Enabling android-21 builds

[dl1ksv]

This patch enables python to be build for android-21 and fixes the problems for using gcc >=4.8, too

[inclement]

Thanks for this patch, it looks good but I guess someone should test it before merging - I'll try to do it soon if nobody else does as I'll need to address the archs thing anyway for the p4a revamp.

About the arch, is the move to armeabi-v7a only an official change in android 5.0? I didn't know that, is there a doc page about it?

[dl1ksv]

Without the arch change I get
/opt/android-ndk/platforms/android-21/arch-arm/usr/include/machine/cpu-features.h:52:6: error: #error Unknown or unsupported ARM architecture

error Unknown or unsupported ARM architecture

  ^

/home/schroer/python-for-android/src/jni/../jni/jpeg/jddctmgr.c:31:8: warning: #warning "ANDROID_ARMV6_IDCT is disabled" [-Wcpp]
#warning "ANDROID_ARMV6_IDCT is disabled"
^

I tested with the compass example on an nexus 7.

[inclement]

That's interesting, I'll check it at the time. I guess it should be okay though, my understanding was that most devices support it now and maybe if you target that api they must support it.

There might be an issue with ctypes, I remember a mention that it didn't work with v7a compilation, though that may be out of date or refer to something slightly different. Just noting it here for reerence.

[thopiekar]

+1 for this pull 💃

[inclement]

I'll merge this, sorry for the delay, I was hoping someone who knows more about it could try it. Since it's currently broken with that api, I guess it's fine. I'm still concerned about the ctypes thing, has anyone happened to try it?