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? K > On Dec 21, 2020, at 7:01 PM, Michael <keybou...@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.web...@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 >
