Re: [cdt-dev] Environment variables in external tools

[Jonah Graham <jonah@xxxxxxxxxxxxxxxx>]

Hi Jantje,

The terminology around these variables always causes me much confusion due to the overloaded use of variable and specifically environment variable.

As you may have discovered, "env_var" is for accessing environment variables of the Java process itself (i.e the OS environment variables when Java/Eclipse was launched), the env_var has no knowledge of anything after Eclipse starts, nor any context information. From your comment it does not sound like SLOEBER_HOME (and build.mcu) is from the OS, but rather provided in your code base? 

To make matters worse, environment variables defined in the Environment tab of a launch configuration cannot be referenced using "env_var" in other tabs - see this old bug https://bugs.eclipse.org/bugs/show_bug.cgi?id=170789

Anyway, I am all for a new variable provider that allows accessing such information provided by CDT because I don't know of any existing ones (there may be, perhaps someone else on the list knows?). 

Jonah

~~~
Jonah Graham
Kichwa Coders
www.kichwacoders.com

On Fri, 23 Jul 2021 at 20:51, Jan Baeyens <jan@xxxxxxxxxx> wrote:

Hi team

I was trying to use CDT environment variables in external tools but I failed to get this to work.

I tried using the env_var variable but that did not even return the SLOEBER_HOME system environment variable

Looking into the CDT code I found following resolvers

CBuildDirectoryResolver
ConfigurationInfoVariableResolver (extended by ConfigurationDescriptionVariableResolver ConfigurationNameVariableResolver)
PathEntryVariableResolver

None of these seem to resolve CDT environment variables.

Is there a way to access the environment variables provided by an implementation of IConfigurationEnvironmentVariableSupplier?

If not and I make one; is there an interest to add it to CDT?

Best regards

Jantje

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