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RE: How to create both -option-name-* and -option-name=* options?
- From: "Dave Korn" <dave dot korn at artimi dot com>
- To: "'Brooks Moses'" <brooks dot moses at codesourcery dot com>, <gcc at gcc dot gnu dot org>
- Cc: <fortran at gcc dot gnu dot org>
- Date: Fri, 10 Nov 2006 12:41:33 -0000
- Subject: RE: How to create both -option-name-* and -option-name=* options?
On 10 November 2006 07:34, Brooks Moses wrote:
> The Fortran front end currently has a lang.opt entry of the following form:
>
> ffixed-line-length-
> Fortran RejectNegative Joined UInteger
>
> I would like to add to this the following option which differs in the
> last character, but should be treated identically:
>
> ffixed-line-length=
> Fortran RejectNegative Joined UInteger
> In file included from tm.h:7,
> from ../../svn-source/gcc/genconstants.c:32:
> options.h:659: error: redefinition of `OPT_ffixed_line_length_'
> options.h:657: error: `OPT_ffixed_line_length_' previously defined
> here
>
> This is because both the '=' and the '-' in the option name reduce to a
> '_' in the enumeration name, which of course causes the enumerator to
> get defined twice -- and that's a problem, even though I'm quite happy
> for the options to both be treated identically.
>
> There's not really any good way around this problem, is there?
It may seem a bit radical, but is there any reason not to modify the
option-parsing machinery so that either '-' or '=' are treated interchangeably
for /all/ options with joined arguments? That is, whichever is specified in
the .opt file, the parser accepts either?
cheers,
DaveK
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