OSX 10.6 clang / llvm circular dependency

[Ken Cunningham]

Blacklisting the currently building compiler if not installed was always meant to be there; it's part of every other clang version. 

Slipped past someone.

Thanks. 

Ken

<https://github.com/macports/macports-ports/commit/e4b5bc78c3859b899689f16fae4951323247e8d8>


PS - you may wonder if it is EVER a good idea on MacPorts to build a compiler with the same compiler -- ie perhaps the current compiler should always be blacklisted? Currently we blacklist it only if it's not already installed.

I pondered doing that just now -- but Jeremy put it this way for a reason -- perhaps way back when, when clang-3.4 libstdc++ was needed to bootstrap clang-3.4 libc++.

I left it like Jeremy put it for now. If we run into troubles (like a broken install of clang-7.0 that tries to rebuild itself with the broken install of clang-7.0, for example) we can just universally blacklist the current compiler.


Ken








On 2019-02-11, at 8:47 AM, Michael Dickens wrote:

> awesome! looking forward to having this issue behind me! I'll check out your changes this afternoon ... - MLD
> 
> On Mon, Feb 11, 2019, at 11:37 AM, Ken Cunningham wrote:
>> Someone, maybe me, forgot to blacklist clang 7.0 when building clang 7.0. 
>> 
>> It's a 10 second fix in the portfile; I'll take care of it in a few minutes.
>> 
>> Thanks for noticing.
>> 
>> Ken