just '-O' optimization during octave-3.4.2 compilation

[Sergei Steshenko]

Hello,

I am compiling octave-3.4.2 at the moment and I've noticed
a lot of instances in which just '-O' instead of, say, '-O2'
optimization is used, for example:

/mnt/sdb8/sergei/AFSWD_debug/20110601/bash-4.1/bin/bash ../libtool --tag=F77   
--mode=compile gfortran -O -mieee-fp -O -mieee-fp -c -o ranlib/advnst.lo 
ranlib/advnst.f
libtool: compile:  gfortran -O -mieee-fp -O -mieee-fp -c ranlib/advnst.f  -fPIC 
-o ranlib/.libs/advnst.o
libtool: compile:  gfortran -O -mieee-fp -O -mieee-fp -c ranlib/advnst.f -o 
ranlib/advnst.o >/dev/null 2>&1
/mnt/sdb8/sergei/AFSWD_debug/20110601/bash-4.1/bin/bash ../libtool --tag=F77   
--mode=compile gfortran -O -mieee-fp -O -mieee-fp -c -o ranlib/genbet.lo 
ranlib/genbet.f
libtool: compile:  gfortran -O -mieee-fp -O -mieee-fp -c ranlib/genbet.f  -fPIC 
-o ranlib/.libs/genbet.o
libtool: compile:  gfortran -O -mieee-fp -O -mieee-fp -c ranlib/genbet.f -o 
ranlib/genbet.o >/dev/null 2>&1
/mnt/sdb8/sergei/AFSWD_debug/20110601/bash-4.1/bin/bash ../libtool --tag=F77   
--mode=compile gfortran -O -mieee-fp -O -mieee-fp -c -o ranlib/genchi.lo 
ranlib/genchi.f
libtool: compile:  gfortran -O -mieee-fp -O -mieee-fp -c ranlib/genchi.f  -fPIC 
-o ranlib/.libs/genchi.o
libtool: compile:  gfortran -O -mieee-fp -O -mieee-fp -c ranlib/genchi.f -o 
ranlib/genchi.o >/dev/null 2>&1
/mnt/sdb8/sergei/AFSWD_debug/20110601/bash-4.1/bin/bash ../libtool --tag=F77   
--mode=compile gfortran -O -mieee-fp -O -mieee-fp -c -o ranlib/genexp.lo 
ranlib/genexp.f
.
Is the way it is supposed to be ?

Thanks,
  Sergei.