On Jul 30 07:37, Bernd Prager wrote: > On 7/29/2012 11:47 PM, Christopher Faylor wrote: > >On Sun, Jul 29, 2012 at 01:07:09PM -0400, Bernd Prager wrote: > >>I am trying to debug a compiled c++ program with gdb. > >> > >>When I start gdb it claims the symbols are loaded. When I try to list > >>the source code I get: > >> > >>(gdb) list > >> > >>/home/corinna/src/cygwin/cygwin-1.7.15/cygwin-1.7.15-1/src/cygwin-1.7.15/winsup/cygwin/crt0.c: > >>No such file or directory. > >> in > >>/home/corinna/src/cygwin/cygwin-1.7.15/cygwin-1.7.15-1/src/cygwin-1.7.15/winsup/cygwin/crt0.c > >> > >>When I try to single step trough the program I get: > >> > >>(gdb) start > >>Temporary breakpoint 1 at 0x401173 > >>Starting program: /home/bernd/Test/a.exe > >>[New Thread 3820.0x8a0] > >>[New Thread 3820.0x41c] > >> > >>Temporary breakpoint 1, 0x00401173 in main () > >>(gdb) next > >>Single stepping until exit from function main, > >>which has no line number information. > >>0x004011c2 in _fu0___ZSt4cout () > >> > >>Does anybody has an idea what is going on? > >Sure looks like your program is not compiled with debugging information, > >i.e., "gcc -g" was not used when compiling and linking the program. > > > >As to who Corrina is, here's a link: > > > >http://www.imdb.com/title/tt0109484/ > > > Thank you. That was embarrassingly the case. > Now to the root of my confusion: Autotools used to generate a > stripped and a debug version. > I could run the debugger: gdb .lib/a.exe and the debug information > were there. > That seems to fail now. > > The generated Makefile has a line that is commented: > #am__append_1 = -Wall -Wextra -ggdb -O0 > am__append_2 = -O2 > > Could that have anything to do with my missing debug information?
Definitely. I suggest reading the `info gcc' pages. They explain all the options, including the -g debugging options. Corinna -- Corinna Vinschen Please, send mails regarding Cygwin to Cygwin Project Co-Leader cygwin AT cygwin DOT com Red Hat -- Problem reports: http://cygwin.com/problems.html FAQ: http://cygwin.com/faq/ Documentation: http://cygwin.com/docs.html Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple
