Fix build on FreeBSD
Fix build on FreeBSD

8l/libmill,lsm/libmill,sustrik/libmill,reqshark/libmill,linearregression/libmill,reqshark/libmill,lsm/libmill,jimjag/mill,jimjag/mill,ebfe/libmill,dailypips/libmill,nirs/libmill,reqshark/libmill,linearregression/libmill,sustrik/libmill,lsm/libmill,sustrik/libmill,jimjag/mill,linearregression/libmill,8l/libmill,dailypips/libmill,ebfe/libmill,ebfe/libmill,nirs/libmill,dailypips/libmill