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iafilatov / libfprint

libfrpint driver for a family of Elantech fingerprint sensors
https://cgit.freedesktop.org/libfprint/libfprint/
GNU Lesser General Public License v2.1
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libfprint.so.0: cannot open shared object file: No such file or directory #34

Open initzx opened 4 years ago

initzx commented 4 years ago

Hi, I am getting this error when i execute fingerprint-identifier or fingerprint-gui.

I have been able to enroll my fingerprint with fprintd-enroll and verify it with fprintd-verify.

How do I fix this?

I have a thinkpad t490s running on kernel 5.6.8-arch1-1.

iafilatov commented 4 years ago

Looks like you haven't installed libfprint after building it: sudo ninja install. If you did that then maybe the shared lib cache hasn't been updated. The safest thing to do is to restart. If it doesn't help, you need to check whether the install prefix, most likely /usr/local/lib, is included in library search path. See /etc/ld.so.conf and/or /etc/ld.so.conf.d/.

Another thing to try is to set $LD_LIBRARY_PATH:

cd /home/you
git clone ... 
cd libfprint
meson build
cd build
ninja
export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:/home/you/libfprint/build/libfprint
fingerptint-gui

(for the current session only)

initzx commented 4 years ago

Hello, it seems that the problem is related to the filename of the object file.

I have libfprint-2.so, but not libfprint.so.0

Aliasing libfprint-2.so does not work very well either.