Python 3.2 embedding error on dynamic linking

Order matters...

Say main.cpp is the example embedding code at  http://docs.python.org/py3k/extending/embedding.html .
 Here is a wrong Makefile:

test: a.out

# Run python3.2-config --ldflags command to get required flags!

PYTHON_LDFLAGS=-L/usr/lib/python3.2/config-3.2mu \

-lpthread -ldl -lutil -lm -lpython3.2mu \

-Xlinker -export-dynamic -Wl,-O1 -Wl,-Bsymbolic-functions

# Run python3.2-config --cflags command to get required flags!

PYTHON_CFLAGS=-I/usr/include/python3.2mu -g -fwrapv -Wall

# You must put linking flag AFTER the input source code...

a.out: main.cpp

g++ ${PYTHON_CFLAGS} ${PYTHON_LDFLAGS} main.cpp

The error is like following:

/home/xxx/work/py_embed/main.cpp:11: undefined reference to `Py_Initialize'

/home/xxx/work/py_embed/main.cpp:14: undefined reference to `PyUnicodeUCS4_FromString'

/home/xxx/work/py_embed/main.cpp:15: undefined reference to `PyImport_Import

I don't know exactly why this happens but I know how to get over this error. Modify the Makefile like this:

a.out: main.cpp

g++ ${PYTHON_CFLAGS} main.cpp ${PYTHON_LDFLAGS} 

Linker flags should come last.