Bug#890466: rrdtool: FTBFS on m68k: math not IEEE-compliant

["Aaron M. Ucko" <ucko@debian.org>]

Source: rrdtool
Version: 1.7.0-1
Severity: normal
User: debian-68k@lists.debian.org
Usertags: m68k

The build of rrdtool 1.7.0-1 for m68k (admittedly not a release
architecture) failed, per the below excerpt from
https://buildd.debian.org/status/fetch.php?pkg=rrdtool&arch=m68k&ver=1.7.0-1&stamp=1518247574&raw=0:

  IEEE Math Checks
  checking for fpclassify... no
  checking for fpclassify with <math.h>... yes
  checking for isinf... yes
  checking whether isfinite is broken... no
  checking if IEEE math works out of the box... not isinf(oo) ... no
  checking if IEEE math works with the -ieee switch... no
  checking if IEEE math works with the -qfloat=nofold switch... no
  checking if IEEE math works with the -w -qflttrap=enable:zerodivide... no
  checking if IEEE math works with the -mieee switch... no
  checking if IEEE math works with the -q float=rndsngl switch... no
  checking if IEEE math works with the -OPT:IEEE_NaN_inf=ON switch... no
  checking if IEEE math works with the -OPT:IEEE_comparisons=ON switch... no
  checking if IEEE math works with fpsetmask(0)... no
  checking if IEEE math works with signal(SIGFPE,SIG_IGN)... not isinf(oo) ... no
  configure: error: 
  Your Compiler does not do proper IEEE math ... Please find out how to
  make IEEE math work with your compiler and let me know (tobi@oetiker.ch).
  Check config.log to see what went wrong ...

Could you (or the porters, X-Debbugs-Cc:ed) please take a look?

Thanks!

-- 
Aaron M. Ucko, KB1CJC (amu at alum.mit.edu, ucko at debian.org)
http://www.mit.edu/~amu/ | http://stuff.mit.edu/cgi/finger/?amu@monk.mit.edu