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[Octave-bug-tracker] [bug #46065] conflicting declarations of max_align_
From: |
Carnë Draug |
Subject: |
[Octave-bug-tracker] [bug #46065] conflicting declarations of max_align_t since gnulib update |
Date: |
Mon, 28 Sep 2015 12:12:02 +0000 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Firefox/38.0 Iceweasel/38.3.0 |
URL:
<http://savannah.gnu.org/bugs/?46065>
Summary: conflicting declarations of max_align_t since gnulib
update
Project: GNU Octave
Submitted by: carandraug
Submitted on: Mon Sep 28 12:12:01 2015
Category: Configuration and Build System
Severity: 3 - Normal
Priority: 5 - Normal
Item Group: Build Failure
Status: None
Assigned to: None
Originator Name:
Originator Email:
Open/Closed: Open
Discussion Lock: Any
Release: 4.0.0
Operating System: GNU/Linux
_______________________________________________________
Details:
Back in Octave 3.8 it was possible to build Octave with C++11. Now, it fails
to build due to conflicting declarations of max_align_t by both gnulib and
gcc:
make[3]: Entering directory '/home/carandraug/builds/octave/liboctave'
CXX array/array_libarray_la-Array-b.lo
In file included from /usr/include/c++/4.9/cstddef:45:0,
from /home/carandraug/dev/octave/liboctave/array/Array.h:30,
from
/home/carandraug/dev/octave/liboctave/array/Array-b.cc:29:
../libgnu/stddef.h:93:3: error: conflicting declaration 'typedef union
max_align_t max_align_t'
} max_align_t;
^
In file included from ../libgnu/stddef.h:55:0,
from /usr/include/c++/4.9/cstddef:45,
from /home/carandraug/dev/octave/liboctave/array/Array.h:30,
from
/home/carandraug/dev/octave/liboctave/array/Array-b.cc:29:
/usr/lib/gcc/x86_64-linux-gnu/4.9/include/stddef.h:425:3: note: previous
declaration as 'typedef struct max_align_t max_align_t'
} max_align_t;
^
Makefile:6887: recipe for target 'array/array_libarray_la-Array-b.lo' failed
The cause of the issue is our update of gnulib with cset 85d9cb769e8b.
I'm unsure if this bug is ours or gnulib but indeed, my config.log file has:
HAVE_MAX_ALIGN_T='0'
To reproduce, simply:
$ CXXFLAGS='-std=gnu++11 -g -O2' ~/dev/octave/configure && make
_______________________________________________________
Reply to this item at:
<http://savannah.gnu.org/bugs/?46065>
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- [Octave-bug-tracker] [bug #46065] conflicting declarations of max_align_t since gnulib update,
Carnë Draug <=