About the component compiler options

The component compiler options let you define settings such as the classes, resources, and namespaces to include in the resulting SWC file.

The component compiler can take most of the application compiler options, and the options described in this section. For a description of the application compiler options, see About the application compiler options. Application compiler options that do not apply to the component compiler include the metadata options (such as contributor, title, and date), default application options (such as default-frame-rate), locale, debug-password, and theme.

The component compiler has compiler options that the application compilers do not have. The following table describes the component compiler options that are not used by the application compilers:




Writes a digest to the catalog.xml of a library. Use this when the library will be used as a cross-domain RSL or when you want to enforce the versioning of RSLs. The default value is true.

For more information about RSLs, see Runtime Shared Libraries.


Outputs the SWC file in an open directory format rather than a SWC file. You use this option with the output option to specify a destination directory, as the following example shows:

compc -directory=true -output=destination_directory

You typically use this option when you create RSLs because you must extract the library.swf file from the SWC file before deployment. For more information, see Runtime Shared Libraries.

The default value is false.

include-classes class [...]

Specifies classes to include in the SWC file. You provide the class name (for example, MyClass) rather than the file name (for example, MyClass.as) to the file for this option. As a result, all classes specified with this option must be in the compiler’s source path. You specify this by using the source-path compiler option.

You can use packaged and unpackaged classes. To use components in namespaces, use the include-namespaces option.

If the components are in packages, ensure that you use dot-notation rather than slashes to separate package levels.

This is the default option for the component compiler.

include-file name path [...]

Adds the file to the SWC file. This option does not embed files inside the library.swf file. This is useful for adding graphics files, where you want to add non-compiled files that can be referenced in a style sheet or embedded as assets in MXML files.

If you add a stylesheet that references compiled resources such as programmatic skins, use the include-stylesheet option.

If you use the [Embed] syntax to add a resource to your application, you are not required to use this option to also link it into the SWC file.

For more information, see Adding nonsource classes.


If true, only manifest entries with lookupOnly=true are included in the SWC catalog. The default value is false.

This is an advanced option.

include-namespaces uri [...]

Specifies namespace-style components in the SWC file. You specify a list of URIs to include in the SWC file. The uri argument must already be defined with the namespace option.

To use components in packages, use the include-classes option.

include-sources path-element

Specifies classes or directories to add to the SWC file. When specifying classes, you specify the path to the class file (for example, MyClass.as) rather than the class name itself (for example, MyClass). This lets you add classes to the SWC file that are not in the source path. In general, though, use the include-classes option, which lets you add classes that are in the source path.

If you specify a directory, this option includes all files with an MXML or AS extension, and ignores all other files.

If you use this option to include MXML components that are in a non-default package, you must include the source folder in the source path.

include-stylesheet namepath [...]

Specifies stylesheets to add to the SWC file. This option compiles classes that are referenced by the stylesheet before including the stylesheet in the SWC file.

You do not need to use this option for all stylesheets; only stylesheets that reference assets that need to be compiled such as programmatic skins or other class files. If your stylesheet does not reference compiled assets, you can use the include-file option.

This option does not compile the stylesheet into a SWF file before including it in the SWC file. You compile a CSS file into a SWF file when you want to load it at run time.

On the command line, you cannot point the compc utility to a single directory and have it compile all components and source files in that directory. You must specify each source file to compile.

If you have a large set of components in a namespace to include in a SWC file, you can use a manifest file to avoid having to type an unwieldy compc command. For information on creating manifest files, see About manifest files.

The following sections describe common scenarios where you could use the compc command-line compiler. You can apply the techniques described here to compiling SWC files in Flash Builder with the Flex Compiler.