configure.ac: workaround gettimeofday not being found.

Even when sys/time.h exists the function gettimeofday is not picked up
by this configure script. The example/decode_mpeg.c program compiles
fine when sys/time.h is present.

configure.ac

@@ -56,8 +56,8 @@ else
 fi
 
 dnl Check for headers
-AC_CHECK_HEADERS(stdint.h inttypes.h)
-AC_CHECK_FUNCS(gettimeofday)
+AC_CHECK_HEADERS(stdint.h inttypes.h getopt.h sys/time.h)
+dnl AC_CHECK_FUNCS([gettimeofday])
 
 AC_CHECK_HEADERS(sys/socket.h, [ac_have_sys_socket_h=yes])
 AM_CONDITIONAL(HAVE_SYS_SOCKET_H, test "${ac_have_sys_socket_h}" = "yes")

examples/decode_mpeg.c

@@ -32,7 +32,10 @@
 #include <string.h>
 #include <errno.h>
 #include <sys/types.h>
+#ifdef HAVE_SYS_TIME_H
+#define HAVE_GETTIMEOFDAY 1
 #include <sys/time.h>
+#endif
 #include <time.h>
 #include <unistd.h>
 #include <fcntl.h>