[141132] trunk/dports/lang/apple-gcc42/Portfile

[Jeremy Huddleston Sequoia]

> On Oct 11, 2015, at 23:15, Ryan Schmidt <ryandesign at macports.org> wrote:
> 
> On Oct 11, 2015, at 11:14 AM, jeremyhu at macports.org wrote:
> 
>> Revision
>> 141132
>> Author
>> jeremyhu at macports.org
>> Date
>> 2015-10-11 09:14:38 -0700 (Sun, 11 Oct 2015)
>> Log Message
>> 
>> apple-gcc42: Drop support on ElCap
> 
> 
> On Oct 11, 2015, at 11:15 AM, jeremyhu at macports.org wrote:
> 
>> Revision
>> 141133
>> Author
>> jeremyhu at macports.org
>> Date
>> 2015-10-11 09:15:20 -0700 (Sun, 11 Oct 2015)
>> Log Message
>> 
>> llvm-gcc42: Drop support on ElCap
> 
> 
> On Oct 11, 2015, at 12:09 PM, jeremyhu at macports.org wrote:
> 
>> Revision
>> 141134
>> Author
>> jeremyhu at macports.org
>> Date
>> 2015-10-11 10:09:05 -0700 (Sun, 11 Oct 2015)
>> Log Message
>> 
>> Refactor and update portconfigure::get_compiler_fallback
>> 
>> Separate out list generation into stages for easier updates in the future.
>> Use newer clang versions when using libc++ as our default C++ runtime.
>> Don't add legacy gcc fallbacks on El Capitan.
> 
> 
> Any particular reason you removed apple-gcc42 and llvm-gcc42 on El Capitan? We only just released MacPorts 2.3.4 which finally returned apple-gcc42 and llvm-gcc42 to the list of available compilers for Xcode 6 and later (r140687). Reverting r141132, apple-gcc42 builds fine for me on 10.11, and reverting r141133, llvm-gcc42 builds fine for me with apple-gcc42 on 10.11. Are there situations where these compilers don't work correctly because of a change in El Capitan?

They don't support C11
They don't support C++11
They don't support libc++
They've been deprecated for almost 5 years now.
I don't want to give the impression that we actually support this legacy toolchain on modern systems; it's only purpose was to help build ports that weren't building with clang.
If you don't want to drop support for them now, what do you consider a good time?  I'd prefer to not keep around legacy compilers if they're not actually needed.  So I guess I'll flip the question to you and ask if there's any compelling reason why one would still need them on El Cap.  Xcode 7's clang (and indeed macports-clang-3.7) is a much more mature, robust, and reliable compiler on El Cap than gcc-4.2.

--Jeremy

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