LANGUAGE

Added in version 4.5.

Specify the language used to compile members of a SOURCES file set.

This property selects the language whose compiler and compilation rules are used for members of the file set when building a target. It takes precedence over both the LANGUAGE source file property and language selection based on the file extension, without modifying the source file property.

The selection applies to targets that compile sources from the file set, including targets that inherit those sources through linked target interfaces. This allows the same source file to be compiled using different languages' compilers and compilation rules in different targets.

The value must be a literal language name. Generator expressions and appending values are not supported. The named language must be enabled by a project() or enable_language() command.

This property can also be specified for file sets of custom rules as defined by the add_custom_rule() command. In this case, the semantic attached to this property is defined by the custom rule.