CMP0040
CMP0040
The target in the TARGET
signature of add_custom_command()
must exist and must be defined in current directory.
CMake 2.8.12 and lower silently ignored a custom command created with the TARGET
signature of 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 登录查看完整内容