find_program(DOXYGEN doxygen)
if (NOT DOXYGEN)
message(STATUS "Target 'doc' disabled (requires doxygen)")
return ()
endif ()
add_custom_target(doc
COMMAND ${CMAKE_CURRENT_SOURCE_DIR}/build.py ${FMT_VERSION}
SOURCES build.py conf.py _templates/layout.html)
install(DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}/html/
DESTINATION share/doc/fmt OPTIONAL)