Chris Friedt

Building the Zephyr SDK manually is successful with the current changes in zephyrproject-rtos/gcc#25 zephyrproject-rtos/sdk-ng#722 but unfortunately the CI fails without really having any kind of decent diagnostics or debug information....

Slightly different direction at this point - namely using the ISO C11 threads API to support ISO C++11 threads in gcc. Just performing some final testing. https://github.com/zephyrproject-rtos/sdk-ng/pull/735

> I am trying to build a custom aarch64 toolchain with crosstool-ng and newlib and also c++ support to use with zephyr 3.4 and posix. @valentinkorenblit - check out the...

marked `DNM` until `sdk-ng` changes are accepted.

I agree with Keith in this case.

> instead it is reacting to one of the possible things a user may be using to enable breaking that rule, but which may also be used for legitimate reasons;...

> @cfriedt > > > @aescolar - can you list the legitimate reasons? To clarify, what are the legitimate reasons we would want to allow `_POSIX_C_SOURCE` definitions to be used...

@whythefyouflying - it might be worth it to put this PR into draft mode