Description of problem:
the libsvm spec file wrongly assumes that there's always a ../SOURCES directory
and tries to copy files from there.
This fails when you run rpmbuild like this:
--define "_sourcedir $HOME/source/" or have it defined differently in your rpmrc.

Version-Release number of selected component (if applicable):
libsvm-2.85-3.fc9

  
Actual results:
+ cp ../../SOURCES/log ChangeLog
cp: cannot stat `../../SOURCES/log': No such file or directory
error: Bad exit status from /var/tmp/libsvm-2.85-3.fc9.src.rpm/rpm-tmp.33063 (%prep)


Additional info:
log and guide.pdf are already defined as Source1 and Source2, so you just need
to change the cp commands to
cp %{SOURCE1} ChangeLog
cp %{SOURCE2} .