[Ohrrpgce] SVN: teeemcee/8451 Link in stdc++compat.cpp on Unix. We appear to be compatible with gcc si

[Ralph Versteegen]

On 27 February 2017 at 17:29, Ralph Versteegen <teeemcee at gmail.com> wrote:

>
>
> On 27 February 2017 at 16:45, James Paige <Bob at hamsterrepublic.com> wrote:
>
>> On Sun, Feb 26, 2017 at 6:58 PM, Ralph Versteegen <teeemcee at gmail.com>
>> wrote:
>>
>>> What gcc version do you have?
>>>
>>> I looked up the runtime_error error on ixrat and found that it was
>>> because that constructor was only introduced in gcc 5.0 while jessie
>>> apparently has 4.9, but I don't understand why you got this error on ubuntu
>>> 16.04. It looks like that ubuntu version might default to gcc 5.3, but it's
>>> quite easy to install a different version. I'm using gcc 5.4 myself without
>>> trouble, and don't know why 5.3 would have a problem.
>>>
>>
>> ixrat is indeed running gcc 4.9.2
>> My Ubuntu 16.04 box (palsink) is running gcc 5.4.0
>> I can try installing a different version of gcc and see what happens, but
>> I have run out of time for this weekend, so I'll have to try that later.
>>
>
> I worked it out, this is due to a difference in ABI which apparently
> depends on how the distro maintainers configured gcc. There was a bug on
> Mozilla bugzilla which has the explanation and fix:
> https://bugzilla.mozilla.org/show_bug.cgi?id=1153109
> https://gcc.gnu.org/onlinedocs/libstdc%2B%2B/manual/using_dual_abi.html
>

Turns out it's actually Ubuntu that goes with the default setting, and
Slackware which configs gcc with --with-default-libstdcxx-abi=
gcc4-compatible

It occurs to me that setting _GLIBCXX_USE_CXX11_ABI=0 could cause crashes
if its not the system default and if linking to any C++ library, such as
audiere. Basically this means that if we wanted to distribute a
music_native linux build either we couldn't be compatible with gcc < 5, or
we have to include libaudiere.so... but we would have to do that anyway
because audiere isn't really available anywhere.


>
>
>
>
>>
>>
>>
>>> stdc++compat.cpp doesn't need to be linked in when not using portable=1
>>> anyway, but I'd like to see if I can fix this problem before taking the
>>> easy way out.
>>>
>>>
>>> On 27 February 2017 at 14:28, James Paige <Bob at hamsterrepublic.com>
>>> wrote:
>>>
>>>> Starting with this revision, I cannot compile at all on my Ubuntu 16.04
>>>> box:
>>>>
>>>> james at breq:~/Dropbox/src/ohr/wip$ scons arch=64
>>>> scons: Reading SConscript files ...
>>>> Using target: linux  arch: x86_64  gcc: gcc  gcctarget:
>>>> x86_64-linux-gnu  fbcversion: 1050
>>>> scons: done reading SConscript files.
>>>> scons: Building targets ...
>>>> Generating ver.txt
>>>> fbc -c build/savegame.rbas.bas -o build/savegame.rbas.o -mt -exx -g -O
>>>> 2 -target linux -arch x86_64 -gen gcc -Wc -Wno-maybe-uninitialized,-fno-omit-frame-pointer
>>>> -d DATAFILES='"/usr/share/games/ohrrpgce"' -d IS_GAME -m game
>>>> fbc -c build/common.rbas.bas -o build/game-common.rbas.o -mt -exx -g -O
>>>> 2 -target linux -arch x86_64 -gen gcc -Wc -Wno-maybe-uninitialized,-fno-omit-frame-pointer
>>>> -d DATAFILES='"/usr/share/games/ohrrpgce"' -d IS_GAME -m game
>>>> fbc -c build/loading.rbas.bas -o build/game-loading.rbas.o -mt -exx -g
>>>> -O 2 -target linux -arch x86_64 -gen gcc -Wc -Wno-maybe-uninitialized,-fno-omit-frame-pointer
>>>> -d DATAFILES='"/usr/share/games/ohrrpgce"' -d IS_GAME -m game
>>>> g++ -o build/lib/stdc++compat.o -c -O3 -DFBCVERSION=1050 -m64
>>>> --std=c++0x -g -Wall -Wno-non-virtual-dtor lib/stdc++compat.cpp
>>>> lib/stdc++compat.cpp:46:86: error: no member function
>>>> '_S_construct_aux_2' declared in 'std::__cxx11::basic_string<char>'
>>>>      template char *string::_S_construct_aux_2(size_type, char,
>>>> allocator<char> const&);
>>>>
>>>> ^
>>>> lib/stdc++compat.cpp:48:96: error: no member function
>>>> '_S_construct_aux_2' declared in 'std::__cxx11::basic_string<wchar_t>'
>>>>      template wchar_t *wstring::_S_construct_aux_2(size_type, wchar_t,
>>>> allocator<wchar_t> const&);
>>>>
>>>>                                     ^
>>>> scons: *** [build/lib/stdc++compat.o] Error 1
>>>> scons: building terminated because of errors.
>>>>
>>>>
>>>>
>>>>
>>>>
>>>> On Sun, Feb 26, 2017 at 6:08 AM, <subversion at hamsterrepublic.com>
>>>> wrote:
>>>>
>>>>> teeemcee
>>>>> 2017-02-26 06:08:11 -0800 (Sun, 26 Feb 2017)
>>>>> 94
>>>>> Link in stdc++compat.cpp on Unix. We appear to be compatible with gcc
>>>>> since 3.4 now... really?
>>>>> ---
>>>>> U   wip/SConscript
>>>>> U   wip/lib/stdc++compat.cpp
>>>>> U   wip/ohrbuild.py
>>>>> _______________________________________________
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>>>>> http://lists.motherhamster.org/listinfo.cgi/ohrrpgce-motherhamster.org
>>>>>
>>>>
>>>>
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