Re: Help getting started debugging Emacs on macOS Sierra

[Itai Berli <itai.berli@gmail.com>]

[-- Attachment #1: Type: text/plain, Size: 2287 bytes --]

Eli wrote:

> I suggest to rebuild Emacs without optimizations and with better
debugging info:
>
>  CFLAGS='-O0 -g3' ./configure
> make
> make install

Thank you, Eli. Do I also need to run './autogen.sh' and './autogen.sh git'
again?

On Fri, Aug 11, 2017 at 9:28 AM, Eli Zaretskii <eliz@gnu.org> wrote:

> > From: Itai Berli <itai.berli@gmail.com>
> > Date: Fri, 11 Aug 2017 02:25:17 +0300
> >
> > I'm interesting in exploring the Emacs bidi feature, which is coded in
> the files bidi.c and xdisp.c.
> >
> > To get my feet wet, I'd like to set a breakpoint in the beginning of one
> of the functions in one of these files, I
> > don't care which one, and step through the function in a debugger.
> >
> > Not only am I new to Emacs development, I'm also new to developing C
> programs. Ideally, I'd like to do this in
> > the Eclipse IDE for C/C++ Developers (Oxygen Release 4.7.0). However,
> I'm also willing to try another
> > debugger, such as a command-line one, if it's easier to get started.
> >
> > My operating system is macOS Sierra Version 10.12.6 (the latest
> version). My LLVM version is 8.1.0
> > (clang-802.0.42).
> >
> > I'll appreciate it if someone can walk me through the steps needed to
> get up and running.
>
> I don't use macOS, and so cannot tell you how to use lldb to debug
> Emacs.  Some advice is in etc/DEBUG, but its most useful parts are
> heavily skewed towards GDB.  So if possible, I suggest to install GDB
> for macOS, I'm sure some version of it is available.  That would allow
> more people here to help you with specific commands and features of
> the debugger.  Debugging support in src/.gdbinit is also GDB-specific,
> and I don't know how well does lldb emulate GDB for the commands
> defined on .gdbinit to work in lldb.
>
> > I have downloaded Emacs from git by running
> >
> > > git clone git://git.savannah.gnu.org/emacs.git
> >
> > I then compiled and installed it by running the following sequence of
> scripts.
> >
> > > ./autogen.sh
> > > ./autogen.sh git
> > > ./configure
> > > make
> > > make install
>
> The default build uses optimization switches, which make debugging
> harder.  So I suggest to rebuild Emacs without optimizations and with
> better debugging info:
>
>   CFLAGS='-O0 -g3' ./configure
>   make
>   make install
>

[-- Attachment #2: Type: text/html, Size: 3432 bytes --]