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Edit environment variables and start project build automatically with Python [message #1828248]

Thu, 04 June 2020 21:08

M Saad Sh

Messages: 3
Registered: June 2020

Junior Member

I have a C++ Eclipse project.

With an every new software cycle at my organization, I need to update the environment variables and build the project.
E.g. change SW_Path from "C:/Installation/2019B" to "C:/Installation/2020A" and then build the project.

Till now I have done this manually, but now the requirement is to automate the entire process. I couldn't find relevant resources about the topic. Searching for Eclipse API showed the results only for Java.

Any tips how can I simply update the environment variables and build the project automatically with Python (or maybe even using a batch file)? Without having any manual involvement.

Thanks in advance.

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Re: Edit environment variables and start project build automatically with Python [message #1828253 is a reply to message #1828248]

Fri, 05 June 2020 04:58

Ed Merks

Messages: 33139
Registered: July 2009

Senior Member

Where are these environment variables stored? I.e., where specifically do you go to change them? Perhaps using Oomph you can automate the entire process of setting up a specific development environment along with a workspace containing the specific things you want.

https://wiki.eclipse.org/Eclipse_Oomph_Authoring

Ed Merks
Professional Support: https://www.macromodeling.com/

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Re: Edit environment variables and start project build automatically with Python [message #1828261 is a reply to message #1828253]

Fri, 05 June 2020 07:27

Rolf Theunissen

Messages: 260
Registered: April 2012

Senior Member

If the environment variables are not related to the IDE but to your project, i.e. specific to the build tooling of your project and check in to the repository, Oomph might not be the best fit. In that case I would suggest that you ask the question on the CDT forum [1] or look into the documentation of your build configuration.

[1] https://www.eclipse.org/forums/index.php/f/80/

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Re: Edit environment variables and start project build automatically with Python [message #1828267 is a reply to message #1828261]

Fri, 05 June 2020 09:03

M Saad Sh

Messages: 3
Registered: June 2020

Junior Member

Sorry, I don't know the exact correct terminology but I set the environment variables from the project Properties as shown below:
https://ibb.co/F061XPc

And the project build from here:
https://ibb.co/MBRsKdV

Somehow, I was able to find the environment variables that I set in the project Properties in the following file in ".settings" folder:
https://ibb.co/wWdWYnH

But still I am not sure how should I proceed to update the environment variables and build the project with some script.
Does this topic belong here or should I ask in CDT forum as Rolf said?

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Re: Edit environment variables and start project build automatically with Python [message #1828270 is a reply to message #1828267]

Fri, 05 June 2020 10:40

Ed Merks

Messages: 33139
Registered: July 2009

Senior Member

Note that when you edit the variable, you can enter a value or you can use the "Variables" button. There are lots of variables you can use, but most significantly, if you go to Window -> Preferences -> Run/Debug -> String Substitutions you can define variables here, i.e., a mapping from name, e.g., my.example.variable , to value, e.g., C:\Something-really-important. Then in the other dialog where you edit the environment variable, you can find "my.example.value" in the list of variable choices and can use ${my.example.value} as the value. This then decouples the information stored in the project from the configurable value it should have. (And, for what it's worth, Oomph lets you define String Substitution Tasks for setting up such values automatically.)

Ed Merks
Professional Support: https://www.macromodeling.com/

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