Why can not install kernel headers?

[mobile.parmenides]

I am reading an article about kernel header installtion, its links as follows: 
http://lxr.linux.no/#linux+v2.6.32/Documentation/make/headers_install.txt#L11

Following a command given by the article:
		make headers_install ARCH=i386 INSTALL_HDR_PATH=/usr/include
the kernel headers should be installed into '/usr/include'. However, when checking 
'/usr/include/linux' and '/usr/include/asm', I found actually these kernel headers have
not installed (by checking timestamps). 

In fact, kernel headers have be installed into 'include' subdirectory of kernel top-level 
directory. Obviously,  the 'INSTALL_HDR_PATH' parameter in the above command 
does not take effect. Is there any way to deal with the problem? If I have to use 'cp' to
install headers by hand, the 'INSTALL_HDR_PATH' seems not to play its roles.



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mobile.parmenides