[Bug 749423] 'Duplicate symbol' error building iOS project after adding 64 bit support

[GStreamer (GNOME Bugzilla)]

https://bugzilla.gnome.org/show_bug.cgi?id=749423

--- Comment #1 from Sebastian Dröge (slomo) <slomo at coaxion.net> ---
(In reply to Liuting from comment #0)
> duplicate symbol _ff_log2_tab in:
> /Users/liutingdu/Library/Developer/GStreamer/iPhone.sdk/GStreamer.framework/
> GStreamer(libavcodec_a_arm64_-log2_tab.o)
> /Users/liutingdu/Library/Developer/GStreamer/iPhone.sdk/GStreamer.framework/
> GStreamer(libavformat_a_arm64_-log2_tab.o)
> duplicate symbol _ff_log2_tab in:
> /Users/liutingdu/Library/Developer/GStreamer/iPhone.sdk/GStreamer.framework/
> GStreamer(libavcodec_a_arm64_-log2_tab.o)
> /Users/liutingdu/Library/Developer/GStreamer/iPhone.sdk/GStreamer.framework/
> GStreamer(libavutil_a_arm64_-log2_tab.o)

For these we have to patch libav or at least its build system. Not great.

> duplicate symbol _iconv_locale_charset in:
> /Users/liutingdu/Library/Developer/GStreamer/iPhone.sdk/GStreamer.framework/
> GStreamer(libcharset_a_arm64_-localcharset.o)
> /Users/liutingdu/Library/Developer/GStreamer/iPhone.sdk/GStreamer.framework/
> GStreamer(libiconv_a_arm64_-localcharset.o)

These shouldn't really happen. locale_charset is used by both, but we rename
the latter to iconv_locale_charset already. The former shouldn't be affected at
all by the renaming.

Not sure how that is even possible :)

> duplicate symbol _hash_pjw_bare in:
> /Users/liutingdu/Library/Developer/GStreamer/iPhone.sdk/GStreamer.framework/
> GStreamer(libgnutls-openssl_a_arm64_-hash-pjw-bare.o)
> /Users/liutingdu/Library/Developer/GStreamer/iPhone.sdk/GStreamer.framework/
> GStreamer(libtasn1_a_arm64_-hash-pjw-bare.o)
> duplicate symbol _strverscmp in:
> /Users/liutingdu/Library/Developer/GStreamer/iPhone.sdk/GStreamer.framework/
> GStreamer(libgnutls-openssl_a_arm64_-strverscmp.o)
> /Users/liutingdu/Library/Developer/GStreamer/iPhone.sdk/GStreamer.framework/
> GStreamer(libtasn1_a_arm64_-strverscmp.o)

These will have to be renamed in at least one place, but in both places might
be safer.

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