Symantec WINDOWS INSTALLER EDITOR 8.0 Reference page 68

Windows Installer Editor Reference
4. In MSI Script, add a custom action to set the value of the INSTALLDIR property.
See Defining the INSTALLDIR Property in a Mixed-Platform Installation
5. On the Releases page, create a release for each target platform. Example:
Graphic32, Graphic64.
6. On the Release Settings page, select the features to include in each release.
Example:
7. Compiling the project creates the following .MSIs:
Graphic32.msi, which runs installs only 32-bit components and runs on any
platform. Its Template Summary property is set to Intel, which represents a 32-
bit installation.
Graphic64.msi, which installs both 32-bit and 64-components and runs on x64
platforms only. Its Template Summary property is set to x64.
To organize a mixed-platform project by component
1. On the Features page, create a single set of features and set their target platform to
All Processors. Example:
2. When you add files, registry keys, and other resources to the installation, put both
32-bit and 64-bit items in a single feature. Example: Add both Chart32.exe and
Chart64.exe to the Charting feature.
3. In MSI Script, add a custom action to set the value of the INSTALLDIR property.
See Defining the INSTALLDIR Property in a Mixed-Platform Installation
4. On the Releases page, create a release for each target platform. Example:
Graphic32, Graphic64.
Working With Wise Installation Files
on page 69.
Select the 64-bit release
Select the features to be
installed on 64-bit platforms
on page 69.
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