1. Download Python

...

1. 2.5.1 from http://www.python.org/download

...

• Create a directory such as rh9_gcc32 (or cd into the directory corresponding to OS and gcc version for which you want to install python, such as rhel4_gcc34 )

...

1. /releases/2.5.1

...

1. /^{Image Added}
2. Unzip and change to the directory of the unpacked archive, E

...

1. .g.,

...

...

1. • tar -

...

1. • zxvf  Python-2.5.1.tgz

...

1. • cd Python-2.5.1
2. *Run, "./configure --prefix=

...

•  Where <Installation Location> is the full path to *<OS_gccVersion>/<python version>/gcc<compiler version>*

1. <installation directory>":
   • .

...

1. • /configure --prefix=/afs/slac/g/glast/ground/GLAST_EXT/

...

1. • redhat4-i686-32bit/python/2.5.1

...

1. • -gl1/gcc34/ 
2. Edit the file, "Setup," in the "Modules" directory, "Modules/Setup"
   • Enable zlib (Uncomment the line corresponding to "zlib")
   • To build Python against tcltck 8.4, there are three lines to edit in the file (I would suggest searching for "_tkinter" in the Modules/Setup file, then following the documentation)
     1. Enable tkinter, by Uncommenting the line "

Do a Standard Build 

• Run
  1. make
  2. make install

Do Custom Build Python against an arbitrary version of tcl/tk

After running 'configure,' in the same directory, there will be a file created in the Modules directory, named "Setup:" Modules/Setup. 

1. Edit the file, "Modules/Setup"
   • There will be 4 relevant lines in this file that you have to edit.  They look like this:
   • # *** Always uncomment this (leave the leading underscore in!)*:
      _{*}
     1. _tkinter _tkinter.c tkappinit.c -DWITH_APPINIT
     {color}
     # ***
     1. "
     :
            -L/usr/lib {}
     # *** {*}
     1. Uncomment and edit to reflect where your Tcl/Tk libraries are
     {*}
     1. , example
        • "-L/afs/slac.stanford.edu/g/glast/applications/heasoft/PROD/tcltk/i686-pc-linux-gnu-libc2.3.2/lib"
     1. Uncomment and edit to reflect where your Tcl/Tk headers are
     {*}:
            -I/usr/include {}
     # ***
     1. Uncomment and edit to reflect your Tcl/Tk versions
     :
            -ltk8.4 -ltcl8.4 {}
    IMPORTANT{*}- setup the
   • 1. are
2. Run,
   • make
   • make install

* Step 3 must be done before 4.   Running, "./configure," generates the file Modules/Setup 

While running "make", if you run into any problems finding tcl8.4 or tk8.4 libraries, try setting the environment variable, LD_RUN_PATH

...

to point to the location of the

...

tcltk libraries:
make clean
setenv LD_RUN_PATH

...

<Location of tcltk libraries>
make
make

...

install
unsetenv LD_RUN_

...

PATH