On Mon, Feb 11, 2013 at 01:43:32PM -0600, Scott Wood wrote: > On 02/07/2013 02:01:05 AM, tiger...@viatech.com.cn wrote: > >Hi, experts: > >I have a JTAG debugger. > >Its manual suggested user should add "-gdwarf-2" option in the arm gcc > >compiler. > >Because it could produce debugging information. > > > >But I searched the whole uboot source package, could not find > >"-gdwarf-2" option in config.mk or other files. > > > >Why? > > I think it's already the default with most toolchains. Do you see > any difference in the output when supplying that flag?
Indeed. For most common values of gcc versions, using -g will pick the "best" choice for debug information and this will be DWARF2 information already. There is no need to specify -gdwarf-2 (or similar). -- Tom
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