in file included from main.cpp:42:
dialog.h:65: error: 'QSharedMemory' does not name a type
make[3]: *** [.obj/release-shared-emb-arm/main.o] 错误 1
make[3]:正在离开目录 `/usr/local/qt-everywhere-opensource-src-4.8.4/examples/ipc/sharedmemory'
make[2]: *** [sub-sharedmemory-make_default] 错误 2
make[2]:正在离开目录 `/usr/local/qt-everywhere-opensource-src-4.8.4/examples/ipc'
make[1]: *** [sub-ipc-make_default] 错误 2
make[1]:正在离开目录 `/u
sr/local/qt-everywhere-opensource-src-4.8.4/examples'
make: *** [sub-examples-make_default-ordered] 错误 2
