diff -ur csound5~/Opcodes/stk/CMakeLists.txt csound5/Opcodes/stk/CMakeLists.txt
--- csound5~/Opcodes/stk/CMakeLists.txt	2012-02-20 12:48:56.000000000 +0100
+++ csound5/Opcodes/stk/CMakeLists.txt	2012-02-20 12:49:25.000000000 +0100
@@ -3,9 +3,19 @@
 if(BUILD_STK_OPCODES)
     find_library(STK_LIBRARY stk)
     if(STK_LIBRARY)
-        make_plugin(stk-ops stkOpcodes.cpp "stk")
-        set_target_properties(stk-ops PROPERTIES
-            OUTPUT_NAME stk)
+        find_path(STK_INCLUDE_DIR Stk.h
+            /usr/include/stk
+            /usr/local/include/stk)
+        
+        check_deps(BUILD_STK_OPCODES STK_INCLUDE_DIR)
+        if(STK_INCLUDE_DIR)
+            include_directories(${STK_INCLUDE_DIR})
+
+            make_plugin(stk-ops stkOpcodes.cpp "stk")
+
+            set_target_properties(stk-ops PROPERTIES
+                OUTPUT_NAME stk)
+        endif()
     else()
         set(stk_srcs
             src/InetWvIn.cpp    src/InetWvOut.cpp
@@ -21,7 +31,10 @@
         find_file(STK_FOUND
             NAMES src/InetWvIn.cpp
             HINTS ${CMAKE_CURRENT_SOURCE_DIR})
-        check_deps(BUILD_STK_OPCODES STK_FOUND)
+
+        find_path(STK_INCLUDE_DIR Stk.h ./include)            
+
+        check_deps(BUILD_STK_OPCODES STK_FOUND STK_INCLUDE_DIR)
 
         if(BUILD_STK_OPCODES)
 
diff -ur csound5~/Opcodes/stk/stkOpcodes.cpp csound5/Opcodes/stk/stkOpcodes.cpp
--- csound5~/Opcodes/stk/stkOpcodes.cpp	2012-02-20 12:48:56.000000000 +0100
+++ csound5/Opcodes/stk/stkOpcodes.cpp	2012-02-20 12:49:52.000000000 +0100
@@ -48,35 +48,35 @@
  * See the STK class documentation to determine the controller numbers
  * used by each instrument.
  */
-#include <stk/Stk.h>
-#include <stk/BandedWG.h>
-#include <stk/BeeThree.h>
-#include <stk/BlowBotl.h>
-#include <stk/BlowHole.h>
-#include <stk/Bowed.h>
-#include <stk/Brass.h>
-#include <stk/Clarinet.h>
-#include <stk/Drummer.h>
-#include <stk/Flute.h>
-#include <stk/FMVoices.h>
-#include <stk/HevyMetl.h>
-#include <stk/Mandolin.h>
-//#include <stk/Mesh2D.h>
-#include <stk/ModalBar.h>
-#include <stk/Moog.h>
-#include <stk/PercFlut.h>
-#include <stk/Plucked.h>
-#include <stk/Resonate.h>
-#include <stk/Rhodey.h>
-#include <stk/Saxofony.h>
-#include <stk/Shakers.h>
-#include <stk/Simple.h>
-#include <stk/Sitar.h>
-#include <stk/StifKarp.h>
-#include <stk/TubeBell.h>
-#include <stk/VoicForm.h>
-#include <stk/Whistle.h>
-#include <stk/Wurley.h>
+#include <Stk.h>
+#include <BandedWG.h>
+#include <BeeThree.h>
+#include <BlowBotl.h>
+#include <BlowHole.h>
+#include <Bowed.h>
+#include <Brass.h>
+#include <Clarinet.h>
+#include <Drummer.h>
+#include <Flute.h>
+#include <FMVoices.h>
+#include <HevyMetl.h>
+#include <Mandolin.h>
+//#include <Mesh2D.h>
+#include <ModalBar.h>
+#include <Moog.h>
+#include <PercFlut.h>
+#include <Plucked.h>
+#include <Resonate.h>
+#include <Rhodey.h>
+#include <Saxofony.h>
+#include <Shakers.h>
+#include <Simple.h>
+#include <Sitar.h>
+#include <StifKarp.h>
+#include <TubeBell.h>
+#include <VoicForm.h>
+#include <Whistle.h>
+#include <Wurley.h>
 
 using namespace stk;