Adds option COMMAND_EXPAND_LISTS to add_custom_command and add_custom_target
This option allows lists generated by generator expressions passed as the COMMAND
of add_custom_command
and add_custom_target
to be expanded.
This addresses the fact that the example in the [OUTPUT EXPRESIONS][1] section of the generator expression documentation gives the following example:
-I$<JOIN:$<TARGET_PROPERTY:INCLUDE_DIRECTORIES>, -I>
But this example cannot be made to work as expected when used as a custom COMMAND
. This merge request allows it to work when modified as follows and when the new option is used:
"-I$<JOIN:$<TARGET_PROPERTY:INCLUDE_DIRECTORIES>,;-I>"
or
-I$<JOIN:$<TARGET_PROPERTY:INCLUDE_DIRECTORIES>,$<SEMICOLON>-I>
Related to #14353 (closed) implementing the functionality of the module attached to the original mantis issue much more cleanly with direct support in cmake. [1]: https://cmake.org/cmake/help/v3.7/manual/cmake-generator-expressions.7.html#output-expressions