In this article, we will delve into the details of fixing the “libgtk-3.so.0 not installed” error in Ubuntu. This error typically arises when the application is unable to find the required shared library. Although you might have installed libgtk-3-0 and libgtk-3-dev packages, the issue could stem from the application being a 32-bit binary running on a 64-bit OS.
To fix the "libgtk-3.so.0 not installed" error in Ubuntu, you need to enable multiarch and install the 32-bit version of the required library. This error usually occurs when a 32-bit application is trying to run on a 64-bit operating system and cannot find the 32-bit version of the necessary libraries.
Understanding the Problem
The error message “libgtk-3.so.0: cannot open shared object file” indicates that the application is trying to access a shared library file that it cannot locate. This issue is most common when a 32-bit application is trying to run on a 64-bit operating system, and it is unable to find the 32-bit version of the required libraries.
Solution: Enable Multiarch and Install the 32-bit Version of the Library
To resolve this error, you need to enable multiarch and install the 32-bit version of the required library. Here’s how you can do it:
Step 1: Enable Multiarch
The first step is to enable multiarch, which allows you to install 32-bit libraries on a 64-bit system. You can do this by running the following command:
sudo dpkg --add-architecture i386In this command, dpkg is the package management command-line tool in Ubuntu. The --add-architecture option allows you to add a new architecture to the list of architectures for which packages can be installed. i386 is the architecture for 32-bit Intel systems.
Step 2: Update Package Lists
Next, you need to update the package lists to ensure that the package manager knows about the new architecture. You can do this by running the following command:
sudo apt updateThe apt command is another package management tool, and update tells it to refresh the package lists.
Step 3: Install the 32-bit Version of libgtk-3-0
Finally, you can install the 32-bit version of the required library by running the following command:
sudo apt install libgtk-3-0:i386Here, install tells apt to install a package, and libgtk-3-0:i386 specifies the 32-bit version of the libgtk-3-0 library.
Testing the Solution
After installing the 32-bit version of the library, try running the application again. It should now be able to find the required shared library and run without any errors.
Troubleshooting Future Issues
If you encounter similar issues in the future, you can check the architecture of the binary using the file command. For example, the output of file ./tmproot/usr/bin/CANMate would indicate whether it’s a 32-bit or 64-bit executable.
Remember that when running 32-bit applications on a 64-bit OS, you may need to enable multiarch and install the corresponding 32-bit libraries to ensure compatibility.
Conclusion
Fixing the “libgtk-3.so.0 not installed” error in Ubuntu involves enabling multiarch and installing the 32-bit version of the required library. By following the steps outlined in this article, you should be able to resolve this error and run your application without any issues.
The "libgtk-3.so.0 not installed" error occurs when the application is unable to find the required shared library. This can happen if the application is a 32-bit binary running on a 64-bit operating system and it cannot locate the 32-bit version of the necessary libraries.
To enable multiarch in Ubuntu, you can run the command sudo dpkg --add-architecture i386. This command adds the i386 architecture, which is the architecture for 32-bit Intel systems, to the list of architectures for which packages can be installed.
You can update the package lists in Ubuntu by running the command sudo apt update. This command refreshes the package lists so that the package manager knows about any new packages or updates.
To install the 32-bit version of libgtk-3-0 in Ubuntu, you can use the command sudo apt install libgtk-3-0:i386. This command tells the package manager to install the specified package, which is the 32-bit version of the libgtk-3-0 library.
You can check the architecture of a binary in Ubuntu using the file command. For example, running file ./tmproot/usr/bin/CANMate will display the architecture of the binary, indicating whether it is a 32-bit or 64-bit executable.
If you encounter similar issues in the future, make sure to check the architecture of the binary and ensure that you have enabled multiarch and installed the necessary 32-bit libraries for compatibility. Following the steps outlined in this article should help resolve similar errors.
