I am aware that I can use __FreeBSD__
to detect the operating system, but how do I detect the version of the operating system?
My requirement is to detect whether copy_file_range()
function is available, which according to FreeBSD's man page appeared in FreeBSD 13.0.
According to this page, the macro __FreeBSD_version
is defined in <sys/param.h>
that contains the value of the current operating system version.