objc_library deps swift_library failed

[endpress]

I write a swift_library

swift_library(
    name = "hello",
    srcs = ["Sources/Hello.swift"],
)

and a objc_library deps it.

objc_library(
    name = "Sources",
    srcs = [
        "Sources/AppDelegate.h",
        "Sources/AppDelegate.m",
        "Sources/main.m",
    ],
    resources = [
        "Resources/Main.storyboard",
    ],
    deps = [":hello"],
)

but swift_library generate a empty hello-Swift.h file

// Generated by Apple Swift version 3.1 effective-3 (swiftlang-802.0.53 clang-802.0.42)
#pragma clang diagnostic push

#if defined(__has_include) && __has_include(<swift/objc-prologue.h>)
# include <swift/objc-prologue.h>
#endif

#pragma clang diagnostic ignored "-Wauto-import"
#include <objc/NSObject.h>
#include <stdint.h>
#include <stddef.h>
#include <stdbool.h>

#if !defined(SWIFT_TYPEDEFS)
# define SWIFT_TYPEDEFS 1
# if defined(__has_include) && __has_include(<uchar.h>)
#  include <uchar.h>
# elif !defined(__cplusplus) || __cplusplus < 201103L
typedef uint_least16_t char16_t;
typedef uint_least32_t char32_t;
# endif
typedef float swift_float2  __attribute__((__ext_vector_type__(2)));
typedef float swift_float3  __attribute__((__ext_vector_type__(3)));
typedef float swift_float4  __attribute__((__ext_vector_type__(4)));
typedef double swift_double2  __attribute__((__ext_vector_type__(2)));
typedef double swift_double3  __attribute__((__ext_vector_type__(3)));
typedef double swift_double4  __attribute__((__ext_vector_type__(4)));
typedef int swift_int2  __attribute__((__ext_vector_type__(2)));
typedef int swift_int3  __attribute__((__ext_vector_type__(3)));
typedef int swift_int4  __attribute__((__ext_vector_type__(4)));
typedef unsigned int swift_uint2  __attribute__((__ext_vector_type__(2)));
typedef unsigned int swift_uint3  __attribute__((__ext_vector_type__(3)));
typedef unsigned int swift_uint4  __attribute__((__ext_vector_type__(4)));
#endif

#if !defined(SWIFT_PASTE)
# define SWIFT_PASTE_HELPER(x, y) x##y
# define SWIFT_PASTE(x, y) SWIFT_PASTE_HELPER(x, y)
#endif
#if !defined(SWIFT_METATYPE)
# define SWIFT_METATYPE(X) Class
#endif
#if !defined(SWIFT_CLASS_PROPERTY)
# if __has_feature(objc_class_property)
#  define SWIFT_CLASS_PROPERTY(...) __VA_ARGS__
# else
#  define SWIFT_CLASS_PROPERTY(...)
# endif
#endif

#if defined(__has_attribute) && __has_attribute(objc_runtime_name)
# define SWIFT_RUNTIME_NAME(X) __attribute__((objc_runtime_name(X)))
#else
# define SWIFT_RUNTIME_NAME(X)
#endif
#if defined(__has_attribute) && __has_attribute(swift_name)
# define SWIFT_COMPILE_NAME(X) __attribute__((swift_name(X)))
#else
# define SWIFT_COMPILE_NAME(X)
#endif
#if defined(__has_attribute) && __has_attribute(objc_method_family)
# define SWIFT_METHOD_FAMILY(X) __attribute__((objc_method_family(X)))
#else
# define SWIFT_METHOD_FAMILY(X)
#endif
#if defined(__has_attribute) && __has_attribute(noescape)
# define SWIFT_NOESCAPE __attribute__((noescape))
#else
# define SWIFT_NOESCAPE
#endif
#if defined(__has_attribute) && __has_attribute(warn_unused_result)
# define SWIFT_WARN_UNUSED_RESULT __attribute__((warn_unused_result))
#else
# define SWIFT_WARN_UNUSED_RESULT
#endif
#if !defined(SWIFT_CLASS_EXTRA)
# define SWIFT_CLASS_EXTRA
#endif
#if !defined(SWIFT_PROTOCOL_EXTRA)
# define SWIFT_PROTOCOL_EXTRA
#endif
#if !defined(SWIFT_ENUM_EXTRA)
# define SWIFT_ENUM_EXTRA
#endif
#if !defined(SWIFT_CLASS)
# if defined(__has_attribute) && __has_attribute(objc_subclassing_restricted)
#  define SWIFT_CLASS(SWIFT_NAME) SWIFT_RUNTIME_NAME(SWIFT_NAME) __attribute__((objc_subclassing_restricted)) SWIFT_CLASS_EXTRA
#  define SWIFT_CLASS_NAMED(SWIFT_NAME) __attribute__((objc_subclassing_restricted)) SWIFT_COMPILE_NAME(SWIFT_NAME) SWIFT_CLASS_EXTRA
# else
#  define SWIFT_CLASS(SWIFT_NAME) SWIFT_RUNTIME_NAME(SWIFT_NAME) SWIFT_CLASS_EXTRA
#  define SWIFT_CLASS_NAMED(SWIFT_NAME) SWIFT_COMPILE_NAME(SWIFT_NAME) SWIFT_CLASS_EXTRA
# endif
#endif

#if !defined(SWIFT_PROTOCOL)
# define SWIFT_PROTOCOL(SWIFT_NAME) SWIFT_RUNTIME_NAME(SWIFT_NAME) SWIFT_PROTOCOL_EXTRA
# define SWIFT_PROTOCOL_NAMED(SWIFT_NAME) SWIFT_COMPILE_NAME(SWIFT_NAME) SWIFT_PROTOCOL_EXTRA
#endif

#if !defined(SWIFT_EXTENSION)
# define SWIFT_EXTENSION(M) SWIFT_PASTE(M##_Swift_, __LINE__)
#endif

#if !defined(OBJC_DESIGNATED_INITIALIZER)
# if defined(__has_attribute) && __has_attribute(objc_designated_initializer)
#  define OBJC_DESIGNATED_INITIALIZER __attribute__((objc_designated_initializer))
# else
#  define OBJC_DESIGNATED_INITIALIZER
# endif
#endif
#if !defined(SWIFT_ENUM)
# define SWIFT_ENUM(_type, _name) enum _name : _type _name; enum SWIFT_ENUM_EXTRA _name : _type
# if defined(__has_feature) && __has_feature(generalized_swift_name)
#  define SWIFT_ENUM_NAMED(_type, _name, SWIFT_NAME) enum _name : _type _name SWIFT_COMPILE_NAME(SWIFT_NAME); enum SWIFT_COMPILE_NAME(SWIFT_NAME) SWIFT_ENUM_EXTRA _name : _type
# else
#  define SWIFT_ENUM_NAMED(_type, _name, SWIFT_NAME) SWIFT_ENUM(_type, _name)
# endif
#endif
#if !defined(SWIFT_UNAVAILABLE)
# define SWIFT_UNAVAILABLE __attribute__((unavailable))
#endif
#if !defined(SWIFT_UNAVAILABLE_MSG)
# define SWIFT_UNAVAILABLE_MSG(msg) __attribute__((unavailable(msg)))
#endif
#if !defined(SWIFT_AVAILABILITY)
# define SWIFT_AVAILABILITY(plat, ...) __attribute__((availability(plat, __VA_ARGS__)))
#endif
#if !defined(SWIFT_DEPRECATED)
# define SWIFT_DEPRECATED __attribute__((deprecated))
#endif
#if !defined(SWIFT_DEPRECATED_MSG)
# define SWIFT_DEPRECATED_MSG(...) __attribute__((deprecated(__VA_ARGS__)))
#endif
#if defined(__has_feature) && __has_feature(modules)
#endif

#pragma clang diagnostic ignored "-Wproperty-attribute-mismatch"
#pragma clang diagnostic ignored "-Wduplicate-method-arg"
#pragma clang diagnostic pop

my hello.swift

import UIKit
@objc
class SwiftHello: NSObject {
    func hello() {
        print("Hello from swift")
    }
}

my AppDelegate.m

#import "examples/ios/HelloWorld/Sources/AppDelegate.h"

#import "examples/ios/HelloWorld/hello-Swift.h"

@implementation AppDelegate

- (BOOL)application:(UIApplication *)application
    didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
    
    SwiftHello *hello = [[SwiftHello alloc] init];
    [hello hello];
    
  return YES;
}

@end

error is

ERROR: /Users/abc/Downloads/rules_apple-master/examples/ios/HelloWorld/BUILD:8:1: null failed: Process exited with status 1 [sandboxed].
examples/ios/HelloWorld/Sources/AppDelegate.m:24:5: error: use of undeclared identifier 'SwiftHello'
    SwiftHello *hello = [[SwiftHello alloc] init];
    ^

[dmishe]

In addition to @objc, you need to make the symbols you want to use from Objective-C public.

[endpress]

@dmishe thank you very much. It works. But I cann't change all my swift class to public for some reason. If I have another way to use swift in Objective-C