diff -r 7995942261f2 -r ff866c9faad2 scripts/build/companion_libs/mpfr.sh
--- a/scripts/build/companion_libs/mpfr.sh	Mon May 25 19:46:58 2009 +0000
+++ b/scripts/build/companion_libs/mpfr.sh	Tue Jun 23 22:57:12 2009 +0200
@@ -64,7 +64,8 @@
     mpfr_opt=
     # Under Cygwin, we can't build a thread-safe library
     case "${CT_HOST}" in
-        *-cygwin)   mpfr_opt="--disable-thread-safe";;
+        *cygwin*)   mpfr_opt="--disable-thread-safe";;
+        *mingw*)    mpfr_opt="--disable-thread-safe";;
         *)          mpfr_opt="--enable-thread-safe";;
     esac