[arch-general] [arch-dev-public] GCC 11 and new toolchain on [testing]
lone_wolf at klaas-de-kat.nl
Sat May 15 10:33:29 UTC 2021
On 15-05-2021 12:25, Lone_Wolf via arch-general wrote:
> 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:
>>> Also, if you guys notice any issues, let me know.
>>> Giancarlo Razzolini
>> 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
> It seems gcc11 in C++11 mode has only partial support for thread
> safety and the thread class .
> Does it work if you build with -std=c++11 or -std=gnu++11 ?
found another possible cause in https://gcc.gnu.org/gcc-11/porting_to.html .
> The following headers are used less widely in libstdc++ and may need
to be included explicitly when compiled with GCC 11:
> <limits> (for std::numeric_limits)
> <memory> (for std::unique_ptr, std::shared_ptr etc.)
> <utility> (for std::pair, std::tuple_size, std::index_sequence etc.)
> <thread> (for members of namespace std::this_thread.)
P.S. sorry for the bad formatting in previous message.
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