+ else
+ dnl On native Windows with a 64-bit 'time_t', 'struct timeval' is defined
+ dnl (in <sys/time.h> and <winsock2.h> for mingw64, in <winsock2.h> only
+ dnl for MSVC) with a tv_sec field of type 'long' (32-bit!), which is
+ dnl smaller than the 'time_t' type mandated by POSIX.
+ dnl On OpenBSD 5.1 amd64, tv_sec is 64 bits and time_t 32 bits, but
+ dnl that is good enough.
+ AC_CACHE_CHECK([for wide-enough struct timeval.tv_sec member],
+ [gl_cv_sys_struct_timeval_tv_sec],
+ [AC_COMPILE_IFELSE(
+ [AC_LANG_PROGRAM(
+ [[#if HAVE_SYS_TIME_H
+ #include <sys/time.h>
+ #endif
+ #include <time.h>
+ #if HAVE_WINSOCK2_H
+ # include <winsock2.h>
+ #endif
+ ]],
+ [[static struct timeval x;
+ typedef int verify_tv_sec_type[
+ sizeof (time_t) <= sizeof x.tv_sec ? 1 : -1
+ ];
+ ]])],
+ [gl_cv_sys_struct_timeval_tv_sec=yes],
+ [gl_cv_sys_struct_timeval_tv_sec=no])
+ ])
+ if test $gl_cv_sys_struct_timeval_tv_sec != yes; then
+ REPLACE_STRUCT_TIMEVAL=1
+ fi