INDEPENDENT_FILES

Added in version 4.4.

INDEPENDENT_FILES is a boolean specifying that any GENERATED sources in the file set are not necessary for the compilation of other sources in the same target. Stated another way, these files are "independent" and their presence is never necessary for compilation of other sources (e.g., via #include).

When this property is ON, Ninja Generators will omit conservative order-only dependencies that prevent a target's source files from compiling before custom commands from the target's dependencies are finished, even if those custom commands only produce sources independent from other sources in the same target. When this property is OFF, Ninja Generators will apply conservative order-only dependencies that prevent a target's source files from compiling before custom commands from the target's dependencies are finished, even if those custom commands only produce sources independent from other sources in the same target.

If this property is not defined, the following default will be applied: * ON for CXX_MODULES file set type. * OFF for all other file set types.

In the case of the CXX_MODULES file set type, the only supported mode is ON. So if the property is set to OFF, it will be ignored.

In the case of the HEADERS file set type, if the property is ON, an author warning will be emit because this mode is not supported.

This property is effective only when the policy CMP0154 is NEW.