diff --git a/include/cpp.h b/include/cpp.h
index e63cedf..ea8e791 100644
--- a/include/cpp.h
+++ b/include/cpp.h
@@ -34,6 +34,19 @@ typedef enum _CppFilter
 	CPP_FILTER_COMMENT	= 4
 } CppFilter;
 
+typedef enum _CppOption
+{
+	CPP_OPTION_NONE		= 0,
+	CPP_OPTION_IGNORE_META	= 1
+} CppOption;
+
+typedef struct _CppPrefs
+{
+	char const * filename;
+	int filters;
+	int options;
+} CppPrefs;
+
 typedef enum _CppCode
 {
 	CPP_CODE_NULL = TC_NULL,
@@ -113,7 +126,7 @@ typedef enum _CppCode
 
 
 /* functions */
-Cpp * cpp_new(char const * filename, int filters);
+Cpp * cpp_new(CppPrefs * prefs);
 void cpp_delete(Cpp * cpp);
 
 /* accessors */
diff --git a/src/main.c b/src/main.c
index ff5b258..11805fe 100644
--- a/src/main.c
+++ b/src/main.c
@@ -75,7 +75,7 @@ static int _cpp(Prefs * prefs, int filec, char * filev[])
 static int _cpp_do(Prefs * prefs, FILE * fp, char const * filename)
 {
 	int ret;
-	int filter = CPP_FILTER_WHITESPACE | CPP_FILTER_COMMENT;
+	CppPrefs cppprefs;
 	Cpp * cpp;
 	size_t i;
 	size_t j;
@@ -83,9 +83,12 @@ static int _cpp_do(Prefs * prefs, FILE * fp, char const * filename)
 	Token * token;
 	int code;
 
+	cppprefs.filename = filename;
+	cppprefs.filters = CPP_FILTER_WHITESPACE | CPP_FILTER_COMMENT;
+	cppprefs.options = 0;
 	if(prefs->flags & PREFS_t)
-		filter |= CPP_FILTER_TRIGRAPH;
-	if((cpp = cpp_new(filename, filter)) == NULL)
+		cppprefs.filters |= CPP_FILTER_TRIGRAPH;
+	if((cpp = cpp_new(&cppprefs)) == NULL)
 		return _cpp_error();
 	for(i = 0; i < prefs->paths_cnt; i++)
 		if(cpp_path_add(cpp, prefs->paths[i]) != 0)