Hi Tobias,
while -Wcompare-reals is a useful option to find bugs, practical experience and the discussion here and on c.l.f has shown that this option has too many false positives. Hence, it is not suitable for -Wall.
With patch, -Wall no longer implies -Wcompare-reals. Build on x86-64-linux. OK for the trunk?
Please also revert the change to bessel_5.f90. I am also currently looking at a way to include the option in -Wextra (which I think is suitable). We currently don't handle -Wextra in gfortran, which makes this a bit more difficult. However, I will only find time for this in around two weeks. OK for trunk. Thomas