-ffunction-sections build flag

[Stephen Quinney <sjq@compsoc.dur.ac.uk>]

I uploaded a new package (libastro-fits-cfitsio-perl) the other night
and got back a FTBFS (bug #155728) for the hppa architecture with the
message that hppa needs the -ffunction-sections flag in order to
build. I was wanting to know if someone could tell me whether this is
an option I will only ever need for hppa or whether it is an option
that is required with particular versions of gcc? I was also wondering
if there is a way, e.g. via autoconf, that I could test for the need
for the extra flag?

Thanks,
	Stephen Quinney

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