Re: Odd stoppage in buildworld

On 7/6/26 10:08, bob prohaska wrote:
> On Sun, Jul 05, 2026 at 07:03:03PM -0700, Mark Millard wrote:
>> On 7/5/26 17:32, bob prohaska wrote:
>>> A Pi2 (armv7) is stopping meta-mode buildworld in -current, reporting
>>>
>>> ...
>>> Building /usr/obj/usr/src/arm.armv7/tmp/obj-tools/lib/clang/libllvm/libllvm.a
>>
>> arm.armv7/tmp/obj-tools/lib/clang/libllvm/ indicates that it was
>> building the bootstrap toolchain.
>>
>> arm.armv7/lib/clang/libllvm/ is where it would be for the normal
>> toolchain build building.
>>
>> Is this build the one that switches from llvm19 to llvm21 based?
>>
>>> Building static llvm library
>>
>> As I understand, the defaults are now:
>>
>> ) the bootstrap toolchain is built statically linked
>>
>> ) the normal toolchain is built dynamically linked.
>>
>> (I override that last for my contexts.)
>>
>>> ar: error: libllvm.a: 'InstrProfWriter.o': section header table goes past the end of the file: e_shoff = 0xc6c24
>>> *** [libllvm.a] Error code 1
>>
>> It would be good to see the ar command that produced that message. At
>> this point there is some guess work in expecting that it was generating
>> libllvm.a instead of using it.
>>
>> The related paths may not be obvious :
>>
>> tmp/obj-tools/lib/clang/libllvm/ProfileData_InstrProfWriter.o.meta
>> tmp/obj-tools/lib/clang/libllvm/ProfileData/InstrProfWriter.o
>>
>> Note the _ vs. / before InstrProfWriter.o* .
>>
> 
> I didn't catch that. Find / locates only a single file: 
> 
> -rw-r--r--  1 root wheel 393216 Jul  4 10:27 /usr/obj/usr/src/arm.armv7/tmp/obj-tools/lib/clang/libllvm/ProfileData/InstrProfWriter.o

Note the /libllvm/ above that I reference below.

> 
> 
>> Have the two *InstrProfWriter.o* been regenerated (new modification
>> date)? What about the pair of files (no ProfileData directory involved):
>>
>> tmp/obj-tools/lib/clang/libllvm/libllvm.a
>> tmp/obj-tools/lib/clang/libllvm/libllvm.a.meta
> 
> After the latest buildworld attempt (following the various clean make clean
> options) a find / -name libllvm discovers no files by that name.

Unsure of your intent here. Was it:

# find / -name libllvm.a\* -print

?

You already listed a path with a /libllvm/ in it above. The "-name
libllvm" usage would match that.

> 
>>
>> Does tmp/obj-tools/lib/clang/libllvm/libllvm.a contain a copy of
>> InstrProfWriter.o ?
> 
> Seemingly yes, but only under ...ProfileData/

.a files are archives that contain copies of other files, such as copies
of .o files. They are not directories of themselves.

> 
> As an aside, I tried running make kernel-toolchain, it too failed
> promptly with the same error. 
> 
> Thanks for writing!
> 
> bob prohaska
> 
> 
> 


-- 
===
Mark Millard
marklmi at yahoo.com