Using X11 for an older program

[Dominik Reichardt]

Hi,

download and install xquartz from https://www.xquartz.org <https://www.xquartz.org/>. This is the semi-official X11.app replacement. Did not get an update for four years now but it brings the needed libraries and installs in /opt/x11.

Good luck! :)

Dominik

> On 22. Dec 2020, at 08:50, Michael <keybounce at gmail.com> wrote:
> 
> 
> On 2020-12-21, at 8:38 PM, Ken Cunningham <ken.cunningham.webuse at gmail.com> wrote:
> 
>> A thought — perhaps you might just take the easy road, and install the libraries it is looking for, in /opt/X11
>> 
>> what is that, XQuartz? 
> 
> Except that the current version of XQuartz is, as I understand it, what Macports provides.
> 
> i.e. -- my choice is either an 8 year old apple build, or a current Macport build.
> 
> (If I'm wrong here, please tell me.)
> 
>> 
>> K
>> 
>>> On Dec 21, 2020, at 7:01 PM, Michael <keybounce at gmail.com> wrote:
>>> 
>>> OK. Next question: Is there any reason I cannot install libpng version 15 at the sametime?
>>> 
>>> I am aware that there is a non-versioned link file, that the latest version of the dynamic library installs. That can stay at 16 where it belongs. I mean specifically having both the libpng15 and the libpng16 files.
>>> 
>>> I am very surprised at linking to a specific version of a dynamic library. This is actually commercial software, and it did not link to generic "libpng", nor to generic "libpng15" -- linking to a specific version of a dynamic library? Isn't the whole point of dynamic libraries that you don't get a single specific buggy version, but the latest non-buggy version?
>>> 
>>> On 2020-12-21, at 6:55 PM, Ken Cunningham <ken.cunningham.webuse at gmail.com> wrote:
>>> 
>>>>> On 2020-12-21, at 10:55 AM, Michael <keybounce at gmail.com> wrote: > This should be a simple one. I hope. 
>>>>>> 
>>>>>> I just installed a program that was compiled against the release version of mac's X11. Crashes on startup with this: 
>>>>>> 
>>>>>> dyld: launch, loading dependent libraries 
>>>>>> 
>>>>>> Dyld Error Message: 
>>>>>> Library not loaded: /opt/X11/lib/libpng15.15.dylib 
>>>>>> 
>>>>>> What symbolic links do I need? /opt has no X11 directory. 
>>>>> Ok, another question. I found this: /opt/local/lib/libpng16.16.dylib I cannot find the older version. What do I need to do to install both the current and the older version of this library at the same time? 
>>>> 
>>>> There are likely to be more libraries missing after you fix this one, but you can try.
>>>> 
>>>> EIther symlink a real library that is the same or as similar as you have into the position being looked for:
>>>> 
>>>> sudo ln -s /opt/local/lib/libpng16.16.dylib /opt/X11/lib/libpng15.15.dylib
>>>> 
>>>> or
>>>> 
>>>> use install_name_tool to change /opt/local/lib/libpng16.16.dylib to /opt/X11/lib/libpng15.15.dylib in your binary.
>>>> 
>>>> install_name_tool -change  /opt/local/lib/libpng16.16.dylib /opt/X11/lib/libpng15.15.dylib /path/to/my/binary
>>>> 
>>>> 
>>>> You can see that there are many many ways this could break / not work at all. 
>>>> 
>>>> But it sometimes works, if you’re lucky, and the libraries are very close to what is being looked for.
>>>> 
>>>> K
>>> 
>>> ---
>>> This message was composed with the aid of a laptop cat, and no mouse
>>> 
>> 
> 
> ---
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