Having an environment variable as a pre-requisite

[msommerville]

The installer I am building is a plug-in for another software package. I need to get the location of this package from an environment variable. How would I go about setting this up as a prerequisite - i.e. if the environment variable is set, proceed, otherwise do not launch.

Any advice would be gratefully accepted.

Malcolm

[Cosmin]

Hi,

I'm afraid that this is not supported by Advanced Installer. The location of the Prerequisite installation package must be given when creating the project. The prerequisite can be included in the installation package or it can be downloaded from a website.

Also, the Detection Criteria of the prerequisite can use only a file version, registry entries, the product version or a custom search performed by an EXE.

Regards,
Cosmin

[Quadiago]

Hi there,

I'm not 100% certain this will help, but at least for XP systems you should be able to find the system and current user's environment variables in the registry (you should be able to use these for prerequisites).

For the current user it is at:

Code: Select all

HKEY_CURRENT_USER\Environment

For the system it is at:

Code: Select all

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Session Manager\
Environment

Regards,

[msommerville]

Hi,

thanks - I should be able to work something using this.

Regards,

Malcolm