On 01/09/2019 12:32 AM, Ken Moffat via lfs-dev wrote:
On Wed, Jan 09, 2019 at 04:57:28AM +0000, Ken Moffat via lfs-dev wrote:On Tue, Jan 08, 2019 at 10:36:22PM -0500, Jean-Marc Pigeon via lfs-dev wrote:Please could you confirm you were successful to compile the Kernel because CONFIG_DEBUG_INFO is NOT set. within .config file.Sure, that is indeed not set. Help text from https://cateee.net/lkddb/web-lkddb/DEBUG_INFO.html If you say Y here the resulting kernel image will include debugging info resulting in a larger kernel image. This adds debug symbols to the kernel and modules (gcc -g), and is needed if you intend to use kernel crashdump or binary object tools like crash, kgdb, LKCD, gdb, etc on the kernel. Say Y here only if you plan to debug the kernel. If unsure, say N.As far as I know, no current kernel developers use LFS so there is no need to run 'make allmodconfig' or 'make allyesconfig'. But if anybody does have a reason to make either of those targets, adding the patch Jean-Marc pointed to (or using a git version of binutils if it doesn't apply to the last release) should be within their abilities. For more general kernel debugging (and few of us here ever seem to have to do that), 'git bisect' is a more general tool for debugging which commit broke a use-case (or a build). Sure, tools like crash and kgdb can be as much fun as any other tool, but most of us do not need them. ĸen
So, I have redone the chapter 6 again, using elfutils-0.175 Trouble with Kernel objdump show up (as expected). As expected too, objdump is complaining about some standard libraries from /usr/lib objdump -f *.so | grep recogni objdump: libc.so: file format not recognized objdump: libform.so: file format not recognized objdump: libgcc_s.so: file format not recognized objdump: libm.so: file format not recognized objdump: libmenu.so: file format not recognized objdump: libncurses.so: file format not recognized objdump: libpanel.so: file format not recognize I extracted the git and generated a binutils from tag 2018-12-23 09:51:55 +0400 (tag: gdb-8.2.1-release) which should include objdump/elfutils bug fix. New objdump still complaining about standard libraries. My guess is we need to do chapter5+6 with this new binutil. I do not like this.., this "malfunction" is deeply entrenched within core. So, I decided not to go elfutils.0.175 and keep 0.173 for our next release and wait for a binutils new release (elfutils compatible). My advice to LFS, revert for 0.175 to 0.173 for release 8.4. -- A bientôt =========================================================== Jean-Marc Pigeon E-Mail: [email protected] SAFE Inc. Phone: (514) 493-4280 Clement, 'a kiss solution' to get rid of SPAM (at last) Clement' Home base <"http://www.clement.safe.ca";> ===========================================================
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