[Boost-bugs] [Boost C++ Libraries] #13274: boost.filesystem compile problem on Android

Subject: [Boost-bugs] [Boost C++ Libraries] #13274: boost.filesystem compile problem on Android
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2017-10-25 08:48:40

#13274: boost.filesystem compile problem on Android
-------------------------------+-------------------------
 Reporter:  Berkus <berkus@…>  |      Owner:  Beman Dawes
     Type:  Bugs               |     Status:  new
Milestone:  To Be Determined   |  Component:  filesystem
  Version:  Boost 1.65.0       |   Severity:  Problem
 Keywords:                     |
-------------------------------+-------------------------
 Hello, in attempt to build boost for android with more or less reasonable
 strict settings (-Werror) I uncovered some bugs which I cannot report on
 github because these projects have Issues disabled.

 {{{
 /usr/local/opt/android-ndk/android-
 ndk-r16-beta1//sources/android/support/include/stdio.h:36:25: error:
 invalid token at start of a p
 reprocessor expression
 #if __USE_FILE_OFFSET64 && __ANDROID_API__ < __ANDROID_API_N__
 }}}

 This happens because filesystem defines a "harmless" macro:

 {{{
 libs/filesystem/src/operations.cpp:18:9: warning: '__USE_FILE_OFFSET64'
 macro redefined [-Wmacro-redefined]
 #define __USE_FILE_OFFSET64 // but that is harmless on Windows and on
 POSIX
         ^
 }}}

 While this check was {{{#if defined(__USE_FILE_OFFSET64)}}} in previous
 android versions, it seems to have changed when they introduced unified
 headers. It's probably more "harmless" to define an integer value in
 boost.filesystem rather than persuade Google to fix their code.

-- 
Ticket URL: <https://svn.boost.org/trac10/boost/ticket/13274>
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