On 15 Dec 2020, at 23:25, John Baldwin <[email protected]> wrote:
> On 12/15/20 9:44 AM, Ed Maste wrote:
>> Author: emaste
>> Date: Tue Dec 15 17:44:19 2020
>> New Revision: 368667
>> URL: https://svnweb.freebsd.org/changeset/base/368667
>>
>> Log:
>> Retire obsolete GDB 6.1.1
>>
>> GDB 6.1.1 was released in June 2004 and is long obsolete. It does not
>> support all of the architectures that FreeBSD does, and imposes
>> limitations on the FreeBSD kernel build, such as the continued use of
>> DWARF2 debugging information.
>>
>> It was kept (in /usr/libexec/) only for use by crashinfo(8), which
>> extracts some basic information from a kernel core dump after a crash.
>> Crashinfo already prefers gdb from port/package if installed.
>>
>> Future work may add kernel debug support to LLDB or find another path
>> for crashinfo's needs, but in any case we do not want to ship the
>> excessively outdated GDB in FreeBSD 13.
>>
>> Sponsored by: The FreeBSD Foundation
>> Differential Revision: https://reviews.freebsd.org/D27610
>
> Are you going to remove the -gdwarf-2 bits from kern.mk now?
>
> (Does ctfconvert support newer DWARF?)
cddl/contrib/opensolaris/tools/ctf/cvt/dwarf.c:1964-1968:
debug(1, "DWARF version: %d\n", vers);
if (vers < 2 || vers > 4) {
terminate("file contains incompatible version %d DWARF code "
"(version 2, 3 or 4 required)\n", vers);
}
(since r261025)
Though that doesn't mean it works...
Jess
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