How to make CMake reconfiguration depend on custom file?

Question

I have a project under CMake with some files generated with python generator from XML files. I cannot specify all files generated by this generator in CMakeLists.txt so I us

Answer 1

It doesn't require any kind of workarounds. The standard way is to use CMAKE_CONFIGURE_DEPENDS property:

set_property(DIRECTORY APPEND PROPERTY CMAKE_CONFIGURE_DEPENDS <filename>)

Answer 2

Yes, you should be able to do that by (ab)using configure_file(). Configuring a file makes the source a dependency of the CMake run, so that any changes in it cause a reconfiguration. Simply like this:

configure_file(MyInputFile.xml DummyOutput.xml)