Two questions: 
- did you do "make" before "make install"?
- which ALPS version are you trying to build


On 04 Aug 2014, at 14:38, Niraj Ghimire <niraj.ghimire@gmail.com> wrote:

Dr. Troyer, do you mean the option "ALPS_BUILD_PYTHON : ON/OFF" which appears when the command "ccmake ." is used ? Yes, I turned that ON before doing "make install".

~Niraj


On Mon, Aug 4, 2014 at 4:17 PM, Matthias Troyer <troyer@phys.ethz.ch> wrote:
Did you turn on building of the Python extensions?

On 04 Aug 2014, at 14:04, Niraj Ghimire <niraj.ghimire@gmail.com> wrote:

Dear alps users,

       I was able to build ALPS and everything worked except that I got one error when I used the command "make install." The error message reads:
       
CMake Error at lib/pyalps/cmake_install.cmake:42 (FILE): file INSTALL cannot find "/home/guest/buildalps/lib/pyalps/pyalea_c.so"
 
        where guest is my user account and buildalps is my build directory for ALPS. I have no idea what this file (pyalea_c.so) is and why I am getting this error. Please help me.

Thanks,
Niraj