Hi All, I am a newbie facing problem with utilization of disutils ( http://docs.python.org/2/distutils/introduction.html) module that helps in distributing python modules with PyPy. *content of demo.c:* #include <Python.h> #include <stdio.h> int main (void) { printf("setup passed\n"); return 0; } *content of setup.py:* from distutils.core import setup, Extension module1 = Extension('demo', sources = ['demo.c']) setup (name = 'PackageName', version = '1.0', description = 'This is a demo package', ext_modules = [module1]) Now the problem is ; if this setup.py is compiled with Python, then I am able to successfully generate the '.so' [linux@localhost disutils_example]$ python setup.py build running build running build_ext building 'demo' extension creating build creating build/temp.linux-x86_64-2.7 gcc -pthread -fno-strict-aliasing -O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector --param=ssp-buffer-size=4 -m64 -mtune=generic -D_GNU_SOURCE -fPIC -fwrapv -DNDEBUG -O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector --param=ssp-buffer-size=4 -m64 -mtune=generic -D_GNU_SOURCE -fPIC -fwrapv -fPIC -I/usr/include/python2.7 -c demo.c -o build/temp.linux-x86_64-2.7/demo.o creating build/lib.linux-x86_64-2.7 gcc -pthread -shared -Wl,-z,relro build/temp.linux-x86_64-2.7/demo.o -L/usr/lib64 -lpython2.7 -o build/lib.linux-x86_64-2.7/demo.so where as using PyPy, i am getting the following error [linux@localhost disutils_example]$ pypy setup.py build running build running build_ext building 'demo' extension cc -fPIC -Wimplicit -I/usr/lib64/pypy-1.9/include -c demo.c -o build/temp.linux-x86_64-2.7/demo.o demo.c:1:20: fatal error: Python.h: No such file or directory compilation terminated. error: command 'cc' failed with exit status 1 where as python-devel package which contains these header files is installed. Kindly suggest me the process to make this compile with PyPy. Thanking you, Sasikanth