| NAnt  Help  Task Reference  <mc> | v0.85 | 
Compiles messages using mc.exe, Microsoft's Win32 message compiler.
| Attribute | Type | Description | Required | 
|---|---|---|---|
| mcfile | file | Input filename. | True | 
| headerpath | directory | Path to store header file. The default is the project base directory. | False | 
| options | string | Options to pass to the compiler. | False | 
| rcpath | directory | Path to store RC file. The default is the project base directory. | False | 
| failonerror | bool | Determines if task failure stops the build, or is just reported. The default is true. | False | 
| if | bool | If true then the task will be executed; otherwise, skipped. The default is true. | False | 
| timeout | int | The maximum amount of time the application is allowed to execute, expressed in milliseconds. Defaults to no time-out. | False | 
| unless | bool | Opposite of if. If false then the task will be executed; otherwise, skipped. The default is false. | False | 
| verbose | bool | Determines whether the task should report detailed build log messages. The default is false. | False | 
| Attribute | Type | Description | Required | 
|---|---|---|---|
| exename | string | The name of the executable that should be used to launch the external program. | False | 
| useruntimeengine | bool | Specifies whether the external program should be executed using a runtime engine, if configured. The default is false. | False | 
Represents a command-line argument.
| Attribute | Type | Description | Required | 
|---|---|---|---|
| dir | directory | The value for a directory-based command-line argument; will be replaced with the absolute path of the directory. | False | 
| file | file | The name of a file as a single command-line argument; will be replaced with the absolute filename of the file. | False | 
| if | bool | Indicates if the argument should be passed to the external program. If true then the argument will be passed; otherwise, skipped. The default is true. | False | 
| line | string | List of command-line arguments; will be passed to the executable as is. | False | 
| path | <path> | The value for a PATH-like command-line argument; you can use :or;as path separators and NAnt will convert it to the platform's local conventions, while resolving references to environment variables. | False | 
| unless | bool | Indicates if the argument should not be passed to the external program. If false then the argument will be passed; otherwise, skipped. The default is false. | False | 
| value | string | A single command-line argument; can contain space characters. | False | 
A single command-line argument containing a space character.
<arg value="-l -a" />
    Two separate command-line arguments.
<arg line="-l -a" />
     A single command-line argument with the value \dir;\dir2;\dir3 on DOS-based systems and /dir:/dir2:/dir3 on Unix-like systems. 
<arg path="/dir;/dir2:\dir3" />
     Compile text.mc using the default options. 
<mc mcfile="text.mc"/>
    
         Compile text.mc, passing a path to store the header, the rc file and some additonal options. 
<mc mcfile="text.mc" headerpath=".\build" rcpath=".\build" options="-v -c -u"/>