How to compile gcc with no optimization and "-gdwarf-2 -g3"

[Rupert Wood]

Timothy wrote:

> And I tried
> 
> # ./configure --with-dwarf2
> # make CFLAGS='-gdwarf-2 -g3' LIBCFLAGS='-gdwarf-2 -g3'
> BOOT_CFLAGS='-gdwarf-2 -g3'

I haven't done this for a while but I used to pass all the flags to
configure too, i.e.

    # CFLAGS='-gdwarf-2 -g3' LIBCFLAGS='-gdwarf-2 -g3'
      BOOT_CFLAGS='-gdwarf-2 -g3' ./configure --with-dwarf2
    # make CFLAGS='-gdwarf-2 -g3' LIBCFLAGS='-gdwarf-2 -g3'
      BOOT_CFLAGS='-gdwarf-2 -g3'

or just export them in advance (shell-specific)

    export CFLAGS='-gdwarf-2 -g3'
    export LIBCFLAGS='-gdwarf-2 -g3'
    export BOOT_CFLAGS='-gdwarf-2 -g3'
    ./configure --with-dwarf2
    make

Note that BOOT_CFLAGS probably won't make any difference since you're not
using "make bootstrap". If you're not building with a similar version of GCC
then you might want to bootstrap the compiler instead, but it sounds like
you know what you're doing!

Rup.