------- Comment #4 from davek at gcc dot gnu dot org 2010-04-15 01:17 ------- So the ideal fix would be to change "#ifdef FIONREAD" to something more like "#if HAVE_IOCTL && defined (FIONREAD)". But that runs into the need-link-test vs. cross-configure problem.
MinGW doesn't have sys/ioctl.h; could we test HAVE_SYS_IOCTL_H? Are there likely to be any platforms we support that define FIONREAD but don't have sys/ioctl.h? -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43738
