64-bit system under libmemcached in GCC 4.7.1 failed to compile the solution

The new GCC 4.7.1 was installed today, so I wanted to recompile the old library (./configure CC=/USR/LOCAL/BIN/GCC to specify the compiler version.)

But thought of encountering the following error:

Cxxld libhashkit/libhashkit.la
/usr/local/lib/.. /lib/libstdc++.so:could not read symbols:file in wrong format
Collect2:error:ld returned 1 exit status

Execution: file/usr/local/lib/. /lib/libstdc++.so a look, found that this is a 32-bit library, is originally compiled into 64-bit code, but linked to the 32-bit stdc++ library, of course, the error.

To be performed again by:

Make clean all ldflags= "-l/usr/lib64-l/lib64"

Solve the problem.

Interested friends can look at the libmemcached script to find out the most fundamental reason ...