configure: failed program was:#line 45911 "configure"#include "confdefs.h"#include <stdio.h>#include <c-client.h>int main() { SIZEDTEXT *src, *dst; utf8_mime2text(src, dst);; return 0; }configure:45953: checking for U8T_CANONICALconfigure:45969: gcc -c -I -D_REENTRANT conftest.c 1>&5configure:45960:22: error: c-client.h: No such file or directoryconfigure: In function 'main':configure:45964: error: 'U8T_CANONICAL' undeclared (first use in this function)configure:45964: error: (Each undeclared identifier is reported only onceconfigure:45964: error: for each function it appears in.)configure: failed program was:#line 45958 "configure"#include "confdefs.h"#include <c-client.h>int main() { int i = U8T_CANONICAL;; return 0; }