1*75f6d617Schristos#serial 5 2*75f6d617Schristos 3*75f6d617Schristosdnl From Paul Eggert. 4*75f6d617Schristos 5*75f6d617Schristos# Define ST_MTIM_NSEC to be the nanoseconds member of struct stat's st_mtim, 6*75f6d617Schristos# if it exists. 7*75f6d617Schristos 8*75f6d617SchristosAC_DEFUN([AC_STRUCT_ST_MTIM_NSEC], 9*75f6d617Schristos [AC_CACHE_CHECK([for nanoseconds member of struct stat.st_mtim], 10*75f6d617Schristos ac_cv_struct_st_mtim_nsec, 11*75f6d617Schristos [ac_save_CPPFLAGS="$CPPFLAGS" 12*75f6d617Schristos ac_cv_struct_st_mtim_nsec=no 13*75f6d617Schristos # tv_nsec -- the usual case 14*75f6d617Schristos # _tv_nsec -- Solaris 2.6, if 15*75f6d617Schristos # (defined _XOPEN_SOURCE && _XOPEN_SOURCE_EXTENDED == 1 16*75f6d617Schristos # && !defined __EXTENSIONS__) 17*75f6d617Schristos # st__tim.tv_nsec -- UnixWare 2.1.2 18*75f6d617Schristos for ac_val in tv_nsec _tv_nsec st__tim.tv_nsec; do 19*75f6d617Schristos CPPFLAGS="$ac_save_CPPFLAGS -DST_MTIM_NSEC=$ac_val" 20*75f6d617Schristos AC_TRY_COMPILE([#include <sys/types.h> 21*75f6d617Schristos#include <sys/stat.h>], [struct stat s; s.st_mtim.ST_MTIM_NSEC;], 22*75f6d617Schristos [ac_cv_struct_st_mtim_nsec=$ac_val; break]) 23*75f6d617Schristos done 24*75f6d617Schristos CPPFLAGS="$ac_save_CPPFLAGS"]) 25*75f6d617Schristos 26*75f6d617Schristos if test $ac_cv_struct_st_mtim_nsec != no; then 27*75f6d617Schristos AC_DEFINE_UNQUOTED(ST_MTIM_NSEC, $ac_cv_struct_st_mtim_nsec, 28*75f6d617Schristos [Define to be the nanoseconds member of struct stat's st_mtim, 29*75f6d617Schristos if it exists.]) 30*75f6d617Schristos fi 31*75f6d617Schristos ] 32*75f6d617Schristos) 33