apparently mpfr needs a cygwin-specific patch: https://cygwin.com/cgi-bin2/package-cat.cgi?file=x86_64%2Fmpfr%2Fmpfr-3.1.4-1-src&grep=mpfr and it seems that Sage does not contain it.
(Sage/cygwin used to work, with an older mpfr, but then an update was done, without any cygwin-specific patches...) On Saturday, March 26, 2016 at 2:06:19 PM UTC, Witold Żarowski wrote: > > I'm trying to install Sage on Windows 8.1/Cygwin. > I'm getting the following error after make command (found in > mpfr-3.1.4.log): > =============================== > In file included from exceptions.c:23:0: > mpfr-impl.h:261:4: error: #error "__unix__ is defined and __GMP_LIBGMP_DLL > is true" > # error "__unix__ is defined and __GMP_LIBGMP_DLL is true" > ^ > mpfr-impl.h:264:4: error: #error "Both __unix__ and > MPFR_WIN_THREAD_SAFE_DLL are defined" > # error "Both __unix__ and MPFR_WIN_THREAD_SAFE_DLL are defined" > ^ > =============================== > > -- You received this message because you are subscribed to the Google Groups "sage-devel" group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-devel+unsubscr...@googlegroups.com. To post to this group, send email to sage-devel@googlegroups.com. Visit this group at https://groups.google.com/group/sage-devel. For more options, visit https://groups.google.com/d/optout.