Entry in wrong position in etc/PROBLEMS

Entry in wrong position in etc/PROBLEMS

[Po Lu]

On master, this entry is under "X runtime problems":

*** Link-time optimization with clang doesn't work on Fedora 20.

As of May 2014, Fedora 20 has broken LLVMgold.so plugin support in clang
(tested with clang-3.4-6.fc20) - 'clang --print-file-name=LLVMgold.so'
prints 'LLVMgold.so' instead of full path to plugin shared library, and
'clang -flto' is unable to find the plugin with the following error:

/bin/ld: error: /usr/bin/../lib/LLVMgold.so: could not load plugin library:
/usr/bin/../lib/LLVMgold.so: cannot open shared object file: No such file
or directory

The only way to avoid this is to build your own clang from source code
repositories, as described at http://clang.llvm.org/get_started.html.

I fail to see how this is related to X-Windows, and it should probably
be moved somewhere else.

Thanks.

Re: Entry in wrong position in etc/PROBLEMS

[Eli Zaretskii]

> From: Po Lu <luangruo@yahoo.com>
> Date: Sat, 06 Nov 2021 19:11:21 +0800
> 
> On master, this entry is under "X runtime problems":
> 
> *** Link-time optimization with clang doesn't work on Fedora 20.
> 
> As of May 2014, Fedora 20 has broken LLVMgold.so plugin support in clang
> (tested with clang-3.4-6.fc20) - 'clang --print-file-name=LLVMgold.so'
> prints 'LLVMgold.so' instead of full path to plugin shared library, and
> 'clang -flto' is unable to find the plugin with the following error:
> 
> /bin/ld: error: /usr/bin/../lib/LLVMgold.so: could not load plugin library:
> /usr/bin/../lib/LLVMgold.so: cannot open shared object file: No such file
> or directory
> 
> The only way to avoid this is to build your own clang from source code
> repositories, as described at http://clang.llvm.org/get_started.html.
> 
> I fail to see how this is related to X-Windows, and it should probably
> be moved somewhere else.

Doesn't this error happen at run time?

Re: Entry in wrong position in etc/PROBLEMS

[Po Lu]

Eli Zaretskii <eliz@gnu.org> writes:

>> *** Link-time optimization with clang doesn't work on Fedora 20.
>> 
>> As of May 2014, Fedora 20 has broken LLVMgold.so plugin support in clang
>> (tested with clang-3.4-6.fc20) - 'clang --print-file-name=LLVMgold.so'
>> prints 'LLVMgold.so' instead of full path to plugin shared library, and
>> 'clang -flto' is unable to find the plugin with the following error:
>> 
>> /bin/ld: error: /usr/bin/../lib/LLVMgold.so: could not load plugin library:
>> /usr/bin/../lib/LLVMgold.so: cannot open shared object file: No such file
>> or directory
>> 
>> The only way to avoid this is to build your own clang from source code
>> repositories, as described at http://clang.llvm.org/get_started.html.
>> 
>> I fail to see how this is related to X-Windows, and it should probably
>> be moved somewhere else.

> Doesn't this error happen at run time?

It happens at compile-time, when Clang tries to dlopen LLVMgold.so.  And
even if it happened at run-time, it still would not be related to
X-Windows.

Thanks.

Re: Entry in wrong position in etc/PROBLEMS

[Eli Zaretskii]

> From: Po Lu <luangruo@yahoo.com>
> Cc: emacs-devel@gnu.org
> Date: Sat, 06 Nov 2021 20:02:55 +0800
> 
> > Doesn't this error happen at run time?
> 
> It happens at compile-time, when Clang tries to dlopen LLVMgold.so.  And
> even if it happened at run-time, it still would not be related to
> X-Windows.

Thanks, I moved it.