[PATCH] PR ld/20283: gold: Add a linker configure option --enable-relro

[H.J. Lu]

On Tue, Jun 21, 2016 at 6:06 PM, Mike Frysinger <vapier@gentoo.org> wrote:
> On 21 Jun 2016 15:11, H.J. Lu wrote:
>> +# Decide if -z relro should be enabled in ELF linker by default.
>> +ac_default_ld_z_relro=unset
>> +# Provide a configure time option to override our default.
>> +AC_ARG_ENABLE(relro,
>> +           AS_HELP_STRING([--enable-relro],
>> +           [enable -z relro in ELF linker by default]),
>> +[case "${enableval}" in
>> +  no)  ac_default_ld_z_relro=0 ;;
>> +esac])dnl
>> +if test ${ac_default_ld_z_relro} = unset; then
>> +  ac_default_ld_z_relro=1
>> +fi
>
> not that it's a new thing, but that expansion should really be quoted.

Changed.

> any reason to not just write it like:
> AC_ARG_ENABLE(relro,
>         AS_HELP_STRING([--enable-relro],
>                 [enable -z relro in ELF linker by default]))
> if test "${enable_relro}" = "yes"; then
>   ac_default_ld_z_relro=1
> else
>   ac_default_ld_z_relro=0
> fi
>
> it's a bit simpler that way.
> -mike

I copied it from ld where ac_default_ld_z_relro is set to 1 unless
--disable-relro is used or not a Linux target. For gold, it becomes
unless --disable-relro is used.  It is easier for me to keep both ld
and gold similar.

-- 
H.J.