ENVIRONMENT_MODIFICATIONΒΆ

New in version 3.22.

Specify environment variables that should be modified for running a test. Note that the operations performed by this property are performed after the ENVIRONMENT property is already applied.

If set to a list of environment variables and values of the form MYVAR=OP:VALUE, where MYVAR is the case-sensitive name of an environment variable to be modified. Entries are considered in the order specified in the property's value. The OP may be one of:

  • reset: Reset to the unmodified value, ignoring all modifications to MYVAR prior to this entry. Note that this will reset the variable to the value set by ENVIRONMENT, if it was set, and otherwise to its state from the rest of the CTest execution.

  • set: Replaces the current value of MYVAR with VALUE.

  • unset: Unsets the current value of MYVAR.

  • string_append: Appends VALUE to the current value of MYVAR.

  • string_prepend: Prepends VALUE to the current value of MYVAR.

  • path_list_append: Appends VALUE to the current value of MYVAR using the host platform's path list separator (; on Windows and : elsewhere).

  • path_list_prepend: Prepends VALUE to the current value of MYVAR using the host platform's path list separator (; on Windows and : elsewhere).

  • cmake_list_append: Appends VALUE to the current value of MYVAR using ; as the separator.

  • cmake_list_prepend: Prepends VALUE to the current value of MYVAR using ; as the separator.

Unrecognized OP values will result in the test failing before it is executed. This is so that future operations may be added without changing valid behavior of existing tests.

The environment changes from this property do not affect other tests.