[asterisk-dev] Compiler feature requirements

[Corey Farrell]

I've posted ASTERISK-27619 [1] proposing that we drop support for GCC 
versions older than 4.1.2.  Specifically we'd be requiring that either 
__sync or __atomic builtin functions be available (I'm unsure what this 
will do to clang requirements).  gcc-4.1.2 was released in February 2007 
and was the version provided by CentOS 5.  I've posted a PR to the 
jansson project [2] which will make reference counting thread safe, but 
I'm getting push-back on the parts needed to provide a replacement 
function for old compilers.  Since reference counting in jansson was 
never thread safe before I think they'd rather just leave it as is for 
old compilers.

Obviously this proposal is for Asterisk 16+ only.  Does this matter to 
any distributions that will be supported beyond this October?

[1] https://issues.asterisk.org/jira/browse/ASTERISK-27619
[2] https://github.com/akheron/jansson/pull/389