[guardian-dev] Confused by Android-L PIE

[Paul Gardner-Stephen]

Hello,

Correct, libraries are always position independent.  This is how we dealt
with this problem in Serval Mesh, by only using servald as a library.

Paul.

On Fri, Nov 7, 2014 at 5:39 AM, Nathan of Guardian <
nathan at guardianproject.info> wrote:

> I finally updated my Nexus 7 to use the latest Android L/5.0 developer
> preview ROMs
>
> I've updated Orbot's Makefile to support a simple command line arg for
> enabling PIE or not:
>
> https://github.com/n8fr8/orbot/commit/7f50f79b0e3ebbb0dd97845445dbb693f3fd541c
>
> For PIE-enabled/Android-16 binaries:
> > make polipo PIEFLAGS="-fPIE -pie" NDK_PLATFORM_LEVEL="16"
>
> For non-PIE/Android-9 through 15 binaries:
> > make polipo PIEFLAGS="" NDK_PLATFORM_LEVEL="9"
>
> I can verify that if I try to run the non-PIE binaries on L, they do not
> work.
>
> Now, when I decided to install Courier (securereader) and ChatSecure
> from the Google Play store existing versions, they both installed and
> executed perfectly. They both contain native code, but they are used as
> shared libraries and not command line executables like with Orbot.
>
> So, does that mean the PIE setting only affected executables and not
> libraries, perhaps?
>
>
> --
>   Nathan of Guardian
>   nathan at guardianproject.info
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