Re: [Boost-bugs] [Boost C++ Libraries] #10591: boost::filesystem does not build on iOS 8

Subject: Re: [Boost-bugs] [Boost C++ Libraries] #10591: boost::filesystem does not build on iOS 8
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2015-08-13 15:54:43

#10591: boost::filesystem does not build on iOS 8
-------------------------------+------------------------
  Reporter:  anonymous         |      Owner:  bemandawes
      Type:  Bugs              |     Status:  assigned
 Milestone:  To Be Determined  |  Component:  filesystem
   Version:  Boost 1.56.0      |   Severity:  Problem
Resolution:                    |   Keywords:
-------------------------------+------------------------

Comment (by tiwoc@…):

 Apple does implement fchmodat from OS X 10.10 and iOS 8.0. Have a look at
 the following line of /usr/include/sys/stat.h:

 {{{
 int     fchmodat(int, const char *, mode_t, int)
 __OSX_AVAILABLE_STARTING(__MAC_10_10, __IPHONE_8_0);
 }}}

 This means that fchmodat will only be available when '''targeting''' OS X
 10.10+ or iOS 8.0+, but the AT_* constants are always defined when
 building '''on''' 10.10, so they cannot be used for detection whether
 fchmodat is available.

 I just posted a patch that uses the __MAC_OS_X_VERSION_MIN_REQUIRED and
 __IPHONE_OS_VERSION_MIN_REQUIRED defines for detection. It has been
 verified to work well with Boost 1.58.0 on OS X 10.9 and 10.10 (both
 targeting 10.9), Linux and Windows (MSVC).

-- 
Ticket URL: <https://svn.boost.org/trac/boost/ticket/10591#comment:4>
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