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DMD release compiler flags when building with GDC
Nov 09, 2019
Per Nordlöw
Nov 10, 2019
Johannes Pfau
Nov 10, 2019
Per Nordlöw
November 09, 2019
Gravatar of Per NordlöwPosted by Per NordlöwReply
Per Nordlöw
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I've noticed that the make flag ENABLE_LTO=1 fails as

    Error: unrecognized switch '-flto=full'

when building dmd with GDC 9.

Does gdc-9 support lto? If so what flags should I use?

If not what are the preferred DFLAGS when building dmd with gdc?
November 10, 2019
Gravatar of Johannes PfauPosted by Johannes Pfau
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Johannes Pfau
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Am Sat, 09 Nov 2019 20:43:20 +0000 schrieb Per Nordlöw:

> I've noticed that the make flag ENABLE_LTO=1 fails as
> 
>      Error: unrecognized switch '-flto=full'
> 
> when building dmd with GDC 9.
> 
> Does gdc-9 support lto? If so what flags should I use?
> 
> If not what are the preferred DFLAGS when building dmd with gdc?


I think -flto is the proper flag for GCC/GDC. I don't know if LTO is working though. A long time ago there were some bugs, but maybe that's been fixed. You probably just have to try and see ;-)


-- 
Johannes
November 10, 2019
Gravatar of Per NordlöwPosted by Per Nordlöw
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Per Nordlöw
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On Sunday, 10 November 2019 at 15:59:22 UTC, Johannes Pfau wrote:
> I think -flto is the proper flag for GCC/GDC. I don't know if LTO is working though. A long time ago there were some bugs, but maybe that's been fixed. You probably just have to try and see ;-)

Thanks