Windows build failing in a new way

[Simon Peyton Jones]

My windows build is more broken than usual.  I can't even build a GHC.
Please, could someone fix this?  I'm getting desperate.
Simon


libtool: compile:  C:/code/HEAD/inplace/mingw/bin/gcc.exe -DHAVE_CONFIG_H -I. -I.. -I. -I../include -Iinclude -I../src -Wall -Werror -fno-stack-protector -w -fexceptions -MT src/x86/ffi64.lo -MMD -MP -MF src/x86/.deps/ffi64.Tpo -c ../src/x86/ffi64.c -o src/x86/ffi64.o

depbase=`echo src/x86/unix64.lo | sed 's|[^/]*$|.deps/&|;s|\.lo$||'`;\

/bin/sh ./libtool    --mode=compile C:/code/HEAD/inplace/mingw/bin/gcc.exe -DHAVE_CONFIG_H -I. -I..  -I. -I../include -Iinclude -I../src  -I. -I../include -Iinclude -I../src -Wall -Werror -fno-stack-protector -w -MT src/x86/unix64.lo -MMD -MP -MF $depbase.Tpo -c -o src/x86/unix64.lo ../src/x86/unix64.S &&\

mv -f $depbase.Tpo $depbase.Plo

libtool: compile:  C:/code/HEAD/inplace/mingw/bin/gcc.exe -DHAVE_CONFIG_H -I. -I.. -I. -I../include -Iinclude -I../src -I. -I../include -Iinclude -I../src -Wall -Werror -fno-stack-protector -w -MT src/x86/unix64.lo -MMD -MP -MF src/x86/.deps/unix64.Tpo -c ../src/x86/unix64.S -o src/x86/unix64.o

../src/x86/unix64.S: Assembler messages:

../src/x86/unix64.S:45: Error: junk at end of line, first unrecognized character is `f'

../src/x86/unix64.S:204: Error: junk at end of line, first unrecognized character is `f'

../src/x86/unix64.S:208: Error: junk at end of line, first unrecognized character is `f'

../src/x86/unix64.S:326: Error: junk at end of line, first unrecognized character is `f'

../src/x86/unix64.S:334: Error: junk at end of line, first unrecognized character is `,'

make[5]: *** [Makefile:1335: src/x86/unix64.lo] Error 1

make[5]: Leaving directory '/c/code/HEAD/libffi/build/x86_64-pc-msys'

make[4]: *** [Makefile:1596: all-recursive] Error 1

make[4]: Leaving directory '/c/code/HEAD/libffi/build/x86_64-pc-msys'

make[3]: *** [Makefile:730: all] Error 2

make[3]: Leaving directory '/c/code/HEAD/libffi/build/x86_64-pc-msys'

make[2]: *** [Makefile:608: all-all] Error 2

rts/ghc.mk:494: rts/dist/build/.depend-v-l-debug-thr-thr_debug-thr_l.c_asm: No such file or directory

make[1]: *** [libffi/ghc.mk:115: libffi/stamp.ffi.static.build] Error 2

make: *** [Makefile:127: all] Error 2

/c/code/HEAD$
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