Rebase against 46367d1ecc8a016ab7c7af9ec107e33c6d46fc26.

patches/eventfd_synchronization/0001-configure-Check-for-sys-eventfd.h-ppoll-and-shm_open.patch

@@ -7,104 +7,10 @@ We use ppoll() instead of poll() for the better time granularity.
 
 Although perhaps we shouldn't since the server doesn't do this.
 ---
- configure           | 68 +++++++++++++++++++++++++++++++++++++++++++++
  configure.ac        | 12 ++++++++
  include/config.h.in |  9 ++++++
  3 files changed, 89 insertions(+)
 
-diff --git a/configure b/configure
-index ec425d91f63..200b42b7fe7 100755
---- a/configure
-+++ b/configure
-@@ -7525,6 +7525,7 @@ for ac_header in \
- 	sys/cdio.h \
- 	sys/epoll.h \
- 	sys/event.h \
-+	sys/eventfd.h \
- 	sys/filio.h \
- 	sys/ioctl.h \
- 	sys/ipc.h \
-@@ -17912,6 +17913,7 @@ for ac_func in \
- 	port_create \
- 	posix_fadvise \
- 	posix_fallocate \
-+	ppoll \
- 	prctl \
- 	proc_pidinfo \
- 	setproctitle \
-@@ -18255,6 +18257,72 @@ fi
-     ;;
- esac
- 
-+if test "$ac_cv_header_sys_mman_h" = "yes" -a "x$RT_LIBS" = "x"
-+then
-+    ac_save_LIBS=$LIBS
-+    { $as_echo "$as_me:${as_lineno-$LINENO}: checking for library containing shm_open" >&5
-+$as_echo_n "checking for library containing shm_open... " >&6; }
-+if ${ac_cv_search_shm_open+:} false; then :
-+  $as_echo_n "(cached) " >&6
-+else
-+  ac_func_search_save_LIBS=$LIBS
-+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-+/* end confdefs.h.  */
-+
-+/* Override any GCC internal prototype to avoid an error.
-+   Use char because int might match the return type of a GCC
-+   builtin and then its argument prototype would still apply.  */
-+#ifdef __cplusplus
-+extern "C"
-+#endif
-+char shm_open ();
-+int
-+main ()
-+{
-+return shm_open ();
-+  ;
-+  return 0;
-+}
-+_ACEOF
-+for ac_lib in '' rt; do
-+  if test -z "$ac_lib"; then
-+    ac_res="none required"
-+  else
-+    ac_res=-l$ac_lib
-+    LIBS="-l$ac_lib  $ac_func_search_save_LIBS"
-+  fi
-+  if ac_fn_c_try_link "$LINENO"; then :
-+  ac_cv_search_shm_open=$ac_res
-+fi
-+rm -f core conftest.err conftest.$ac_objext \
-+    conftest$ac_exeext
-+  if ${ac_cv_search_shm_open+:} false; then :
-+  break
-+fi
-+done
-+if ${ac_cv_search_shm_open+:} false; then :
-+
-+else
-+  ac_cv_search_shm_open=no
-+fi
-+rm conftest.$ac_ext
-+LIBS=$ac_func_search_save_LIBS
-+fi
-+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_search_shm_open" >&5
-+$as_echo "$ac_cv_search_shm_open" >&6; }
-+ac_res=$ac_cv_search_shm_open
-+if test "$ac_res" != no; then :
-+  test "$ac_res" = "none required" || LIBS="$ac_res $LIBS"
-+
-+$as_echo "#define HAVE_SHM_OPEN 1" >>confdefs.h
-+
-+                    test "$ac_res" = "none required" || RT_LIBS="$ac_res"
-+
-+fi
-+
-+fi
-+LIBS=$ac_save_LIBS
-+
- if test "x$with_ldap" != "xno"
- then
-         if ${LDAP_CFLAGS:+false} :; then :
 diff --git a/configure.ac b/configure.ac
 index 718ab1ca50e..d5f82ad2af4 100644
 --- a/configure.ac