Just a quick comment based on what I see in http://bazaar.launchpad.net /~ubuntu-branches/ubuntu/precise/libjpeg- turbo/precise/view/3/simd/jsimd_arm.c:
Yes, the current code looks a bit dodgy... you'll need to open /proc/self/auxv instead of trying to find the auxv data by scanning from envp. Except in native assembler programs which do not use a C library, there's no guarantee that the auxv data will be present at the end of the environment since the C library may have overwritten or moved the initial environment block since the process started. AFAIK, libc doesn't provide any API for getting at the auxv data, so reading /proc/self/auxv or /proc/cpuinfo is the only option (and /proc/self/auxv has a more fixed, easier-to-parse format) -- You received this bug notification because you are a member of Linaro Maintainers, which is the registrant for libjpeg-turbo. https://bugs.launchpad.net/bugs/911860 Title: android neon detection busticated Status in An optimized libjpeg replacement: Triaged Bug description: hwcap.h and link.h appears to be both missing from Android ICS. The old NEON detection is fragile. We need a newer and more reliable method of detecting if NEON is available for use on Android. To manage notifications about this bug go to: https://bugs.launchpad.net/libjpeg-turbo/+bug/911860/+subscriptions -- Mailing list: https://launchpad.net/~linaro-pkg Post to : [email protected] Unsubscribe : https://launchpad.net/~linaro-pkg More help : https://help.launchpad.net/ListHelp
