this is working good in 64bits with msys2 (mingw64 shell):
mkdir libfreefare-build git clone https://github.com/nfc-tools/libfreefare.git cd libfreefare-build cmake -G "MinGW Makefiles" -DCMAKE_BUILD_TYPE=Release ../libfreefare -DLIBNFC_INCLUDE_DIRS=yourpath/to/libnfc/include -DLIBNFC_LIBRARIES=yourpath/to/libnfc.dll mingw32-make
and I had also to comment CmakeLists.txt, lines 41,43,44 to not force 32 bits
# add_definitions("-m32")
add_definitions("-DNOCRYPT")
#set(CMAKE_SHARED_LINKER_FLAGS -m32)
#set(CMAKE_EXE_LINKER_FLAGS -m32)
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