Hello to all......Today I was trying to install FreeCAD 0.10 from its source code. I am using RHEL5. I have firstly installed python2.6.5 from source and also tested it. Python is working fine. But when I try to compile FreeCAD 0.10, I got following configure error : #./configure --with-python-include=/usr/local/include/python2.6 --with-python-lib=/usr/local/lib/python2.6 --------------------------------------------------------------------------------------------------------------------------------------------------------- checking for a Python interpreter with version >= 2.5... python checking for python... /usr/local/bin/python checking for python version... 2.6 checking for python platform... linux2 checking for python script directory... ${prefix}/lib/python2.6/site-packages checking for python extension module directory... ${exec_prefix}/lib/python2.6/site-packages checking Python.h usability... yes checking Python.h presence... yes checking for Python.h... yes checking for libpython2.6... no configure: error: **** Cannot find Python2.6 devel files. **** ---------------------------------------------------------------------------------------------------------------------------------------------------------- I also searched internet for python-devel source code but was unable to find any such pacage. Please help me to resolve this python error. Thanks Vikas Mahajan