make delete-old

[Yuri Pankov]

On 03.03.2020 18:07, Polytropon wrote:
> On Tue, 3 Mar 2020 17:13:50 +0300, Yuri Pankov wrote:
>> On 03.03.2020 16:07, Robert Huff wrote:
>>> tech-lists writes:
>>>
>>>>    Is a reboot required after make delete-old ?
>>>
>>> 	I don't think so.
>>> 	But you might want to re-run ldconfig.
>>
>> I don't think delete-old deletes shared libraries (and that's the answer
>> for original question, you don't need to reboot), there's
>> delete-old-libs for that, more so, running ldconfig (the binary) can be
>> harmful, if needed there's a ldconfig service; not sure which one you meant.
> 
> According to /usr/src/Makefile's comment header, the
> step "make delete-old" is followed by a reboot (in
> combination with the 2nd mergemaster run, after
> "make installworld"), while "make delete-old-libs"
> is performed after the reboot, without a further one.
> 
> In /usr/src/Makefile, you can find the following order:
> 
> # For individuals wanting to upgrade their sources (even if only a
> # delta of a few days):
> #
> #  1.  `cd /usr/src'       (or to the directory containing your source tree).
> #  2.  `make buildworld'
> #  3.  `make buildkernel KERNCONF=YOUR_KERNEL_HERE'     (default is GENERIC).
> #  4.  `make installkernel KERNCONF=YOUR_KERNEL_HERE'   (default is GENERIC).
> #       [steps 3. & 4. can be combined by using the "kernel" target]
> #  5.  `reboot'        (in single user mode: boot -s from the loader prompt).
> #  6.  `mergemaster -p'
> #  7.  `make installworld'
> #  8.  `mergemaster'            (you may wish to use -i, along with -U or -F).
> #  9.  `make delete-old'
> # 10.  `reboot'
> # 11.  `make delete-old-libs' (in case no 3rd party program uses them anymore)
> 
> Additional information from "man 7 build":
> 
>       delete-old	      Delete obsolete base system files	and directories	inter-
> 		      actively.	 When -DBATCH_DELETE_OLD_FILES is specified at
> 		      the command line,	the delete operation will be non-in-
> 		      teractive.  The variables	DESTDIR, TARGET_ARCH and
> 		      TARGET should be set as with "make installworld".
> 
>       delete-old-libs  Delete obsolete base system libraries interactively.
> 		      This target should only be used if no third party	soft-
> 		      ware uses	these libraries.  When
> 		      -DBATCH_DELETE_OLD_FILES is specified at the command
> 		      line, the	delete operation will be non-interactive.  The
> 		      variables	DESTDIR, TARGET_ARCH and TARGET	should be set
> 		      as with "make installworld".
> 
> To conclude this into an answer that matches existing
> documentation:
> 
> Yes, "make delete-old" requires a reboot. :-)

It's the 'installworld' (7) and 'mergemaster' (8) steps that require a 
reboot, and 'delete-old' (9) being immediately followed by 'reboot' (10) 
step does NOT mean 'delete-old' requires 'reboot'.  You can actually 
skip the step 9, as steps 7 and 8 are what already made the files 
obsolete, and the only problem (that I can think of) from skipping is 
obsolete header files picked up when compiling, and removing those 
doesn't require a reboot.