https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77593
--- Comment #8 from tprince at computer dot org --- I show my configure parameters in my test results posts. At some time in the past, each of them has been important. I don't know if the parameters quoted by cygwin release pertain to cross compiling. As the parameters I use have been successful again last week on win8.1 I don't see how they might pertain to the f951 bootstrap failure on win10. When I get back to the win10 box I will compare with disable bootstrap.