*** Compiling Pythia6 ................ 
*** Unpacking pythia6.tar.gz ..............
-- The C compiler identification is GNU
-- The CXX compiler identification is GNU
-- Check for working C compiler: /usr/bin/gcc
-- Check for working C compiler: /usr/bin/gcc -- works
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Check for working CXX compiler: /usr/bin/g++
-- Check for working CXX compiler: /usr/bin/g++ -- works
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- The Fortran compiler identification is GNU
-- Check for working Fortran compiler: /usr/bin/gfortran
-- Check for working Fortran compiler: /usr/bin/gfortran  -- works
-- Detecting Fortran compiler ABI info
-- Detecting Fortran compiler ABI info - done
-- Checking whether /usr/bin/gfortran supports Fortran 90
-- Checking whether /usr/bin/gfortran supports Fortran 90 -- yes
-- Configuring done
-- Generating done
-- Build files have been written to: /home/spataro/trunk/generators/pythia6/build
Scanning dependencies of target Pythia6
[ 25%] Building Fortran object CMakeFiles/Pythia6.dir/pythia6319.f.o
f951: error: unrecognized command line option ‘-fno-second_underscore’
make[2]: *** [CMakeFiles/Pythia6.dir/pythia6319.f.o] Errore 1
make[1]: *** [CMakeFiles/Pythia6.dir/all] Errore 2
make: *** [all] Errore 2
**** Checking libraries in /home/spataro/trunk/generators/lib ****
*** ERROR: Pythia6 could not be created.
*** End installation of external packages with Errors***
spataro@briareos:~/trunk$ 

#Set_Source_Files_Properties(${Pythia_FSRCS} PROPERTIES COMPILE_FLAGS
#                           ${UnderScoreString})