ImportError: libtcl8.5.so: cannot open shared object file: No such file or directory

[gbrown40]

When trying to run files that use opendbpy, I get this error: Traceback (most recent call last): File "src/odb/test/python/08-write_lef_and_def_test.py", line 1, in <module> import opendbpy as odb File "/usr/local/lib/python3.8/dist-packages/opendbpy/__init__.py", line 1, in <module> from ._opendbpy import * ImportError: libtcl8.5.so: cannot open shared object file: No such file or directory libtcl8.5 appears to be obsolute, so I cannot install it, and installing libtcl8.6 does not fix the issue.

[maliberty]

Did you build OR youself? If so, you must have it installed or you couldn't have linked OR in the first place.

[gbrown40]

I have built OR successfully both by hand and with the support script.

[maliberty]

Then your LD_LIBRARY_PATH needs to point to the location of your tcl library.

[gbrown40]

I don't think the tcl library is installed. At least I cannot find it in /usr/local/lib or anywhere else.

[maliberty]

You couldn't have built OR if it wasn't installed. When you run cmake do you see a line like:

-- TCL library: /usr/lib64/libtcl.so

[gbrown40]

Found it. I added it to the path, but am still getting the same error. I think because the version of libtcl installed when building is 3.6.

[maliberty]

The cmake line above should tell you which one is being picked up. You can also use ldd on the executable to see what it is expecting.

[gbrown40]

When running cmake, it lists TCL library: /usr/lib/x86_64-linux-gnu/libtcl.so, but looking in /usr/lib/x86_64-linux-gn it lists libtcl.so and libtcl8.6.so. Running ldd on the executable shows "libtcl8.5.so => not found".

[maliberty]

When it links openroad you can see the -L and -l it uses for tcl. What do you see?

[gbrown40]

I don't see -L or -l anywhere in the build process.

[maliberty]

Do you see a line with "-o openroad"? That is the link line, look for a mention of libtcl

[gbrown40]

It lists /usr/lib/x86_64-linux-gnu/libtcl.so

[maliberty]

Are you running ldd on the same binary? That's what it is linked with...

[gbrown40]

Running ldd for the openroad executable shows libtcl8.6.so => /usr/lib/x86_64-linux-gnu/libtcl8.6.so. The issue is with opendbpy which appears to want libtcl8.5.so

[maliberty]

What commit of OR are you using?

[vvbandeira]

/usr/local/lib/python3.8/dist-packages/opendbpy/__init__.py

@gbrown40 did you install opendbpy with pip install or similar? This looks to be getting a system version of opendbpy not the version you built from the OR source code.

[gbrown40]

@vvbandeira I used pip to install opendbpy

[gbrown40]

@maliberty I currently have commit 49fdec96d3cefaa9e5c3b39b6dd1e33bcc7f0d24 from August 3.

[vvbandeira]

Hi @gbrown40, could you try with the latest commit. We recently merged #2375 which might help your issue. Also, you probably should remove the pip version since is very old -- it has not been updated in over a year.

[vvbandeira]

Closing due to lack of activity. Please open a new issue in case the problem is still relevant and occurring with the latest commit.