include(CheckSymbolExists) check_symbol_exists(mkstemp "stdlib.h" HAVE_MKSTEMP) option(USE_MBROLA "Use mbrola for speech synthesis" ${HAVE_MBROLA}) option(USE_LIBSONIC "Use libsonit for faster speech rates" ${HAVE_LIBSONIC}) option(USE_LIBPCAUDIO "Use libPcAudio for sound output" ${HAVE_LIBPCAUDIO}) option(USE_KLATT "Use klatt for speech synthesis" ON) option(USE_SPEECHPLAYER "Use speech-player for speech synthesis" ON) if (HAVE_PTHREAD) option(USE_ASYNC "Support asynchronous speech synthesis" ON) else() set(USE_ASYNC OFF) endif() option(ESPEAK_COMPAT "Install compat binary symlinks" OFF)