struct symtab;
+/* See openp function definition for their description. */
+
+enum openp_flag
+{
+ OPF_TRY_CWD_FIRST = 0x01,
+ OPF_SEARCH_IN_PATH = 0x02,
+ OPF_RETURN_REALPATH = 0x04,
+};
+
+DEF_ENUM_FLAGS_TYPE(openp_flag, openp_flags);
+
+extern int openp (const char *, openp_flags, const char *, int, char **);
+
+extern int source_full_path_of (const char *, char **);
+
+extern void mod_path (const char *, char **);
+
+extern void add_path (const char *, char **, int);
+
+extern void directory_switch (const char *, int);
+
+extern char *source_path;
+
+extern void init_source_path (void);
+
/* This function is capable of finding the absolute path to a
source file, and opening it, provided you give it a FILENAME. Both the
DIRNAME and FULLNAME are only added suggestions on where to find the file.