Build fails using latest lib7zip + LZMA SDK on Windows 8

[GoogleCodeExporter]

What steps will reproduce the problem?
1. Download latest stable LZMA SDK (9.20 as of writing), extract.
2. Load up MSYS with MinGW, export P7ZIP_SOURCE_DIR to root of LZMA SDK 
location.
3. Run configure && make.

What is the expected output? What do you see instead?
I'd expect it to compile normally. Configure reports:

config.status: executing p7zip_src_cpp_link commands
ln: `includes/CPP/CPP': cannot overwrite directory
config.status: executing p7zip_src_c_link commands
ln: `includes/C/C': cannot overwrite directory

Make still runs, but quits on this error:

make[1]: *** No rule to make target `../includes/CPP/Common/MyWindows.cpp', 
needed by `lib7zip_a-MyWindows.o'. Stop.
make[1]: Leaving Directory `/f/Libraries/lib7zip/Lib7Zip'
make: *** [all-recursive] Error 1

What version of the product are you using? On what operating system?
OS: Windows 8 64-bit
lib7zip: 1.6.5 (latest as of writing)
LZMA SDK: 9.20 (also latest)

Please provide any additional information below.

Original issue reported on code.google.com by [email protected] on 29 Sep 2013 at 12:46