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<== Date ==> | <== Thread ==> |
---|
Subject: | Re: External: changing compiler versions |
From: | Pierrick M Hanlet via Tech-talk <tech-talk at aps.anl.gov> |
To: | Niko Kivel <Niko.Kivel at LIGHTSOURCE.CA>, "tech-talk at aps.anl.gov" <tech-talk at aps.anl.gov> |
Date: | Sat, 8 Jul 2023 03:39:29 +0000 |
Hi Pierrick
This works for me on Alma 9.2 and Debian 12
```# CONFIG_SITE.Common.linuxCommon# ...CODE_CPPFLAGS += -fno-strict-aliasing
USR_CXXFLAGS += $(STD_CXXFLAGS)STD_CXXFLAGS = -std=c++20
```
HTH Niko
From: Tech-talk <tech-talk-bounces at aps.anl.gov> on behalf of Pierrick M Hanlet via Tech-talk <tech-talk at aps.anl.gov>
Sent: Friday, July 7, 2023 1:12 PM
To: tech-talk at aps.anl.gov <tech-talk at aps.anl.gov>
Subject: External: changing compiler versionsGreetings all,
I'd like to build our EPICS software (starting on an Alma Linux 9 platform) for
C++17 or even C++20. I'm presently building with C++11 by adding
-std=c++11 to the USR_CXXFLAGS in configure/CONFIG_COMMON. However,
when I tried c++20/c++17/c++14 and it failed in every case with:
somewhere in the middle of building libcom - after the compilation call to
- g++: error: unrecognized command line option ‘-std=c++20’
resourceLib.
A colleague of mine played with the configure/CONFIG.gnuCommon and
had a different level of success and failure.
Any help, even pointing me to the correct documentation would be
greatly appreciated.
Cheers,
Pierrick
-- Pierrick Hanlet Fermi National Accelerator Accelerator Front End Controls +1-630-840-5555 -- lab +1-312-687-4980 -- mobile "Whether you think you can or think you can't, you're right" -- Henry Ford
-- Pierrick Hanlet Fermi National Accelerator Accelerator Front End Controls +1-630-840-5555 -- lab +1-312-687-4980 -- mobile "Whether you think you can or think you can't, you're right" -- Henry Ford