Introduction:

In the realm of programming languages, COBOL (Common Business-Oriented Language) holds a significant place in the history of computing. Developed in the late 1950s, COBOL has long been used for business and administrative systems. Despite its age, COBOL continues to power critical applications in various industries, including finance, government, and healthcare. To keep up with the evolving technology landscape, a modern implementation of COBOL was required, leading to the development of GnuCOBOL. In this blog post, we will explore what GnuCOBOL is, who created it, and how individuals can leverage its capabilities.

1. What is GnuCOBOL?

GnuCOBOL, formerly known as OpenCOBOL, is a free and open-source compiler for the COBOL programming language. It provides a modern and flexible environment for developing COBOL applications. GnuCOBOL adheres to the ANSI 85 COBOL standard while also offering additional features and enhancements. The primary goal of GnuCOBOL is to bridge the gap between legacy COBOL codebases and modern computing platforms.

2. Origins and Creators:

GnuCOBOL was created as an open-source project by a team of dedicated developers aiming to breathe new life into COBOL programming. It is a part of the GNU Project and is maintained and distributed under the GNU General Public License (GPL). The project was initiated by Keisuke Nishida in 2001, and since then, numerous contributors from around the world have joined the effort to improve and expand the capabilities of GnuCOBOL.

3. Features and Advantages:

a. Cross-platform Compatibility: GnuCOBOL is designed to run on various operating systems, including Linux, Windows, macOS, and UNIX-like systems. This cross-platform compatibility allows developers to write COBOL code on their preferred environment without being tied to a specific operating system.

b. Modern Syntax and Standards Compliance: GnuCOBOL supports the ANSI 85 COBOL standard, ensuring that legacy COBOL code can be easily compiled and executed. Moreover, it provides support for modern COBOL features and syntax, allowing developers to write cleaner and more maintainable code.

c. Integration with Other Languages: GnuCOBOL can be seamlessly integrated with other programming languages, such as C, C++, and Java. This feature enables developers to leverage the strengths of different languages and libraries while working on COBOL projects.

d. Strong Community Support: GnuCOBOL has an active and passionate community of developers who contribute to its development, provide support, and share their knowledge. This vibrant community ensures that GnuCOBOL remains up-to-date and offers a wealth of resources for individuals looking to learn or enhance their COBOL skills.

4. Getting Started with GnuCOBOL:

If you’re an individual interested in exploring GnuCOBOL, here’s a step-by-step guide to help you get started:

Step 1: Installation

• Visit the official GnuCOBOL website (https://gnucobol.sourceforge.io/) to download the latest version of GnuCOBOL for your operating system.
• Follow the installation instructions provided to set up GnuCOBOL on your machine.

Step 2: Writing Your First Program

• Launch your preferred text editor or Integrated Development Environment (IDE) and create a new file with a .cob extension (e.g., hello.cob).
• Begin your program with the identification division followed by the program-id statement to specify the name of your program.
• Start the procedure division where you will write the main logic of your program.

Step 3: Compile and Execute

• Open your terminal or command prompt and navigate to the directory where your COBOL program is saved.
• Use the cobc command (provided by GnuCOBOL) to compile your COBOL program into an executable file. For example, cobc -x hello.cob will generate an executable file named hello.
• Run the executable file by executing the generated binary file. For instance, ./hello (on Linux/macOS) or hello.exe (on Windows).

Step 4: Learning Resources

• Explore the GnuCOBOL documentation available on the official website, including the language reference manual, FAQs, and tutorials.
• Join online forums, discussion boards, and mailing lists dedicated to COBOL and GnuCOBOL to interact with the community and seek assistance when needed.
• Look for sample programs and code repositories on platforms like GitHub to gain insights into real-world COBOL applications.

Here are step-by-step instructions to install GnuCOBOL on different operating systems:

Note: As of my knowledge, these instructions should work. However, it’s always a good idea to check the official GnuCOBOL website for the latest installation instructions.

1. Install GnuCOBOL on Linux:

a. Debian/Ubuntu-based systems:

Open a terminal and run the following commands:

sudo apt install gnucobol

b. Fedora-based systems:

Open a terminal and run the following command:

sudo dnf install gnucobol

c. Arch Linux-based systems:

Open a terminal and run the following command:

sudo pacman -S gnucobol

2. Install GnuCOBOL on macOS:

a. Using Homebrew:

If you have Homebrew installed, open a terminal and run the following command:

brew install gnucobol

3. Install GnuCOBOL on Windows:

a. Using Cygwin:

Cygwin is a Unix-like environment for Windows. To install GnuCOBOL using Cygwin, follow these steps:

1. Download and run the Cygwin installer from the official website: https://www.cygwin.com/install.html
2. During the installation, select “Install from Internet” and choose a temporary directory and the package installation directory.
3. In the package selection screen, search for “gnucobol” and select it for installation.
4. Complete the installation process.

b. Using Mingw-w64:

Mingw-w64 is a development environment for Windows. To install GnuCOBOL using Mingw-w64, follow these steps:

1. Download and run the Mingw-w64 installer from the official website: https://mingw-w64.org/doku.php/download
2. During the installation, choose “Architecture” (32-bit or 64-bit) and “Threads” (posix or win32) according to your system configuration.
3. In the component selection screen, make sure to select “mingw32-base” and “mingw32-gnucobol” for installation.
4. Complete the installation process.

4. Verify the Installation:

After installing GnuCOBOL, you can verify the installation by running the following command in the terminal or command prompt:

cobc --version

This command should display the version of GnuCOBOL installed on your system.

That’s it! You have successfully installed GnuCOBOL on your operating system. Now, you can start writing and running COBOL programs using GnuCOBOL.

Conclusion:

GnuCOBOL serves as a valuable tool for modernizing and developing COBOL applications. By providing a free and open-source compiler, it enables individuals to leverage COBOL’s strengths while embracing modern programming paradigms and integrating with other languages. With its active community, GnuCOBOL offers resources and support to individuals looking to embark on a COBOL programming journey or enhance their existing skills. As COBOL continues to play a critical role in numerous industries, GnuCOBOL empowers developers to work efficiently and effectively in the ever-evolving technological landscape.