Error While loading shared libraries libstdc++.so.5

Question

I'm attempting to run a program called GlimmerHMM, however when I try to call the program I get this error:

./glimmerhmm_linux
./glimmerhmm_linux: error while loading shared libraries: libstdc++.so.5: cannot open shared object file: No such file or directory

So I tried downloading and installing:

sudo apt-get install libstdc++5
Reading package lists... Done
Building dependency tree       
Reading state information... Done
The following packages were automatically installed and are no longer required:
html2text libmail-sendmail-perl libsys-hostname-long-perl
Use 'apt-get autoremove' to remove them.
The following NEW packages will be installed: libstdc++5
0 upgraded, 1 newly installed, 0 to remove and 183 not upgraded.
Need to get 255 kB of archives.
After this operation, 1,155 kB of additional disk space will be used.
Get:1 http://archive.ubuntu.com/ubuntu/ precise/universe libstdc++5 amd64 1:3.3.6-25ubuntu1 [255 kB]
Fetched 255 kB in 4s (54.0 kB/s)                     
Selecting previously unselected package libstdc++5.
(Reading database ... 176303 files and directories currently installed.)
Unpacking libstdc++5 (from .../libstdc++5_1%3a3.3.6-25ubuntu1_amd64.deb) ...
Setting up libstdc++5 (1:3.3.6-25ubuntu1) ...
Processing triggers for libc-bin ...
ldconfig deferred processing now taking place

But I still get the same error when calling the program. Thanks in advance!

Solution

I was trying to get one legacy application working and noticed that with Ubuntu 20.04 one needs to add i386 architecture, before one can install i386 libraries.

sudo dpkg --add-architecture i386
sudo apt update
sudo apt install libstdc++5:i386

# libstdc++.so.5 shows up.
ls -la /usr/lib/i386-linux-gnu/libstdc++.so.5
lrwxrwxrwx 1 root root 18 Apr 11  2020 /usr/lib/i386-linux-gnu/libstdc++.so.5 -> libstdc++.so.5.0.7