GMP 5.1.1 make check fail on Solaris 11

[Torbjorn Granlund]

Marc Glisse <marc.glisse at inria.fr> writes:

  > FAIL: t-ops2 <-- 'trunc' symbol issue
  
  By that you mean we are missing the -lm flag when linking?
  
  Torbjorn, would it be ok if I appended -lm to LDADD in
  tests/cxx/Makefile.am, or are there better ways?

I am always curious why something is needed.  The file makes several
references to symbols that are in libm, not just trunc but floor and
ceil.  Why does it work for the other symbls and on so many machines?

Is there perhaps some automagic handling of linking to libraries with
g++?

(I don't see problems with libm dependencies from the test suite or GMP
utility programs, but we should really avoid them in the library
itself.)

-- 
Torbjörn