1#serial 5 2 3dnl From Paul Eggert. 4 5# Define ST_MTIM_NSEC to be the nanoseconds member of struct stat's st_mtim, 6# if it exists. 7 8AC_DEFUN([AC_STRUCT_ST_MTIM_NSEC], 9 [AC_CACHE_CHECK([for nanoseconds member of struct stat.st_mtim], 10 ac_cv_struct_st_mtim_nsec, 11 [ac_save_CPPFLAGS="$CPPFLAGS" 12 ac_cv_struct_st_mtim_nsec=no 13 # tv_nsec -- the usual case 14 # _tv_nsec -- Solaris 2.6, if 15 # (defined _XOPEN_SOURCE && _XOPEN_SOURCE_EXTENDED == 1 16 # && !defined __EXTENSIONS__) 17 # st__tim.tv_nsec -- UnixWare 2.1.2 18 for ac_val in tv_nsec _tv_nsec st__tim.tv_nsec; do 19 CPPFLAGS="$ac_save_CPPFLAGS -DST_MTIM_NSEC=$ac_val" 20 AC_TRY_COMPILE([#include <sys/types.h> 21#include <sys/stat.h>], [struct stat s; s.st_mtim.ST_MTIM_NSEC;], 22 [ac_cv_struct_st_mtim_nsec=$ac_val; break]) 23 done 24 CPPFLAGS="$ac_save_CPPFLAGS"]) 25 26 if test $ac_cv_struct_st_mtim_nsec != no; then 27 AC_DEFINE_UNQUOTED(ST_MTIM_NSEC, $ac_cv_struct_st_mtim_nsec, 28 [Define to be the nanoseconds member of struct stat's st_mtim, 29 if it exists.]) 30 fi 31 ] 32) 33