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1. Build by running "make >& build-tiger.log &"
2. libPyROOT.dylib must be rebuilt, due to a need to make it a "bundle" rather than "shared library":
   cd into pyroot/src directory and do:
   g++ -flat_namespace -bundle *.o -bundle_loader $GLAST_EXT/python/2.5.1-g3/gcc40/bin/python -L$ROOTSYS/lib -ldl -lCore -lCint -lRIO -lNet -lHist -lGraf -lGraf3d -lGpad -lTree -lMatrix -lMathCore -lThread -lReflex -L$GLAST_EXT/python/2.5.1-gl3/gcc40/lib/python2.5/config -lpython2.5 -o libPyROOT.dylib
   See:  https://savannah.cern.ch/bugs/index.php?22003
3. The *.dylib files will have their references to other ROOT libraries hard-coded.  This must be fixed before the libraries can be distributed.  Both the ids and the ROOT libraries referenced must be updated.
   1. First check the id and references using:
      otool -L name.dylib.  i.e.  otool -L libCint.dylib
   2. Next update the id using the command: 
      install_name_tool -id newID fileName  i.e. install_name_tool -id libCint.dylib libCint.dylib
   3. For any ROOT libraries referenced do: 
      install_name_tool -change oldName newName fileName  i.e install_name_tool -change $ROOTSYS/lib/libNet.dylib libNet.dylib libPyROOT.dylib
4. Update etc/system.rootrc to include the lines:
   # As suggested by Wilko, April, 2009, so that when a job writes to xrootd, missing directories are created upon request.
   XNet.Mkpath: 1
5. Copy the following into $GLAST_EXT using the directory structure:
   ROOT/v5.26.00a-gl2/gcc40/
   README bin build-tiger.log cint config-tiger.log doc etc fonts icons include lib macros man test tutorials

snowleopard-i386-32bit-gcc42

1. Obtain Fermi's copy of the source from /afs/slac/g/glast/ground/GLAST_EXT/srcExtlibs/root-v5.26.00a-gl2.tar.gz and unpack, it will be dumped into a directory named "root"
2. setup your environment, where we have cd'd into the root directory created when the source was unpacked:
   setenv GLAST_EXT /afs/slac/g/glast/ground/GLAST_EXT/snowleopard-i386-32bit-gcc42/
   setenv ROOTSYS $PWD
   setenv LD_LIBRARY_PATH ${ROOTSYS}/lib:${ROOTSYS}/lib/root
   setenv PATH            ${GLAST_EXT}/python/2.6.5/gcc40/bin:/bin:/sbin:/usr/b
   in:/usr/sbin:@sys/usr/bin:${ROOTSYS}/bin
   setenv PYTHONHOME ${GLAST_EXT}/python/2.6.5/gcc40/lib/python2.5
   setenv PYTHONPATH ${PYTHONHOME}:${ROOTSYS}/bin:${ROOTSYS}/lib
   setenv DYLD_LIBRARY_PATH ${ROOTSYS}/lib
3. Run configure:
   ./configure --disable-mysql --enable-python --with-python-incdir=$GLAST_EXT/python/2.6.5/gcc40/include/python2.5 --with-python-libdir=$GLAST_EXT/python/2.6.5/gcc40/lib/python2.6/config --enable-roofit --disable-odbc --enable-minuit2 --enable-unuran --enable-table --enable-explicitlink --with-gccxml=$GLAST_EXT/ROOT/gccxml/gccxml-build/bin --enable-gdml --enable-genvector --enable-mathcore --enable-mathmore --with-gsl-incdir=$GLAST_EXT/ROOT/gsl-1.10/include --with-gsl-libdir=$GLAST_EXT/ROOT/gsl-1.10/lib --with-fftw3-incdir=$GLAST_EXT/fftw/3.1.2/gcc40/include/fftw --with-fftw3-libdir=$GLAST_EXT/fftw/3.1.2/gcc40/lib > & config-snowleopard.log &

1. Build by running "make >& build-snowleopard.log &"
2. libPyROOT.dylib must be rebuilt, due to a need to make it a "bundle" rather than "shared library":
   cd into pyroot/src directory and do:
   g++ -flat_namespace -bundle *.o -bundle_loader $GLAST_EXT/python/2.5.1-g3/gcc40/bin/python -L$ROOTSYS/lib -ldl -lCore -lCint -lRIO -lNet -lHist -lGraf -lGraf3d -lGpad -lTree -lMatrix -lMathCore -lThread -lReflex -L$GLAST_EXT/python/2.5.1-gl3/gcc40/lib/python2.5/config -lpython2.5 -o libPyROOT.dylib
   See:  https://savannah.cern.ch/bugs/index.php?22003
3. The *.dylib files will have their references to other ROOT libraries hard-coded.  This must be fixed before the libraries can be distributed.  Both the ids and the ROOT libraries referenced must be updated.
   1. First check the id and references using:
      otool -L name.dylib.  i.e.  otool -L libCint.dylib
   2. Next update the id using the command: 
      install_name_tool -id newID fileName  i.e. install_name_tool -id libCint.dylib libCint.dylib
   3. For any ROOT libraries referenced do: 
      install_name_tool -change oldName newName fileName  i.e install_name_tool -change $ROOTSYS/lib/libNet.dylib libNet.dylib libPyROOT.dylib
4. Update etc/system.rootrc to include the lines:
   # As suggested by Wilko, April, 2009, so that when a job writes to xrootd, missing directories are created upon request.
   XNet.Mkpath: 1
5. Copy the following into $GLAST_EXT using the directory structure:
   ROOT/v5.26.00a-gl2/gcc42/
   README bin build-tiger.log cint config-tiger.log doc etc fonts icons include lib macros man test tutorials

v5.26.00a-gl1

Includes patch to TMVA Config.h and Config.cxx for windows

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