Re: Where is the eln search path defined

[Andrea Corallo <akrl@sdf.org>]

Alex Bennée <alex.bennee@linaro.org> writes:

> Andrea Corallo <akrl@sdf.org> writes:
>
>> Alex Bennée <alex.bennee@linaro.org> writes:
>>
>>> Hi,
>>>
>>> I thought it was about time I started getting the native-comp branch
>>> running on some of my aarch64 machines. The bionic version of libgccjit
>>> for aarch64 failed so I ended up having to build the latest from master
>>> and adding it to the search path.
>>>
>>> Emacs seems to have built fine but when I run it I get:
>>>
>>>   08:41:58 [alex@qemu-test:~/s/emacs] $ emacs -nw
>>>   emacs: /usr/bin/../lisp/eln-aarch64-unknown-linux-gnu-e59b16aa72ffe0cd/custom.eln: cannot open shared object file: No such file or directory
> <snip>
>>> Any pointers?
>>
>> Hi Alex,
>>
>> Emacs thinks the binary is installed in '/usr/bin/' and the relative path
>> to find the eln from there is expected to be
>> '../lisp/eln-aarch64-unknown-linux-gnu-e59b16aa72ffe0cd/custom.eln'.
>
> Hmm it was configured:
>
>   ./configure --prefix=/home/alex/src/emacs/install \
>               --with-x-toolkit=no --with-modules \
>               --with-nativecomp --with-xpm=ifavailable \
>               --with-gif=ifavailable --with-tiff=ifavailable

Mmh I see.  Would be interesting if you could check the DESTDIR value
(if any) in your build environment.

>> I believe of the two information the first is wrong in this case.  This
>> is coming from the DESTDIR value while compiling.  Is it possible that
>> Emacs was compiled with a certain DESTDIR value and then installed using
>> a different one?
>
> I can't quite follow where the automake magic sets DESTDIR but in the
> main Makefile I certainly have:
>
>   # The default location for installation.  Everything is placed in
>   # subdirectories of this directory.  The default values for many of
>   # the variables below are expressed in terms of this one, so you may
>   # not need to change them.  This defaults to /usr/local.
>   prefix=/home/alex/src/emacs/install
>
> Where is DESTDIR defined during the build?

That is a very good question.

>> This would explain even if I understand this is really not ideal.
>>
>>   Andrea

-- 
akrl@sdf.org