Hi lehe, > I was wondering what the difference between -g, -ggdb and -ggdb3 as option for gcc? -g produces debugging information in the OS¹s native format (stabs, COFF, XCOFF, or DWARF 2). -ggdb produces debugging information specifically intended for gdb. -ggdb3 produces extra debugging information, for example: including macro definitions. -ggdb by itself without specifying the level defaults to -ggdb2 (i.e., gdb for level 2). It is *possible* (I've heard) that the -ggdb can produce debugging information that can confuse other debuggers if you are not using gdb. I only use gdb, so I cannot confirm or refute that rumor. So... If you use gdb, use -ggdb (same as -ggdb2), or -ggdb1 (to help reduce the debug footprint), or -ggdb3 (for additional debugging info). If you do not use gdb... Use -g and keep in mind that gdb works with the OS's native format too. I use -g even though I use gdb exclusively when I use gcc/g++. I could use -ggdb ... but I forget to type those extra three characters. HTH, --Eljay
