http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47648
--- Comment #5 from Tobias Burnus <burnus at gcc dot gnu.org> 2011-02-22 10:57:48 UTC --- STATUS: - libgfortran uses the same check as libquadmath; thus, there should be no build issue anymore as libquadmath support is disabled for libgfortran. (The Fortran FE still can generate calls for REAL(16).) - The issue that on FreeBSD libquadmath is not supported remains unsolved. The problem is that some support (_U_Q*) is missing. The support could come either from FreeBSD's libc or from libgcc. Cf. bug 47649 comment 5.