configure.in (sched_yield): Try librt first, then libposix4.

Mon Aug  9 18:33:38 1999  Rainer Orth  <ro@TechFak.Uni-Bielefeld.DE>

	* configure.in (sched_yield): Try librt first, then libposix4.
	Add -lrt, -lposix4 to THREADSPEC.

From-SVN: r28629

libjava/ChangeLog

+Mon Aug  9 18:33:38 1999  Rainer Orth  <ro@TechFak.Uni-Bielefeld.DE>
+
+	* configure.in (sched_yield): Try librt first, then libposix4.
+	Add -lrt, -lposix4 to THREADSPEC.
+
 1999-08-08  Anthony Green  <green@cygnus.com>
 
 	* gnu/gcj/util/path/SearchPath.java: Comment out verbose output.

libjava/configure.in

@@ -381,15 +381,17 @@ else
    LIBS="$LIBS $THREADLIBS"
    AC_CHECK_FUNCS(pthread_mutexattr_settype pthread_mutexattr_setkind_np)
 
-   # Look for sched_yield.  Sometimes it is in the posix4 library
-   # (Solaris) and sometimes in -lrt (x86 Solaris).
+   # Look for sched_yield.  Up to Solaris 2.6, it is in libposix4, since
+   # Solaris 7 the name librt is preferred.
    AC_CHECK_FUNCS(sched_yield, , [
-     AC_CHECK_LIB(posix4, sched_yield, [
+     AC_CHECK_LIB(rt, sched_yield, [
        AC_DEFINE(HAVE_SCHED_YIELD)
-       THREADLIBS="$THREADLIBS -lposix4"], [
-       AC_CHECK_LIB(rt, sched_yield, [
+       THREADLIBS="$THREADLIBS -lrt"
+       THREADSPECS="$THREADSPECS -lrt"], [
+       AC_CHECK_LIB(posix4, sched_yield, [
          AC_DEFINE(HAVE_SCHED_YIELD)
-	 THREADLIBS="$THREADLIBS -lrt"])])])
+	 THREADLIBS="$THREADLIBS -lposix4"
+         THREADSPECS="$THREADSPECS -lposix4"])])])
    LIBS="$save_LIBS"
 
    # We require a way to get the time.