I recently downloaded a binary package that once installed failed to start due to a missing libpcre.so.3 lib. After inspection I noticed that I had libpcre installed matching the requirements however libpcre.so.3 was not available. I also noticed that the current libpcre is listed as belonging to SLOT number 3.
I'm not familiar with library naming but to my current problem symlinking libpcre.so.0.0.1 to libpcre.so.3 was enough to solve it.
Is this symlink something that should be included in the ebuild?
No, the package should be recompiled to get its ABI in line with the one on disk. Unfortunately binary packages can't be recompiled. If you are certain it just works with the symlink, you could create a wrapper script for the binary program and launch it like this:
Resolving as invalid, since this strictly speaking isn't a bug with Gentoo.
Thanks for the explanation.