Chromium iOS build using third-party framework (generated by Kotlin)

[Hung Le]

Hi,

I am building an iOS framework using Kotlin Multiplatform Library.  I used the following Kotlin tutorial as a guide: https://kotlinlang.org/docs/tutorials/native/apple-framework.html

The resulted framework's header file was generated and contained many "@end;". Note the trailing semicolon.

For example:

__attribute__((swift_name("KotlinInt")))
@interface AuthyInt : AuthyNumber
- (instancetype)initWithInt:(int)value;
+ (instancetype)numberWithInt:(int)value;
@end;

The build failed and showed the following errors:

error: unknown attribute 'swift_name' ignored [-Werror,-Wunknown-attributes]
__attribute__((swift_name("KotlinInt")))


error: extra ';' outside of a function is incompatible with C++98 [-Werror,-Wc++98-compat-extra-semi]
@end;
    ^

The Kotlin tutorial also displays the similar annotation in its header file, so I believe it's how Kotlin generates it.

I would appreciate any suggestion of how to handle this scenario.  Maybe a tweak in the C++ build config?

Thanks!

[Takuto Ikuta]

see https://groups.google.com/a/chromium.org/forum/#!topic/clang/oiG32CI5Re0

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[Avi Drissman]

Indeed.

If Kotlin is generating Objective-C code like this, it is wrong. @end should *not* have a semicolon, and they are wrong to generate it. Please file a bug with them to fix it.

The bit about the "swift_name" attribute, I dunno.

Avi

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