Date: Mon, 22 Nov 2010 09:46:36 -0500 From: Weihang Wang <weihang@vt.edu> To: freebsd-questions@freebsd.org Subject: Got an error: Unknown option "DDB_CTF" Message-ID: <CB053608-596F-4326-81AF-1905DDFABBBC@vt.edu>
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Hi all, 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: options KDTRACE_FRAME options KDTRACE_HOOKS options DDB_CTF makeoptions WITH_CTF=1 Then I use the following commands to recompile my kernel and install this new kernel: make buildkernel KERNCONF=KERNELNAME make installkernel KERNCONF=KERNELNAME The compiling process encounters an error: Unknown option "DDB_CTF", I have no idea how to fix this? Could anyone help me to see why this happens?? Thanks in advance. Best, W. Wang
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