* NEWS: New option --atime-preserve=system, which uses O_NOATIME.

[chaz/tar] / configure.ac

diff --git a/configure.ac b/configure.ac
index 0985f74c01143310c0c99dea5641269c6d70c462..a82623cc31ce1959c920e171fe8be5d44c79534b 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -34,9 +34,9 @@ AC_SYS_LARGEFILE
 AC_ISC_POSIX
 AC_C_INLINE
 
-AC_CHECK_HEADERS(fcntl.h linux/fd.h memory.h net/errno.h \
-  sgtty.h string.h \
-  sys/param.h sys/device.h sys/gentape.h \
+AC_CHECK_HEADERS_ONCE(fcntl.h linux/fd.h memory.h net/errno.h \
+  sgtty.h string.h stropts.h \
+  sys/param.h sys/device.h sys/filio.h sys/gentape.h \
   sys/inet.h sys/io/trioctl.h \
   sys/mtio.h sys/time.h sys/tprintf.h sys/tape.h \
   unistd.h locale.h)
@@ -88,27 +88,6 @@ tar_GNULIB
 # paxutils modules
 tar_PAXUTILS
 
-AC_CHECK_MEMBERS([struct stat.st_spare1, struct stat.st_atim.tv_nsec, struct stat.st_atimespec.tv_nsec, struct stat.st_atimensec], , ,
-                 [
-#include <sys/types.h>
-#include <sys/stat.h>])
-
-# Save and restore LIBS so e.g., -lrt, isn't added to it.  Otherwise, *all*
-# programs in the package would end up linked with that potentially-shared
-# library, inducing unnecessary run-time overhead.
-
-# Solaris 2.5.1 needs -lposix4 to get the clock_gettime function.
-# Solaris 7 prefers the library name -lrt to the obsolescent name -lposix4.
-tar_save_LIBS=$LIBS
-  LIB_CLOCK_GETTIME=
-  AC_SEARCH_LIBS(clock_gettime, [rt posix4])
-  case "$ac_cv_search_clock_gettime" in
-    -l*) LIB_CLOCK_GETTIME=$ac_cv_search_clock_gettime;;
-  esac
-  AC_SUBST(LIB_CLOCK_GETTIME)
-  AC_CHECK_FUNCS(clock_gettime)
-LIBS=$tar_save_LIBS
-
 AC_CHECK_FUNCS(fsync lstat mkfifo readlink strerror symlink setlocale utimes)
 AC_CHECK_DECLS([getgrgid],,, [#include <grp.h>])
 AC_CHECK_DECLS([getpwuid],,, [#include <pwd.h>])