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On Thu, Oct 08, 2020 at 06:50:16PM -0400, John Covici wrote: |
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> Since I compile most packages with split-debug and my default flags |
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> contain -gdb, could I use the existing packages? |
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LOL, I feel like I might have overcomplicated that. ;-) |
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I'm not sure if it will keep as many symbols as `-ggdb3`, but you probably don't |
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need that many anyway. Remember to enable the `splitdebug` and `installsources` |
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FEATURES on both packages. Following the Gentoo guide [1]: |
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|
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/etc/portage/ $ cat env/debugsyms env/installsources |
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CFLAGS="${CFLAGS} -ggdb" |
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CXXFLAGS="${CXXFLAGS} -ggdb" |
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FEATURES="${FEATURES} splitdebug compressdebug nostrip" |
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FEATURES="${FEATURES} installsources" |
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|
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/etc/portage/ $ cat package.env/sys-apps/kpci |
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sys-apps/kmod debugsyms installsources |
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sys-apps/pciutils debugsyms installsources |
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|
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$ emerge -atv1 kmod pciutils |
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|
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I'm not sure what you mean by "my default flags contain -gdb". Are these your |
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CFLAGS (in which case I think you mean `-ggdb`), or is it some USE-flag or |
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FEATURE of which I'm unaware? |
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Anyway, then you should be able to break at the same function as before, using |
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the globally installed version of `lspci`: |
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|
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$ gdb lspci |
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Reading symbols from lspci... |
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(gdb) b index_mm_open |
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Function "index_mm_open" not defined. |
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Make breakpoint pending on future shared library load? (y or [n]) y |
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Breakpoint 1 (index_mm_open) pending. |
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(gdb) run -k |
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Starting program: /usr/sbin/lspci -k |
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|
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[...] |
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|
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Breakpoint 1, index_mm_open (ctx=ctx@entry=0x555555570b30, |
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filename=filename@entry=0x7fffffffc9a0 |
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"/lib/modules/5.4.60-gentoo/modules.dep.bin", |
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stamp=stamp@entry=0x555555570b90) at |
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/usr/src/debug/sys-apps/kmod-27-r2/kmod-27/libkmod/libkmod-index.c |
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:744 |
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Cheers for pointing this out. I'm still not completely accustomed to using Linux |
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with a _good_ package manager. ;-) |
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[1] https://wiki.gentoo.org/wiki/Debugging#Install_debugging_information |
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-- |
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|
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Ashley Dixon |
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suugaku.co.uk |
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|
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2A9A 4117 |
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DA96 D18A |
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8A7B B0D2 |
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A30E BF25 |
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F290 A8AA |
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