Xcode解決「Implicit declaration of function 'XXX' is invalid in C99」 警告或報錯

1.Build Setting>>>C Language Dialect,而後選擇GNU99[-std=gnu99] (選擇看項目實際要求)。 2.Build Setting>>>Architectures>>>Vaild Architectures,而後把arm64和armv7s去掉。 3.Build Setting>>>Architectures>>>Build Active Architec

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