Question

I’m using Ubuntu 10.04 and Qt4.6, and I’ve created an executable binary file on my own computer through QtCreator.

Now I want to put my executable file on CentOS 5, but it seems that this executable file cannot run on CentOS.

The error message is

bash: ./[filename]: cannot execute binary file

Now I know this comes from 32-bits and 64-bits problem, and successfully create 32-bit exexutable file.

However, this executable file still cannot run on CentOS because of the dynamic linkage problem, it always shows that :

Error while loading shared libraries: libQtGUI.so.4: cannot open shared object file: No such file or directory

I tried to add the “-static” flag on .pro file

QMAKE_CFLAGS_RELEASE    += -Os -static
QMAKE_CPPFLAGS_RELEASE  += -Os -static
QMAKE_CXXFLAGS_RELEASE  += -Os -static
QMAKE_CCFLAGS_RELEASE   += -Os -static

however, looks like that it only generate “static binary” but not “static linked”, the dependency still exists.

I also tried to add following line on .pro file:

QMAKE_LFLAGS += static

But this project cannot compile after doing this.
I don’t have permission to install Qt on Cent OS, how can I compile this project with static linkage so that the executable file can run independently?

Thanks for your help!

Answer 1

Check 64-bit vs. 32-bit – file(1) is your friend here. Then check what libraries are missing with ldd(1).

Edit:

Take a look at this SO question Qt static linking and deployment.