Re: [PATCH v3] gdb, configure: Add disable-formats option for configure

Guinevere Larsen
2025-04-07T17:49:56Z

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On 4/3/25 2:35 PM, Tom Tromey wrote:
>>>>>> "Guinevere" == Guinevere Larsen<guinevere@redhat.com> writes:
> Guinevere> GDB has support for many binary file formats, some which might be very
> Guinevere> unlikely to be found in some situations (such as the COFF format in
> Guinevere> linux). This commit introduces the option for a user to choose which
> Guinevere> formats GDB will support at build configuration time.
>
> Guinevere> +* Configure changes
> Guinevere> +
> Guinevere> +enable-binary-file-formats=[FORMAT,...]
> Guinevere> +enable-binary-file-formats=all
>
> Add the leading "--" here?
> I didn't look to see what other NEWS entries do.
I double checked the other NEWS entries, and you're right, I should add
"--" to the option.
> Guinevere> +# Object files to be used when building with support for all file formats.
> Guinevere> +all_binary_format_obs="dbxread.o mipsread.o coffread.o coff-pe-read.o xcoffread.o"
>
> I would much rather have this kind of information in the Makefile. I
> know gdb doesn't always do that right now -- but the current way is kind
> of bad IMO.
>
> We can use GNU make features, so it's not hard to transform a list of
> formats like "elf xcoff" into a list of variable references like
> "$(elf_OBJS) $(xcoff_OBJS)"

I'm fine with changing this. I'm only unsure what GNU make feature you
mean. I suppose you mean the makefile should have:

elf_OBJS=elfread.c
xcoff_OBJS=xcoff.c
all_format_OBJS="$(elf_OBJS) $(xcoff_OBJS) ..."

and there is some way to parse --enable-binary-file-formats in the makefile?

>
> Guinevere> diff --git a/gdb/configure.format b/gdb/configure.format
>
> Then we wouldn't need this file, either.
>
> Tom
>

--
Cheers,
Guinevere Larsen
She/Her/Hers

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