[libstdc++] Add --disable-hosted-libstdcxx, clean up conditionals

[Gabriel Dos Reis]

Phil Edwards <phil@jaj.com> writes:

| On Thu, Aug 28, 2003 at 09:17:27PM +0200, Gabriel Dos Reis wrote:
| > 
| > That part changes nothing to my question.  And I'm asking it again.
| 
| *blink*
| 
| If you mean
| 
|     Do you think my request is based on non-valid reasons?

I meant it, and I wrote it.

| then, not to be offensive or anything, but yes,

saying so in your reply would have saved us fruitless mail exchange.

| I consider the request
| 
|     This flag should read --disable-hosted-libstdc++ for clearity,
|     consistency.  The hosted library is not named libstdcxx, but libstdc++.
| 
| for "clarity and consistency" to be an invalid reason.  Or rather,
| a good valid reason in itself,

Oh.  It is invalid but it is valid.  I see.

| but not good enough in this situation.  Because this scheme /breaks/.

I noted you said some things break.  But, it is not clear that the
cure ought to be that way.  From your earlier message, you said

  (IIRC, there are shells which have problems expanding and parsing things
  like "${enable_hosted_libstdc+++set}", which is what the corresponding
  ++-style variable would be called.)

"-" is translated to "_".  "+" could just be translated to  "x".  And
we would get a valid shell variable name.

-- Gaby