Index: Jenkins/Distribute
===================================================================
--- Jenkins/Distribute	(revision 0c1f3a6959cc2106aa11e6381011b050800fe855)
+++ Jenkins/Distribute	(revision e05633006530a4b74b9967812d4c5fcd95ee8192)
@@ -10,5 +10,5 @@
 //===========================================================================================================
 
-node('master') {
+node {
 	// Globals
 	BuildDir  = pwd tmp: true
Index: Jenkins/FullBuild
===================================================================
--- Jenkins/FullBuild	(revision 0c1f3a6959cc2106aa11e6381011b050800fe855)
+++ Jenkins/FullBuild	(revision e05633006530a4b74b9967812d4c5fcd95ee8192)
@@ -5,5 +5,5 @@
 //===========================================================================================================
 
-node ('master') {
+node {
 	def err = null
 
Index: Jenkinsfile
===================================================================
--- Jenkinsfile	(revision 0c1f3a6959cc2106aa11e6381011b050800fe855)
+++ Jenkinsfile	(revision e05633006530a4b74b9967812d4c5fcd95ee8192)
@@ -7,5 +7,5 @@
 //===========================================================================================================
 
-node('master') {
+node {
 	// Globals
 	BuildDir  = pwd tmp: true
Index: libcfa/configure.ac
===================================================================
--- libcfa/configure.ac	(revision 0c1f3a6959cc2106aa11e6381011b050800fe855)
+++ libcfa/configure.ac	(revision e05633006530a4b74b9967812d4c5fcd95ee8192)
@@ -131,4 +131,10 @@
 #io_uring 5.5 uses enum values
 #io_uring 5.6 and later uses probes
+
+AH_TEMPLATE([CFA_HAVE_LINUX_RSEQ_H],[Defined if rseq support is present when compiling libcfathread.])
+AC_CHECK_HEADERS([linux/rseq.h], [AC_DEFINE(CFA_HAVE_LINUX_RSEQ_H)])
+
+AH_TEMPLATE([CFA_HAVE_LINUX_LIBRSEQ],[Defined if librseq support is present when compiling libcfathread.])
+AC_CHECK_LIB([rseq], [rseq_available], [AC_DEFINE(CFA_HAVE_LINUX_RSEQ_H)], [])
 
 AH_TEMPLATE([CFA_HAVE_LINUX_IO_URING_H],[Defined if io_uring support is present when compiling libcfathread.])