2013/2/25 Jeffrey Walton <noloa...@gmail.com>: > Hi All, > > I read the relase notes on GCC 4.8 > (http://gcc.gnu.org/gcc-4.8/changes.html) and -Og caught my eye (the > bulleted item is below). [deleted] > > What "n" does -Og correspond to for -O and -g (i.e., -O1, -O2; -g2, -g3)? [deleted] > Is -Og -g3 a valid combination to get the benefits of -Og with maximum > symbol support? Is it even needed? > > Jeff >
To my understanding, '-Og' selects optimization level 1 so that you can have fast compilation and a superior debugging experience. You still need to use -g (or -g3, which is the option you normally use.) to guide GCC output debug information. Refer to following link for some -Og implementation detail: http://gcc.gnu.org/ml/gcc-patches/2012-08/msg00616.html Best regards, jasonwu
