cocos2d-x 集成 opencv 库遇到的链接问题

参考：https://blog.csdn.net/chuanli5157/article/details/100755440

遇到以下的链接错误，原因是opencv 库和 libcocos2diOS.a 的填写顺序问题，

libcocos2diOS.a 需要些在opencv库之前

在project build Setting 中，

修改other linker Flags

 -force_load $(BUILD_DIR)/$(CONFIGURATION)$(EFFECTIVE_PLATFORM_NAME)/libcocos2d\ iOS.a  -framework "opencv2"

Undefined symbols for architecture arm64:

  "_VP8LVectorMismatch", referenced from:

      _VP8LHashChainFill in opencv2(backward_references_enc.o)

      _VP8LGetBackwardReferences in opencv2(backward_references_enc.o)

  "_WebPSharpYUVFilterRow", referenced from:

      _ImportYUVAFromRGBA in opencv2(picture_csp_enc.o)

  "_WebPSharpYUVUpdateY", referenced from:

      _ImportYUVAFromRGBA in opencv2(picture_csp_enc.o)

  "_WebPHasAlpha32b", referenced from:

      _WebPPictureHasTransparency in opencv2(picture_csp_enc.o)

      _ImportYUVAFromRGBA in opencv2(picture_csp_enc.o)

  "_WebPSharpYUVUpdateRGB", referenced from:

      _ImportYUVAFromRGBA in opencv2(picture_csp_enc.o)

  "_WebPPackRGB", referenced from:

      _WebPPictureImportBGR in opencv2(picture_csp_enc.o)

  "_WebPHasAlpha8b", referenced from:

      _WebPPictureHasTransparency in opencv2(picture_csp_enc.o)

      _ImportYUVAFromRGBA in opencv2(picture_csp_enc.o)

  "_WebPExtractGreen", referenced from:

      _ExtractAlphaRows in opencv2(vp8l_dec.o)

ld: symbol(s) not found for architecture arm64

clang: error: linker command failed with exit code 1 (use -v to see invocation)