Hi,

Would it be possible to provide more details ? I just tried on Linux using 4.2.2-1 and on both Linux and MacOSX using the Nightly and it worked without any issue.

cd Projects
ln -s /path/to/Slicer-4.2.2-1-linux-amd64/Slicer Slicer4
./Slicer4

Which platform / OS are you using ?

The launcher code in charge of resolving the symlink target is the following: https://github.com/commontk/AppLauncher/blob/c1ba69aa0b7cfccbc59e4fc430bb8d63f8ef750c/Base/ctkAppLauncher.cpp#L383-408

Hmm, it seems this only happens when the symlink already exists and after a while it goes away. I am guessing it is some sort of NFS caching issue. You can go ahead and close the issue. Thank you and sorry for the noise.

Hmm, scratch that. I still have the issue but for some reason it was masked by having created a symlink in my current working directory while testing (even though I was calling the one on my PATH).

Your test case does not cause the problem for me, however I can reliably recreate this with:

$ mkdir /path/to/test_bin
$ export PATH=/path/to/test_bin:$PATH
$ ln -s /path/to/Slicer-4.2.2-1-linux-amd64/Slicer /path/to/test_bin/SlicerTest
$ SlicerTest
error: Failed to obtain launcher executable name !

This is on Linux.

This bug also prevents adding "Slicer" binary to the PATH variable (with or without symlinks). It's especially problematic if one would like to use CLI modules using the "Slicer --launch" syntax.

Yes, I think the primary issue is launching Slicer through the PATH and symlinks are not actually the problem.

I've just tested symliking and it works - it is only the problem with PATH.

Here is a topic that is addressing the problem: https://github.com/jcfr/AppLauncher/compare/commontk:master...39-support-launcher-symlink-in-path

Associated issue: https://github.com/commontk/AppLauncher/issues/39

This will soon be integrated to CTKAppLauncher master. Then, after releasing a new set of launcher packages and updated Slicer to use these ... the problem should be fixed.

Fixed in r22389
See http://viewvc.slicer.org/viewvc.cgi/Slicer4?view=revision&revision=22389

Closing resolved issues that have not been updated in more than 3 months

Fix committed to 2145-support-for-installing-extension-from-file branch.