Date: Wed, 26 Mar 2003 16:25:53 -0600 From: Dan Nelson <dnelson@allantgroup.com> To: taxman <taxman@ACD.NET> Cc: FreeBSD Questions <freebsd-questions@freebsd.org> Subject: Re: How to produce debugging symbols? Message-ID: <20030326222553.GA38860@dan.emsphone.com> In-Reply-To: <200303261710.11281.taxman@acd.net> References: <20030326200449.GB967@bsdsi.homeunix.com> <20030326201149.GE31787@dan.emsphone.com> <200303261710.11281.taxman@acd.net>
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In the last episode (Mar 26), taxman said: > On Wednesday 26 March 2003 03:11 pm, Dan Nelson wrote: > > If it's your program, recompile and link with the -g commandline > > switch added. If it's a base FreeBSD program (or port), edit the > > Makefile and add a line reading "DEBUG_FLAGS=-g" (this will compile > > with -g and also no strip the debugging symbols when the binary > > gets installed). > > Does this work for the kernel? I'd read that the kernel strips > symbols anyway. If i put makeoptions DEBUG=-g in my kernel config > (as shown in LINT) will I still get the symbols? Thats for 4.x, what > about 5.0 is that different? It still works in 5.0. What ends up happenning is a debugging kernel gets built as kernel.debug, but the stripped version is still installed into /boot/kernel/ (most likely to conserve space on /). When you panic and coredump, copy kernel.debug out of the source tree into /var/crash and use that to debug. -- Dan Nelson dnelson@allantgroup.com
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