[monitoring-plugins] configure.ac: Don't let pthread check depend on OS

[Holger Weiss]

 Module: monitoring-plugins
 Branch: check-disk-thread
 Commit: 7082acceb5de96862e92481dfb3a75e0310513c2
 Author: Holger Weiss <holger at zedat.fu-berlin.de>
   Date: Tue Dec  2 01:03:57 2014 +0100
    URL: https://www.monitoring-plugins.org/repositories/monitoring-plugins/commit/?id=7082acc

configure.ac: Don't let pthread check depend on OS

Don't check the operating system environment to detect the correct
linker flags for using the POSIX thread library.

---

 configure.ac | 18 ++++++------------
 1 file changed, 6 insertions(+), 12 deletions(-)

diff --git a/configure.ac b/configure.ac
index 6dacd4f..a90a9d4 100644
--- a/configure.ac
+++ b/configure.ac
@@ -156,6 +156,12 @@ AC_CHECK_LIB(socket,socket,SOCKETLIBS="$SOCKETLIBS -lsocket")
 AC_CHECK_LIB(resolv,main,SOCKETLIBS="$SOCKETLIBS -lresolv")
 AC_SUBST(SOCKETLIBS)
 
+dnl Check for POSIX thread libraries
+AC_CHECK_HEADERS(pthread.h)
+AC_CHECK_LIB(pthread,pthread_create,THRLIBS="-lpthread",
+             AC_CHECK_LIB(pthread,pthread_create,THRLIBS="-lpthread -lrt",-lrt))
+AC_SUBST(THRLIBS)
+
 dnl
 dnl check for math-related functions needing -lm
 AC_CHECK_HEADERS(math.h)
@@ -544,18 +550,6 @@ else
 	with_gnutls="no"
 fi
 
-dnl Check for POSIX thread libraries
-AC_CHECK_HEADERS(pthread.h)
-case $host in
-	*sun* | *solaris*)
-		AC_CHECK_LIB(pthread,pthread_create,THRLIBS="-lpthread -lrt")
-	;;
-	*)
-		AC_CHECK_LIB(pthread,pthread_create,THRLIBS="-lpthread")
-	;;
-esac
-AC_SUBST(THRLIBS)
-
 dnl
 dnl Checks for header files.
 dnl