Building with older Android NDK: getauxval not available

[hrydgard]

The tangle of #ifdefs in CpuArch.h decides that getauxval is available on ARM32 in old Android NDKs, but it just isn't. This breaks my upgrade of libchdr in PPSSPP: hrydgard/ppsspp#20462

Can we have a DONT_HAVE_AUXVAL define or something, so I don't have to fork?

Or, just do something like

# if __ANDROID_API__ < 18
 // don't use getauxval
#endif

[rtissera]

Hi @hrydgard ,

Thanks for bringing up the issue.
Yes, if you can open PR, I will gladly merge it, or check if it is fixed in recent LZMA SDK releases, then I can just bump it.

Congrats for the v1.19 release of PPSSPP btw.

[hrydgard]

@rtissera Thanks, PR submitted.