type module Deals with target type declaration and defines target class which supports typed targets. register type rule register ( type : suffixes * : base-type ? ) Registers a target type, possible derived from a base-type. Providing a list of suffixes here is a shortcut for separately calling the register-suffixes rule with the given suffixes and the set-generated-target-suffix rule with the first given suffix. register-suffixes rule register-suffixes ( suffixes + : type ) Specifies that files with suffix from suffixes be recognized as targets of type type. Issues an error if a different type is already specified for any of the suffixes. registered rule registered ( type ) Returns true iff type has been registered. validate rule validate ( type ) Issues an error if type is unknown. set-scanner rule set-scanner ( type : scanner ) Sets a scanner class that will be used for this type. get-scanner rule get-scanner ( type : property-set ) Returns a scanner instance appropriate to type and property-set. base rule base ( type ) Returns a base type for the given type or nothing in case the given type is not derived. all-bases rule all-bases ( type ) Returns the given type and all of its base types in order of their distance from type. all-derived rule all-derived ( type ) Returns the given type and all of its derived types in order of their distance from type. is-derived rule is-derived ( type base ) Returns true if type is equal to base or has base as its direct or indirect base. set-generated-target-suffix rule set-generated-target-suffix ( type : properties * : suffix ) Sets a file suffix to be used when generating a target of type with the specified properties. Can be called with no properties if no suffix has already been specified for the type. The suffix parameter can be an empty string ("") to indicate that no suffix should be used. Note that this does not cause files with suffix to be automatically recognized as being of type. Two different types can use the same suffix for their generated files but only one type can be auto-detected for a file with that suffix. User should explicitly specify which one using the register-suffixes rule. change-generated-target-suffix rule change-generated-target-suffix ( type : properties * : suffix ) Change the suffix previously registered for this type/properties combination. If suffix is not yet specified, sets it. generated-target-suffix rule generated-target-suffix ( type : property-set ) Returns the suffix used when generating a file of type with the given properties. set-generated-target-prefix rule set-generated-target-prefix ( type : properties * : prefix ) Sets a target prefix that should be used when generating targets of type with the specified properties. Can be called with empty properties if no prefix for type has been specified yet. The prefix parameter can be empty string ("") to indicate that no prefix should be used. Usage example: library names use the "lib" prefix on unix. change-generated-target-prefix rule change-generated-target-prefix ( type : properties * : prefix ) Change the prefix previously registered for this type/properties combination. If prefix is not yet specified, sets it. generated-target-prefix rule generated-target-prefix ( type : property-set ) Returns the prefix used when generating a file of type with the given properties. type rule rule type ( filename ) Returns file type given its name. If there are several dots in filename, tries each suffix. E.g. for name of "file.so.1.2" suffixes "2", "1", and "so" will be tried.