From: Toby Smithe  <tsmithe@ubuntu.com>
Subject: Allow for building on non-32-bit architectures
 Fix architecture-specific build rules

--- a/mscore/CMakeLists.txt
+++ b/mscore/CMakeLists.txt
@@ -291,7 +291,7 @@
       add_custom_command(
          OUTPUT ${PROJECT_BINARY_DIR}/all.h.gch
          COMMAND ${CMAKE_CXX_COMPILER}
-           -x c++-header -g  ${FLAGS} -m32
+           -x c++-header -g  ${FLAGS}
            -I${QT_HEADERS_DIR}
            -o all.h.gch all.h
          DEPENDS ${PROJECT_BINARY_DIR}/all.h