Help/policy/CMP0040.rst
.. |REMOVED_IN_CMAKE_VERSION| replace:: 4.0 .. include:: include/REMOVED_PROLOGUE.rst
The target in the TARGET signature of :command:add_custom_command
must exist and must be defined in the current directory.
CMake 2.8.12 and lower silently ignored a custom command created with
the TARGET signature of :command:add_custom_command
if the target is unknown or was defined outside the current directory.
The OLD behavior for this policy is to ignore custom commands
for unknown targets. The NEW behavior for this policy is to report
an error if the target referenced in :command:add_custom_command is
unknown or was defined outside the current directory.
.. |INTRODUCED_IN_CMAKE_VERSION| replace:: 3.0 .. |WARNED_OR_DID_NOT_WARN| replace:: warned .. include:: include/REMOVED_EPILOGUE.rst