# Installing `gdb` in mac

* install `gdb` binary using following scripts

>> ```sh
>> $ brew tap homebrew/dupes
>> $ brew install gdb
>> ```

* `/Applications/Utilities/Keychain Access.app`
* Open menu `/Keychain Access/Certificate Assistant/Create a Certificate`...
* Choose a name (`gdb-cert` in the example), set `Identity Type` to `Self Signed Root`, set `Certificate Type` to `Code Signing` and select the `Let me override defaults`. Click several times on `Continue` until you get to the `Specify a Location For The Certificate` screen, then set `Keychain` to `System`.
* using the contextual menu for the certificate, select `Get Info`, open the `Trust` item, and set `Code Signing` to `Always Trust`.
* You must quit Keychain Access application in order to use the certificate and restart `taskgated` service by killing the current running taskgated process (so before using gdb).

>> ```sh
>> ps -e | grep taskgated
>> sudo kill -9 <taskgated-id>
>> ```

* signing the binary using `codesign -s gdb-cert $(which gdb)`

## Reference

* [Installing GDB on OS X Mavericks](http://ntraft.com/installing-gdb-on-os-x-mavericks/)
* [official instruction](http://sourceware.org/gdb/wiki/BuildingOnDarwin)