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).
>From the description, it looks like the switch addresses three issues: (1) compilation time, (2) 'debugging experience', and (3) runtime performance. I'm not clear on the debugging experience. I normally use a debug configuration of "-O0 -g3". -g3 ensure things like #defines and symbolic constant are available if needed. What "n" does -Og correspond to for -O and -g (i.e., -O1, -O2; -g2, -g3)? Is there any interaction with -ggdb? As I understand it, -ggdb is currently not used for anything even though the man pages tell us its for GDB extensions. Is -Og -g3 a valid combination to get the benefits of -Og with maximum symbol support? Is it even needed? Jeff "A new general optimization level, -Og, has been introduced. It addresses the need for fast compilation and a superior debugging experience while providing a reasonable level of runtime performance. Overall experience for development should be better than the default optimization level -O0."
