+AC_CHECK_HEADERS(flite/flite.h,HAVE_FLITE_H=yes,HAVE_FLITE_H=no)
+AC_CHECK_LIB(flite, flite_init,HAVE_LIBFLITE=yes,HAVE_LIBFLITE=no,-lasound -lm)
+
+if test "x$HAVE_FLITE_H" = "xyes" -a "x$HAVE_LIBFLITE" = "xyes"; then
+ AC_DEFINE(HAVE_FLITE,1,[Define if the flite library is usable])
+ AC_SUBST(FLITE_LIBS,"-lflite_cmu_us_kal16 -lflite_usenglish -lflite_cmulex -lflite -lasound -lm")
+ AC_SUBST(FLITE_INCS,-Iflite)
+ save_LIBS="$LIBS"
+ LIBS="$LIBS $FLITE_LIBS"
+ AC_CHECK_FUNCS([register_cmu_us_kal16 register_cmu_us_kal],break)
+ LIBS="$save_LIBS"
+fi
+AM_CONDITIONAL(USE_FLITE,test "x$HAVE_FLITE_H" = "xyes" -a "x$HAVE_LIBFLITE" = "xyes")
+
+AC_CHECK_PROG([HAVE_SDCC], [sdcc], yes, no)
+if test "x$HAVE_SDCC" = "xno"; then
+ AC_MSG_ERROR([Please install sdcc to build AltOs])
+fi
+
+AC_CHECK_PROG([HAVE_NICKLE], [nickle], yes, no)
+if test "x$HAVE_NICKLE" = "xno"; then
+ AC_MSG_ERROR([Please install nickle to build AltOs])
+fi
+
+AC_CHECK_LIB(readline, readline)
+