[PATCH] gdb, configure: Add disable-formats option for configure

[Tom Tromey]

>>>>> Guinevere Larsen <guinevere@redhat.com> writes:

> Ideally we'd like to be able to disable even those formats, in case a
> user wants to build GDB only to examine remote files for example, but
> the current infrastructure for the file format readers doesn't allow
> us to do it.

The goal seems totally fine to me.

> +enable-formats=[FORMAT,]...

I think this option name is too generic.

> +# If all targets were requested, this is all formats that should accompany
> +# them.
> +all_target_formats="elf xcoff mips coff"

I think it would be nicer if the full list only had to be written in one
spot.  Right now it seems like it's both here and in the makefile?  viz:

    +# All files that relate to GDB's ability to read debug information.
    +# Used with --enable-formats=all.
    +ALL_FORMAT_OBS = \


I'd written some more stuff here about maybe just following BFD's lead.
But looking at my "minimal" build tree, I see a native Linux gdb seems
to have COFF and other junk in BFD, so following BFD doesn't seem really
possible.

Tom