tool initialization will fail.
+Sets the host arch for Visual Studio compiler. If not set, default to the
+detected host architecture: note that this may depend on the python you are
+Valid values are the same as for &cv-TARGET_ARCH;.
+Sets the target arch for Visual Studio compiler (i.e. the arch of the binaries
+generated by the compiler). If not set, default to &cv-HOST_ARCH;.
+Valid values are 'x86', 'i386' (for 32 bits), 'amd64', 'emt64', 'x86_64' (64
+bits) and 'ia64' (Itanium). For example, if you want to compile 64 bits
+binaries, you would set TARGET_ARCH='x86_64' in your environment.