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Re: Build compiler for maximum debugging (-g -O0)
- From: Brian Dessent <brian at dessent dot net>
- To: Oliver Kellogg <okellogg at users dot sourceforge dot net>
- Cc: gcc-help at gcc dot gnu dot org
- Date: Sat, 15 Dec 2007 15:59:55 -0800
- Subject: Re: Build compiler for maximum debugging (-g -O0)
- References: <200712160155.35503.okellogg@users.sourceforge.net>
- Reply-to: gcc-help at gcc dot gnu dot org
Oliver Kellogg wrote:
> > If you wish to use non-default GCC flags when compiling the stage2 and
> > stage3 compilers, set BOOT_CFLAGS on the command line when doing
> > `make'.
>
> Using bash as my shell, I tried like this:
> $ export BOOT_CFLAGS="-g"
> $ make
That's not what the above is telling you to do. There's a difference
between setting a variable in the environment and overriding it on the
make command line. In particular, settings in the environment do not
override variable assignments in the Makefile (unless you use -e), but
overrides on the make command invocation do.
> What is the correct way to get the installed compiler compiled with -g -O0
> for fullest possible debugging ?
I think you want
make BOOT_CFLAGS="-g"
Brian