Re: [PATCH v2 0/7] configure: Improve PIE and other linkage

[Richard Henderson]

On 12/19/19 8:34 AM, Richard Henderson wrote:
> This begins by dropping the -Ttext-segment stuff, which Fangrui Song
> correctly points out does not work with lld.  But it's also obsolete,
> so instead of adding support for lld's --image-base, remove it all.
> 
> Then, remove some other legacy random addresses that were supposed
> to apply to softmmu, but didn't really make any sense, and aren't
> used anyway when PIE is used, which is the default with a modern
> linux distribution.
> 
> Then, clean up some of the configure logic surrounding PIE, and its
> current non-application to non-x86.
> 
> Finally, add support for static-pie linking.
> 
> Changes in v2:
>  - Remove mention of config-host.ld from make distclean
>  - Do not split -z,rodata/-z,now into two tests
>  - Fix --disable-pie --static
> 
> Tested in conjunction with AJB's 
>   configure: allow disable of cross compilation container
>   https://lists.gnu.org/archive/html/qemu-devel/2019-12/msg02943.html
> 
> as otherwise check-tcg simply doesn't work on aarch64 if you happen
> to have docker installed.

Ping.  Patches 3 and 7 still unreviewed.


r~