diff --git a/CMakeLists.txt b/CMakeLists.txt
index d30231e6..0c89289b 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -126,11 +126,19 @@ ADD_DEFINITIONS (-DHAVE_NETINET_IN_H -DHAVE_ARPA_INET_H -DHAVE_ZLIB_H -DFINAL_VE
 ADD_DEFINITIONS (-DVERSION='"${VERSION}"' -DPKGDATADIR='"${PKGDATADIR}"' -DPACKAGE='')
 
 if( ENABLE_LINK )
+    # IPC linking code needs sem_timedwait which can be either in librt or pthreads
     FIND_LIBRARY(RT_LIB rt)
     IF(RT_LIB)
-       SET(CMAKE_REQUIRED_LIBRARIES ${RT_LIB})
+       SET(CMAKE_REQUIRED_LIBRARIES ${CMAKE_REQUIRED_LIBRARIES} ${RT_LIB})
        SET(VBAMCORE_LIBS ${VBAMCORE_LIBS} ${RT_LIB})
     ENDIF(RT_LIB)
+    
+    FIND_LIBRARY(PTHREAD_LIB pthread)
+    IF(PTHREAD_LIB)
+       SET(CMAKE_REQUIRED_LIBRARIES ${CMAKE_REQUIRED_LIBRARIES} ${PTHREAD_LIB})
+       SET(VBAMCORE_LIBS ${VBAMCORE_LIBS} ${PTHREAD_LIB})
+    ENDIF(PTHREAD_LIB)
+    
     INCLUDE(CheckFunctionExists)
     CHECK_FUNCTION_EXISTS(sem_timedwait SEM_TIMEDWAIT)
     IF( SEM_TIMEDWAIT)