pandora_builtin_list=`echo $pandora_builtin_list | sed 's/, *$//'`
AS_IF([test "x$pandora_builtin_list" = "x"], pandora_builtin_list="NULL")
AC_SUBST([PANDORA_BUILTIN_LIST],[$pandora_builtin_list])
- m4_ifblank($1,[
+ m4_ifval(m4_normalize([$1]),[
+ AC_CONFIG_FILES($*)
+ ],[
AC_DEFINE_UNQUOTED([PANDORA_BUILTIN_LIST],[$pandora_builtin_list],
[List of plugins to be built in])
- ],[
- AC_CONFIG_FILES($*)
])