[MacPorts] #34171: root: add cling variant

[MacPorts]

#34171: root: add cling variant
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 Reporter:  Deil.Christoph@…          |       Owner:  mattiafrancescomoro@…        
     Type:  enhancement               |      Status:  new                          
 Priority:  Normal                    |   Milestone:                               
Component:  ports                     |     Version:  2.0.4                        
 Keywords:                            |        Port:  root                         
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Comment(by Deil.Christoph@…):

 I did uninstall all llvm and clang port variants I had except I couldn't
 get rid of {{{llvm-3.0 @3.0_4}}}:

 {{{
 --->  Unable to uninstall llvm-3.0 @3.0_4, the following ports depend on
 it:
 --->    cctools @822_1
 --->    cctools @822_2+llvm30

 --->  Unable to uninstall cctools @822_2+llvm30, the following ports
 depend on it:
 --->    gcc44 @4.4.7_1
 --->    gcc45 @4.5.3_3
 --->    gcc46 @4.6.3_1
 --->    gcc47 @4.7.0_2
 }}}

 Nevertheless I did re-install the current versions of {{{llvm-3.1}}} and
 {{{clang-3.1}}}:

 {{{
 $ port installed '*llvm*'
 The following ports are currently installed:
   llvm-3.0 @3.0_4 (active)
   llvm-3.1 @3.1-r154872_0+assertions (active)
   llvm_select @0.2_0 (active)
 $ port installed '*clang*'
 The following ports are currently installed:
   clang-3.1 @3.1-r154872_0+analyzer+assertions (active)
   clang_select @0.1_0 (active)
 }}}

 Now I see the same 'clang/AST/ASTContext.h' file not found error as you.

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Ticket URL: <https://trac.macports.org/ticket/34171#comment:14>
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