libc.so.6 erros, how to bundle a qt5 app to centos 6.5?

[luizelias]

Hello,

I'm working on centos 7 qt5 and I need to make my app run in centos 6.5

I'm getting libc erros because libc in centos 6.5 is older:
/lib64/libc.so.6: version `GLIBC_2.14' not found

I have compiled qt from souce static and I'm using those link flags:
CONFIG += c++11 -static
LIBS+= -L/usr/lib/gcc/x86_64-redhat-linux/4.8.2/
QMAKE_LFLAGS_RELEASE+= -static-libgcc -static-libstdc++

but still and I run ldd on the app I get that:
libc.so.6 => /lib64/libc.so.6

why is qt still link libc dynamicly?

what are the other options to bundle a qt5 to centos 6.5 without install qt5 on centos 6.5?

thanks in advance!

Luiz