> From: Nick Roberts <[EMAIL PROTECTED]> > Date: Thu, 5 May 2005 22:58:45 +1200 > Cc: Stefan Monnier <[EMAIL PROTECTED]>, emacs-devel@gnu.org > > As I'm sure you know, GCC (3.1 onwards) provides macro information if you > specify the options -gdwarf-2 and -g3.
On GNU/Linux, perhaps, but not on all platforms supported by GCC. > If gdb can expand macros using macro information from the executable > (which requires knowledge of include paths and predefined macros), why > can't cpp (or gcc -E) ? Actually, GDB doesn't know anything about paths and predefined macros, it simply uses the information about macros recorded by the compiler in the DWARF-2 debug info. That's why you need to use -g3: this tells the compiler to record macro information. _______________________________________________ Emacs-devel mailing list Emacs-devel@gnu.org http://lists.gnu.org/mailman/listinfo/emacs-devel
