Re: [arch-dev-public] GCC 11 and new toolchain on [testing]

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On 14-05-2021 23:06, Genes Lists via arch-general wrote:
On 5/13/21 9:29 PM, Giancarlo Razzolini via arch-dev-public wrote:
Hi,

...

Also, if you guys notice any issues, let me know.

Regards,
Giancarlo Razzolini


Hi

FYI, I've come across one issue which was triggered after updating to gcc 11.

Building kea (from git) worked fine using gcc 10, I am now seeing fail :

checking thread support... no
configure: WARNING: unsupported C++11 feature
configure: retrying by adding --std=c++1x to g++ --std=c++0x
checking --std=c++1x support... no
configure: error: thread (a C++11 feature) is not supported

gene


It seems gcc11 in C++11 mode has only partial support for thread safety and the thread class[1] .

Does it work if you build with -std=c++11||||or -std=gnu++11 ?

LW



[1] https://gcc.gnu.org/onlinedocs/gcc-11.1.0/libstdc++/manual/manual/status.html#status.iso.2011




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