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
(Why do I want to do this horrible thing? Well, the second is really
the syntax we should be using, but I would like to just undocument the
first version rather than removing it, so as not to break backwards
compatibility with everyone's makefiles.)
Anyhow, if I try this, I get the following error (trimmed slightly for
clarity):
gcc -c [...] ../../svn-source/gcc/genconstants.c
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?
- Brooks
