iOS duplicate symbols from different versions of the same library

Question

App A requires third-party libraries B and C. Both B and C include different versions of library D (from a further third-party). No third-party source code is available. This will give duplicate symbol errors when linking the app.

What solutions are available?

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Related question involving identical libraries, allowing one copy to simply be deleted: How to handle duplicate symbol error from 3rd party libraries?

Answer 1

This was solved by renaming the conflicting symbols in B (and its version of D if separate). This can be done directly on the binary as long as the renames are the same length as the originals (e.g. by reversing the library prefix).

local $/ = "\0";
open my $fh, '<+', $library;
binmode $fh;

while (my $field = <$fh>) {
    my $length = length $field;
    chomp $field;

    if (defined $translation{$field}) {
        seek $fh, -$length, SEEK_CUR;
        print $fh $translation{$field};
    }
}