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download the most recent GDB from https://www.sourceware.org/gdb/download/
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expand the gdb-7.12.1.tar.xz file:
tar xopf gdb-7.12.1.tar.xz
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cd gdb-7.12.1
in terminal to open the gdb folder -
then follow the instructions in the README file in the gdb folder, or simply follow the following steps:
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./configure
, wait for the terminal -
make
and wait again (which can take some time) -
sudo make install
Now gdb is installed at /usr/local/bin/