How to change Delphi Build configuration?

How to change the Delphi 2009 Build configuration?

The only place I see is on top of the Proje开发者_StackOverflow社区ct Options window, anyway I don't feel that the options are applied.

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Two Ways

From the Project Menu

1. Project > Configuration Manager
2. Select one or more projects from the Applicable projects list.
3. Select the configuration from the Configuration ComboBox.
4. Click the green play button (Makes the configuration active for the project(s) you selected)

From the Project Manager:

1. Click the + next to Build Configurations for the project
2. Double-click the configuration you want to be active.

In either case you need to rebuild the project for the configuration to be applied.

Side note

You can also access build configurations from the command line:

Delphi MSBuild Build Configurations From Command Line