bug#47783: 28.0.50; [feature/native-comp] libgccjit.so: error: error invoking gcc driver

bug#47783: 28.0.50; [feature/native-comp] libgccjit.so: error: error invoking gcc driver

[Pankaj Jangid]

I am on macos and after launching Emacs, I get this libgccjit
error. Is this something that I can ignore for now?

--8<---------------cut here---------------start------------->8---
Warning (comp): libgccjit.so: error: error invoking gcc driver Disable showing Disable logging
Warning (comp):
/Users/pankaj/Applications/Emacs.app/Contents/Resources/lisp/emacs-lisp/cl-lib.el.gz:
Error: Internal native compiler error failed to compile Disable
showing Disable logging
--8<---------------cut here---------------end--------------->8---

Further, there are lots of compiler warnings from different package, as
I use Emacs. That means the native compilation is definitely working
asynchronously. One observation here is that every time this happens the
CPU goes 99% for a short time.

I am not using ‘gcc’. I have yet to successfully build Emacs with
‘gcc-10’ on macos. I did this to build Emacs:

git clone ...
./autogen.sh
CC=/usr/bin/clang ./configure --with-native-compilation
make -j8 # I have 4 core, hyperthreading enabled system

Probably ‘clang’ and ‘libgccjit’ has a problem working together.


In GNU Emacs 28.0.50 (build 1, x86_64-apple-darwin20.3.0, NS appkit-2022.30 Version 11.2.3 (Build 20D91))
 of 2021-04-15 built on mb2.local
Repository revision: 686259e65aa7121683c0c65e45ce48adb08ddb58
Repository branch: feature/native-comp
Windowing system distributor 'Apple', version 10.3.2022
System Description:  macOS 11.2.3

Configured using:
 'configure --with-native-compilation'

Configured features:
ACL DBUS GIF GLIB GMP GNUTLS JPEG JSON LCMS2 LIBXML2 MODULES NATIVE_COMP
NOTIFY KQUEUE NS PDUMPER PNG RSVG THREADS TIFF TOOLKIT_SCROLL_BARS XIM
ZLIB

Important settings:
  value of $LANG: en_US
  locale-coding-system: utf-8-unix

Major mode: Summary

Minor modes in effect:
  hl-line-mode: t
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  desktop-save-mode: t
  direnv-mode: t
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  which-key-mode: t
  TeX-PDF-mode: t
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Load-path shadows:
None found.

Features:
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Memory information:
((conses 16 863875 44320)
 (symbols 48 46941 1)
 (strings 32 213402 17021)
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 (buffers 992 50))

-- 
Regards,
Pankaj Jangid

GnuPG Fingerprint: 0B62 7424 3B26 A911 052A DDE6 7C95 6E6F F858 7689

bug#47783: 28.0.50; [feature/native-comp] libgccjit.so: error: error invoking gcc driver

[Eli Zaretskii]

> From: Pankaj Jangid <pankaj@codeisgreat.org>
> Date: Thu, 15 Apr 2021 08:20:26 +0530
> 
> 
> I am on macos and after launching Emacs, I get this libgccjit
> error. Is this something that I can ignore for now?
> 
> --8<---------------cut here---------------start------------->8---
> Warning (comp): libgccjit.so: error: error invoking gcc driver Disable showing Disable logging
> Warning (comp):
> /Users/pankaj/Applications/Emacs.app/Contents/Resources/lisp/emacs-lisp/cl-lib.el.gz:
> Error: Internal native compiler error failed to compile Disable
> showing Disable logging
> --8<---------------cut here---------------end--------------->8---
> 
> Further, there are lots of compiler warnings from different package, as
> I use Emacs. That means the native compilation is definitely working
> asynchronously. One observation here is that every time this happens the
> CPU goes 99% for a short time.
> 
> I am not using ‘gcc’. I have yet to successfully build Emacs with
> ‘gcc-10’ on macos. I did this to build Emacs:
> 
> git clone ...
> ./autogen.sh
> CC=/usr/bin/clang ./configure --with-native-compilation
> make -j8 # I have 4 core, hyperthreading enabled system
> 
> Probably ‘clang’ and ‘libgccjit’ has a problem working together.

So if you don't use GCC, where and how did you get libgccjit, and what
version of GCC does it belong to?

bug#47783: 28.0.50; [feature/native-comp] libgccjit.so: error: error invoking gcc driver

[Pankaj Jangid]

Eli Zaretskii <eliz@gnu.org> writes:

>> Probably ‘clang’ and ‘libgccjit’ has a problem working together.
>
> So if you don't use GCC, where and how did you get libgccjit, and what
> version of GCC does it belong to?

The configure script gave error about not finding ‘libgccjit’. So I
installed it using ‘Homebrew’. The version info as reported by brew
command is - ‘libgccjit: stable 10.2.0’.

After installing ‘libgccjit’, the configure script worked and Emacs
compiled without any errors.

I thought there is no ABI issue so went ahead. Are they incompatible?
‘clang’ and ‘libgccjit’.

bug#47783: 28.0.50; [feature/native-comp] libgccjit.so: error: error invoking gcc driver

[Eli Zaretskii]

> From: Pankaj Jangid <pankaj@codeisgreat.org>
> Cc: 47783@debbugs.gnu.org,  Andrea Corallo <akrl@sdf.org>
> Date: Thu, 15 Apr 2021 18:26:04 +0530
> 
> I thought there is no ABI issue so went ahead. Are they incompatible?
> ‘clang’ and ‘libgccjit’.

I don't know, but maybe Andrea does.

bug#47783: 28.0.50; [feature/native-comp] libgccjit.so: error: error invoking gcc driver

[Andrea Corallo via Bug reports for GNU Emacs, the Swiss army knife of text editors]

Eli Zaretskii <eliz@gnu.org> writes:

>> From: Pankaj Jangid <pankaj@codeisgreat.org>
>> Cc: 47783@debbugs.gnu.org,  Andrea Corallo <akrl@sdf.org>
>> Date: Thu, 15 Apr 2021 18:26:04 +0530
>> 
>> I thought there is no ABI issue so went ahead. Are they incompatible?
>> ‘clang’ and ‘libgccjit’.
>
> I don't know, but maybe Andrea does.

AFAIK this configuration should work.

  Andrea

bug#47783: 28.0.50; [feature/native-comp] libgccjit.so: error: error invoking gcc driver

[Andrea Corallo via Bug reports for GNU Emacs, the Swiss army knife of text editors]

Pankaj Jangid <pankaj@codeisgreat.org> writes:

> I am on macos and after launching Emacs, I get this libgccjit
> error. Is this something that I can ignore for now?
>
> Warning (comp): libgccjit.so: error: error invoking gcc driver Disable showing Disable logging
> Warning (comp):
> /Users/pankaj/Applications/Emacs.app/Contents/Resources/lisp/emacs-lisp/cl-lib.el.gz:
> Error: Internal native compiler error failed to compile Disable
> showing Disable logging

Hi Pankaj,

this look like an env misconfiguration that prevents libgccjit for
finding the driver.

Could you please report the full error in the
*Async-native-compile-log* buffer?

Also have already you tried invoking "emacs -Q"?

Thanks

  Andrea

bug#47783: 28.0.50; [feature/native-comp] libgccjit.so: error: error invoking gcc driver

[Pankaj Jangid]

Andrea Corallo via "Bug reports for GNU Emacs, the Swiss army knife of
text editors" <bug-gnu-emacs@gnu.org> writes:

>> I am on macos and after launching Emacs, I get this libgccjit
>> error. Is this something that I can ignore for now?
>>
>> Warning (comp): libgccjit.so: error: error invoking gcc driver Disable showing Disable logging
>> Warning (comp):
>> /Users/pankaj/Applications/Emacs.app/Contents/Resources/lisp/emacs-lisp/cl-lib.el.gz:
>> Error: Internal native compiler error failed to compile Disable
>> showing Disable logging
>
> this look like an env misconfiguration that prevents libgccjit for
> finding the driver.
>
> Could you please report the full error in the
> *Async-native-compile-log* buffer?
>
> Also have already you tried invoking "emacs -Q"?

I usually launch ‘Emacs.app’ from GUI (Launchpad on macos). But when I
have to pass argument e.g. ‘-Q’ I use command-line. After your above
message I tried ‘emacs -Q’ and it worked without any error.

And you are right, it was environment related problem. Following is the
snippet from ‘*Async-native-compile-log*’:

--8<---------------cut here---------------start------------->8---
Compiling /Users/pankaj/Applications/Emacs.app/Contents/Resources/lisp/emacs-lisp/cl-lib.el.gz...
uncompressing cl-lib.el.gz...
uncompressing cl-lib.el.gz...done
ld: library not found for -lgcc_ext.10.5
libgccjit.so: error: error invoking gcc driver
/Users/pankaj/Applications/Emacs.app/Contents/Resources/lisp/emacs-lisp/cl-lib.el.gz: Error: Internal native compiler error failed to compile
Compiling /Users/pankaj/Applications/Emacs.app/Contents/Resources/lisp/emacs-lisp/seq.el.gz...
uncompressing seq.el.gz...
uncompressing seq.el.gz...done
--8<---------------cut here---------------end--------------->8---

But now I am puzzled at one more thing. Now I am not getting the error
even when I start from GUI. Does it save the location of ‘libgccjit’
somewhere, once it is found?

--
Regards
Pankaj

bug#47783: 28.0.50; [feature/native-comp] libgccjit.so: error: error invoking gcc driver

[Andrea Corallo via Bug reports for GNU Emacs, the Swiss army knife of text editors]

Pankaj Jangid <pankaj@codeisgreat.org> writes:

> Andrea Corallo via "Bug reports for GNU Emacs, the Swiss army knife of
> text editors" <bug-gnu-emacs@gnu.org> writes:
>
>>> I am on macos and after launching Emacs, I get this libgccjit
>>> error. Is this something that I can ignore for now?
>>>
>>> Warning (comp): libgccjit.so: error: error invoking gcc driver Disable showing Disable logging
>>> Warning (comp):
>>> /Users/pankaj/Applications/Emacs.app/Contents/Resources/lisp/emacs-lisp/cl-lib.el.gz:
>>> Error: Internal native compiler error failed to compile Disable
>>> showing Disable logging
>>
>> this look like an env misconfiguration that prevents libgccjit for
>> finding the driver.
>>
>> Could you please report the full error in the
>> *Async-native-compile-log* buffer?
>>
>> Also have already you tried invoking "emacs -Q"?
>
> I usually launch ‘Emacs.app’ from GUI (Launchpad on macos). But when I
> have to pass argument e.g. ‘-Q’ I use command-line. After your above
> message I tried ‘emacs -Q’ and it worked without any error.
>
> And you are right, it was environment related problem. Following is the
> snippet from ‘*Async-native-compile-log*’:
>
> Compiling /Users/pankaj/Applications/Emacs.app/Contents/Resources/lisp/emacs-lisp/cl-lib.el.gz...
> uncompressing cl-lib.el.gz...
> uncompressing cl-lib.el.gz...done
> ld: library not found for -lgcc_ext.10.5
> libgccjit.so: error: error invoking gcc driver
> /Users/pankaj/Applications/Emacs.app/Contents/Resources/lisp/emacs-lisp/cl-lib.el.gz: Error: Internal native compiler error failed to compile
> Compiling /Users/pankaj/Applications/Emacs.app/Contents/Resources/lisp/emacs-lisp/seq.el.gz...
> uncompressing seq.el.gz...
> uncompressing seq.el.gz...done
>
> But now I am puzzled at one more thing. Now I am not getting the error
> even when I start from GUI. Does it save the location of ‘libgccjit’
> somewhere, once it is found?

AFAIK no,

I don't know what happened here but I bet has to do with the value of
one of these three env vars [1] and most likely PATH.

  Andrea

[1] <https://gcc.gnu.org/onlinedocs/jit/internals/index.html#environment-variables>

bug#47783: 28.0.50; [feature/native-comp] libgccjit.so: error: error invoking gcc driver

[Pankaj Jangid]

Andrea Corallo via "Bug reports for GNU Emacs, the Swiss army knife of
text editors" <bug-gnu-emacs@gnu.org> writes:

> I don't know what happened here but I bet has to do with the value of
> one of these three env vars [1] and most likely PATH.
>
> [1] <https://gcc.gnu.org/onlinedocs/jit/internals/index.html#environment-variables>
>

I am working with pre-built version of ‘gcc’ and ‘libgccjit’ from
Homebrew. So I tried to set the following environment
variables. Experimented with various permutation combinations of these.

#+begin_src elisp
(add-to-list 'exec-path
             "/usr/local/opt/gcc/bin")
(setenv "PATH" (mapconcat 'identity exec-path ":"))        
(setenv "LD_LIBRARY_PATH"
        "/usr/local/opt/libgccjit/lib/gcc/10:/usr/local/opt/gcc/lib/gcc/10")
(setenv "LIBRARY_PATH"
        "/usr/local/opt/libgccjit/lib/gcc/10:/usr/local/opt/gcc/lib/gcc/10")
#end_src

The above are standard location of ‘gcc’ and ’libgccjit’ artifacts.

The exec-path configuration above crashes my Emacs at startup. So I had
to comment that out.
\f

Is there a way in Emacs to get all the environment variables in one go?
I want to compare the vars from two invocations - GUI and CLI. As I
reported earlier that CLI invocation works without any error.
\f

More facts:

The error comes only at the beginning. As you can see in the following
log (*Async-native-compilation-log) that compilation is working fine
later on.

--8<---------------cut here---------------start------------->8---
Compiling /Users/pankaj/Applications/Emacs.app/Contents/Resources/lisp/emacs-lisp/cl-lib.el.gz...
uncompressing cl-lib.el.gz...
uncompressing cl-lib.el.gz...done
ld: library not found for -lgcc_ext.10.5
libgccjit.so: error: error invoking gcc driver
/Users/pankaj/Applications/Emacs.app/Contents/Resources/lisp/emacs-lisp/cl-lib.el.gz: Error: Internal native compiler error failed to compile
Compiling /Users/pankaj/Applications/Emacs.app/Contents/Resources/lisp/emacs-lisp/crm.el.gz...
uncompressing crm.el.gz...
uncompressing crm.el.gz...done
Compiling /Users/pankaj/Applications/Emacs.app/Contents/Resources/lisp/progmodes/hideshow.el.gz...
uncompressing hideshow.el.gz...
uncompressing hideshow.el.gz...done
Compiling /Users/pankaj/Applications/Emacs.app/Contents/Resources/lisp/emacs-lisp/advice.el.gz...
uncompressing advice.el.gz...
uncompressing advice.el.gz...done
Compiling /Users/pankaj/Applications/Emacs.app/Contents/Resources/lisp/outline.el.gz...
uncompressing outline.el.gz...
uncompressing outline.el.gz...done
Compiling /Users/pankaj/Applications/Emacs.app/Contents/Resources/lisp/calendar/cal-menu.el.gz...
uncompressing cal-menu.el.gz...
uncompressing cal-menu.el.gz...done
--8<---------------cut here---------------end--------------->8---

And when all the compilation is done the error goes away; it does not
appear in further sessions.

bug#47783: 28.0.50; [feature/native-comp] libgccjit.so: error: error invoking gcc driver

[Andrea Corallo via Bug reports for GNU Emacs, the Swiss army knife of text editors]

Pankaj Jangid <pankaj@codeisgreat.org> writes:

> Andrea Corallo via "Bug reports for GNU Emacs, the Swiss army knife of
> text editors" <bug-gnu-emacs@gnu.org> writes:
>
>> I don't know what happened here but I bet has to do with the value of
>> one of these three env vars [1] and most likely PATH.
>>
>> [1] <https://gcc.gnu.org/onlinedocs/jit/internals/index.html#environment-variables>
>>
>
> I am working with pre-built version of ‘gcc’ and ‘libgccjit’ from
> Homebrew. So I tried to set the following environment
> variables. Experimented with various permutation combinations of these.
>
> #+begin_src elisp
> (add-to-list 'exec-path
>              "/usr/local/opt/gcc/bin")
> (setenv "PATH" (mapconcat 'identity exec-path ":"))        
> (setenv "LD_LIBRARY_PATH"
>         "/usr/local/opt/libgccjit/lib/gcc/10:/usr/local/opt/gcc/lib/gcc/10")
> (setenv "LIBRARY_PATH"
>         "/usr/local/opt/libgccjit/lib/gcc/10:/usr/local/opt/gcc/lib/gcc/10")
> #end_src
>
> The above are standard location of ‘gcc’ and ’libgccjit’ artifacts.
>
> The exec-path configuration above crashes my Emacs at startup. So I had
> to comment that out.
> \f
>
> Is there a way in Emacs to get all the environment variables in one
> go?

One can use the `process-environment' variable. Also might be useful for
you `initial-environment'.

  Andrea

bug#47783: 28.0.50; [feature/native-comp] libgccjit.so: error: error invoking gcc driver

[Pankaj Jangid]

Andrea Corallo via "Bug reports for GNU Emacs, the Swiss army knife of
text editors" <bug-gnu-emacs@gnu.org> writes:

>> Is there a way in Emacs to get all the environment variables in one
>> go?
>
> One can use the `process-environment' variable. Also might be useful for
> you `initial-environment'.

Finally, as you pointed out, PATH env is the root cause. When I start
from GUI the PATH is set to:

     "/usr/bin:/bin:/usr/sbin:/sbin"

But when I start from CLI, the Bash init files are executed and hence
the PATH is:

    "/Users/pankaj/.sdkman/candidates/kotlin/current/bin:/Users/pankaj/.sdkman/candidates/groovy/current/bin:/Users/pankaj/.sdkman/candidates/gradle/current/bin:/Users/pankaj/.sdkman/candidates/ant/current/bin:/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin:/Library/TeX/texbin:/Library/Apple/usr/bin:/Users/pankaj/Applications/Emacs.app/Contents/MacOS:/Users/pankaj/Applications/Emacs.app/Contents/MacOS/bin:/Users/pankaj/go/bin:/Users/pankaj/.cargo/bin"

There are lots of things. But the PATH, which we are interested in, is
the location of compiler; and that is "/usr/local/bin". So I hard-coded
PATH in a CLI session:

   export PATH=/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin

And then launched ‘Emacs’ from there. Worked perfectly fine.

So, my question is - is there a way to adjust the ‘initial-environment’
variable? The docstring says that it is inherited from the parent
process. So that makes it kind-of read-only.

Other solution could be to hold-on the compilation till full
‘~/emacs.d/init.el’ (or whichever is the init file) is
evaluated. Because users configure the environment variables during that
process.

--
Regards
Pankaj

bug#47783: 28.0.50; [feature/native-comp] libgccjit.so: error: error invoking gcc driver

[Eli Zaretskii]

> From: Pankaj Jangid <pankaj@codeisgreat.org>
> Date: Sat, 17 Apr 2021 22:27:53 +0530
> 
> Andrea Corallo via "Bug reports for GNU Emacs, the Swiss army knife of
> text editors" <bug-gnu-emacs@gnu.org> writes:
> 
> >> Is there a way in Emacs to get all the environment variables in one
> >> go?
> >
> > One can use the `process-environment' variable. Also might be useful for
> > you `initial-environment'.
> 
> Finally, as you pointed out, PATH env is the root cause. When I start
> from GUI the PATH is set to:
> 
>      "/usr/bin:/bin:/usr/sbin:/sbin"
> 
> But when I start from CLI, the Bash init files are executed and hence
> the PATH is:
> 
>     "/Users/pankaj/.sdkman/candidates/kotlin/current/bin:/Users/pankaj/.sdkman/candidates/groovy/current/bin:/Users/pankaj/.sdkman/candidates/gradle/current/bin:/Users/pankaj/.sdkman/candidates/ant/current/bin:/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin:/Library/TeX/texbin:/Library/Apple/usr/bin:/Users/pankaj/Applications/Emacs.app/Contents/MacOS:/Users/pankaj/Applications/Emacs.app/Contents/MacOS/bin:/Users/pankaj/go/bin:/Users/pankaj/.cargo/bin"
> 
> There are lots of things. But the PATH, which we are interested in, is
> the location of compiler; and that is "/usr/local/bin". So I hard-coded
> PATH in a CLI session:
> 
>    export PATH=/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin
> 
> And then launched ‘Emacs’ from there. Worked perfectly fine.

But the problem is not when Emacs is run from CLI, it's when it's run
from GUI, right?  Because /usr/local/bin is not in PATH then.

bug#47783: 28.0.50; [feature/native-comp] libgccjit.so: error: error invoking gcc driver

[Pankaj Jangid]

Eli Zaretskii <eliz@gnu.org> writes:

>> 
>>    export PATH=/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin
>> 
>> And then launched ‘Emacs’ from there. Worked perfectly fine.
>
> But the problem is not when Emacs is run from CLI, it's when it's run
> from GUI, right?  Because /usr/local/bin is not in PATH then.

I think I need to do at least one more experiment. Launch ‘emacs’ from a
wrapper script ... launched from GUI.

Wrapper scripts sets PATH and launch ‘emacs’. Let me do it and report in
a while.

bug#47783: 28.0.50; [feature/native-comp] libgccjit.so: error: error invoking gcc driver

[Pankaj Jangid]

Pankaj Jangid <pankaj@codeisgreat.org> writes:

>>>    export PATH=/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin
>>> 
>>> And then launched ‘Emacs’ from there. Worked perfectly fine.
>>
>> But the problem is not when Emacs is run from CLI, it's when it's run
>> from GUI, right?  Because /usr/local/bin is not in PATH then.
>
> I think I need to do at least one more experiment. Launch ‘emacs’ from a
> wrapper script ... launched from GUI.
>
> Wrapper scripts sets PATH and launch ‘emacs’. Let me do it and report in
> a while.

I have yet to find a way to set the environment variable PATH in macos
so that the GUI apps find it. It appears that it is not straightforward.

Anyway, this is not a blocker for merging into master.

I’ll update here once I am done with the PATH settings.

bug#47783: 28.0.50; [feature/native-comp] libgccjit.so: error: error invoking gcc driver

[Lars Ingebrigtsen]

Pankaj Jangid <pankaj@codeisgreat.org> writes:

> I’ll update here once I am done with the PATH settings.

This was a couple of weeks ago -- skimming this thread, it's unclear to
me whether there's anything more to do in this bug report.  Did you
resolve this issue?

-- 
(domestic pets only, the antidote for overdose, milk.)
   bloggy blog: http://lars.ingebrigtsen.no

bug#47783: 28.0.50; [feature/native-comp] libgccjit.so: error: error invoking gcc driver

[Pankaj Jangid]

Lars Ingebrigtsen <larsi@gnus.org> writes:

> Pankaj Jangid <pankaj@codeisgreat.org> writes:
>
>> I’ll update here once I am done with the PATH settings.
>
> This was a couple of weeks ago -- skimming this thread, it's unclear to
> me whether there's anything more to do in this bug report.  Did you
> resolve this issue?

While this was easy to test on Linux. I have not yet done on MacOS. But
I am 100% sure now that this is environment related issue. I’ll post my
finidngs when done. But this is not a blocker in any way. Workaround is
to launch from commandline if users face the issue.