Fahd Abidi wrote:
Hello,
I am debugging u-boot with a BDI and am running into a case where a variable gets optimized out. For the sake of debugging I am trying to turn off optimizations. I have the following in u-boot-2009.01/config.mk, but GDB still reports optimizations:
OPTFLAGS= -Os -fno-schedule-insns -fno-schedule-insns2 #-fomit-frame-pointer
(gdb) stepi
0x0ff78750 in get_table_entry_name (table=<value optimized out>,
If you (temporarily) put "volatile" on the variable, the compiler should not optimize it out. Obviously, this is a limited solution, but may get your past your problem.
[snip]
Does anyone know how to completely turn optimization off? Using no -O flag results in u-boot not compiling.
Theoretically, you could compile individual files w/o optimization (e.g. if you compile it by hand, make shouldn't re-compile it). I doubt that you want to go there, though...
Fahd Abidi
Good luck, gvb