#serial 5 dnl From Paul Eggert. # Define ST_MTIM_NSEC to be the nanoseconds member of struct stat's st_mtim, # if it exists. AC_DEFUN([AC_STRUCT_ST_MTIM_NSEC], [AC_CACHE_CHECK([for nanoseconds member of struct stat.st_mtim], ac_cv_struct_st_mtim_nsec, [ac_save_CPPFLAGS="$CPPFLAGS" ac_cv_struct_st_mtim_nsec=no # tv_nsec -- the usual case # _tv_nsec -- Solaris 2.6, if # (defined _XOPEN_SOURCE && _XOPEN_SOURCE_EXTENDED == 1 # && !defined __EXTENSIONS__) # st__tim.tv_nsec -- UnixWare 2.1.2 for ac_val in tv_nsec _tv_nsec st__tim.tv_nsec; do CPPFLAGS="$ac_save_CPPFLAGS -DST_MTIM_NSEC=$ac_val" AC_TRY_COMPILE([#include #include ], [struct stat s; s.st_mtim.ST_MTIM_NSEC;], [ac_cv_struct_st_mtim_nsec=$ac_val; break]) done CPPFLAGS="$ac_save_CPPFLAGS"]) if test $ac_cv_struct_st_mtim_nsec != no; then AC_DEFINE_UNQUOTED(ST_MTIM_NSEC, $ac_cv_struct_st_mtim_nsec, [Define to be the nanoseconds member of struct stat's st_mtim, if it exists.]) fi ] )