--- mscore-1.2/mscore/al/CMakeLists.txt
+++ mscore-1.2/mscore/al/CMakeLists.txt
@@ -42,7 +42,7 @@
 
 set_source_files_properties(
    dsp.cpp xml.cpp tempo.cpp sig.cpp pos.cpp fraction.cpp
-   PROPERTIES COMPILE_FLAGS "-include ${PROJECT_BINARY_DIR}/all.h -g -Wall -Wextra -Winvalid-pch"
+   PROPERTIES COMPILE_FLAGS "-include ${PROJECT_BINARY_DIR}/all.h -Wall -Wextra -Winvalid-pch"
    )
 
 set_source_files_properties(dspSSE.cpp
--- mscore-1.2/mscore/awl/CMakeLists.txt
+++ mscore-1.2/mscore/awl/CMakeLists.txt
@@ -61,7 +61,7 @@
 
 set_target_properties( awl
    PROPERTIES COMPILE_FLAGS
-      "-include ${PROJECT_BINARY_DIR}/all.h -g -Wall -Wextra -Winvalid-pch"
+      "-include ${PROJECT_BINARY_DIR}/all.h -Wall -Wextra -Winvalid-pch"
    )
 
 ADD_DEPENDENCIES(awl mops1)
--- mscore-1.2/mscore/CMakeLists.txt
+++ mscore-1.2/mscore/CMakeLists.txt
@@ -253,9 +253,6 @@
    WORKING_DIRECTORY ${PROJECT_BINARY_DIR}
    )
 
-set(CMAKE_CXX_FLAGS_DEBUG   "")
-set(CMAKE_CXX_FLAGS_RELEASE "-O3 -DNDEBUG")
-
 if (CMAKE_BUILD_TYPE STREQUAL "DEBUG")
       if (MINGW)
             set(FLAGS -DQT_DEBUG -DQT_DLL)
@@ -264,9 +261,9 @@
       endif (MINGW)
 else (CMAKE_BUILD_TYPE STREQUAL "DEBUG")
       if (MINGW)
-            set(FLAGS -O2 -DNDEBUG -DQT_DLL -DQT_NO_DEBUG)
+            set(FLAGS -DNDEBUG -DQT_DLL -DQT_NO_DEBUG)
       else (MINGW)
-            set(FLAGS -O2 -DNDEBUG -DQT_NO_DEBUG)
+            set(FLAGS -DNDEBUG -DQT_NO_DEBUG)
       endif (MINGW)
 endif (CMAKE_BUILD_TYPE STREQUAL "DEBUG")
 
@@ -276,7 +273,7 @@
       add_custom_command(
          OUTPUT ${PROJECT_BINARY_DIR}/all.h.pch
          COMMAND ${CMAKE_CXX_COMPILER}
-           -x c++-header -g ${FLAGS}
+           -x c++-header ${FLAGS}
            -I${QT_INCLUDE_DIR}
            -o all.h.pch all.h
          DEPENDS ${PROJECT_BINARY_DIR}/all.h
@@ -287,7 +284,7 @@
       add_custom_command(
          OUTPUT ${PROJECT_BINARY_DIR}/all.h.gch
          COMMAND ${CMAKE_CXX_COMPILER}
-           -x c++-header -g  ${FLAGS} -m32
+           -x c++-header ${FLAGS}
            -I${QT_HEADERS_DIR}
            -o all.h.gch all.h
          DEPENDS ${PROJECT_BINARY_DIR}/all.h