On 04/05/2016 04:40, Bruce Dubbs wrote:
> Moving to -dev
>
> -------- Forwarded Message --------
> Subject: Re: Qt4/Webkit
> Date: Tue, 3 May 2016 21:13:13 -0500
> From: Douglas R. Reno <[email protected]>
> To: Bruce Dubbs <[email protected]>
>
> On May 3, 2016 12:35 PM, "Bruce Dubbs" <[email protected]> wrote:
>>
>> Douglas R. Reno wrote:
>>>
>>> Hi Bruce,
>>>
>>> I am going to try a development version of GCC/Binutils/Glibc on my dev
>>> system and see if I can get them to compile properly. If I can get it to
>>> compile, I will look into cherrypicking the fix from whichever package
>>> fixes it. Otherwise, if I still can't get it to work, I am going to try
>>> LLVM/Clang, seeing as Armin got Qt5 to compile with it.
>>>
>>> I honestly believe that our GCC6 implementation was a little bit too
> fast.
>>> But thats just my opinion. Changing that C++ implementation to C++11 as
> the
>>> default, as they did in GCC6, could cause more issues.
>>
>>
>> Yes, major changes cause issues. That's why we have a -dev version of
> the book. If we had an imminent release coming soon, we probably would not
> include it, but as it is, we have four months to clear things up.
>>
>> -- Bruce
>>
>
> It seems that the best option is to use LLVM/Clang to compile it. That
> requires the least changes and is the least invasive (I plan to make them
> tomorrow night. I probably shouldn't have worked on this tonight, but my
> schools website is still unreachable, and as a result, no study materials
> are available at the moment).
>
> For Qt-4.8.7:
>
> Pass CC=clang CXX=clang++ to the configure command
>
> For qtwebkit:
>
> Pass CC=clang CXX=clang++ to the build command.
>
> Some statistics:
>
> At -j1 (Intel Core i5-2400 @ 3.10GHz, 4G DDR3 RAM), the SBU value was 41
> SBUs, taking approximately 4816.1 seconds.
>
> At -j4 (Intel Core i5-2400 @ 3.10GHz, 32G DDR3 RAM), the SBU value was 25
> SBUs, taking approximately 2918.2 seconds (Note: I just copied the build on
> my workstation onto my new development system last night, and I haven't
> remeasured yet. Their hardware specs are pretty much the same though).
>
> I will say that having two development systems makes working on multiple
> projects much easier. I can now work on GNOME and KDE simultaneously, for
> example. The main reason for the 2nd one is that my workstation's hardware
> setup and the development system's hardware setup are almost exactly the
> same, so if something happens to my workstation, that box can take over for
> the time being (and, of course, I can use one to troubleshoot issues with
> the other).
>
> Douglas R. Reno
>
Hi,
I confirm that GCC-6 is not easy to work with: OpenJDK would not build with
it. I do not have CLANG and have no motivation to build it. Furthermore, for
OpenJDK, the variables CC and CXX are not honoured! What I have done (as root):
mv /usr/bin/gcc{,.orig}
cat >/usr/bin/gcc << EOF
#!/bin/bash
gcc -std=c99 "\$@"
EOF
mv /usr/bin/g++{,.orig}
cat >/usr/bin/g++ << EOF
#!/bin/bash
gcc -std=c99 "\$@"
EOF
But that's not enough. The compilation goes to completion, but all the
compiled executables segfault
Downgrading to gcc-5.3 allowed to build. Tests are currently running, but at
least, the executables seem to run.
Regards,
Pierre
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