Date: Mon, 22 Nov 2010 15:16:36 -0500 From: Weihang Wang <weihang@vt.edu> To: Dan Nelson <dnelson@allantgroup.com> Cc: freebsd-questions@freebsd.org Subject: Re: Got an error: Unknown option "DDB_CTF" Message-ID: <B21BB9CA-D6E6-4F80-9021-940BA0B07497@vt.edu> In-Reply-To: <20101122170806.GA58734@dan.emsphone.com> References: <CB053608-596F-4326-81AF-1905DDFABBBC@vt.edu> <20101122170806.GA58734@dan.emsphone.com>
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Hi, Thank you so much for your help. But I am still concerned about the = backward compatibility.=20 First I have to use DTrace to instrument the kernel to do performance = analysis. At the same time, the program I need to build on the FreeBSD = is a kind of transport protocol, which is based on the FreeBSD 6.0. The = transport protocol may change the network stack of the kernel networking = system, so I do not know whether this would work. Hope to hear from you. Thank you very much. Best, W.Wang On Nov 22, 2010, at 12:08 PM, Dan Nelson wrote: > In the last episode (Nov 22), Weihang Wang said: >> I am a totally newbie to FreeBSD. I am building a custom kernel based = on >> FreeBSD 6.0 kernel (I have to use this version cause I need to run an >> application which is only available for FreeBSD 6.0). I conform to = the >> handbook to add the following lines in kernel configuration file to = enable >> DTrace support: >>=20 >> options KDTRACE_FRAME >> options KDTRACE_HOOKS >> options DDB_CTF >> makeoptions WITH_CTF=3D1 >>=20 >> Then I use the following commands to recompile my kernel and install = this >> new kernel: >>=20 >> make buildkernel KERNCONF=3DKERNELNAME >> make installkernel KERNCONF=3DKERNELNAME >>=20 >> The compiling process encounters an error: Unknown option "DDB_CTF", = I >> have no idea how to fix this? >=20 > Just remove all references to CTF; that's for Dtrace support, which = doesn't > exist in the 6.* branch. >=20 > You might also want to try running your application on FreeBSD 8.1 = after > installing the misc/compat6x package. Backwards binary compatibility > support is very good. >=20 > --=20 > Dan Nelson > dnelson@allantgroup.com > _______________________________________________ > freebsd-questions@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-questions > To unsubscribe, send any mail to = "freebsd-questions-unsubscribe@freebsd.org"
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