How to make a static link with libpython in "OS X Framework-build python"

Question

I am trying to make a static link with libpython2.7 on Mac OS X 10.11.

While static-linking successfully worked with libpython2.7.a in pyenv(anaconda)-build python, it didn't work with libpython2.7.a in Framework-build python.

Creating static Mac OS X C build

Since it seems -static option does NOT work on Mac OS X, I tried the following.

CXXFLAGS=-I/System/Library/Frameworks/Python.framework/Versions/2.7/include/python2.7
LIBS=/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/config/libpython2.7.a

$ g++ -o main main.cc $(CXXFLAGS) $(LIBS)

and got the following result.

$ otool -L main
main:
    /System/Library/Frameworks/Python.framework/Versions/2.7/Python (compatibility version 2.7.0, current version 2.7.10)
    /usr/lib/libc++.1.dylib (compatibility version 1.0.0, current version 120.1.0)
    /usr/lib/libSystem.B.dylib (compatibility version 1.0.0, current version 1226.10.1)

Linking with libpython2.7.a resulted in dynamic-linking with Versions/2.7/Python.

I also found that both of libpython2.7.a and libpython2.7.dylib are the symbolic link to /System/Library/Frameworks/Python.framework/Versions/2.7/Python.

/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/config/libpython2.7.dylib
-> ../../../Python

/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/config/libpython2.7.a
-> ../../../Python

1. Why there exists no valid static library for libpython2.7 in Framework-build python ?

2. What's the difference between /System/Library/Frameworks/Python.framework/Versions/2.7/Python and a standard shared library?

3. How can I make a static link with libpython2.7 in Framework-build python ?