--gc-sections and -r

[Tristan Gingold]

Alan,

on Thursday, 28 October 2010 you committed this patch:

v850-elf fails "--gc-sections -r without -e" because the v850 linker
script contains EXTERN().  We don't distinguish these from symbols
given with -u on the command line, but the intention was to require a
command line -u or -e with --gc-sections -r.  Like so.

However, the doc still contains:

This option can be set when doing a partial link (enabled with option
@samp{-r}).  In this case the root of symbols kept must be explicitly
specified either by an @samp{--entry} or @samp{--undefined} option or by
a @code{ENTRY} command in the linker script.

So there is a mismatch.
Is there any reason not to accept anymore ENTRY from linker script ?
(in particular from an explicit linker script).

Tristan.