| Attribute | Description | Required |
|---|
| outdir | Output directory for the compilation target. If the directory does not exist, the task will create it. | False |
| project | Visual Basic project or group file. | True |
| checkreferences | Determines whether project references are checked when deciding whether the project needs to be recompiled (true/false). | False |
| errorfile | Errorfile | True |
| failonerror | Determines whether task failure stops the build or is just reported. Default is "true." | False |
| verbose | Task reports detailed build log messages. Default is "false." | False |
| if | If true then the task will be executed; otherwise skipped. Default is "true." | False |
| unless | Opposite of if. If false then the task will be executed; otherwise skipped. Default is "false." | False |