(In reply to Christophe Giboudeaux from comment #2) > > From reading FindPythonInterp I recommend you look at the following. > > > > # The Python_ADDITIONAL_VERSIONS variable can be used to specify a list > > # of version numbers that should be taken into account when searching > > # for Python. You need to set this variable before calling > > # find_package(PythonInterp). > > That's what cantor does already: > set(Python_ADDITIONAL_VERSIONS 2.7) > find_package(PythonLibs 2.7) > Note that this won't help, FindPythonInterp is already called by a build dependency. (but that gives me an idea to work around the regression)