find_program(SPHINX_EXECUTABLE NAMES sphinx-build
    PATHS
    $ENV{VIRTUAL_ENV}
    PATH_SUFFIXES bin
    DOC "Sphinx documentation generator"
)
 
include(FindPackageHandleStandardArgs)
find_package_handle_standard_args(Sphinx DEFAULT_MSG
    SPHINX_EXECUTABLE
)
 
mark_as_advanced(SPHINX_EXECUTABLE)
