[resend] Allow use of MAP_TRYFIXED for better mmap()
jon at siliconcircus.com
Thu Aug 28 05:04:50 CDT 2003
Huw D M Davies wrote:
> It's available on the machine that the binary is compiled on sure, but
> what about the machine of a friend/customer who you've shipped the
> binary to? Just because you have the new kernel feature on your build
> machine doesn't mean that everybody else does. If you test at
> run-time you avoid these problems.
I believe Todd's point is that the build he's compiling won't work with
any libc/kernel combination older than the one he's building with
*anyway*. So for NetBSD, there'll be a build built on an ancient
machine, which will work pretty much everywhere and a build built on a
newish machine, which will have this define. If <random-NetBSD-Box> can
run Todd's binary *at all*, then it's also guaranteed to have the
facility his define's checking for.
Silicon Circus Ltd.
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