facebook/hhvm — pull request #3275 by swtaarrs (2014-07-25 05:01:00+00:00)
Title: Don't use -Og for debug build, and add -ggdb

-Og is great in theory but in practice it produces binaries that aren't very
debuggable. Go back to -O0. -ggdb produces more expressive debug information.

Test Plan: Built, debugged the resulting binary with significantly less pain