Re: [Boost-bugs] [Boost C++ Libraries] #8719: Not possible to target older iOS major version when using SDK from later version

Subject: Re: [Boost-bugs] [Boost C++ Libraries] #8719: Not possible to target older iOS major version when using SDK from later version
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2013-06-21 11:41:28

#8719: Not possible to target older iOS major version when using SDK from later
version
--------------------------------------------+----------------------------
  Reporter:  William Gallafent <william@…>  |      Owner:
      Type:  Bugs                           |     Status:  new
 Milestone:  To Be Determined               |  Component:  Building Boost
   Version:  Boost Development Trunk        |   Severity:  Problem
Resolution:                                 |   Keywords:
--------------------------------------------+----------------------------

Comment (by William Gallafent <william@…>):

 I have currently fudged my way around this by adding the following code
 above the minor-version recursion that I quoted in the original report:

 {{{
         if $(version[2]) > 4
         {
         # ToDo: How do we know at what number to start counting down the
 minor revision,
         # for the previous major revision?
         # For now just fudge: historically the highest it's ever got is 3
 (for 4.3).
         # Should also work out how much lower than current SDK version to
 go down to,
         # looking at historical minimum target versions for given SDK
 versions
         # (This also applies for actual Mac OS X, as well as iOS)
             local major-minus-1 = [ CALC $(version[2]) - 1 ] ;
             return
                 [ init-sdk $(condition) : $(root)
                     : $(version[1]) $(major-minus-1) 3 : [ version-to-
 feature $(version[1]) $(major-minus-1) 3 ] ]
                 $(version-feature) ;
         }
 }}}

-- 
Ticket URL: <https://svn.boost.org/trac/boost/ticket/8719#comment:1>
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