编译emule 源代码error C2520: conversion from unsigned __int64 to double not implemented 安装VS6SP5+VCPP5解决问题

编译emule 源代码时候，编译所需的库cryptopp521，下列语句报错

 return (double)t * unitsPerSecondTable[unit] / TicksPerSecond();

error C2520: conversion from unsigned __int64 to double not implemented

先安装VS6SP5

http://download.microsoft.com/download/vstudio60ent/SP5/Wideband-Full/WIN98Me/EN-US/VS6sp5.exehttp://download.microsoft.com/download/vstudio60ent/SP5/Wideband-Full/WIN98Me/EN-US/VS6sp5.exe

然后安装VCPP5

http://download.microsoft.com/download/vb60ent/update/6/w9x2kxp/en-us/vcpp5.exe

后解决问题，编译成功