Document gdb dependency

[Dario Minnucci]

Hi Daniel,

Please state somewhere in the documentation that 'gdb' is required for some tool in order to work.

$ grep -r "gdb " *
bin/pt-collect: gdb -ex "set pagination 0" -ex "thread apply all bt" --batch -p $p >> "$OPT_d/$d-stacktrace"
bin/pt-pmp: gdb -ex "set pagination 0" -ex "thread apply all bt" -batch -p $OPT_p >> "${OPT_k:-/tmp/percona-toolkit}"
blib/script/pt-pmp: gdb -ex "set pagination 0" -ex "thread apply all bt" -batch -p $OPT_p >> "${OPT_k:-/tmp/percona-toolkit}"
blib/script/pt-collect: gdb -ex "set pagination 0" -ex "thread apply all bt" --batch -p $p >> "$OPT_d/$d-stacktrace"
debian/percona-toolkit/usr/bin/pt-pmp: gdb -ex "set pagination 0" -ex "thread apply all bt" -batch -p $OPT_p >> "${OPT_k:-/tmp/percona-toolkit}"
debian/percona-toolkit/usr/bin/pt-collect: gdb -ex "set pagination 0" -ex "thread apply all bt" --batch -p $p >> "$OPT_d/$d-stacktrace"

[Daniel Nichter (daniel-nichter)]

Dario, gdb isn't required unless the -g option is used (pt-collect 1.0) or --collect-gdb (pt-stalk 2.0). It is, however, required by pt-pmp.

[Baron Schwartz (baron-xaprb)]

It's not actually required by pt-pmp. This tool can be run against a file full of backtraces to format them nicely, independently of executing gdb to gather them. I don't think there should be a dependency for this; rather, the tool should just do something sensible like check for gdb if it's run in a mode that requires it.

[Dario Minnucci (midget)]

Hi guys,

I'm wasn't asking for an explicit dependecy here, only a hint on the tool documentation.

Sorry for the possible misunderstanding.

[Baron Schwartz (baron-xaprb)]

Thanks, and my apologies. I should have read the OP.

[Shahriyar Rzayev (rzayev-sehriyar)]

Percona now uses JIRA for bug reports so this bug report is migrated to: https://jira.percona.com/browse/PT-756