Getting Started with Eiffel

 Goals:
        Install Eiffel
        Create, compile and execute our first Eiffel Program.

Installing Eiffel is just as easy as installing other languages, below I will show you how to install EiffelStudio using two options: Installation Scripts or download files and set the environment variables.

EiffelStudio installation scripts

Using the installation scripts https://www.eiffel.org/setup provides a simple way to install EiffelStudio.

Getting the GPL files from Eiffel.org

Download and unzip Eiffel.zip from https://www.eiffel.org/downloads.

Create the following environment variables

Windows

EiffelStudio supports Microsoft and MinGW compilers on Microsoft Windows. To learn more read the following post-https://www.eiffel.org/doc/eiffelstudio/Supported%20C%20compilers

ISE_C_COMPILER=  set to mingw or msc, msc_vc140 if you use VisualStudio 2015 or later
ISE_EIFFEL= to the path where you extracted Eiffel_X.Y folder
ISE_PLATFORM= to win64 or windows

Add  %ISE_EIFFEL%\studio\spec\%ISE_PLATFORM%\bin to the PATH and also
%ISE_EIFFEL%\tools\spec\%ISE_PLATFORM%\bin .

Checking the Eiffel version.

ec -version 
ISE EiffelStudio version 18.01.10.1424 GPL Edition - win64

Linux

On Linux, it is quite similar. First, you will need to download the EiffelStudio file for Linux.
Decompress the file using the following command.

tar xf  Eiffel_18.01_gpl_101424-linux-x86-64.tar.bz2

using gedit or vi

gedit ~/.bashrc

set the following environment variables .

export ISE_EIFFEL=/home/dev/Eiffel_18.01
export ISE_PLATFORM=linux-x86-64 or linux-x86
export PATH=$PATH:$ISE_EIFFEL/studio/spec/$ISE_PLATFORM/bin

Checking Eiffel Version

ec -version
ISE EiffelStudio version 18.01.10.1424 GPL Edition - linux-x86-64

Writing your first Eiffel program

Creating a project in EiffelStudio, now you will learn how to create a basic project in EiffelStudio

Open EiffelStudio from the command line type estudio

Select Basic Application (no graphics library included) and click create

You can Select a System name, Root Cluster, Root Class, Root Feature and Location and click OK.
At this moment let them with the default values

Now we have our first project created and compiled, for this little example we will use Workbench mode.
To learn more about Eiffel types of compilation and executions read the following blog eiffel compilation.

Running

Now it's time to execute our first application

Click the run button or just use the short-cut Ctrl + Alt + F5, our program will print Hello Eiffel World! to the console.

Conclusion

We've learned how to install EiffelStudio and how to create and run a basic application that prints the famous Hello World.

Finally to learn more about the EiffelStudio compiler Technology read the following blog post- https://www.eiffel.org/doc/eiffelstudio/Compiler

[Eiffel Tips] Getting Started with Eiffel