Choose lldb over gdb and find proper extension of library#83

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denofevil merged 5 commits intoruby-debug:masterfrom

equivalence1:ruby-attach-to-process

Oct 4, 2016

Commits on Sep 29, 2016

added debug output if `--debug` key specified.

equivalence1
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dmitrii.kravchenko
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It is essential for lldb connecting to OS X's ruby process to specify function type. Under OS X (due to compilation keys, I guess) lldb does not know type of ruby functions so we need to write them…

equivalence1
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dmitrii.kravchenko
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Gdb does not understand ruby symbol table under OS X (I guess it does not understand darwin debug format). That make it essential to prefer lldb over gdb (lldb works fine).

equivalence1
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dmitrii.kravchenko
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Attach lib can have different extension than '.so' (e.g. '.bundle' under OS X). So we need to find appropriate one manually.

equivalence1
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dmitrii.kravchenko
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Commits on Oct 4, 2016

fixes for lldb-3.6. `print` does not work there. output works bad after `thread select`. replaced debug output with more representative.

equivalence1
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dmitrii.kravchenko
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