Determine if a kernel is built with a specific option?
eugen at kuzbass.ru
Mon Jan 12 06:51:34 PST 2009
> I was wondering how a autoconf configure script can determine if the
> kernel is built with a particular option. In this case the code I have
> can make use of the FreeBSD polling driver, which by default isn't
> built into a kernel. So I want my configure script to determine if the
> kernel supports it, if so sets a #define, otherwise doesn't.
You should not assume that compiled code does not need polling support
just because _buildbox_ doesn't have it enabled in time of build.
If the code builds here, it does not mean it will run here.
More information about the freebsd-hackers