[Bug 737429] Android runtime contains libs with rpath

[GStreamer (GNOME Bugzilla)]

https://bugzilla.gnome.org/show_bug.cgi?id=737429

Andrew Esh <andrew.c.esh at gmail.com> changed:

           What    |Removed                     |Added
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                 CC|                            |andrew.c.esh at gmail.com

--- Comment #6 from Andrew Esh <andrew.c.esh at gmail.com> ---
I ran into this as well. Upgrading from the gstreamer-sdk to the gstreamer
version of cerbero fixed all the other rpath problems I was having except libz.

The Android linker will emit a message such as "'libgiognutls.so' library has
invalid DT_NEEDED entry
'/home/andrewes/cerbero/dist/android_armv7/lib/libz.so'", but it appears to
find and use the library anyway.

Code which emits the linker message and corrects the path can be seen at the
bottom of: https://android.googlesource.com/platform/bionic/+/c3351ea%5E!/

I got rid of the warning message by hand-editing the .so files that have the
rpath entry by overwriting the first bytes of the path with "libz.so\0".

Note that the NDK also provides a version of libz.so, which may be what is
causing the build to try to specify a "private" version within the cerbero
build. We need control over that path, since it is obviously wrong for Android.

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