I am compiling boost.python libraries by following the procedure given at http://www.boost.org/doc/libs/1_39_0/more/getting_started/unix-variants.html... I first configure the build and installation using bootstrap.sh script $ ./bootstrap.sh --with-python=/usr/bin/python2.5 --with-libraries=python --prefix=~/work/boost/setup/boost_1_39_0/mybuild Here are the contents of project-config.jam fie as generated by the script. # Boost.Build Configuration

# Automatically generated by bootstrap.sh

import option ; import feature ;

# Compiler configuration. This definition will be used unless # you already have defined some toolsets in your user-config.jam # file. if ! gcc in [ feature.values <toolset> ] { using gcc ; }

project : default-build <toolset>gcc ;

# Python configuration using python : 2.5 : /usr ;

# List of --with-<library> and --without-<library> # options. If left empty, all libraries will be built. # Options specified on the command line completely # override this variable. libraries = --with-python ;

# These settings are equivivalent to corresponding command-line # options. option.set prefix : ~/work/boost/setup/boost_1_39_0/mybuild ; option.set exec-prefix : ~/work/boost/setup/boost_1_39_0/mybuild ; option.set libdir : /lib ; option.set includedir : ~/work/boost/setup/boost_1_39_0/mybuild/include ;

The output of bootstrap.sh script instructs me to run ./bjam to build while instructions at the above link say to run ./bjam install Anyways, I tried both the options but every time I get the same error

Class top-level-target already defined Aborted

I searched the forums, but this error seems to never be discussed. I am stuck, please help! Best regards, Aamir Ahmed Khan