GHC fails to build when cross compiling for mingw with the message "Threads not supported"

I'm trying to build a mingw32 cross compiler. I configured with ./configure --target=x86_64-x64-mingw32, then I built with make -j 1. The build then fails with the message # error "Threads not supported" followed by some other errors. (The last part of the make log is attached)

Edited Mar 10, 2019 by Thomas Miedema

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