Re: lang/llvm15 -- Why is flang being built?

From: Theron <theron.tarigo_at_gmail.com>
Date: Mon, 30 Jan 2023 19:18:20 UTC 
On 1/30/23 13:37, Brooks Davis wrote:
> On Mon, Jan 30, 2023 at 09:17:07PM +0300, Gleb Popov wrote:
>> On Mon, Jan 30, 2023 at 7:59 PM Steve Kargl
>> <sgk@troutmask.apl.washington.edu> wrote:
>>> % flang15 -o z a.f90
>>> error: /usr/ports/devel/llvm15/work/llvm-project-15.0.7.src/flang/lib/Optimizer/CodeGen/Target.cpp:312: not yet implemented: target not implemented
>>> % flang-new15 -o z a.f90
>>> error: /usr/ports/devel/llvm15/work/llvm-project-15.0.7.src/flang/lib/Optimizer/CodeGen/Target.cpp:312: not yet implemented: target not implemented
>>>
>>> Inspection of Target.cpp shows that the word "FreeBSD"
>>> does not appear anywhere.
>>>
>>> --
>>> Steve
>>>
>> This was fixed shortly after the release, but Flang itself still isn't
>> capable of producing working executables. It should probably be turned
>> off for now.
> I'll turn it off by default in llvm15 and the upcoming llvm16.
>
> -- Brooks

with llvm-devel 16.0.d20230109 :

% /usr/local/llvm-devel/bin/flang -o orbit orbit.f90  -O3 -Wall -Wextra 
-Werror  -L/usr/local/llvm-devel/lib -lFortran_main -lFortranRuntime 
-lFortranDecimal -lm

produces a working executable for me, with results agreeing within 1ULP 
with those of the executable compiled by devel/flang (expired).  
Performance is reasonable (though inferior, but this is only one test).
Thus basic executable functionality, and at least one real world program 
work.  I do not see a reason to omit flang from upcoming llvm16.

Theron