diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index d942e71..7c1d432 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -49,6 +49,10 @@ ADD_LIBRARY(RosegardenCommon STATIC
     ${common_sound_SRCS}
 )
 
+TARGET_LINK_LIBRARIES(RosegardenCommon
+    dl
+)
+
 IF(USE_PCH)
     ADD_DEPENDENCIES(RosegardenCommon precompiled_headers)
 ENDIF(USE_PCH)
@@ -76,6 +80,7 @@ IF(USE_PCH)
 ENDIF(USE_PCH)
 
 TARGET_LINK_LIBRARIES(rosegardensequencer 
+    dl
     ${QT_AND_KDECORE_LIBS} 
     ${ALSA_LIBS} 
     ${JACK_LIBS}
@@ -102,6 +107,11 @@ ADD_LIBRARY(RosegardenExtended STATIC
     ${gui_SRCS}
 )
 
+TARGET_LINK_LIBRARIES(RosegardenExtended
+    dl
+    lo
+)
+
 ADD_LIBRARY(RosegardenCommands STATIC
     ${commands_SRCS}
 )
@@ -137,6 +147,8 @@ IF(USE_PCH)
 ENDIF(USE_PCH)
 
 TARGET_LINK_LIBRARIES(rosegarden
+    dl
+    lo
     ${QT_AND_KDECORE_LIBS} 
     ${LIBLO_LIBS}
     ${LRDF_LIBS}
@@ -185,6 +197,7 @@ IF(WANT_TEST)
     )
 
     TARGET_LINK_LIBRARIES(RosegardenTestDriver
+        dl
         ${QT_AND_KDECORE_LIBS} 
         ${LIBLO_LIBS}
         ${LRDF_LIBS}
diff --git a/src/sound/AudioCache.h b/src/sound/AudioCache.h
index 6dd55ff..de7c6e0 100644
--- a/src/sound/AudioCache.h
+++ b/src/sound/AudioCache.h
@@ -22,6 +22,7 @@
 #ifndef _AUDIO_CACHE_H_
 #define _AUDIO_CACHE_H_
 
+#include <cstddef>
 #include <map>
 
 namespace Rosegarden