[Bug ld/26404] ld: INSERT [AFTER|BEFORE] variant for extension purposes

[nickc at redhat dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=26404

--- Comment #7 from Nick Clifton <nickc at redhat dot com> ---
(In reply to Fangrui Song from comment #6)

> scriptfile defines multiple SECTIONS commands. Each SECTIONS defines exactly
> one output section (for the first implementation we make the scope as narrow
> as possible).
> 
>   SECTIONS {
>     .foo : { KEEP(*(.foo)) }

If there already is a .foo section in the linker script, should any kind of
message be issued ?  I assume not by default, but maybe if the --verbose option
is active then it would be helpful to know that the override has happened. 
Also, if --verbose is used, then presumably the overwritten version is the one
that should be displayed.

> If the main script defines .foo, its .foo is overwritten;
> if the main script does not define .foo, the new .foo is inserted as an
> orphan (the regular orphan placement rule applies).

This might be a problem as section placement is often very important.
We may need to implement your INSERT BEFORE/AFTER idea as well.

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