ZVD007@DMSWWU1C.BITNET (Ulrich Kuehn) (04/30/91)
I'm using now g++ and tried to use gdb for debugging, but there are no symbols in the programfiles. I read in a readme-file that I haveto use sym-ld for filling the prg-file with debugging info, but I dont know how to use it. Can someone give me a hint? Thanks in advance Ulrich Kuehn
warwick@cs.uq.oz.au (Warwick Allison) (05/01/91)
>I'm using now g++ and tried to use gdb for debugging, but there are no >symbols in the programfiles. I read in a readme-file that I haveto use >sym-ld for filling the prg-file with debugging info, but I dont know how >to use it. Can someone give me a hint? >Thanks in advance From the gnu (.dvi :-) manual: `-gg' Produce debugging information in GDB's own format. This requires the GNUassembler and linker in order to work. `sym-ld.ttp' is a special version of the linker. Its sole purpose is to create a special symbol file used by the GNUdebugger. The following example shows the usage.(`$' is the prompt of a CLI, `*' is the GDB prompt, `#' marks a comment) $ gcc -c -gg foo.c # compile `foo.c' $ gcc -o foo.prg foo.o # linkwith normal `gcc-ld.ttp' $ sym-ld -r -o foo.sym $(GNULIB)"crt0.o foo.o -lgnugdb (or -lgdb) # link with `sym-ld.ttp' to get symbol file $ gdb * exec-file foo.prg # executable (`gcc-ld.ttp' linked Atari executable) * symbol-file foo.sym # symbols file (`sym-ld.ttp' `-r -o' linked) * run * <start doing gdb commands here> : : : * q $ # back Note the line in the example, where `sym-ld.ttp'is invoked. A library `gnugdb.olb' is used to create the symbol file. This is just like the normal library `gnu.olb' except that is was compiled. Warwick. -- _-_|\ warwick@cs.uq.oz.au / * <-- Computer Science Department, \_.-._/ University of Queensland, v Brisbane, AUSTRALIA.
timothyg@ncsa.uiuc.edu (Timothy Gallivan) (05/01/91)
[in response to a question about how to use the gnu debugger] |> $ gcc -c -gg foo.c # compile `foo.c' |> $ gcc -o foo.prg foo.o # linkwith normal `gcc-ld.ttp' |> $ sym-ld -r -o foo.sym $(GNULIB)"crt0.o foo.o -lgnugdb (or -lgdb) |> # link with `sym-ld.ttp' to get symbol file |> $ gdb |> * exec-file foo.prg # executable (`gcc-ld.ttp' linked Atari |> executable) |> * symbol-file foo.sym # symbols file (`sym-ld.ttp' `-r -o' linked) |> * run |> * <start doing gdb commands here> |> : : : |> * q |> $ # back |> Well, that is what the instructions say. When I follow this procedure, I get bombs after 'symbol-file foo.sym'. I have yet to hear from anyone who has been able to get gdb to work. I have heard from several people who cannot. Good Luck! Can anyone help the poor souls who are without a debugger? Tim Gallivan timothyg@ncsa.uiuc.edu