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/../Frameworks";
+				OTHER_CFLAGS = "-fvisibility=hidden";
 				PRODUCT_BUNDLE_IDENTIFIER = com.mapbox.MapboxGL;
 				PRODUCT_NAME = "Mapbox GL";
 			};
@@ -1501,6 +1510,7 @@
 				COMBINE_HIDPI_IMAGES = YES;
 				INFOPLIST_FILE = "$(SRCROOT)/app/Info.plist";
 				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/../Frameworks";
+				OTHER_CFLAGS = "-fvisibility=hidden";
 				PRODUCT_BUNDLE_IDENTIFIER = com.mapbox.MapboxGL;
 				PRODUCT_NAME = "Mapbox GL";
 			};
@@ -1542,7 +1552,6 @@
 				DYLIB_CURRENT_VERSION = 1;
 				DYLIB_INSTALL_NAME_BASE = "@rpath";
 				FRAMEWORK_VERSION = A;
-				GCC_SYMBOLS_PRIVATE_EXTERN = YES;
 				HEADER_SEARCH_PATHS = (
 					"$(mbgl_core_INCLUDE_DIRECTORIES)",
 					"$(mbgl_loop_INCLUDE_DIRECTORIES)",
@@ -1550,6 +1559,7 @@
 				INFOPLIST_FILE = "$(SRCROOT)/sdk/Info.plist";
 				INSTALL_PATH = "$(LOCAL_LIBRARY_DIR)/Frameworks";
 				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/../Frameworks @loader_path/Frameworks";
+				OTHER_CFLAGS = "-fvisibility=hidden";
 				OTHER_LDFLAGS = (
 					"$(mbgl_core_LINK_LIBRARIES)",
 					"$(mbgl_loop_LINK_LIBRARIES)",
@@ -1558,7 +1568,7 @@
 				PRODUCT_NAME = Mapbox;
 				SKIP_INSTALL = YES;
 				VERSIONING_SYSTEM = "apple-generic";
-				VERSION_INFO_PREFIX = "";
+				VERSION_INFO_PREFIX = "__attribute__((visibility (\"default\"))) ";
 			};
 			name = Debug;
 		};
@@ -1575,7 +1585,6 @@
 				DYLIB_CURRENT_VERSION = 1;
 				DYLIB_INSTALL_NAME_BASE = "@rpath";
 				FRAMEWORK_VERSION = A;
-				GCC_SYMBOLS_PRIVATE_EXTERN = YES;
 				HEADER_SEARCH_PATHS = (
 					"$(mbgl_core_INCLUDE_DIRECTORIES)",
 					"$(mbgl_loop_INCLUDE_DIRECTORIES)",
@@ -1583,6 +1592,7 @@
 				INFOPLIST_FILE = "$(SRCROOT)/sdk/Info.plist";
 				INSTALL_PATH = "$(LOCAL_LIBRARY_DIR)/Frameworks";
 				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/../Frameworks @loader_path/Frameworks";
+				OTHER_CFLAGS = "-fvisibility=hidden";
 				OTHER_LDFLAGS = (
 					"$(mbgl_core_LINK_LIBRARIES)",
 					"$(mbgl_loop_LINK_LIBRARIES)",
@@ -1592,7 +1602,7 @@
 				SKIP_INSTALL = YES;
 				STRIP_STYLE = "non-global";
 				VERSIONING_SYSTEM = "apple-generic";
-				VERSION_INFO_PREFIX = "";
+				VERSION_INFO_PREFIX = "__attribute__((visibility (\"default\"))) ";
 			};
 			name = Release;
 		};

platform/macos/src/MGLAnnotationImage.h

@@ -1,5 +1,7 @@
 #import <AppKit/AppKit.h>
 
+#import "MGLFoundation.h"
+
 NS_ASSUME_NONNULL_BEGIN
 
 /**
@@ -8,6 +10,7 @@ NS_ASSUME_NONNULL_BEGIN
  `NSImage` objects with annotation-related metadata. They may be recycled later
  and put into a reuse queue that is maintained by the map view.
  */
+MGL_EXPORT
 @interface MGLAnnotationImage : NSObject
 
 #pragma mark Initializing and Preparing the Image Object

platform/macos/src/MGLAttributionButton.h

@@ -1,5 +1,6 @@
 #import <Cocoa/Cocoa.h>
 
+#import "MGLFoundation.h"
 #import "MGLTypes.h"
 
 NS_ASSUME_NONNULL_BEGIN
@@ -7,6 +8,7 @@ NS_ASSUME_NONNULL_BEGIN
 @class MGLAttributionInfo;
 
 /// Button that looks like a hyperlink and opens a URL.
+MGL_EXPORT
 @interface MGLAttributionButton : NSButton
 
 /// Returns an `MGLAttributionButton` instance with the given info.

platform/macos/src/MGLMapView.h

@@ -1,6 +1,7 @@
 #import <Cocoa/Cocoa.h>
 #import <CoreLocation/CoreLocation.h>
 
+#import "MGLFoundation.h"
 #import "MGLTypes.h"
 #import "MGLGeometry.h"
 
@@ -47,7 +48,7 @@ NS_ASSUME_NONNULL_BEGIN
  @note You are responsible for getting permission to use the map data and for
     ensuring that your use adheres to the relevant terms of use.
  */
-IB_DESIGNABLE
+MGL_EXPORT IB_DESIGNABLE
 @interface MGLMapView : NSView
 
 #pragma mark Creating Instances

platform/macos/src/Mapbox.h

@@ -1,10 +1,12 @@
 #import <Cocoa/Cocoa.h>
 
+#import "MGLFoundation.h"
+
 /// Project version number for Mapbox.
-FOUNDATION_EXPORT double MapboxVersionNumber;
+FOUNDATION_EXPORT MGL_EXPORT double MapboxVersionNumber;
 
 /// Project version string for Mapbox.
-FOUNDATION_EXPORT const unsigned char MapboxVersionString[];
+FOUNDATION_EXPORT MGL_EXPORT const unsigned char MapboxVersionString[];
 
 #import "MGLAccountManager.h"
 #import "MGLAnnotation.h"