warning: implicit conversion loses integer precision: 'const size_t' (aka 'const unsigned long') to 'int' [-Wshorten-64-to-32]
In Xcode Implicit conversion loses integer precision warnings, by setting Implicit Conversion to 32 Bit Type to No in the project's build settings.
faiss-mobile/faiss/faiss/utils/simdlib_emulated.h:127:20: warning: 'sprintf' is deprecated: This function is provided for compatibility reasons only. Due to security concerns inherent in the design of sprintf(3), it is highly recommended that you use snprintf(3) instead. [-Wdeprecated-declarations]
ptr += sprintf(ptr, fmt, u16[i]);
Solution is to use -Wno-deprecated-declarations flag.