Make SIGEV_THREAD_ID decoding less glibc specific
SIGEV_THREAD_ID decoding requires access to an internal member of
struct sigevent. There seems to be no portable way to do it besides
adding a configure check.
* configure.ac (AC_CHECK_MEMBERS): Check for
struct sigevent._sigev_un._pad and struct sigevent.__pad.
* time.c (printsigevent): Use an appropriate struct sigevent member
to print thread id.
Reported by John Spencer.
diff --git a/configure.ac b/configure.ac
index a2cc89b..a60b25f 100644
--- a/configure.ac
+++ b/configure.ac
@@ -258,6 +258,9 @@
AC_CHECK_MEMBERS([struct utsname.domainname],,, [#include <sys/utsname.h>])
+AC_CHECK_MEMBERS([struct sigevent._sigev_un._pad,
+ struct sigevent.__pad],,, [#include <signal.h>])
+
AC_CHECK_DECLS([sys_errlist])
AC_CHECK_DECLS([sys_siglist, _sys_siglist],,, [#include <signal.h>])
AC_CHECK_DECLS(m4_normalize([