pkgconf_trace
PKGCONF_API bool pkgconf_trace(const pkgconf_client_t *client, const char *filename, size_t lineno, const char *funcname, const char *format, ...) PRINTFLIKE(5, 6);
pkgconf_trace(client, __FILE__, __LINE__, __PRETTY_FUNCTION__, __VA_ARGS__); \
pkgconf_trace(client, __FILE__, __LINE__, __func__, __VA_ARGS__); \