Arnd Bergmann wrote:
Unfortunately, there is no generic way to detect the word size yet, but every architecture uses its own preprocessor macro (__x86_64__, __s390x__, __ppc64__). We also can't use CONFIG_64BIT in an user-exported interface header file, because the use space can also be compiled for 32 bits when the kernel uses 64 bits.
Actually, gcc does have the _LP64 and __SIZEOF_POINTER__ macros (as well as __CHAR_BIT__), although I don't know how far back it does have that. If it has been with us for long enough it might be possible to switch over to using panarch macros.
-hpa -- To unsubscribe from this list: send the line "unsubscribe linux-api" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
