Re: Native Compile: Example Of Possibly Spurious Warning

[T.V Raman]

"T.V Raman" <raman@google.com> writes:

So I created myself a simple shell script to batch-native-compile all of 
emacspeak  --- installed that in a separate git worktree and did the
build -- no warnings. Before I did this, I cleaned out eln-cache since
earlier I found multiple versions of the .eln files there and I wanted
to make sure it was loading the newest.

Though there were no warnings during the batch compile, the warnings
still show up when Emacs is restarted.

Here is  the  build file I used to native compile all of Emacspeak.

#!/bin/sh
EMACS=/home/raman/sourceforge/emacs/src/emacs

make clean
make config EMACS=$EMACS
make EMACS=$EMACS COMPILE="-f batch-native-compile"
cd lisp && make EMACS=$EMACS COMPILE="-f batch-native-compile" muggles 
--no-print-directory
make EMACS=$EMACS COMPILE="-f batch-native-compile" extra-muggles 
--no-print-directory

> Eli Zaretskii <eliz@gnu.org> writes:
>
>
> All of the spurious warnings I'm seeing dont appear in batch compilation
> with batch-byte-compile.
> Here is the file on Github:
>
> https://github.com/tvraman/emacspeak/blob/master/lisp/emacspeak-preamble.el#L91
>
> Separately: when I batch-byte-compile emacspeak, I pass in commandline
> flags that loads emacspeak-loaddefs.el (analogous to Emacs' own
> loaddefs.el)
> is it possible to batch-native-compile (that function does exist) but I
> have no idea where the generated files end up ie if they go somewhere
> different than when generated from a running Emacs.
>
>
>>> From: "T.V Raman" <raman@google.com>
>>> Date: Sun, 16 May 2021 13:51:02 -0700 (PDT)
>>> 
>>> Here is an example.
>>> 
>>> eak/lisp/emacspeak-preamble.el: Error: Symbol's value as variable is
>>> void emacspeak-user-directory Disable showing Disable logging
>>> The above file contains this innocent looking defvar:
>>> (defvar emacspeak-user-directory (expand-file-name "~/.emacspeak/")
>>> "Emacspeak resources, e.g. pronunciation dicts.")
>>> 
>>> The only library it has required at that point is cl-lib
>>> 
>>> In the running emacs, the variable emacspeak-user-directory has the
>>> expected value:
>>> "/home/raman/.emacspeak/"
>>> 
>>> So why the warning above?
>>
>> How can we know without seeing the Lisp source file(s) relevant to
>> this compilation?  The answer is somewhere in those files.
>>
>> In general, native-compilation runs in a separate process that doesn't
>> inherit the environment and loaded packages of your interactive
>> session, so it is more sensitive to problems than when you
>> byte-compile the same source from your interactive session.  In
>> particular, the Emacs sub-process that runs native-compilation is run
>> in the batch mode, which doesn't load your init files.
>>
>> So you could try byte-compiling the same file from the shell prompt in
>> batch mode, as an approximation to what native-compilation does; any
>> warning or error you see in this batch byte-compilation will also
>> happen in the async native-compilation.

-- 

Thanks,

--Raman
?7?4 Id: kg:/m/0285kf1  ?0?8