iOS Undefined symbol: _vvexpf 报错

导入 Accelerate.framework

Undefined symbol: _vvexpf

Undefined symbol: _vDSP_sve

Undefined symbol: _vDSP_dotpr

Undefined symbol: _vDSP_vsdiv

Undefined symbol: _vDSP_maxv

Undefined symbol: _vDSP_mmul

Undefined symbol: _vDSP_vclip

Undefined symbol: _vDSP_vsadd

接入facebook登录时遇到的问题