http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50378
--- Comment #9 from Tobias Burnus <burnus at gcc dot gnu.org> 2011-09-14 08:50:04 UTC --- (In reply to comment #8) > x86_64-unknown-linux-gnu/4.7.0/f951: > symbol lookup error: > undefined symbol: mpfr_get_z_exp > > Never got this one, I have mpfr-3.0.0-4 See http://www.mpfr.org/mpfr-3.0.0/#changes and http://www.mpfr.org/mpfr-3.0.1/mpfr.html#Changed-Functions "mpfr_get_z_exp changed in MPFR 3.0 [...] this function has been renamed to mpfr_get_z_2exp in MPFR 3.0" and "mpfr_get_z_exp is still available via a macro in mpfr.h". Seemingly, you have a f951 which has been compiled with MPFR 2.x but you run it with MPFR 3. In that case, the macro does not help. gfortran calls this function for real-to-integer conversions, which seems to be the only use.
