error: linker command failed with exit code 1

[ChinaiOS]

After the addition, the following questions arise: ld: 1 duplicate symbol for architecture x86_64 clang: error: linker command failed with exit code 1 (use -v to see invocation)

[Easyzhan]

same as

[kkkelicheng]

add typedef

typedef NS_ENUM(NSUInteger, KNSemiModalTransitionStyle) { KNSemiModalTransitionStyleSlideUp, KNSemiModalTransitionStyleFadeInOut, KNSemiModalTransitionStyleFadeIn, KNSemiModalTransitionStyleFadeOut, };

[jesseteal]

Thank you @kkkelicheng . I just had to update some ancient code for iPhone X and this saved me.