_OBJC_CLASS_$_PINWebPAnimatedImage solution

[BannaGo]

#define PIN_WEBP 1
but occur this error:
Undefined symbols for architecture x86_64:
"OBJC_CLASS$_PINWebPAnimatedImage", referenced from:
objc-class-ref in libXXX.a(PINCachedAnimatedImage.o)
ld: symbol(s) not found for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)

I checked this file PINWebPAnimatedImage.m, the reason is “#import "PINWebPAnimatedImage.h" should not be in #if PIN_WEBP #endif.