'strcpy': This function or variable may be unsafe. Consider using strcpy_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details.

'=': conversion from 'wchar_t' to 'char', possible loss of data

'initializing': conversion from 'size_t' to 'int', possible loss of data

'initializing': conversion from 'size_t' to 'const int', possible loss of data

'initializing': conversion from 'size_t' to 'int', possible loss of data

'initializing': conversion from 'size_t' to 'const int', possible loss of data

'argument': conversion from 'size_t' to 'int', possible loss of data

'argument': conversion from 'size_t' to 'int', possible loss of data

'argument': conversion from 'size_t' to 'int', possible loss of data

'argument': conversion from 'size_t' to 'int', possible loss of data

eigen3's buildsystem uses very long paths and may fail on your system.